Remove train station.

.github/workflows/build-helloworld-vita.yml

@@ -0,0 +1,56 @@
+name: build-helloworld-vita
+on:
+  push:
+    branches: [ master ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    env:
+      VITASDK: /usr/local/vitasdk
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Cache VITASDK
+        id: cache-vitasdk-restore
+        uses: actions/cache/restore@v3
+        with:
+          path: /usr/local/vitasdk
+          key: ${{ runner.os }}-vitasdk
+
+      - name: Install Vita Toolchain
+        if: steps.cache-vitasdk.outputs.cache-hit != 'true'
+        run: ./ci/install-vita-toolchain.sh
+
+      - name: Save VITASDK
+        id: cache-vitasdk-save
+        uses: actions/cache/save@v3
+        with:
+          path: /usr/local/vitasdk
+          key: ${{ steps.cache-vitasdk-restore.outputs.cache-primary-key }}
+
+      - name: Install Libraries
+        run: ./ci/install-libraries.sh
+
+      - name: Build Tools
+        run: ./ci/build-tools.sh
+
+      - name: Build Game
+        run: |
+          export PATH=$VITASDK/bin:$PATH
+          mkdir build
+          cd build
+          cmake .. -DDAWN_BUILD_TARGET=target-helloworld-vita -DCMAKE_BUILD_TYPE=Debug
+          make
+
+      - name: Deploying
+        env:
+          DAWN_SSH_KEY: ${{ secrets.DAWN_SSH_KEY }}
+        run: |
+          mkdir -p ~/.ssh
+          echo -e "${DAWN_SSH_KEY}" > ~/.ssh/id_rsa
+          chmod og-rwx ~/.ssh/id_rsa
+          ssh-keyscan -H wish.moe >> ~/.ssh/known_hosts
+          ssh -t yourwishes@wish.moe "mkdir -p /home/yourwishes/Dawn/vita/debug"
+          scp ./build/src/dawnvita/HelloWorld.vpk yourwishes@wish.moe:/home/yourwishes/Dawn/vita/debug/

.github/workflows/build-liminal-glfw-linux64.yml

@@ -0,0 +1,26 @@
+name: build-liminal-glfw-linux64
+on:
+  push:
+    branches: [ master ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install Toolchain
+        run: ./ci/install-linux-toolchain.sh
+
+      - name: Install Libraries
+        run: ./ci/install-libraries.sh
+
+      - name: Build Tools
+        run: ./ci/build-tools.sh
+
+      - name: Build Game
+        run: |
+          mkdir build
+          cd build
+          cmake .. -DDAWN_BUILD_TARGET=target-liminial-linux64-glfw
+          make

.gitignore

@@ -65,7 +65,7 @@ CTestTestfile.cmake
 _deps
 
 # Custom
-build
+/build/*
 .vscode
 
 assets/testworld/tileset.png

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "lib/font8x8"]
+	path = lib/font8x8
+	url = https://github.com/dhepper/font8x8

CMakeLists.txt

@@ -1,4 +1,4 @@
-# Copyright (c) 2022 Dominic Masters
+# Copyright (c) 2024 Dominic Masters
 # 
 # This software is released under the MIT License.
 # https://opensource.org/licenses/MIT
@@ -6,11 +6,37 @@
 cmake_minimum_required(VERSION 3.13)
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_STANDARD_REQUIRED ON)
-set(CMAKE_CXX_STANDARD 20)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-add_library(dawn STATIC
-  src/funcs.c
+# Variable Caches
+set(DAWN_CACHE_TARGET "dawn-target")
+set(DAWN_TARGET_NAME "Dawn")
+
+if(NOT DEFINED DAWN_TARGET)
+  set(DAWN_TARGET linux-x64-glfw CACHE INTERNAL ${DAWN_CACHE_TARGET})
+  # set(DAWN_TARGET linux-x64-terminal CACHE INTERNAL ${DAWN_CACHE_TARGET})
+endif()
+
+# Set Common Build Variables
+set(DAWN_ROOT_DIR "${CMAKE_SOURCE_DIR}")
+set(DAWN_BUILD_DIR "${CMAKE_BINARY_DIR}")
+set(DAWN_SOURCES_DIR "${DAWN_ROOT_DIR}/src")
+set(DAWN_TOOLS_DIR "${DAWN_ROOT_DIR}/tools")
+set(DAWN_ASSETS_SOURCE_DIR "${DAWN_ROOT_DIR}/assets")
+set(DAWN_ASSETS_BUILD_DIR "${DAWN_BUILD_DIR}/assets")
+set(DAWN_GENERATED_DIR "${DAWN_BUILD_DIR}/generated")
+set(DAWN_TEMP_DIR "${DAWN_BUILD_DIR}/temp")
+
+# Initialize Project.
+project(Dawn
+  VERSION 1.0.0
+  LANGUAGES C
 )
 
-target_include_directories(dawn PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src)
+# Add tools
+add_subdirectory(tools)
+
+# Add Libraries
+add_subdirectory(lib)
+
+# Add Project Files
+add_subdirectory(src)

README.md

@@ -1,3 +0,0 @@
-# Dawn Project
-Simple in code, complex in structure game engine for creating small, fast and
-reusable games.

assets/en.json

@@ -0,0 +1,42 @@
+{
+  "main_menu": {
+    "new_game": "New Game",
+    "load_game": "Load Game",
+    "options": "Options",
+    "exit": "Exit"
+  },
+  "tiles": {
+    "water": {
+      "interact": "A refreshing body of water."
+    },
+    "lamp": {
+      "interact": "An electric lamp.\nA real lightbulb idea."
+    },
+    "rail": {
+      "interact": "Train tracks.\n...Better not cross them."
+    }
+  },
+  "entities": {
+    "sign": {
+      "name": "Sign"
+    }
+  },
+  "maps": {
+    "testmap": {
+      "bob": "Hello, I am Bob.",
+      "sign": "This is a sign.",
+      "sign2": {
+        "1": "This is another sign.",
+        "2": "It has two lines."
+      }
+    },
+    "train_station": {
+      "stair_sign": {
+        "0": "Stairs slippery when wet.\n\n<- West to Town.\n-> East to lakefront."
+      }
+    }
+  },
+  "battle": {
+    "start": "Battle Start!"
+  }
+}

assets/maps/testmap.tmx

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<map version="1.10" tiledversion="1.11.0" orientation="orthogonal" renderorder="right-down" width="30" height="20" tilewidth="8" tileheight="8" infinite="0" nextlayerid="3" nextobjectid="7">
+ <tileset firstgid="1" source="../tilemaps/tilemap.tsx"/>
+ <tileset firstgid="65" source="../tilemaps/entities.tsx"/>
+ <layer id="1" name="Map" width="30" height="20" locked="1">
+  <data encoding="csv">
+1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,
+1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,
+1,1,1,1,1,1,2,2,2,2,2,2,6,6,6,6,6,2,2,2,2,2,2,3,3,3,2,2,2,2,
+1,1,1,1,1,1,2,2,2,2,2,2,6,6,6,6,6,2,2,2,2,2,3,3,3,3,2,2,2,2,
+1,1,1,1,1,2,2,2,2,2,2,2,5,5,5,5,5,2,2,2,2,2,3,3,3,2,2,2,2,2,
+1,1,1,1,1,2,2,2,2,2,2,2,5,5,5,5,5,2,2,2,2,2,3,3,3,2,2,2,2,2,
+1,1,1,1,1,1,2,2,2,2,2,2,5,5,1,5,5,2,2,2,2,3,3,3,3,2,2,2,2,2,
+1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,2,2,2,2,2,
+1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,2,2,
+1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,2,2,
+1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,2,2,2,
+1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,2,2,2,
+1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,2,2,2,2,2,2,2,2,
+1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,2,2,2,2,
+1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,2,2,2,2,2,
+1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,3,3,3,3,2,2,2,2,2,2,2,2,2,
+1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,2,2,2,2,2,2,
+1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,2,2,2,2,2,2,2,2,2,2,2,
+1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,3,3,3,3,2,2,2,2,2,2,2,2,2,2,2,
+1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,3,3,3,2,2,2,2,2,2,2,2,2,2,2,2
+</data>
+ </layer>
+ <objectgroup id="2" name="Entities">
+  <object id="4" name="Player" type="player" gid="66" x="87.7275" y="119.497" width="8" height="8"/>
+  <object id="5" name="Sign" type="sign" gid="68" x="86.8498" y="55.0415" width="8" height="8">
+   <properties>
+    <property name="texts_0" value="maps.testmap.sign2.1"/>
+    <property name="texts_1" value="maps.testmap.sign2.2"/>
+   </properties>
+  </object>
+  <object id="6" name="Door" type="door" gid="69" x="111.791" y="55.7608" width="8" height="8">
+   <properties>
+    <property name="direction" type="int" value="2"/>
+    <property name="map" value="testmap2.map"/>
+    <property name="x" type="int" value="11"/>
+    <property name="y" type="int" value="2"/>
+   </properties>
+  </object>
+ </objectgroup>
+</map>

assets/maps/testmap2.tmx

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<map version="1.10" tiledversion="1.11.0" orientation="orthogonal" renderorder="right-down" width="5" height="5" tilewidth="8" tileheight="8" infinite="0" nextlayerid="2" nextobjectid="1">
+ <tileset firstgid="1" source="../tilemaps/tilemap.tsx"/>
+ <tileset firstgid="67" source="../tilemaps/entities.tsx"/>
+ <layer id="1" name="Tile Layer 1" width="5" height="5">
+  <data encoding="csv">
+2,2,2,2,2,
+2,2,2,3,2,
+2,2,3,3,2,
+2,2,3,2,2,
+2,3,3,2,2
+</data>
+ </layer>
+ <objectgroup id="2" name="Entities">
+  <object id="4" name="Player" type="player" gid="68" x="6.54983" y="15.3437" width="8" height="8"/>
+ </objectgroup>
+</map>

assets/tiled_project.tiled-project

@@ -0,0 +1,14 @@
+{
+    "automappingRulesFile": "",
+    "commands": [
+    ],
+    "compatibilityVersion": 1100,
+    "extensionsPath": "extensions",
+    "folders": [
+        "."
+    ],
+    "properties": [
+    ],
+    "propertyTypes": [
+    ]
+}

assets/tiled_project.tiled-session

@@ -0,0 +1,114 @@
+{
+    "Map/SizeTest": {
+        "height": 4300,
+        "width": 2
+    },
+    "activeFile": "maps/testmap.tmx",
+    "expandedProjectPaths": [
+        ".",
+        "maps"
+    ],
+    "file.lastUsedOpenFilter": "All Files (*)",
+    "fileStates": {
+        "": {
+            "scaleInDock": 1
+        },
+        "entities.tsx": {
+            "scaleInDock": 1,
+            "scaleInEditor": 1
+        },
+        "maps/downtown.tmx": {
+            "scale": 4.9072,
+            "selectedLayer": 0,
+            "viewCenter": {
+                "x": 39.94131072709489,
+                "y": 40.0432018258885
+            }
+        },
+        "maps/testmap.tmx": {
+            "expandedObjectLayers": [
+                2
+            ],
+            "scale": 3.404166666666667,
+            "selectedLayer": 1,
+            "viewCenter": {
+                "x": 95.17747858017135,
+                "y": 86.80538555691552
+            }
+        },
+        "maps/testmap2.tmx": {
+            "expandedObjectLayers": [
+                2
+            ],
+            "scale": 5.0383,
+            "selectedLayer": 1,
+            "viewCenter": {
+                "x": 19.84796459123116,
+                "y": 19.947204414187325
+            }
+        },
+        "maps/train_station.tmx": {
+            "expandedObjectLayers": [
+                2
+            ],
+            "scale": 2.7603,
+            "selectedLayer": 1,
+            "viewCenter": {
+                "x": 160.48980183313407,
+                "y": 120.4579212404449
+            }
+        },
+        "testmap.tmx": {
+            "scale": 3.23,
+            "selectedLayer": 1,
+            "viewCenter": {
+                "x": 122.60061919504646,
+                "y": 56.965944272445824
+            }
+        },
+        "testmap2.tmx": {
+            "scale": 3.281458333333333,
+            "selectedLayer": 0,
+            "viewCenter": {
+                "x": 119.91619579709226,
+                "y": 80.14729223541363
+            }
+        },
+        "tilemap.tsx": {
+            "scaleInDock": 1,
+            "scaleInEditor": 4
+        },
+        "tilemaps/entities.tsx": {
+            "scaleInDock": 2,
+            "scaleInEditor": 9.7785
+        },
+        "tilemaps/tilemap.tsx": {
+            "scaleInDock": 2
+        }
+    },
+    "last.externalTilesetPath": "/home/yourwishes/htdocs/Dawn/assets",
+    "last.imagePath": "/home/yourwishes/htdocs/Dawn/assets",
+    "map.height": 10,
+    "map.lastUsedFormat": "tmx",
+    "map.tileHeight": 8,
+    "map.tileWidth": 8,
+    "map.width": 10,
+    "openFiles": [
+        "maps/testmap.tmx"
+    ],
+    "project": "tiled_project.tiled-project",
+    "property.type": "string",
+    "recentFiles": [
+        "maps/testmap.tmx",
+        "maps/downtown.tmx",
+        "maps/testmap2.tmx",
+        "maps/train_station.tmx",
+        "tilemaps/entities.tsx"
+    ],
+    "tileset.lastUsedFilter": "All Files (*)",
+    "tileset.lastUsedFormat": "tsx",
+    "tileset.tileSize": {
+        "height": 8,
+        "width": 8
+    }
+}

assets/tilemaps/entities.tsx

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<tileset version="1.10" tiledversion="1.11.0" name="entities" tilewidth="8" tileheight="8" tilecount="64" columns="8">
+ <image source="entities.png" width="64" height="64"/>
+ <tile id="1" type="player"/>
+ <tile id="2" type="npc"/>
+ <tile id="3" type="sign"/>
+ <tile id="4" type="door"/>
+</tileset>

assets/tilemaps/tilemap.tsx

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<tileset version="1.10" tiledversion="1.11.0" name="tilemap" tilewidth="8" tileheight="8" tilecount="64" columns="8">
+ <image source="tilemap.png" width="64" height="64"/>
+</tileset>

gentileset.py

@@ -0,0 +1,234 @@
+# font is a 2D array of 8x8 pixel characters where each bit is a pixel on the
+# row.
+font8x8_basic = [
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0000 (nul)
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0001
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0002
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0003
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0004
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0005
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0006
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0007
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0008
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0009
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+000A
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+000B
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+000C
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+000D
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+000E
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+000F
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0010
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0011
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0012
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0013
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0014
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0015
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0016
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0017
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0018
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0019
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+001A
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+001B
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+001C
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+001D
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+001E
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+001F
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0020 (space)
+    [0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00],  # U+0021 (!)
+    [0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0022 (")
+    [0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00],  # U+0023 (#)
+    [0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00],  # U+0024 ($)
+    [0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00],  # U+0025 (%)
+    [0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00],  # U+0026 (&)
+    [0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0027 (')
+    [0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00],  # U+0028 (()
+    [0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00],  # U+0029 ())
+    [0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00],  # U+002A (*)
+    [0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00],  # U+002B (+)
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06],  # U+002C (,)
+    [0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00],  # U+002D (-)
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00],  # U+002E (.)
+    [0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00],  # U+002F (/)
+    [0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00],  # U+0030 (0)
+    [0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00],  # U+0031 (1)
+    [0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00],  # U+0032 (2)
+    [0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00],  # U+0033 (3)
+    [0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00],  # U+0034 (4)
+    [0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00],  # U+0035 (5)
+    [0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00],  # U+0036 (6)
+    [0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00],  # U+0037 (7)
+    [0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00],  # U+0038 (8)
+    [0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00],  # U+0039 (9)
+    [0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00],  # U+003A (:)
+    [0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06],  # U+003B (;)
+    [0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00],  # U+003C (<)
+    [0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00],  # U+003D (=)
+    [0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00],  # U+003E (>)
+    [0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00],  # U+003F (?)
+    [0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00],  # U+0040 (@)
+    [0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00],  # U+0041 (A)
+    [0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00],  # U+0042 (B)
+    [0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00],  # U+0043 (C)
+    [0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00],  # U+0044 (D)
+    [0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00],  # U+0045 (E)
+    [0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00],  # U+0046 (F)
+    [0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00],  # U+0047 (G)
+    [0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00],  # U+0048 (H)
+    [0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00],  # U+0049 (I)
+    [0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00],  # U+004A (J)
+    [0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00],  # U+004B (K)
+    [0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00],  # U+004C (L)
+    [0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00],  # U+004D (M)
+    [0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00],  # U+004E (N)
+    [0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00],  # U+004F (O)
+    [0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00],  # U+0050 (P)
+    [0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00],  # U+0051 (Q)
+    [0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00],  # U+0052 (R)
+    [0x1E, 0x33, 0x07, 0x1E, 0x38, 0x33, 0x1E, 0x00],  # U+0053 (S)
+    [0x3F, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x00],  # U+0054 (T)
+    [0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00],  # U+0055 (U)
+    [0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00],  # U+0056 (V)
+    [0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00],  # U+0057 (W)
+    [0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00],  # U+0058 (X)
+    [0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x0C, 0x00],  # U+0059 (Y)
+    [0x3F, 0x33, 0x19, 0x0C, 0x26, 0x33, 0x3F, 0x00],  # U+005A (Z)
+    [0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00],  # U+005B ([)
+    [0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0x00],  # U+005C (\)
+    [0x1E, 0x30, 0x30, 0x30, 0x30, 0x30, 0x1E, 0x00],  # U+005D (])
+    [0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00],  # U+005E (^)
+    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF],  # U+005F (_)
+    [0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+0060 (`)
+    [0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00],  # U+0061 (a)
+    [0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00],  # U+0062 (b)
+    [0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00],  # U+0063 (c)
+    [0x38, 0x30, 0x30, 0x3E, 0x33, 0x33, 0x6E, 0x00],  # U+0064 (d)
+    [0x00, 0x00, 0x1E, 0x33, 0x3F, 0x03, 0x1E, 0x00],  # U+0065 (e)
+    [0x1C, 0x36, 0x06, 0x0F, 0x06, 0x06, 0x0F, 0x00],  # U+0066 (f)
+    [0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1E],  # U+0067 (g)
+    [0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00],  # U+0068 (h)
+    [0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00],  # U+0069 (i)
+    [0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E],  # U+006A (j)
+    [0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00],  # U+006B (k)
+    [0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00],  # U+006C (l)
+    [0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00],  # U+006D (m)
+    [0x00, 0x00, 0x1B, 0x37, 0x33, 0x33, 0x33, 0x00],  # U+006E (n)
+    [0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00],  # U+006F (o)
+    [0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F],  # U+0070 (p)
+    [0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78],  # U+0071 (q)
+    [0x00, 0x00, 0x1B, 0x36, 0x36, 0x06, 0x0F, 0x00],  # U+0072 (r)
+    [0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00],  # U+0073 (s)
+    [0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00],  # U+0074 (t)
+    [0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00],  # U+0075 (u)
+    [0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00],  # U+0076 (v)
+    [0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00],  # U+0077 (w)
+    [0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00],  # U+0078 (x)
+    [0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1E],  # U+0079 (y)
+    [0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00],  # U+007A (z)
+    [0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00],  # U+007B ({)
+    [0x0C, 0x0C, 0x0C, 0x00, 0x0C, 0x0C, 0x0C, 0x00],  # U+007C (|)
+    [0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00],  # U+007D (})
+    [0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # U+007E (~)
+]
+
+
+# COLOR4F(0.0f, 0.0f, 0.0f, 1.0f), # Black
+# COLOR4F(1.0f, 1.0f, 1.0f, 1.0f), # White
+# COLOR4F(0.8f, 0.0f, 0.0f, 1.0f), # Red
+# COLOR4F(0.0f, 0.5f, 0.0f, 1.0f), # Green
+# COLOR4F(0.0f, 0.0f, 0.8f, 1.0f), # Blue
+# COLOR4F(0.8f, 0.8f, 0.0f, 1.0f), # Yellow
+# COLOR4F(0.8f, 0.0f, 0.8f, 1.0f), # Magenta
+# COLOR4F(0.0f, 0.8f, 0.8f, 1.0f), # Cyan
+# COLOR4F(0.5f, 0.5f, 0.5f, 1.0f), # Gray
+# COLOR4F(0.5f, 0.25f, 0.0f, 1.0f) # Brown
+
+# Tilemap
+COLORS = {
+  "BLACK": [ 0, 0, 0 ],
+  "WHITE": [ 255, 255, 255 ],
+  "RED": [ 204, 0, 0 ],
+  "GREEN": [ 0, 128, 0 ],
+  "BLUE": [ 0, 0, 204 ],
+  "YELLOW": [ 204, 204, 0 ],
+  "MAGENTA": [ 204, 0, 204 ],
+  "CYAN": [ 0, 204, 204 ],
+  "GRAY": [ 128, 128, 128 ],
+  "BROWN": [ 128, 64, 0 ]
+}
+
+TILES = {
+  # NAME: [ id, symbol, color ]
+  "NULL": [ 0, 'N', COLORS["RED"] ],
+  "GRASS": [ 1, '#', COLORS["GREEN"] ],
+  "WATER": [ 2, '\\', COLORS["BLUE"] ],
+  # "DOOR": [ 3, 'D', COLORS["BROWN"] ],
+  "BUILDING_WALL": [ 4, '-', COLORS["GRAY"] ],
+  "ROOF": [ 5, '/', COLORS["BROWN"] ],
+  "WALKABLE_NULL": [ 6, ' ', COLORS["BLACK"] ],
+  "COBBLESTONE": [ 7, '#', COLORS["GRAY"] ],
+  "STAIRS": [ 8, '=', COLORS["GRAY"] ],
+  "RAILING": [ 9, 'n', COLORS["BROWN"] ],
+  "COLUMN": [ 10, 'I', COLORS["WHITE"] ],
+  "RAIL_TRACK": [ 11, '|', COLORS["GRAY"] ],
+  "RAIL_SLEEPER": [ 12, '-', COLORS["BROWN"] ],
+  "CARPET": [ 13, '#', COLORS["RED"] ],
+  "LAMP": [ 14, 'i', COLORS["YELLOW"] ],
+}
+
+ENTITIES = {
+  "NULL": [ 0, 'N', COLORS["RED"] ],
+  "PLAYER": [ 1, 'v', COLORS["RED"] ],
+  "NPC": [ 2, 'V', COLORS["RED"] ],
+  "SIGN": [ 3, '+', COLORS["YELLOW"] ],
+  "DOOR": [ 4, 'D', COLORS["BROWN"] ],
+}
+
+# Create 64 x 64 RGB pixel buffer.
+import png
+
+WIDTH = 64
+HEIGHT = 64
+
+def genTileset(filename, tileset, background):
+  # Create 64x64 pixel buffer with black
+  PIXEL_BUFFER = []
+  for y in range(HEIGHT):
+    row = []
+    for x in range(WIDTH):
+      row.append(background)
+    PIXEL_BUFFER.append(row)
+
+  # For each TILES
+  for tile in tileset:
+    # Get the tile data
+    tile_data = tileset[tile]
+    tile_id = tile_data[0]
+    tile_char = tile_data[1]
+    tile_color = tile_data[2]
+    # Get char pixels
+    char_pixels = font8x8_basic[ord(tile_char)]
+    tile_color_rgba = [ tile_color[0], tile_color[1], tile_color[2], 255 ]
+
+    # Write char pixels to output buffer, using tile_id to determine pixels with
+    # each row holding 8 characters of 8 pixels
+    for y in range(8):
+      row = char_pixels[y]
+      for x in range(8):
+        if row & (1 << x):
+          PIXEL_BUFFER[(tile_id // 8) * 8 + y][(tile_id % 8) * 8 + x] = tile_color_rgba
+
+  # Convert from [ [ [ r, g, b ], [ r, g, b] ], [ [ r, g, b ], [ r, g, b ] ] ] to
+  # [ [R, G, B, A, R, G, B, A] ] (Flatten level 2 and add alpha channel)
+  FLATTENED_PIXEL_BUFFER = [ [ 0 for i in range(WIDTH * 4) ] for j in range(HEIGHT) ]
+  for y in range(HEIGHT):
+    for x in range(WIDTH):
+      FLATTENED_PIXEL_BUFFER[y][x * 4 + 0] = PIXEL_BUFFER[y][x][0]
+      FLATTENED_PIXEL_BUFFER[y][x * 4 + 1] = PIXEL_BUFFER[y][x][1]
+      FLATTENED_PIXEL_BUFFER[y][x * 4 + 2] = PIXEL_BUFFER[y][x][2]
+      FLATTENED_PIXEL_BUFFER[y][x * 4 + 3] = PIXEL_BUFFER[y][x][3]
+    
+  # Now write PIXEL_BUFFER to png
+  png.from_array(FLATTENED_PIXEL_BUFFER, 'RGBA').save(filename)
+
+genTileset("./assets/tilemaps/tilemap.png", TILES, [ 0, 0, 0, 255 ])
+genTileset("./assets/tilemaps/entities.png", ENTITIES, [ 0, 0, 0, 100 ])

lib/CMakeLists.txt

@@ -0,0 +1,31 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+include(FetchContent)
+
+add_library(font8x8 INTERFACE)
+target_include_directories(font8x8 INTERFACE font8x8)
+
+add_subdirectory(glad)
+
+# GLFW
+FetchContent_Declare(glfw URL https://github.com/glfw/glfw/releases/download/3.4/glfw-3.4.zip)
+FetchContent_MakeAvailable(glfw)
+
+# GLM
+FetchContent_Declare(
+  cglm
+  GIT_REPOSITORY  https://github.com/recp/cglm
+  GIT_TAG         1796cc5ce298235b615dc7a4750b8c3ba56a05dd
+)
+FetchContent_MakeAvailable(cglm)
+
+#LibArchive
+FetchContent_Declare(
+  libarchive
+  GIT_REPOSITORY https://github.com/libarchive/libarchive
+  GIT_TAG        v3.7.6
+)
+FetchContent_MakeAvailable(libarchive)

lib/glad/CMakeLists.txt

@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 3.11)
+project(glad)
+set(CMAKE_C_STANDARD 99)
+set(CMAKE_C_STANDARD_REQUIRED ON)
+
+add_library(${PROJECT_NAME}
+  src/glad.c
+)
+target_include_directories(${PROJECT_NAME}
+  PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}/include
+)

lib/glad/include/KHR/khrplatform.h

@@ -0,0 +1,290 @@
+#ifndef __khrplatform_h_
+#define __khrplatform_h_
+
+/*
+** Copyright (c) 2008-2018 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+/* Khronos platform-specific types and definitions.
+ *
+ * The master copy of khrplatform.h is maintained in the Khronos EGL
+ * Registry repository at https://github.com/KhronosGroup/EGL-Registry
+ * The last semantic modification to khrplatform.h was at commit ID:
+ *      67a3e0864c2d75ea5287b9f3d2eb74a745936692
+ *
+ * Adopters may modify this file to suit their platform. Adopters are
+ * encouraged to submit platform specific modifications to the Khronos
+ * group so that they can be included in future versions of this file.
+ * Please submit changes by filing pull requests or issues on
+ * the EGL Registry repository linked above.
+ *
+ *
+ * See the Implementer's Guidelines for information about where this file
+ * should be located on your system and for more details of its use:
+ *    http://www.khronos.org/registry/implementers_guide.pdf
+ *
+ * This file should be included as
+ *        #include <KHR/khrplatform.h>
+ * by Khronos client API header files that use its types and defines.
+ *
+ * The types in khrplatform.h should only be used to define API-specific types.
+ *
+ * Types defined in khrplatform.h:
+ *    khronos_int8_t              signed   8  bit
+ *    khronos_uint8_t             unsigned 8  bit
+ *    khronos_int16_t             signed   16 bit
+ *    khronos_uint16_t            unsigned 16 bit
+ *    khronos_int32_t             signed   32 bit
+ *    khronos_uint32_t            unsigned 32 bit
+ *    khronos_int64_t             signed   64 bit
+ *    khronos_uint64_t            unsigned 64 bit
+ *    khronos_intptr_t            signed   same number of bits as a pointer
+ *    khronos_uintptr_t           unsigned same number of bits as a pointer
+ *    khronos_ssize_t             signed   size
+ *    khronos_usize_t             unsigned size
+ *    khronos_float_t             signed   32 bit floating point
+ *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
+ *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
+ *                                         nanoseconds
+ *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
+ *    khronos_boolean_enum_t      enumerated boolean type. This should
+ *      only be used as a base type when a client API's boolean type is
+ *      an enum. Client APIs which use an integer or other type for
+ *      booleans cannot use this as the base type for their boolean.
+ *
+ * Tokens defined in khrplatform.h:
+ *
+ *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
+ *
+ *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
+ *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
+ *
+ * Calling convention macros defined in this file:
+ *    KHRONOS_APICALL
+ *    KHRONOS_APIENTRY
+ *    KHRONOS_APIATTRIBUTES
+ *
+ * These may be used in function prototypes as:
+ *
+ *      KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
+ *                                  int arg1,
+ *                                  int arg2) KHRONOS_APIATTRIBUTES;
+ */
+
+#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
+#   define KHRONOS_STATIC 1
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APICALL
+ *-------------------------------------------------------------------------
+ * This precedes the return type of the function in the function prototype.
+ */
+#if defined(KHRONOS_STATIC)
+    /* If the preprocessor constant KHRONOS_STATIC is defined, make the
+     * header compatible with static linking. */
+#   define KHRONOS_APICALL
+#elif defined(_WIN32)
+#   define KHRONOS_APICALL __declspec(dllimport)
+#elif defined (__SYMBIAN32__)
+#   define KHRONOS_APICALL IMPORT_C
+#elif defined(__ANDROID__)
+#   define KHRONOS_APICALL __attribute__((visibility("default")))
+#else
+#   define KHRONOS_APICALL
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIENTRY
+ *-------------------------------------------------------------------------
+ * This follows the return type of the function  and precedes the function
+ * name in the function prototype.
+ */
+#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
+    /* Win32 but not WinCE */
+#   define KHRONOS_APIENTRY __stdcall
+#else
+#   define KHRONOS_APIENTRY
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIATTRIBUTES
+ *-------------------------------------------------------------------------
+ * This follows the closing parenthesis of the function prototype arguments.
+ */
+#if defined (__ARMCC_2__)
+#define KHRONOS_APIATTRIBUTES __softfp
+#else
+#define KHRONOS_APIATTRIBUTES
+#endif
+
+/*-------------------------------------------------------------------------
+ * basic type definitions
+ *-----------------------------------------------------------------------*/
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
+
+
+/*
+ * Using <stdint.h>
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(__VMS ) || defined(__sgi)
+
+/*
+ * Using <inttypes.h>
+ */
+#include <inttypes.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
+
+/*
+ * Win32
+ */
+typedef __int32                 khronos_int32_t;
+typedef unsigned __int32        khronos_uint32_t;
+typedef __int64                 khronos_int64_t;
+typedef unsigned __int64        khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(__sun__) || defined(__digital__)
+
+/*
+ * Sun or Digital
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#if defined(__arch64__) || defined(_LP64)
+typedef long int                khronos_int64_t;
+typedef unsigned long int       khronos_uint64_t;
+#else
+typedef long long int           khronos_int64_t;
+typedef unsigned long long int  khronos_uint64_t;
+#endif /* __arch64__ */
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif 0
+
+/*
+ * Hypothetical platform with no float or int64 support
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#define KHRONOS_SUPPORT_INT64   0
+#define KHRONOS_SUPPORT_FLOAT   0
+
+#else
+
+/*
+ * Generic fallback
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#endif
+
+
+/*
+ * Types that are (so far) the same on all platforms
+ */
+typedef signed   char          khronos_int8_t;
+typedef unsigned char          khronos_uint8_t;
+typedef signed   short int     khronos_int16_t;
+typedef unsigned short int     khronos_uint16_t;
+
+/*
+ * Types that differ between LLP64 and LP64 architectures - in LLP64,
+ * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
+ * to be the only LLP64 architecture in current use.
+ */
+#ifdef _WIN64
+typedef signed   long long int khronos_intptr_t;
+typedef unsigned long long int khronos_uintptr_t;
+typedef signed   long long int khronos_ssize_t;
+typedef unsigned long long int khronos_usize_t;
+#else
+typedef signed   long  int     khronos_intptr_t;
+typedef unsigned long  int     khronos_uintptr_t;
+typedef signed   long  int     khronos_ssize_t;
+typedef unsigned long  int     khronos_usize_t;
+#endif
+
+#if KHRONOS_SUPPORT_FLOAT
+/*
+ * Float type
+ */
+typedef          float         khronos_float_t;
+#endif
+
+#if KHRONOS_SUPPORT_INT64
+/* Time types
+ *
+ * These types can be used to represent a time interval in nanoseconds or
+ * an absolute Unadjusted System Time.  Unadjusted System Time is the number
+ * of nanoseconds since some arbitrary system event (e.g. since the last
+ * time the system booted).  The Unadjusted System Time is an unsigned
+ * 64 bit value that wraps back to 0 every 584 years.  Time intervals
+ * may be either signed or unsigned.
+ */
+typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
+typedef khronos_int64_t        khronos_stime_nanoseconds_t;
+#endif
+
+/*
+ * Dummy value used to pad enum types to 32 bits.
+ */
+#ifndef KHRONOS_MAX_ENUM
+#define KHRONOS_MAX_ENUM 0x7FFFFFFF
+#endif
+
+/*
+ * Enumerated boolean type
+ *
+ * Values other than zero should be considered to be true.  Therefore
+ * comparisons should not be made against KHRONOS_TRUE.
+ */
+typedef enum {
+    KHRONOS_FALSE = 0,
+    KHRONOS_TRUE  = 1,
+    KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
+} khronos_boolean_enum_t;
+
+#endif /* __khrplatform_h_ */

src/CMakeLists.txt

@@ -0,0 +1,22 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Build Project
+add_executable(${DAWN_TARGET_NAME})
+
+# Add base
+add_subdirectory(dawn)
+
+# Compile entries
+if(DAWN_TARGET STREQUAL "linux-x64-terminal")
+  add_subdirectory(dawnlinux)
+  add_subdirectory(dawntermlinux)
+elseif(DAWN_TARGET STREQUAL "linux-x64-glfw")
+  add_subdirectory(dawnlinux)
+  add_subdirectory(dawnglfw)
+  add_subdirectory(dawnopengl)
+else()
+  message(FATAL_ERROR "Unknown target: ${DAWN_TARGET}")
+endif()

src/dawn/CMakeLists.txt

@@ -0,0 +1,39 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Libraries
+target_link_libraries(${DAWN_TARGET_NAME}
+  PUBLIC
+    archive_static
+)
+
+# Includes
+target_include_directories(${DAWN_TARGET_NAME}
+  PUBLIC
+    ${CMAKE_CURRENT_LIST_DIR}
+)
+
+# Subdirs
+add_subdirectory(assert)
+add_subdirectory(asset)
+add_subdirectory(display)
+add_subdirectory(game)
+add_subdirectory(rpg)
+add_subdirectory(ui)
+add_subdirectory(locale)
+add_subdirectory(util)
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    input.c
+)
+
+# Assets
+tool_map(testmap maps/testmap.tmx)
+tool_map(testmap2 maps/testmap2.tmx)
+tool_copy(en en.json)
+
+add_dependencies(${DAWN_TARGET_NAME} dawnassets)

src/dawn/assert/CMakeLists.txt

@@ -0,0 +1,12 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    assert.c
+)

src/dawn/assert/assert.c

@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2022 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "assert.h"
+#include <stdarg.h>
+
+void assertTrueImplement(
+  const char *file,
+  const int32_t line,
+  const char *func,
+  const bool_t result,
+  const char *message,
+  ...
+) {
+  if(result) return;
+
+  // Print file info.
+  fprintf(
+    stderr,
+    "Assert failed in %s:%i :: %s\n",
+    file,
+    line,
+    func
+  );
+
+  // Print message.
+  va_list args;
+  va_start(args, message);
+  vfprintf(stderr, message, args);
+  va_end(args);
+  fprintf(stderr, "\n");
+  abort();
+}

src/dawn/assert/assert.h

@@ -0,0 +1,117 @@
+/**
+ * Copyright (c) 2022 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+/**
+ * Asserts that a given statement must evaluate to true or the assertion fails
+ * and the game will close semi-gracefully.
+ * 
+ * @param file String filename of the file that has the assertion.
+ * @param line Integer line number within the file that the assertion is on.
+ * @param func Called function that has the assertion.
+ * @param result The statement that must equate to true.
+ * @param message Message (sprintf format) to send to the stdout.
+ * @param ... Varargs of the sprintf arguments.
+ */
+void assertTrueImplement(
+  const char *file,
+  const int32_t line,
+  const char *func,
+  const bool_t result,
+  const char *message,
+  ...
+);
+
+/**
+ * Asserts that a statement must be true in order for the assertion to not cause
+ * an error. Basically this is a throw statement in disguise.
+ * 
+ * @param statement Statement of the assertion.
+ * @param message Message (sprintf format) to send to the logger.
+ * @param args Optional TParam args for the sprintf message to accept.
+ */
+#define assertTrue(...) assertTrueImplement( \
+  __FILE__, __LINE__, __func__, __VA_ARGS__  \
+)
+
+/**
+ * Asserts that a statement must be false in order for the assertion to not
+ * cause an error.
+ * 
+ * @param statement Statement of the assertion.
+ * @param message Message (sprintf format) to send to the logger.
+ * @param args Optional TParam args for the sprintf message to accept.
+ */
+#define assertFalse(x, ...) assertTrue(!(x), __VA_ARGS__)
+
+/**
+ * Asserts that a specified piece of code should be entirely unreachable.
+ * @param message Message (sprintf format) to send to the logger.
+ * @param args Optional TParam args for the sprintf message to accept.
+ */
+#define assertUnreachable(...) assertTrue(false, __VA_ARGS__)
+
+/**
+ * Asserts that a given pointer is not null.
+ * @param x Pointer to check.
+ * @param message Message (sprintf format) to send to the logger.
+ * @param args Optional TParam args for the sprintf message to accept.
+ */
+#define assertNotNull(x, ...) assertTrue(x != NULL, __VA_ARGS__)
+
+/**
+ * Asserts that a given pointer is null.
+ * @param x Pointer to check.
+ * @param message Message (sprintf format) to send to the logger.
+ * @param args Optional TParam args for the sprintf message to accept.
+ */
+#define assertNull(x, ...) assertTrue(x == NULL, __VA_ARGS__)
+
+/**
+ * Asserts that a given value has a specific flag turned off.
+ * 
+ * @param value Value to check.
+ * @param flag Flag to check for.
+ * @param message Message (sprintf format) to send to the logger.
+ * @param args Optional TParam args for the sprintf message to accept.
+ */
+#define assertFlagOff(value, flag, ...) assertTrue( \
+  (value & flag) == 0, __VA_ARGS__ \
+)
+
+/**
+ * Asserts that a given value has a specific flag turned on.
+ * 
+ * @param value Value to check.
+ * @param flag Flag to check for.
+ * @param message Message (sprintf format) to send to the logger.
+ * @param args Optional TParam args for the sprintf message to accept.
+ */
+#define assertFlagOn(value, flag, ...) assertTrue( \
+  (value & flag) == flag, __VA_ARGS__ \
+)
+
+/**
+ * Asserts that the given string is not null, and has a length that is less
+ * the maximum buffer size, including the NULL terminator.
+ * 
+ * @param str String to check.
+ * @param bufferSize Maximum buffer size.
+ * @param message Message (sprintf format) to send to the logger.
+ * @param args Optional TParam args for the sprintf message to accept.
+ */
+#define assertStringValid(str, bufferSize, ...) assertTrue( \
+  ((str != NULL) && ((strlen(str)+1) < bufferSize)), __VA_ARGS__ \
+)
+
+/**
+ * Asserts that the current code is deprecated and should not be used anymore.
+ * @deprecated
+ */
+#define assertDeprecated(...) assertUnreachable(__VA_ARGS__)

src/dawn/asset/CMakeLists.txt

@@ -0,0 +1,14 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https:#opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    asset.c
+    assetarchive.c
+    assetjson.c
+    assetmap.c
+    assetlanguage.c
+)

src/dawn/asset/asset.c

@@ -0,0 +1,159 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "asset.h"
+#include "assetarchive.h"
+#include "assert/assert.h"
+#include "util/math.h"
+
+void assetInit() {
+  // TODO: Works on Windows? path sep probs wrong.
+  // const char_t *assetFilename = "dawn.tar";
+  // char_t *assetPath = malloc(sizeof(char_t) * (
+  //   strlen(SYSTEM.executableDirectory) + strlen(assetFilename) + 1
+  // ));
+  // sprintf(assetPath, "%s/%s", SYSTEM.executableDirectory, assetFilename);
+  char_t *assetPath = "/home/yourwishes/htdocs/Dawn/build/dawn.tar";
+  ASSET_FILE = fopen(assetPath, "rb");
+  // free(assetPath);
+  assertNotNull(ASSET_FILE, "assetInit: Failed to open asset file!");
+
+  ASSET_ARCHIVE = NULL;
+  ASSET_ENTRY = NULL;
+}
+
+size_t assetReadUntil(uint8_t *buffer, const char_t c, const size_t maxLength) {
+  if(buffer == NULL) {
+    assertTrue(
+      maxLength == -1, "If no buffer is provided, maxLength must be -1."
+    );
+    uint8_t tBuffer[1];
+    size_t read = 0;
+    while(assetRead(tBuffer, 1) == 1 && (char_t)tBuffer[0] != c) read++;
+    return read;
+  } else {
+    size_t read = 0;
+    while(read < maxLength) {
+      // TODO: Read more than 1 char at a time.
+      read += assetRead(buffer + read, 1);
+      if((char_t)buffer[read-1] == c) return read - 1;
+    }
+    return -1;
+  }
+}
+
+void assetOpen(const char_t *path) {
+  assertNull(ASSET_ARCHIVE, "assetOpenFile: Archive is not NULL!");
+  assertNull(ASSET_ENTRY, "assetOpenFile: Entry is not NULL!");
+  assertStringValid(path, 1024, "assetOpenFile: Path is not valid!");
+
+  // Store path
+  strcpy(ASSET_PATH_CURRENT, path);
+
+  // Prepare data
+  ASSET_ARCHIVE = archive_read_new();
+  assertNotNull(ASSET_ARCHIVE, "assetOpenFile: Failed to create archive!");
+
+  // Set up the reader
+  // archive_read_support_filter_bzip2(ASSET_ARCHIVE);
+  archive_read_support_format_tar(ASSET_ARCHIVE);
+
+  // Open reader
+  archive_read_set_open_callback(ASSET_ARCHIVE, &assetArchiveOpen);
+  archive_read_set_read_callback(ASSET_ARCHIVE, &assetArchiveRead);
+  archive_read_set_seek_callback(ASSET_ARCHIVE, &assetArchiveSeek);
+  archive_read_set_close_callback(ASSET_ARCHIVE, &assetArchiveOpen);
+  archive_read_set_callback_data(ASSET_ARCHIVE, ASSET_ARCHIVE_BUFFER);
+
+  int32_t ret =  archive_read_open1(ASSET_ARCHIVE);
+  assertTrue(ret == ARCHIVE_OK, "assetOpenFile: Failed to open archive!");
+
+  // Iterate over each file.
+  while(archive_read_next_header(ASSET_ARCHIVE, &ASSET_ENTRY) == ARCHIVE_OK) {
+    const char_t *headerFile = (char_t*)archive_entry_pathname(ASSET_ENTRY);
+    if(strcmp(headerFile, ASSET_PATH_CURRENT) == 0) return;
+    int32_t ret = archive_read_data_skip(ASSET_ARCHIVE);
+    assertTrue(ret == ARCHIVE_OK, "assetOpenFile: Failed to skip data!");
+  }
+
+  assertUnreachable("assetOpenFile: Failed to find file!");
+}
+
+size_t assetGetSize() {
+  assertNotNull(ASSET_ARCHIVE, "assetGetSize: Archive is NULL!");
+  assertNotNull(ASSET_ENTRY, "assetGetSize: Entry is NULL!");
+  assertTrue(
+    archive_entry_size_is_set(ASSET_ENTRY),
+    "assetGetSize: Entry size is not set!"
+  );
+
+  size_t n = archive_entry_size(ASSET_ENTRY);
+
+  // Remnant when get size was doing some incorrect stuff.
+  // char_t path[2048];
+  // sprintf(
+  //   path, "/home/yourwishes/htdocs/dusk/build/assets/%s", ASSET_PATH_CURRENT
+  // );
+  // FILE *temp = fopen(path, "rb");
+  // assertNotNull(temp, "assetGetSize: Failed to open temp file!");
+  // fseek(temp, 0, SEEK_END);
+  // size_t size = ftell(temp);
+  // assertTrue(size == n, "assetGetSize: Size is not equal!");
+  // fclose(temp);
+
+  return n;
+}
+
+size_t assetRead(uint8_t *buffer, size_t bufferSize) {
+  assertNotNull(ASSET_ARCHIVE, "assetRead: Archive is NULL!");
+  assertNotNull(ASSET_ENTRY, "assetRead: Entry is NULL!");
+  assertNotNull(buffer, "assetRead: Buffer is NULL!");
+  assertTrue(bufferSize > 0, "assetRead: Buffer size must be greater than 0!");
+  ssize_t read = archive_read_data(ASSET_ARCHIVE, buffer, bufferSize);
+  
+  if(read == ARCHIVE_FATAL) {
+    assertUnreachable(archive_error_string(ASSET_ARCHIVE));
+  }
+  
+  assertTrue(read != ARCHIVE_RETRY, "assetRead: Failed to read data (RETRY)!");
+  assertTrue(read != ARCHIVE_WARN, "assetRead: Failed to read data (WARN)!");
+
+  return read;
+}
+
+void assetSkip(const size_t length) {
+  assertNotNull(ASSET_ARCHIVE, "assetSkip: Archive is NULL!");
+  assertNotNull(ASSET_ENTRY, "assetSkip: Entry is NULL!");
+  assertTrue(length > 0, "assetSkip: Length must be greater than 0!");
+  
+  // Asset archive does not support skipping, so we have to read and discard.
+  uint8_t buffer[1024];
+  size_t remaining = length;
+  do {
+    size_t toRead = mathMin(remaining, 1024);
+    size_t read = assetRead(buffer, toRead);
+    assertTrue(read == toRead, "assetSkip: Failed to skip data! (overskip?)");
+    remaining -= read;
+  } while(remaining > 0);
+}
+
+void assetClose() {
+  assertNotNull(ASSET_ARCHIVE, "assetClose: Archive is NULL!");
+  assertNotNull(ASSET_ENTRY, "assetClose: Entry is NULL!");
+  int32_t ret = archive_read_free(ASSET_ARCHIVE);
+  assertTrue(ret == ARCHIVE_OK, "assetClose: Failed to close archive!");
+  ASSET_ARCHIVE = NULL;
+  ASSET_ENTRY = NULL;
+}
+
+void assetDispose() {
+  assertNull(ASSET_ARCHIVE, "assetDestroy: Archive is not NULL!");
+  assertNull(ASSET_ENTRY, "assetDestroy: Entry is not NULL!");
+
+  int32_t result = fclose(ASSET_FILE);
+  assertTrue(result == 0, "assetDestroy: Failed to close asset file!");
+}

src/dawn/asset/asset.h

@@ -0,0 +1,73 @@
+/**
+ * Copyright (c) 2023 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+/**
+ * Initializes the asset manager.
+ */
+void assetInit();
+
+/**
+ * Opens an asset by its filename (within the asset archive). Asset paths should
+ * always use the unix forward slash '/' as a path separator.
+ * 
+ * @param path The path to the asset within the archive.
+ */
+void assetOpen(const char_t *path);
+
+/**
+ * Returns the size of the asset.
+ * 
+ * @return The size of the asset.
+ */
+size_t assetGetSize();
+
+/**
+ * Reads the asset into the buffer.
+ * 
+ * @param buffer The buffer to read the asset into.
+ * @param bufferSize The size of the buffer.
+ * @return The amount of data read.
+ */
+size_t assetRead(uint8_t *buffer, size_t bufferSize);
+
+/**
+ * Reads ahead in the buffer until either the end of the buffer, or the
+ * specified character is found. Return value will be -1 if the character was
+ * not found.
+ * 
+ * Buffer can be NULL if you just want to skip ahead.
+ * 
+ * Returned value will be either the amount of data read into the buffer, which
+ * excludes the extra 1 character that was read from the asset. If the character
+ * was not found, -1 will be returned.
+ * 
+ * @param buffer Buffer to read into.
+ * @param c Character to read until.
+ * @param maxLength Maximum length to read.
+ * @return -1 if the character was not found, otherwise the amount of data read.
+ */
+size_t assetReadUntil(uint8_t *buffer, const char_t c, const size_t maxLength);
+
+/**
+ * Skips ahead in the buffer by the specified length.
+ * 
+ * @param length The length to skip ahead by.
+ */
+void assetSkip(const size_t length);
+
+/**
+ * Closes the asset.
+ */
+void assetClose();
+
+/**
+ * Destroys and cleans up the asset manager.
+ */
+void assetDispose();

src/dawn/asset/assetarchive.c

@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) 2023 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "asset/assetarchive.h"
+#include "assert/assert.h"
+#include "util/math.h"
+
+FILE *ASSET_FILE;
+struct archive *ASSET_ARCHIVE;
+struct archive_entry *ASSET_ENTRY;
+uint8_t ASSET_ARCHIVE_BUFFER[ASSET_BUFFER_SIZE];
+char_t ASSET_PATH_CURRENT[ASSET_PATH_MAX];
+
+ssize_t assetArchiveRead(
+  struct archive *archive,
+  void *data,
+  const void **buffer
+) {
+  assertNotNull(archive, "assetArchiveRead: Archive is NULL!");
+  assertNotNull(data, "assetArchiveRead: Data is NULL!");
+  assertNotNull(buffer, "assetArchiveRead: Buffer is NULL!");
+
+  *buffer = data;
+  size_t read = fread(data, 1, ASSET_BUFFER_SIZE, ASSET_FILE);
+  if(ferror(ASSET_FILE)) return ARCHIVE_FATAL;
+  return read;
+}
+
+int64_t assetArchiveSeek(
+  struct archive *archive,
+  void *data,
+  int64_t offset,
+  int32_t whence
+) {
+  assertNotNull(archive, "assetArchiveSeek: Archive is NULL!");
+  assertNotNull(data, "assetArchiveSeek: Data is NULL!");
+  assertTrue(offset > 0, "assetArchiveSeek: Offset must be greater than 0!");
+  int32_t ret = fseek(ASSET_FILE, offset, whence);
+  assertTrue(ret == 0, "assetArchiveSeek: Failed to seek!");
+  return ftell(ASSET_FILE);
+}
+
+int32_t assetArchiveOpen(struct archive *a, void *data) {
+  int32_t ret = fseek(ASSET_FILE, 0, SEEK_SET);
+  assertTrue(ret == 0, "assetArchiveOpen: Failed to seek to start of file!");
+  return ARCHIVE_OK;
+}
+
+int32_t assetArchiveClose(struct archive *a, void *data) {
+  return assetArchiveOpen(a, data);
+}

src/dawn/asset/assetarchive.h

@@ -0,0 +1,68 @@
+/**
+ * Copyright (c) 2023 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "asset/asset.h"
+#include <archive.h>
+#include <archive_entry.h>
+
+#define ASSET_BUFFER_SIZE 32768
+#define ASSET_PATH_MAX 1024
+
+extern FILE *ASSET_FILE;
+extern struct archive *ASSET_ARCHIVE;
+extern struct archive_entry *ASSET_ENTRY;
+extern uint8_t ASSET_ARCHIVE_BUFFER[ASSET_BUFFER_SIZE];
+extern char_t ASSET_PATH_CURRENT[ASSET_PATH_MAX];
+
+/**
+ * Internal read method provided to libarchive api.
+ * 
+ * @param archive The archive to read from.
+ * @param data The data to read into.
+ * @param buffer The buffer to read from.
+ * @return The amount of data read.
+ */
+ssize_t assetArchiveRead(
+  struct archive *archive,
+  void *data,
+  const void **buffer
+);
+
+/**
+ * Internal seek method provided to libarchive api.
+ * 
+ * @param archive The archive to seek in.
+ * @param data The data to seek in.
+ * @param offset Offset bytes to seek.
+ * @param whence Relative to whence to seek.
+ * @return The new position.
+ */
+int64_t assetArchiveSeek(
+  struct archive *archive,
+  void *data,
+  int64_t offset,
+  int32_t whence
+);
+
+/**
+ * Internal open method provided to libarchive api.
+ * 
+ * @param archive The archive to open.
+ * @param data The data to open.
+ * @return The result of the open.
+ */
+int32_t assetArchiveOpen(struct archive *a, void *data);
+
+/**
+ * Internal close method provided to libarchive api.
+ * 
+ * @param archive The archive to close.
+ * @param data The data to close.
+ * @return The result of the close.
+ */
+int32_t assetArchiveClose(struct archive *a, void *data);

src/dawn/asset/assetjson.c

@@ -0,0 +1,560 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "assetjson.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+
+size_t assetJsonParse(const char_t *json, assetjson_t **out) {
+  size_t offset = assetJsonParseSub(json, out);
+
+  // We only expect whitespace or EOF here
+  char_t c;
+  size_t len = strlen(json);
+  while(offset <= len) {
+    c = json[offset];
+    if(c == '\0') break;
+    if(c == ' ' || c == '\t' || c == '\n' || c == '\r') {
+      offset++;
+      continue;
+    }
+    assertUnreachable("Unexpected character found after JSON data.");
+  }
+  assertTrue(c == '\0', "Unexpected character found after JSON data.");
+  assertTrue(offset == len, "Unexpected character found after JSON data.");
+  return offset;
+}
+
+size_t assetJsonParseSub(
+  const char_t *json,
+  assetjson_t **out
+) {
+  size_t offset = 0;
+  char_t c;
+
+  // Skip whitespace
+  while((c = json[offset]) == ' ' || c == '\t' || c == '\n' || c == '\r') {
+    if(c == '\0') assertUnreachable("Unexpected end of JSON data.");
+    offset++;
+  }
+
+  // Read first character
+  c = json[offset];
+
+  switch(c) {
+    case '{':
+      offset += assetJsonParseAsObject(json + offset, out);
+      break;
+    
+    case '[':
+      offset += assetJsonParseAsArray(json + offset, out);
+      break;
+    
+    case '"':
+      offset += assetJsonParseAsString(json + offset, out);
+      break;
+    
+    case '-':
+    case '0' ... '9':
+    case '.':
+      offset += assetJsonParseAsNumber(json + offset, out);
+      break;
+    
+    case 't':
+    case 'f':
+      offset += assetJsonParseAsBoolean(json + offset, out);
+      break;
+    
+    case 'n':
+      offset += assetJsonParseAsNull(json + offset, out);
+      break;
+
+    default:
+      assertUnreachable("Invalid JSON data type found.");
+      break;
+  }
+
+  return offset;
+}
+
+size_t assetJsonParseAsNull(
+  const char_t *json,
+  assetjson_t **out
+) {
+  assetjson_t *obj = (assetjson_t*)memoryAllocate(sizeof(assetjson_t));
+  // Read "null"
+  assertTrue(json[0] == 'n', "Expected NULL data type. (n0)");
+  assertTrue(json[1] == 'u', "Expected NULL data type. (u0)");
+  assertTrue(json[2] == 'l', "Expected NULL data type. (l0)");
+  assertTrue(json[3] == 'l', "Expected NULL data type. (l1)");
+
+  obj->type = ASSET_JSON_DATA_TYPE_NULL;
+
+  *out = obj;
+
+  return 4;
+}
+
+size_t assetJsonParseAsBoolean(
+  const char_t *json,
+  assetjson_t **out
+) {
+  assetjson_t *obj = (assetjson_t*)memoryAllocate(sizeof(assetjson_t));
+
+  obj->type = ASSET_JSON_DATA_TYPE_BOOLEAN;
+  *out = obj;
+
+  if(json[0] == 't') {
+    // Read "true"
+    assertTrue(json[0] == 't', "Expected TRUE data type. (t0)");
+    assertTrue(json[1] == 'r', "Expected TRUE data type. (r0)");
+    assertTrue(json[2] == 'u', "Expected TRUE data type. (u0)");
+    assertTrue(json[3] == 'e', "Expected TRUE data type. (e0)");
+    obj->boolean = true;
+    return 4;
+  } else {
+    // Read "false"
+    assertTrue(json[0] == 'f', "Expected FALSE data type. (f0)");
+    assertTrue(json[1] == 'a', "Expected FALSE data type. (a0)");
+    assertTrue(json[2] == 'l', "Expected FALSE data type. (l0)");
+    assertTrue(json[3] == 's', "Expected FALSE data type. (s0)");
+    assertTrue(json[4] == 'e', "Expected FALSE data type. (e0)");
+    obj->boolean = false;
+    return 5;
+  }
+}
+
+size_t assetJsonParseAsString(
+  const char_t *json,
+  assetjson_t **out
+) {
+  assetjson_t *obj = memoryAllocate(sizeof(assetjson_t));
+
+  obj->type = ASSET_JSON_DATA_TYPE_STRING;
+
+  // For each char
+  size_t offset = 1;// Skip opening quote
+  size_t outOffset = 0;
+  char c;
+  bool_t inEscape = false;
+  size_t bufferSize = 2;
+  char_t *string = (char_t*)memoryAllocate(bufferSize * sizeof(char_t));
+  while(true) {
+    c = json[offset];
+    if(c == '\0') assertUnreachable("Unexpected end of string.");
+    if(inEscape) {
+      inEscape = false;
+      switch(c) {
+        case 'n':
+          c = '\n';
+          break;
+        
+        case 'r':
+          c = '\r';
+          break;
+        
+        case 't':
+          c = '\t';
+          break;
+        
+        case 'b':
+          c = '\b';
+          break;
+        
+        case 'f':
+          c = '\f';
+          break;
+        
+        case 'u':
+          assertUnreachable("Unicode escape sequences are not supported.");
+          break;
+
+        default:
+          break;
+      }
+
+      if(outOffset >= bufferSize) {
+        bufferSize *= 2;
+        string = memoryReallocate(string, bufferSize * sizeof(char_t));
+      }
+      string[outOffset] = c;
+      offset++;
+      outOffset++;
+      continue;
+    }
+    if(c == '\\') {
+      inEscape = true;
+      offset++;
+      continue;
+    }
+    if(c == '"') break;
+    if(outOffset >= bufferSize) {
+      bufferSize *= 2;
+      string = memoryReallocate(string, bufferSize * sizeof(char_t));
+    }
+    string[outOffset] = c;
+    offset++;
+    outOffset++;
+  }
+  
+  string[outOffset] = '\0';
+  outOffset++;
+
+  *out = obj;
+  obj->string = string;
+  return offset + 1;// For closing string quote
+}
+
+size_t assetJsonParseAsObject(
+  const char_t *json,
+  assetjson_t **out
+) {
+  assetjson_t *obj = memoryAllocate(sizeof(assetjson_t));
+
+  obj->type = ASSET_JSON_DATA_TYPE_OBJECT;
+  
+  size_t bufferSize = 2;
+  char_t **keys = memoryAllocate(bufferSize * sizeof(char_t*));
+  assetjson_t **values = memoryAllocate(bufferSize * sizeof(assetjson_t*));
+  size_t length = 0;
+
+  // Skip whitespace
+  size_t offset = 1;// Skip opening bracket
+  char_t c;
+
+  while(true) {
+    while((c = json[offset]) == ' ' || c == '\t' || c == '\n' || c == '\r') {
+      if(c == '\0') assertUnreachable("Unexpected end of JSON data.");
+      offset++;
+    }
+
+    // Only expect opening string or closing brace
+    if(c == '}') break;
+
+    assertTrue(c == '"', "Expected opening string for JSON object key.");
+    char_t *bufferKey;
+
+    // Skip "
+    offset++;
+    offset += assetJsonReadString(json + offset, &bufferKey);    
+    
+    // Skip whitespace
+    while((c = json[offset]) == ' ' || c == '\t' || c == '\n' || c == '\r') {
+      if(c == '\0') assertUnreachable("Unexpected end of JSON data.");
+      offset++;
+    }
+
+    // Only expect colon
+    assertTrue(c == ':', "Expected colon after JSON object key.");
+    offset++;
+
+    // Skip whitespace
+    while((c = json[offset]) == ' ' || c == '\t' || c == '\n' || c == '\r') {
+      if(c == '\0') assertUnreachable("Unexpected end of JSON data.");
+      offset++;
+    }
+
+    // Parse sub
+    assetjson_t *value;
+    offset += assetJsonParseSub(json + offset, &value);
+    
+    // Need to resize?
+    if(length >= bufferSize) {
+      bufferSize *= 2;
+      keys = memoryReallocate(keys, bufferSize * sizeof(char_t*));
+      values = memoryReallocate(values, bufferSize * sizeof(assetjson_t*));
+    }
+
+    keys[length] = bufferKey;
+    values[length] = value;
+    length++;
+
+    // Skip whitespace
+    while((c = json[offset]) == ' ' || c == '\t' || c == '\n' || c == '\r') {
+      if(c == '\0') assertUnreachable("Unexpected end of JSON data.");
+      offset++;
+    }
+
+    // Expect either comma or closing bracket
+    assertTrue(
+      c == ',' || c == '}',
+      "Expected comma or closing bracket after JSON object value."
+    );
+    if(c == '}') break;
+
+    offset++;
+  }
+
+  obj->object.keys = keys;
+  obj->object.values = values;
+  obj->object.length = length;
+
+  *out = obj;
+  return offset + 1;// Skip closing bracket
+}
+
+size_t assetJsonParseAsArray(
+  const char_t *json,
+  assetjson_t **out
+) {
+  assetjson_t *obj = (assetjson_t*)memoryAllocate(sizeof(assetjson_t));
+
+  obj->type = ASSET_JSON_DATA_TYPE_ARRAY;
+
+  size_t offset = 1;// Skip opening bracket
+  char_t c;
+
+  // Create array
+  size_t arraySize = 2;
+  obj->array.value = (assetjson_t**)memoryAllocate(
+    arraySize * sizeof(assetjson_t*)
+  );
+  obj->array.length = 0;
+  
+  // Until closing bracket
+  while(true) {
+    c = json[offset];
+
+    if(c == '\0') assertUnreachable("Unexpected end of JSON array.");
+
+    if(c == ']') break;
+
+    // Skip whitespace ONLY
+    if(c == ' ' || c == '\t' || c == '\n' || c == '\r') {
+      offset++;
+      continue;
+    }
+
+    // Need to expand?
+    if(obj->array.length >= arraySize) {
+      arraySize *= 2;
+      obj->array.value = memoryReallocate(
+        obj->array.value, arraySize * sizeof(assetjson_t*)
+      );
+    }
+    
+    // Parse sub
+    offset += assetJsonParseSub(
+      json + offset,
+      &obj->array.value[obj->array.length++]
+    );
+
+    // Skip whitespace ONLY
+    while((c = json[offset]) == ' ' || c == '\t' || c == '\n' || c == '\r') {
+      if(c == '\0') assertUnreachable("Unexpected end of JSON data.");
+      offset++;
+    }
+
+    // If comma, continue
+    if(c == ',') {
+      offset++;
+      continue;
+    }
+
+    // If closing bracket, break
+    if(c == ']') break;
+
+    // Else, error
+    assertUnreachable("Unexpected character found in JSON array.");
+  }
+
+  // End of array
+  *out = obj;
+  return offset + 1;// Skip closing bracket
+}
+
+size_t assetJsonParseAsNumber(
+  const char_t *json,
+  assetjson_t **out
+) {
+  assetjson_t *obj = (assetjson_t*)memoryAllocate(sizeof(assetjson_t));
+
+  obj->type = ASSET_JSON_DATA_TYPE_NUMBER;
+
+  // For each char
+  size_t offset = 0;
+  size_t outOffset = 0;
+  char_t c;
+  size_t bufferSize = 2;
+  char_t *buffer = (char_t*)memoryAllocate(bufferSize * sizeof(char_t));
+  bool_t hasDecimal = false;
+  bool_t hasNumber = false;
+
+  // Read number
+  while(true) {
+    c = json[offset];
+    if(c == '\0') assertUnreachable("Unexpected end of number.");
+
+    if(c == '-') {
+      // only accepted on first input
+      assertTrue(outOffset == 0, "Unexpected - after first digit");
+    } else if(c == '.') {
+      // only accepted once
+      assertTrue(!hasDecimal, "Unexpected . after first decimal");
+      hasDecimal = true;
+
+      if(!hasNumber) {
+        // If no number before decimal, add a 0
+        if(outOffset >= bufferSize) {
+          bufferSize *= 2;
+          buffer = memoryReallocate(buffer, bufferSize * sizeof(char_t));
+        }
+        buffer[outOffset] = '0';
+        outOffset++;
+      }
+    } else if(c >= '0' && c <= '9') {
+      hasNumber = true;
+    } else {
+      break;
+    }
+
+    // Need to expand?
+    if(outOffset >= bufferSize) {
+      bufferSize *= 2;
+      buffer = memoryReallocate(buffer, bufferSize * sizeof(char_t));
+    }
+
+    buffer[outOffset] = c;
+    offset++;
+    outOffset++;
+  }
+
+  // Seal the buffer, parse and cleanup
+  buffer[outOffset] = '\0';
+  obj->number = strtod(buffer, NULL);
+  memoryFree(buffer);
+
+  *out = obj;
+  return offset;
+}
+
+size_t assetJsonReadString(
+  const char_t *json,
+  char_t **buffer
+) {
+  size_t offset = 0;
+  size_t outOffset = 0;
+  char_t c;
+  size_t bufferSize = 32;
+  char_t *string = (char_t*)memoryAllocate(sizeof(char_t) * bufferSize);
+  bool_t inEscape = false;
+
+  // For each char
+  while(true) {
+    c = json[offset];
+    if(c == '\0') assertUnreachable("Unexpected end of string.");
+
+    if(inEscape) {
+      inEscape = false;
+      switch(c) {
+        case 'n':
+          c = '\n';
+          break;
+        
+        case 'r':
+          c = '\r';
+          break;
+        
+        case 't':
+          c = '\t';
+          break;
+        
+        case 'b':
+          c = '\b';
+          break;
+        
+        case 'f':
+          c = '\f';
+          break;
+        
+        case 'u':
+          assertUnreachable("Unicode escape sequences are not supported.");
+          break;
+
+        default:
+          break;
+      }
+
+      if(outOffset >= bufferSize) {
+        bufferSize *= 2;
+        string = memoryReallocate(string, bufferSize);
+      }
+      string[outOffset] = c;
+      offset++;
+      outOffset++;
+      continue;
+    }
+    
+    if(c == '\\') {
+      inEscape = true;
+      offset++;
+      continue;
+    }
+
+    if(c == '"') break;
+
+    if(outOffset >= bufferSize) {
+      bufferSize *= 2;
+      string = memoryReallocate(string, bufferSize);
+    }
+    string[outOffset] = c;
+    offset++;
+    outOffset++;
+  }
+
+  string[outOffset] = '\0';
+  outOffset++;
+  *buffer = string;
+  return offset + 1;
+}
+
+assetjson_t * assetJsonGetObjectValue(assetjson_t *json, const char_t *key) {
+  assertTrue(json->type == ASSET_JSON_DATA_TYPE_OBJECT, "Expected JSON object.");
+
+  for(size_t i = 0; i < json->object.length; i++) {
+    if(strcmp(json->object.keys[i], key) == 0) {
+      return json->object.values[i];
+    }
+  }
+
+  return NULL;
+}
+
+void assetJsonDispose(assetjson_t *json) {
+  switch(json->type) {
+    case ASSET_JSON_DATA_TYPE_OBJECT:
+      for(size_t i = 0; i < json->object.length; i++) {
+        memoryFree(json->object.keys[i]);
+        assetJsonDispose(json->object.values[i]);
+      }
+      memoryFree(json->object.keys);
+      memoryFree(json->object.values);
+      break;
+    
+    case ASSET_JSON_DATA_TYPE_ARRAY:
+      for(size_t i = 0; i < json->array.length; i++) {
+        assetJsonDispose(json->array.value[i]);
+      }
+      memoryFree(json->array.value);
+      break;
+    
+    case ASSET_JSON_DATA_TYPE_STRING:
+      memoryFree(json->string);
+      break;
+    
+    case ASSET_JSON_DATA_TYPE_NUMBER:
+      break;
+    
+    case ASSET_JSON_DATA_TYPE_BOOLEAN:
+      break;
+    
+    case ASSET_JSON_DATA_TYPE_NULL:
+      break;
+  }
+
+  memoryFree(json);
+}

src/dawn/asset/assetjson.h

@@ -0,0 +1,140 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+typedef enum {
+  ASSET_JSON_DATA_TYPE_OBJECT,
+  ASSET_JSON_DATA_TYPE_ARRAY,
+  ASSET_JSON_DATA_TYPE_STRING,
+  ASSET_JSON_DATA_TYPE_NUMBER,
+  ASSET_JSON_DATA_TYPE_BOOLEAN,
+  ASSET_JSON_DATA_TYPE_NULL
+} assetjsondatatype_t;
+
+typedef struct _assetjson_t assetjson_t;
+
+typedef struct _assetjson_t {
+  assetjsondatatype_t type;
+
+  union {
+    struct {
+      char_t **keys;
+      assetjson_t **values;
+      size_t length;
+    } object;
+
+    struct {
+      assetjson_t **value;
+      size_t length;
+    } array;
+
+    double_t number;
+    char_t *string;
+    bool_t boolean;
+  };
+} assetjson_t;
+
+/**
+ * Parses a JSON string.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+size_t assetJsonParse(const char_t *json, assetjson_t **out);
+
+/**
+ * Parses a JSON string as a sub-object.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+size_t assetJsonParseSub(const char_t *json, assetjson_t **out);
+
+/**
+ * Parses a JSON string as a NULL value.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+size_t assetJsonParseAsNull(const char_t *json, assetjson_t **out);
+
+/**
+ * Parses a JSON string as a boolean value.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+size_t assetJsonParseAsBoolean(const char_t *json, assetjson_t **out);
+
+/**
+ * Parses a JSON string as an object.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+size_t assetJsonParseAsObject(const char_t *json, assetjson_t **out);
+
+/**
+ * Parses a JSON string as an array.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+size_t assetJsonParseAsArray(const char_t *json, assetjson_t **out);
+
+/**
+ * Parses a JSON string as a string.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+size_t assetJsonParseAsString(const char_t *json, assetjson_t **out);
+
+/**
+ * Parses a JSON string as a number.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+size_t assetJsonParseAsNumber(const char_t *json, assetjson_t **out);
+
+/**
+ * Parses a JSON string as a string.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+size_t assetJsonReadString(const char_t *json, char_t **out);
+
+/**
+ * Parses a JSON string as a number.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+assetjson_t *assetJsonGetObjectValue(assetjson_t *object, const char_t *key);
+
+/**
+ * Parses a JSON string as a number.
+ * 
+ * @param json JSON string to parse.
+ * @param out Pointer to store the parsed JSON object.
+ * @return The number of characters parsed.
+ */
+void assetJsonDispose(assetjson_t *json);

src/dawn/asset/assetlanguage.c

@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "assetlanguage.h"
+#include "asset/asset.h"
+#include "assert/assert.h"
+#include "locale/language.h"
+#include "util/memory.h"
+
+void assetLanguageObjectLoad(
+  const char_t *key,
+  assetjson_t *json
+) {
+  char_t tKey[LANGUAGE_STRING_KEY_LENGTH_MAX];
+  size_t keyLength = strlen(key);
+  strcpy(tKey, key);
+  if(keyLength > 0) {
+    tKey[keyLength] = '.';
+    keyLength++;
+  }
+
+  for(int32_t i = 0; i < json->object.length; i++) {
+    const char_t *subKey = json->object.keys[i];
+    assetjson_t *value = json->object.values[i];
+    strcpy(tKey + keyLength, subKey);
+
+    if(json->object.values[i]->type == ASSET_JSON_DATA_TYPE_OBJECT) {
+      assetLanguageObjectLoad(tKey, value);
+      continue;
+    }
+
+    if(json->object.values[i]->type == ASSET_JSON_DATA_TYPE_STRING) {
+      strcpy(LANGUAGE.keys[LANGUAGE.count], tKey);
+      strcpy(LANGUAGE.strings[LANGUAGE.count], value->string);
+      LANGUAGE.count++;
+      continue;
+    }
+
+    assertUnreachable("Language value is not a string or object!");
+  }
+}
+
+void assetLanguageLoad(const char_t *path) {
+  assertNotNull(path, "Path cannot be NULL.");
+
+  assetOpen(path);
+  size_t length = assetGetSize();
+  char_t *buffer = memoryAllocate(sizeof(char_t) * (length + 1));
+  buffer[length] = '\0';
+  size_t read = assetRead((uint8_t*)buffer, length);
+  assertTrue(read == length, "Failed to read language file!");
+  assetClose();
+
+  assetjson_t *json;
+  read = assetJsonParse(buffer, &json);
+  memoryFree(buffer);
+
+  assertTrue(
+    json->type == ASSET_JSON_DATA_TYPE_OBJECT,
+    "Language file is not an object!"
+  );
+
+  languageInit();
+  assetLanguageObjectLoad("", json);
+  assetJsonDispose(json);
+}

src/dawn/asset/assetlanguage.h

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "asset/assetjson.h"
+
+/**
+ * Loads a JSON object from the asset file.
+ * 
+ * @param key The key to load.
+ * @param json The value to load into.
+ */
+void assetLanguageObjectLoad(
+  const char_t *key,
+  assetjson_t *json
+);
+
+/**
+ * Loads the language file from the specified path.
+ * 
+ * @param path Path to the language file.
+ */
+void assetLanguageLoad(const char_t *path);

src/dawn/asset/assetmap.c

@@ -0,0 +1,236 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "assetmap.h"
+#include "asset/asset.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+
+void assetMapLoadEntity(
+  assetjson_t *jEnt,
+  map_t *map
+) {
+  int32_t x = (int32_t)assetJsonGetObjectValue(jEnt, "x")->number;
+  int32_t y = (int32_t)assetJsonGetObjectValue(jEnt, "y")->number;
+  entitytype_t type = (entitytype_t)assetJsonGetObjectValue(
+    jEnt, "type"
+  )->number;
+
+  entity_t *ent = mapEntityAdd(map);
+  entityInit(ent, type, map);
+  entityPositionSet(ent, x, y);
+
+  assetjson_t *val;
+  switch(type) {
+    case ENTITY_TYPE_NPC:
+      val = assetJsonGetObjectValue(jEnt, "name");
+      if(val != NULL) {
+        assertTrue(
+          val->type == ASSET_JSON_DATA_TYPE_STRING,
+          "assetMapLoad: NPC name is not a string!"
+        );
+        npcNameSet(&ent->npc, val->string);
+      }
+
+      val = assetJsonGetObjectValue(jEnt, "text");
+      if(val != NULL) {
+        assertTrue(
+          val->type == ASSET_JSON_DATA_TYPE_STRING,
+          "assetMapLoad: NPC text is not a string!"
+        );
+        npcTextSet(&ent->npc, val->string);
+      }
+      break;
+
+    case ENTITY_TYPE_SIGN:
+      val = assetJsonGetObjectValue(jEnt, "text");
+      if(val != NULL) {
+        assertTrue(
+          val->type == ASSET_JSON_DATA_TYPE_STRING,
+          "assetMapLoad: Sign text is not a string!"
+        );
+        signTextAppend(&ent->sign, val->string);
+      }
+
+      val = assetJsonGetObjectValue(jEnt, "texts");
+      if(val != NULL) {
+        assertTrue(
+          val->type == ASSET_JSON_DATA_TYPE_ARRAY,
+          "assetMapLoad: Sign texts is not an array!"
+        );
+        assertTrue(
+          val->array.length <= SIGN_TEXT_COUNT_MAX,
+          "assetMapLoad: Too many sign texts!"
+        );
+        for(int32_t i = 0; i < val->array.length; i++) {
+          assetjson_t *subVal = val->array.value[i];
+          assertTrue(
+            subVal->type == ASSET_JSON_DATA_TYPE_STRING,
+            "assetMapLoad: Sign text is not a string!"
+          );
+          signTextAppend(&ent->sign, subVal->string);
+        }
+      }
+      break;
+
+    case ENTITY_TYPE_DOOR:
+      val = assetJsonGetObjectValue(jEnt, "door");
+      if(val != NULL) {
+        assetjson_t *door = assetJsonGetObjectValue(val, "x");
+        x = (int32_t)door->number;
+        assertTrue(
+          door->type == ASSET_JSON_DATA_TYPE_NUMBER,
+          "assetMapLoad: Door x is not a number!"
+        );
+
+        door = assetJsonGetObjectValue(val, "y");
+        y = (int32_t)door->number;
+        assertTrue(
+          door->type == ASSET_JSON_DATA_TYPE_NUMBER,
+          "assetMapLoad: Door y is not a number!"
+        );
+
+        door = assetJsonGetObjectValue(val, "direction");
+        entitydirection_t direction = ENTITY_DIRECTION_SOUTH;
+        if(door != NULL) {
+          direction = (entitydirection_t)(
+            assetJsonGetObjectValue(val, "direction")->number
+          );
+        }
+
+        door = assetJsonGetObjectValue(val, "map");
+        maplist_t list;
+        if(door == NULL) {
+          list = map->list;
+        } else if(door->type == ASSET_JSON_DATA_TYPE_STRING) {
+          list = mapListGet(door->string);
+        } else if(door->type == ASSET_JSON_DATA_TYPE_NUMBER) {
+          list = (maplist_t)door->number;
+        } else {
+          assertUnreachable("assetMapLoad: Door map not string or number!");
+        }
+        doorDestinationSet(&ent->door, x, y, direction, list);
+      }
+      break;
+    
+    default:
+      break;
+  }
+}
+
+void assetMapLoad(
+  const char_t *path,
+  map_t *map
+) {
+  assertNotNull(map, "assetMapLoad: Map is NULL!");
+
+  // Read in the string data.
+  assetOpen(path);
+  size_t length = assetGetSize();
+  char_t *buffer = memoryAllocate(sizeof(char_t) * (length + 1));
+  size_t read = assetRead((uint8_t*)buffer, length);
+  buffer[length] = '\0';
+  assertTrue(read == length, "assetMapLoad: Failed to read map data!");
+  assetClose();
+
+  // Begin parsing JSON data.
+  assetjson_t *json;
+  read = assetJsonParse(buffer, &json);
+  memoryFree(buffer);
+  
+  assertTrue(
+    json->type == ASSET_JSON_DATA_TYPE_OBJECT,
+    "assetMapLoad: Map data is not an object!"
+  );
+
+  int32_t width = (int32_t)assetJsonGetObjectValue(json, "width")->number;
+  int32_t height = (int32_t)assetJsonGetObjectValue(json, "height")->number;
+
+  assetjson_t *layers = assetJsonGetObjectValue(json, "layers");
+  assertTrue(
+    layers->type == ASSET_JSON_DATA_TYPE_ARRAY,
+    "assetMapLoad: Layers is not an array!"
+  );
+
+  int32_t layerCount = layers->array.length;
+  assertTrue(layerCount == MAP_LAYERS_MAX, "assetMapLoad: No layers found!");
+
+  mapInit(map, mapListGet(path), width, height, layerCount);
+
+  // Load tile data.
+  for(int32_t i = 0; i < layerCount; i++) {
+    assetjson_t *layer = layers->array.value[i];
+    assertTrue(
+      layer->type == ASSET_JSON_DATA_TYPE_OBJECT,
+      "assetMapLoad: Layer is not an object!"
+    );
+
+    assetjson_t *tiles = assetJsonGetObjectValue(layer, "tiles");
+    assertTrue(
+      tiles->type == ASSET_JSON_DATA_TYPE_ARRAY,
+      "assetMapLoad: Tiles is not an array!"
+    );
+    assertTrue(
+      tiles->array.length == width * height,
+      "assetMapLoad: Tile count does not match map size!"
+    );
+
+    for(int32_t j = 0; j < width * height; j++) {
+      map->tiles[j] = (tile_t)tiles->array.value[j]->number;
+    }
+  }
+
+  // Load entity data
+  assetjson_t *entities = assetJsonGetObjectValue(json, "entities");
+  if(entities != NULL) {
+    assertTrue(
+      entities->type == ASSET_JSON_DATA_TYPE_ARRAY,
+      "assetMapLoad: Entities is not an array!"
+    );
+
+    for(int32_t i = 0; i < entities->array.length; i++) {
+      assetjson_t *jEnt = entities->array.value[i];
+      assertTrue(
+        jEnt->type == ASSET_JSON_DATA_TYPE_OBJECT,
+        "assetMapLoad: Entity is not an object!"
+      );
+      assetMapLoadEntity(jEnt, map);
+    }
+  }
+
+  // Load trigger data
+  assetjson_t *triggers = assetJsonGetObjectValue(json, "triggers");
+  if(triggers != NULL) {
+    assertTrue(
+      triggers->type == ASSET_JSON_DATA_TYPE_ARRAY,
+      "assetMapLoad: Triggers is not an array!"
+    );
+
+    for(int32_t i = 0; i < triggers->array.length; i++) {
+      assetjson_t *jTrig = triggers->array.value[i];
+      assertTrue(
+        jTrig->type == ASSET_JSON_DATA_TYPE_OBJECT,
+        "assetMapLoad: Trigger is not an object!"
+      );
+
+      int32_t x = (int32_t)assetJsonGetObjectValue(jTrig, "x")->number;
+      int32_t y = (int32_t)assetJsonGetObjectValue(jTrig, "y")->number;
+      int32_t width = (int32_t)assetJsonGetObjectValue(jTrig, "width")->number;
+      int32_t height = (int32_t)assetJsonGetObjectValue(
+        jTrig, "height"
+      )->number;
+      triggertype_t type = (triggertype_t)assetJsonGetObjectValue(
+        jTrig, "type"
+      )->number;
+
+      trigger_t *trigger = mapTriggerAdd(map);
+      triggerInit(trigger, type, x, y, width, height);
+    }
+  }
+
+  assetJsonDispose(json);
+}

src/dawn/asset/assetmap.h

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "rpg/world/map.h"
+#include "asset/assetjson.h"
+
+/**
+ * Loads an entity from the specified JSON object.
+ * 
+ * @param jEnt JSON object to load the entity from.
+ * @param map Map to load the entity into.
+ */
+void assetMapLoadEntity(
+  assetjson_t *jEnt,
+  map_t *map
+);
+
+/**
+ * Loads a map from the specified path.
+ * 
+ * @param path Path to the map file.
+ * @param map Map to load the data into.
+ */
+void assetMapLoad(
+  const char_t *path,
+  map_t *map
+);

src/dawn/dawn.h

@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include <stdio.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include <math.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <float.h>
+#include <errno.h>
+
+typedef bool bool_t;
+typedef char char_t;
+typedef unsigned char uchar_t;
+typedef uint_fast32_t flag_t;

src/dawn/display/CMakeLists.txt

@@ -0,0 +1,15 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+add_subdirectory(draw)
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    color.c
+    frame.c
+    symbol.c
+)

src/dawn/display/animation/animation.h

@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "animationitem.h"
+
+#define ANIMATION_ITEM_COUNT_MAX 64
+
+typedef struct _animation_t {
+  float_t time;
+  bool_t loop;
+
+  float_t duration;
+  animationitem_t items[ANIMATION_ITEM_COUNT_MAX];
+  uint8_t itemCount;
+} animation_t;
+
+/**
+ * Initializes an animation.
+ * @param anim The animation to initialize.
+ */
+void animationInit(animation_t *anim);
+
+/**
+ * Updates an animation.
+ * @param anim The animation to update.
+ * @param delta The time since the last update.
+ */
+void animationUpdate(animation_t *anim, const float_t delta);
+
+/**
+ * Returns the total duration of the animation.
+ * 
+ * @param anim The animation to get the duration of.
+ * @return The total duration of the animation.
+ */
+float_t animationDurationGet(const animation_t *anim);

src/dawn/display/animation/animationitem.h

@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+typedef struct _animation_t animation_t;
+
+typedef struct _animationitem_t {
+  float_t time;
+  float_t duration;
+  void *user;
+
+  void (*start)(animation_t *anim, animationitem_t *item);
+  void (*update)(animation_t *anim,animationitem_t *item,const float_t rDelta);
+} animationitem_t;

src/dawn/display/color.c

@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) 2023 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "color.h"
+#include "assert/assert.h"
+
+const color4f_t COLOR4F_COLOR_MAP[COLOR_COUNT] = {
+  COLOR4F_BLACK,
+  COLOR4F_WHITE,
+  COLOR4F(0.8f, 0.0f, 0.0f, 1.0f),
+  COLOR4F(0.0f, 0.5f, 0.0f, 1.0f),
+  COLOR4F(0.0f, 0.0f, 0.8f, 1.0f),
+  COLOR4F(0.8f, 0.8f, 0.0f, 1.0f),
+  COLOR4F(0.8f, 0.0f, 0.8f, 1.0f),
+  COLOR4F(0.0f, 0.8f, 0.8f, 1.0f),
+  COLOR4F(0.5f, 0.5f, 0.5f, 1.0f),
+  COLOR4F(0.5f, 0.25f, 0.0f, 1.0f)
+};
+
+void color4fCopy(const color4f_t src, color4f_t dest) {
+  memcpy(dest, src, sizeof(color4f_t));
+}

src/dawn/display/color.h

@@ -0,0 +1,81 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+typedef float_t color3f_t[3];
+typedef float_t color4f_t[4];
+
+// Simple colors, used by the frame system.
+#define COLOR_BLACK 0x00
+#define COLOR_WHITE 0x01
+#define COLOR_RED 0x02
+#define COLOR_GREEN 0x03
+#define COLOR_BLUE 0x04
+#define COLOR_YELLOW 0x05
+#define COLOR_MAGENTA 0x06
+#define COLOR_CYAN 0x07
+#define COLOR_GRAY 0x08
+#define COLOR_BROWN 0x09
+
+#define COLOR_COUNT COLOR_BROWN+1
+
+#define COLOR3F(r,g,b) ((color3f_t){ r, g, b })
+#define COLOR3F_RED COLOR3F(1, 0, 0)
+#define COLOR3F_GREEN COLOR3F(0, 1, 0)
+#define COLOR3F_BLUE COLOR3F(0, 0, 1)
+#define COLOR3F_BLACK COLOR3F(0, 0, 0)
+#define COLOR3F_WHITE COLOR3F(1, 1, 1)
+#define COLOR3F_MAGENTA COLOR3F(1, 0, 1)
+#define COLOR3F_YELLOW COLOR3F(1, 1, 0)
+#define COLOR3F_CYAN COLOR3F(0, 1, 1)
+#define COLOR3F_GRAY COLOR3F(0.5f, 0.5f, 0.5f)
+#define COLOR3F_DARKGRAY COLOR3F(0.25f, 0.25f, 0.25f)
+#define COLOR3F_LIGHTGRAY COLOR3F(0.75f, 0.75f, 0.75f)
+#define COLOR3F_ORANGE COLOR3F(1, 0.5f, 0)
+#define COLOR3F_PURPLE COLOR3F(0.5f, 0, 1)
+#define COLOR3F_PINK COLOR3F(1, 0, 0.5f)
+#define COLOR3F_BROWN COLOR3F(0.5f, 0.25f, 0)
+#define COLOR3F_GOLD COLOR3F(1, 0.75f, 0)
+#define COLOR3F_SILVER COLOR3F(0.75f, 0.75f, 0.75f)
+#define COLOR3F_BRONZE COLOR3F(0.75f, 0.5f, 0.25f)
+#define COLOR3F_CORNFLOWERBLUE COLOR3F(0.4f, 0.6f, 0.9f)
+
+#define COLOR4F(r,g,b,a) ((color4f_t){ r, g, b, a })
+#define COLOR4F_RED COLOR4F(1, 0, 0, 1)
+#define COLOR4F_GREEN COLOR4F(0, 1, 0, 1)
+#define COLOR4F_BLUE COLOR4F(0, 0, 1, 1)
+#define COLOR4F_BLACK COLOR4F(0, 0, 0, 1)
+#define COLOR4F_WHITE COLOR4F(1, 1, 1, 1)
+#define COLOR4F_MAGENTA COLOR4F(1, 0, 1, 1)
+#define COLOR4F_YELLOW COLOR4F(1, 1, 0, 1)
+#define COLOR4F_CYAN COLOR4F(0, 1, 1, 1)
+#define COLOR4F_GRAY COLOR4F(0.5f, 0.5f, 0.5f, 1)
+#define COLOR4F_DARKGRAY COLOR4F(0.25f, 0.25f, 0.25f, 1)
+#define COLOR4F_LIGHTGRAY COLOR4F(0.75f, 0.75f, 0.75f, 1)
+#define COLOR4F_ORANGE COLOR4F(1, 0.5f, 0, 1)
+#define COLOR4F_PURPLE COLOR4F(0.5f, 0, 1, 1)
+#define COLOR4F_PINK COLOR4F(1, 0, 0.5f, 1)
+#define COLOR4F_BROWN COLOR4F(0.5f, 0.25f, 0, 1)
+#define COLOR4F_GOLD COLOR4F(1, 0.75f, 0, 1)
+#define COLOR4F_SILVER COLOR4F(0.75f, 0.75f, 0.75f, 1)
+#define COLOR4F_BRONZE COLOR4F(0.75f, 0.5f, 0.25f, 1)
+#define COLOR4F_CORNFLOWERBLUE COLOR4F(0.4f, 0.6f, 0.9f, 1)
+#define COLOR4F_TRANSPARENT_BLACK COLOR4F(0, 0, 0, 0)
+#define COLOR4F_TRANSPARENT_WHITE COLOR4F(1, 1, 1, 0)
+#define COLOR4F_TRANSPARENT COLOR4F_TRANSPARENT_BLACK
+
+extern const color4f_t COLOR4F_COLOR_MAP[COLOR_COUNT];
+
+/**
+ * Copies a color.
+ * 
+ * @param src Source color.
+ * @param dest Destination color.
+ */
+void color4fCopy(const color4f_t src, color4f_t dest);

src/dawn/display/display.h

@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+/**
+ * Initializes the display subsystem.
+ */
+void displayInit();
+
+/**
+ * Updates the display subsystem, this is basically asking the display renderer
+ * to perform a render.
+ */
+void displayUpdate();
+
+/**
+ * Cleans up the display subsystem.
+ */
+void displayDispose();

src/dawn/display/draw/CMakeLists.txt

@@ -0,0 +1,18 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    drawbattle.c
+    drawstatemainmenu.c
+    drawstateoverworld.c
+    drawmap.c
+    drawtext.c
+    drawshape.c
+    drawui.c
+)

src/dawn/display/draw/drawbattle.c

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "drawbattle.h"
+#include "display/draw/drawshape.h"
+#include "display/draw/drawui.h"
+
+void drawBattle() {
+  drawClear(' ', COLOR_WHITE);
+
+  // Draw UI
+  drawUITextbox();
+}

src/dawn/display/draw/drawbattle.h

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+
+/**
+ * Draws the battle state.
+ */
+void drawBattle();

src/dawn/display/draw/drawmap.c

@@ -0,0 +1,91 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "drawmap.h"
+#include "assert/assert.h"
+#include "display/symbol.h"
+
+void drawMap(
+  const map_t *map,
+  const uint16_t cameraX,
+  const uint16_t cameraY,
+  const uint16_t drawX,
+  const uint16_t drawY,
+  const uint16_t drawWidth,
+  const uint16_t drawHeight
+) {
+  assertNotNull(map, "Map cannot be NULL.");
+  assertTrue(drawX < FRAME_WIDTH, "Map is too far right.");
+  assertTrue(drawY < FRAME_HEIGHT, "Map is too far down.");
+  assertTrue(drawWidth > 0, "Map is too narrow.");
+  assertTrue(drawHeight > 0, "Map is too short.");
+  assertTrue(drawX + drawWidth <= FRAME_WIDTH, "Map is too wide.");
+  assertTrue(drawY + drawHeight <= FRAME_HEIGHT, "Map is too tall.");
+
+  entity_t *ent;
+  tile_t tile;
+  uint32_t i;
+  char_t *bufferDest;
+  uint8_t *colorDest;
+
+  // If the size of the map's smaller than the frame, center it, otherwise use
+  // the cameraPosition as the center point.
+  int16_t offsetX = 0, offsetY = 0;
+  if(map->width < drawWidth) {
+    offsetX = (drawWidth - map->width) / 2;
+  } else {
+    // Clamp to map bounds
+    if(cameraX < drawWidth / 2) {
+      offsetX = 0;
+    } else if(cameraX >= map->width - (drawWidth / 2)) {
+      offsetX = -(map->width - drawWidth);
+    } else {
+      offsetX = -(cameraX - (drawWidth / 2));
+    }
+  }
+
+  if(map->height < drawHeight) {
+    offsetY = (drawHeight - map->height) / 2;
+  } else {
+    // Clamp to map bounds
+    if(cameraY < drawHeight / 2) {
+      offsetY = 0;
+    } else if(cameraY >= map->height - (drawHeight / 2)) {
+      offsetY = -(map->height - drawHeight);
+    } else {
+      offsetY = -(cameraY - (drawHeight / 2));
+    }
+  }
+
+  // Draw the map
+  i = 0;
+  for(uint16_t y = 0; y < drawHeight; y++) {
+    bufferDest = &FRAME_BUFFER[(drawY + y) * FRAME_WIDTH + drawX];
+    colorDest = &FRAME_COLOR[(drawY + y) * FRAME_WIDTH + drawX];
+
+    for(uint16_t x = 0; x < drawWidth; x++) {
+      if(x < offsetX || y < offsetY || x >= map->width + offsetX || y >= map->height + offsetY) {
+        colorDest[x] = COLOR_BLACK;
+        bufferDest[x] = ' ';
+        continue;
+      }
+
+      // Entity?
+      ent = mapEntityGetByPosition(map, x - offsetX, y - offsetY);
+      if(ent != NULL) {
+        colorDest[x] = symbolGetColorByEntity(ent);
+        bufferDest[x] = symbolGetCharByEntity(ent);
+        continue;
+      }
+
+      // Tile?
+      tile = mapTileGetByPosition(map, x - offsetX, y - offsetY, 0);
+      colorDest[x] = tileColorGet(tile);
+      bufferDest[x] = tileSymbolGet(tile);
+    }
+  }
+}

src/dawn/display/draw/drawmap.h

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/frame.h"
+#include "rpg/world/map.h"
+
+/**
+ * Draws a map to a region of the screen.
+ * 
+ * @param map Map to draw.
+ * @param cameraX X position of the camera.
+ * @param cameraY Y position of the camera.
+ * @param drawX X position to draw the map.
+ * @param drawY Y position to draw the map.
+ * @param drawWidth Width of the map to draw.
+ * @param drawHeight Height of the map to draw.
+ */
+void drawMap(
+  const map_t *map,
+  const uint16_t cameraX,
+  const uint16_t cameraY,
+  const uint16_t drawX,
+  const uint16_t drawY,
+  const uint16_t drawWidth,
+  const uint16_t drawHeight
+);

src/dawn/display/draw/drawshape.c

@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "drawshape.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+
+void drawClear(
+  const char_t c,
+  const uint8_t color
+) {
+  memorySet(FRAME_BUFFER, c, FRAME_HEIGHT * FRAME_WIDTH);
+  memorySet(FRAME_COLOR, color, FRAME_HEIGHT * FRAME_WIDTH);
+}
+
+void drawBox(
+  const uint16_t x,
+  const uint16_t y,
+  const uint16_t width,
+  const uint16_t height,
+  const char_t c,
+  const uint8_t color
+) {
+  assertTrue(x < FRAME_WIDTH, "Box is too far right.");
+  assertTrue(y < FRAME_HEIGHT, "Box is too far down.");
+  if(width == 0 || height == 0) return;
+  assertTrue(x + width <= FRAME_WIDTH, "Box is too wide.");
+  assertTrue(y + height <= FRAME_HEIGHT, "Box is too tall.");
+
+  if(width == FRAME_WIDTH) {
+    memorySet(&FRAME_BUFFER[y * FRAME_WIDTH + x], c, height * width);
+    memorySet(&FRAME_COLOR[y * FRAME_WIDTH + x], color, height * width);
+    return;
+  }
+
+  for(uint16_t iy = 0; iy < height; iy++) {
+    memorySet(&FRAME_BUFFER[(y + iy) * FRAME_WIDTH + x], c, width);
+    memorySet(&FRAME_COLOR[(y + iy) * FRAME_WIDTH + x], color, width);
+  }
+}

src/dawn/display/draw/drawshape.h

@@ -0,0 +1,39 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/frame.h"
+
+/**
+ * Clears the frame buffer with a character and color.
+ * 
+ * @param c Character to clear the frame buffer with.
+ * @param color Color to clear the frame buffer with.
+ */
+void drawClear(
+  const char_t c,
+  const uint8_t color
+);
+
+/**
+ * Draws a box to the frame buffer.
+ * 
+ * @param x The x position to draw the box.
+ * @param y The y position to draw the box.
+ * @param width The width of the box.
+ * @param height The height of the box.
+ * @param c The character to draw the box with.
+ * @param color The color to draw the box.
+ */
+void drawBox(
+  const uint16_t x,
+  const uint16_t y,
+  const uint16_t width,
+  const uint16_t height,
+  const char_t c,
+  const uint8_t color
+);

src/dawn/display/draw/drawstatemainmenu.c

@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "drawstatemainmenu.h"
+#include "display/draw/drawtext.h"
+#include "display/draw/drawui.h"
+#include "ui/mainmenu.h"
+
+void drawStateMainMenu() {
+  // Draw the logo
+  drawText("Dawn", 4, 0, 0, COLOR_WHITE);
+
+  // Draw the menu
+  uint16_t width = menuGetLongestStringLength(&MAIN_MENU) + 3;
+  uint16_t height = MAIN_MENU.rows + 2;
+  drawUIMenuBox(
+    &MAIN_MENU,
+    (FRAME_WIDTH - width) / 2, FRAME_HEIGHT - height - 4,
+    width, height,
+    COLOR_WHITE, COLOR_WHITE, COLOR_WHITE
+  );
+}

src/dawn/display/draw/drawstatemainmenu.h

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/frame.h"
+
+/**
+ * Draws the main menu state.
+ */
+void drawStateMainMenu();

src/dawn/display/draw/drawstateoverworld.c

@@ -0,0 +1,39 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "drawstateoverworld.h"
+#include "ui/textbox.h"
+#include "rpg/world/map.h"
+#include "game/game.h"
+#include "display/draw/drawmap.h"
+#include "display/draw/drawui.h"
+
+void drawStateOverworld() {
+  map_t *map = GAME.currentMap;
+  if(map == NULL) return;
+
+  // Draw the map, based on player position
+  entity_t *player = mapEntityGetByType(map, ENTITY_TYPE_PLAYER);
+  uint16_t cameraPositionX, cameraPositionY;
+  if(player == NULL) {
+    cameraPositionX = 0;
+    cameraPositionY = 0;
+  } else {
+    cameraPositionX = player->x;
+    cameraPositionY = player->y;
+  }
+
+  drawMap(
+    GAME.currentMap,
+    cameraPositionX, cameraPositionY,
+    0, 0,
+    FRAME_WIDTH, FRAME_HEIGHT
+  );
+
+  // Draw UI
+  drawUITextbox();
+}

src/dawn/display/draw/drawstateoverworld.h

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/frame.h"
+
+/**
+ * Draws the overworld state.
+ */
+void drawStateOverworld();

src/dawn/display/draw/drawtext.c

@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "drawtext.h"
+#include "assert/assert.h"
+#include "util/math.h"
+
+void drawText(
+  const char_t *text,
+  const size_t len,
+  const uint16_t x,
+  const uint16_t y,
+  const uint8_t color
+) {
+  if(len == 0) return;
+  size_t rLen = mathMin(len, strlen(text));
+  if(rLen == 0) return;
+  
+  assertTrue(x < FRAME_WIDTH, "Text is too far right.");
+  assertTrue(y < FRAME_HEIGHT, "Text is too low.");
+  
+  char_t c;
+  uint16_t xPos = x;
+  uint16_t yPos = y * FRAME_WIDTH;
+  size_t i = 0;
+  do {
+    c = text[i++];
+    if(c == '\n') {
+      yPos += FRAME_WIDTH;
+      xPos = x;
+      continue;
+    }
+
+    assertTrue(xPos < FRAME_WIDTH, "Text overflows right.");
+    
+    FRAME_BUFFER[yPos + xPos] = c;
+    FRAME_COLOR[yPos + xPos] = color;
+    xPos++;
+  } while(i < rLen);
+}

src/dawn/display/draw/drawtext.h

@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/frame.h"
+
+/**
+ * Draws some text to the frame buffer.
+ * 
+ * @param text The text to draw.
+ * @param len The length of the text to draw.
+ * @param x The x position to draw the text.
+ * @param y The y position to draw the text.
+ * @param color The color to draw the text.
+ */
+void drawText(
+  const char_t *text,
+  const size_t len,
+  const uint16_t x,
+  const uint16_t y,
+  const uint8_t color
+);

src/dawn/display/draw/drawui.c

@@ -0,0 +1,229 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "drawui.h"
+#include "drawshape.h"
+#include "assert/assert.h"
+#include "game/time.h"
+#include "display/draw/drawtext.h"
+#include "ui/textbox.h"
+#include "ui/testmenu.h"
+#include "util/math.h"
+#include "util/memory.h"
+
+void drawUIBox(
+  const uint16_t x,
+  const uint16_t y,
+  const uint16_t width,
+  const uint16_t height,
+  const uint8_t color,
+  const bool_t fill
+) {
+  assertTrue(x < FRAME_WIDTH, "Box is too far right.");
+  assertTrue(y < FRAME_HEIGHT, "Box is too far down.");
+  assertTrue(width > 2, "Box is too narrow.");
+  assertTrue(height > 2, "Box is too short.");
+  assertTrue(x + width <= FRAME_WIDTH, "Box is too wide.");
+  assertTrue(y + height <= FRAME_HEIGHT, "Box is too tall.");
+
+  // Draw the top and bottom borders
+  for(uint16_t i = 0; i < width; i++) {
+    FRAME_BUFFER[y * FRAME_WIDTH + x + i] = '-';
+    FRAME_BUFFER[(y + height - 1) * FRAME_WIDTH + x + i] = '-';
+    FRAME_COLOR[y * FRAME_WIDTH + x + i] = color;
+    FRAME_COLOR[(y + height - 1) * FRAME_WIDTH + x + i] = color;
+  }
+
+  // Draw the left and right borders
+  for(uint16_t i = 0; i < height; i++) {
+    FRAME_BUFFER[(y + i) * FRAME_WIDTH + x] = '|';
+    FRAME_BUFFER[(y + i) * FRAME_WIDTH + x + width - 1] = '|';
+    FRAME_COLOR[(y + i) * FRAME_WIDTH + x] = color;
+    FRAME_COLOR[(y + i) * FRAME_WIDTH + x + width - 1] = color;
+  }
+
+  // Draw the corners
+  FRAME_BUFFER[y * FRAME_WIDTH + x] = '+';
+  FRAME_BUFFER[y * FRAME_WIDTH + x + width - 1] = '+';
+  FRAME_BUFFER[(y + height - 1) * FRAME_WIDTH + x] = '+';
+  FRAME_BUFFER[(y + height - 1) * FRAME_WIDTH + x + width - 1] = '+';
+  FRAME_COLOR[y * FRAME_WIDTH + x] = color;
+  FRAME_COLOR[y * FRAME_WIDTH + x + width - 1] = color;
+  FRAME_COLOR[(y + height - 1) * FRAME_WIDTH + x] = color;
+  FRAME_COLOR[(y + height - 1) * FRAME_WIDTH + x + width - 1] = color;
+
+  // Fill the inside
+  if(!fill) return;
+  drawBox(x + 1, y + 1, width - 2, height - 2, ' ', COLOR_BLACK);
+}
+
+void drawUIMenu(
+  menu_t *menu,
+  const uint16_t x,
+  const uint16_t y,
+  const uint16_t width,
+  const uint16_t height,
+  const uint8_t cursorColor,
+  const uint8_t textColor
+) {
+  assertTrue(menu, "Menu cannot be NULL.");
+  assertTrue(menu->rows > 0, "Rows must be greater than 0.");
+  assertTrue(menu->columns > 0, "Columns must be greater than 0.");
+  assertTrue(width*2 > menu->columns, "Width must be greater than columns.");
+
+  uint16_t colWidth;
+  uint16_t startingCol;
+  uint16_t startingRow;
+  uint16_t rowCount;
+  uint16_t colCount;
+  char_t *str;
+  size_t i;
+
+  // Determine the width of each column. This must include space for the cursor
+  // and the text.
+  if(menu->columns == 1 || rowCount == 0) {
+    colWidth = width;
+    colCount = 1;
+  } else {
+    size_t longestString = 0;
+    i = 0;
+    while(true) {
+      str = menu->strings[i++];
+      if(str == NULL) break;
+
+      size_t len = strlen(str);
+      if(len > longestString) longestString = len;
+
+      // If we overrun the size of the box, we can stop looking.
+      if((len+1) > width) {
+        longestString = width;
+        break;
+      }
+    }
+
+    // How many columns can we fit?
+    uint16_t possibleColumnsAtThisWidth = width / (longestString + 1);
+
+    if(possibleColumnsAtThisWidth < menu->columns) {
+      // We need to take a subset of the columns
+      colWidth = width / possibleColumnsAtThisWidth;
+      colCount = possibleColumnsAtThisWidth;
+    } else {
+      // We can fit all columns in
+      colWidth = width / menu->columns;
+      colCount = menu->columns;
+    }
+
+    assertTrue(longestString != 0, "Longest string has length 0?");
+  }
+
+  // Determine count of rows to render
+  if(rowCount == 1) {
+    rowCount = 1;
+  } else {
+    rowCount = mathMin(rowCount, height);
+  }
+
+  // Where are we rendering from?
+  startingCol = menu->renderOffsetX;
+
+  if(menu->x >= startingCol + colCount) {
+    startingCol = (menu->x + 1) - colCount;
+  } else if(menu->x < startingCol) {
+    startingCol = menu->x;
+  }
+
+  startingRow = menu->renderOffsetY;
+  if(menu->y >= startingRow + rowCount) {
+    startingRow = (menu->y + 1) - rowCount;
+  } else if(menu->y < startingRow) {
+    startingRow = menu->y;
+  }
+
+  // Update back to the menu
+  menu->renderOffsetX = startingCol;
+  menu->renderOffsetY = startingRow;
+
+  for(uint16_t col = startingCol; col < startingCol+colCount; col++) {
+    for(uint16_t row = startingRow; row < startingRow+rowCount; row++) {
+      uint16_t index = (row * menu->columns) + col;
+      if(menu->strings[index] == NULL) continue;
+
+      drawText(
+        menu->strings[index],
+        colWidth,
+        x + (colWidth * (col - startingCol)) + 1,
+        y + (row - startingRow),
+        textColor
+      );
+    }
+  }
+
+  // Draw the cursor
+  i = (
+    x + ((menu->x - startingCol) * colWidth)
+  ) + (
+    (y + (menu->y - startingRow)) * FRAME_WIDTH
+  );
+  FRAME_BUFFER[i] = '>';
+  FRAME_COLOR[i] = cursorColor;
+}
+
+void drawUIMenuBox(
+  menu_t *menu,
+  const uint16_t x,
+  const uint16_t y,
+  const uint16_t width,
+  const uint16_t height,
+  const uint8_t cursorColor,
+  const uint8_t textColor,
+  const uint8_t boxColor
+) {
+  drawUIBox(x, y, width, height, boxColor, true);
+  drawUIMenu(
+    menu,
+    x + 1, y + 1,
+    width - 2, height - 2,
+    cursorColor, textColor
+  );
+}
+
+void drawUITextbox() {
+  if(!textboxIsOpen()) return;
+
+  // Border
+  drawUIBox(
+    0, FRAME_HEIGHT - DRAW_UI_TEXTBOX_HEIGHT,
+    DRAW_UI_TEXTBOX_WIDTH, DRAW_UI_TEXTBOX_HEIGHT,
+    COLOR_MAGENTA, true
+  );
+
+  // Title
+  drawText(
+    TEXTBOX.title,
+    -1,
+    2, FRAME_HEIGHT - DRAW_UI_TEXTBOX_HEIGHT,
+    COLOR_WHITE
+  );
+
+  // Text
+  drawText(
+    TEXTBOX.text,
+    TEXTBOX.textIndex,
+    1, FRAME_HEIGHT - DRAW_UI_TEXTBOX_HEIGHT + 1,
+    COLOR_WHITE
+  );
+
+  // Blinking cursor
+  memorySet(&FRAME_BUFFER[DRAW_UI_TEXTBOX_CURSOR_POS], ' ', 3);
+  memorySet(&FRAME_COLOR[DRAW_UI_TEXTBOX_CURSOR_POS], COLOR_WHITE, 3);
+  if(TEXTBOX.textIndex < TEXTBOX.textLength) return;
+  
+  int32_t blink = (int32_t)(TIME.time * DRAW_UI_TEXTBOX_BLINKS_PER_SECOND) % 2;
+  FRAME_BUFFER[DRAW_UI_TEXTBOX_CURSOR_POS + 1] = blink ? '>' : ' ';
+  FRAME_BUFFER[DRAW_UI_TEXTBOX_CURSOR_POS + 2] = blink ? ' ' : '>';
+}

src/dawn/display/draw/drawui.h

@@ -0,0 +1,83 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/frame.h"
+#include "ui/menu.h"
+
+#define DRAW_UI_TEXTBOX_WIDTH FRAME_WIDTH
+#define DRAW_UI_TEXTBOX_HEIGHT 8
+#define DRAW_UI_TEXTBOX_CURSOR_POS ((FRAME_HEIGHT * FRAME_WIDTH) - 4)
+#define DRAW_UI_TEXTBOX_BLINKS_PER_SECOND 2
+
+/**
+ * Draws a UI box to the frame buffer.
+ * 
+ * @param x The x position to draw the border.
+ * @param y The y position to draw the border.
+ * @param width The width of the border.
+ * @param height The height of the border.
+ * @param color The color to draw the border.
+ * @param fill Whether or not to fill the inside of the border.
+ */
+void drawUIBox(
+  const uint16_t x,
+  const uint16_t y,
+  const uint16_t width,
+  const uint16_t height,
+  const uint8_t color,
+  const bool_t fill
+);
+
+/**
+ * Draws a UI menu to the frame buffer.
+ * 
+ * @param menu The menu to draw.
+ * @param x The x position to draw the menu.
+ * @param y The y position to draw the menu.
+ * @param width The width of the menu.
+ * @param height The height of the menu.
+ * @param cursorColor The color of the cursor.
+ * @param textColor The color of the text.
+ */
+void drawUIMenu(
+  menu_t *menu,
+  const uint16_t x,
+  const uint16_t y,
+  const uint16_t width,
+  const uint16_t height,
+  const uint8_t cursorColor,
+  const uint8_t textColor
+);
+
+/**
+ * Draws a UI menu box to the frame buffer.
+ * 
+ * @param menu The menu to draw.
+ * @param x The x position to draw the menu.
+ * @param y The y position to draw the menu.
+ * @param width The width of the menu.
+ * @param height The height of the menu.
+ * @param cursorColor The color of the cursor.
+ * @param textColor The color of the text.
+ * @param boxColor The color of the box.
+ */
+void drawUIMenuBox(
+  menu_t *menu,
+  const uint16_t x,
+  const uint16_t y,
+  const uint16_t width,
+  const uint16_t height,
+  const uint8_t cursorColor,
+  const uint8_t textColor,
+  const uint8_t boxColor
+);
+
+/**
+ * Draws the UI textbox to the frame buffer.
+ */
+void drawUITextbox();

src/dawn/display/frame.c

@@ -0,0 +1,54 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "frame.h"
+#include "game/game.h"
+
+#include "display/draw/drawshape.h"
+#include "display/draw/drawtext.h"
+#include "display/draw/drawstateoverworld.h"
+#include "display/draw/drawstatemainmenu.h"
+#include "display/draw/drawbattle.h"
+
+char_t FRAME_BUFFER[FRAME_HEIGHT * FRAME_WIDTH];
+uint8_t FRAME_COLOR[FRAME_HEIGHT * FRAME_WIDTH];
+
+void frameInit() {
+  drawClear(' ', COLOR_BLACK);
+}
+
+void frameUpdate() {
+  switch(GAME.state) {
+    case GAME_STATE_PAUSED:
+      const char_t *str = "PAUSED";
+      size_t len = strlen(str);
+      drawText(
+        str,
+        -1,
+        (FRAME_WIDTH - len) / 2,
+        (FRAME_HEIGHT - 1) / 2,
+        COLOR_WHITE
+      );
+      break;
+
+    case GAME_STATE_OVERWORLD:
+      drawStateOverworld();
+      break;
+    
+    case GAME_STATE_MAIN_MENU:
+      drawStateMainMenu();
+      break;
+
+    case GAME_STATE_BATTLE:
+      drawBattle();
+      break;
+    
+    default:
+      printf("Rendering unknown game state: %d\n", GAME.state);
+      break;
+  }
+}

src/dawn/display/frame.h

@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/color.h"
+
+#define FRAME_CHAR_SIZE 8
+#define FRAME_PIXEL_WIDTH 320
+#define FRAME_PIXEL_HEIGHT 240
+#define FRAME_WIDTH FRAME_PIXEL_WIDTH/FRAME_CHAR_SIZE
+#define FRAME_HEIGHT FRAME_PIXEL_HEIGHT/FRAME_CHAR_SIZE
+
+extern char_t FRAME_BUFFER[FRAME_HEIGHT * FRAME_WIDTH];
+extern uint8_t FRAME_COLOR[FRAME_HEIGHT * FRAME_WIDTH];
+
+/**
+ * Initializes the frame buffer.
+ */
+void frameInit();
+
+/**
+ * Updates the terminal frame.
+ */
+void frameUpdate();
+
+/**
+ * Clears the frame buffer.
+ */
+void frameClear();

src/dawn/display/symbol.c

@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "assert/assert.h"
+#include "rpg/entity/entitydirection.h"
+#include "symbol.h"
+#include "game/time.h"
+
+char_t symbolGetCharByEntity(const entity_t *ent) {
+  assertNotNull(ent, "Entity cannot be NULL.");
+
+  switch(ent->type) {
+    case ENTITY_TYPE_SIGN:
+      return '+';
+
+    case ENTITY_TYPE_DOOR:
+      return 'D';
+
+    default:
+      break;
+  }
+
+  switch(ent->direction) {
+    case ENTITY_DIRECTION_EAST: return '>';
+    case ENTITY_DIRECTION_WEST: return '<';
+    case ENTITY_DIRECTION_NORTH: return '^';
+    case ENTITY_DIRECTION_SOUTH: return 'v';
+    default:
+      assertUnreachable("Invalid entity direction.");
+  }
+}
+
+uint8_t symbolGetColorByEntity(const entity_t *ent) {
+  assertNotNull(ent, "Entity cannot be NULL.");
+  switch(ent->type) {
+    case ENTITY_TYPE_PLAYER:
+      return COLOR_RED;
+
+    case ENTITY_TYPE_NPC:
+      return COLOR_MAGENTA;
+    
+    case ENTITY_TYPE_SIGN:
+      return COLOR_YELLOW;
+
+    case ENTITY_TYPE_DOOR:
+      return COLOR_BROWN;
+
+    default:
+      assertUnreachable("Invalid entity type.");
+  }
+}

src/dawn/display/symbol.h

@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "rpg/entity/entity.h"
+#include "display/color.h"
+
+/**
+ * Returns the symbol for the given entity.
+ * 
+ * @param ent Entity to get the symbol for.
+ * @return The symbol for the entity.
+ */
+char_t symbolGetCharByEntity(const entity_t *ent);
+
+/**
+ * Returns the color for the given entity.
+ * 
+ * @param ent Entity to get the color for.
+ * @return The color for the entity.
+ */
+uint8_t symbolGetColorByEntity(const entity_t *ent);

src/dawn/game/CMakeLists.txt

@@ -0,0 +1,14 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+add_subdirectory(state)
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    time.c
+    game.c
+)

src/dawn/game/game.c

@@ -0,0 +1,94 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "game/game.h"
+#include "game/time.h"
+#include "input.h"
+#include "display/display.h"
+#include "asset/asset.h"
+
+#include "ui/textbox.h"
+#include "ui/testmenu.h"
+#include "ui/mainmenu.h"
+
+#include "game/state/mainmenu.h"
+#include "game/state/mapchange.h"
+#include "game/state/overworld.h"
+#include "game/state/battle.h"
+
+#include "rpg/conversation/conversation.h"
+#include "asset/assetlanguage.h"
+#include "util/memory.h"
+
+game_t GAME;
+
+void gameInit() {
+  memoryInit();
+  memorySet(&GAME, 0, sizeof(game_t));
+
+  timeInit();
+  inputInit();
+  displayInit();
+  assetInit();
+  assetLanguageLoad("en.json");
+
+  textboxInit();
+  testMenuInit();
+  mainMenuInit();
+  conversationInit();
+
+  GAME.state = GAME_STATE_INITIAL;
+}
+
+gameupdateresult_t gameUpdate(const float_t delta) {
+  timeUpdate(delta);
+  inputUpdate();
+
+  switch(GAME.state) {
+    case GAME_STATE_INITIAL:
+      GAME.state = GAME_STATE_MAIN_MENU;
+      break;
+
+    case GAME_STATE_OVERWORLD:
+      gameStateOverworldUpdate();
+      break;
+    
+    case GAME_STATE_PAUSED:
+      if(inputWasPressed(INPUT_BIND_PAUSE)) GAME.state = GAME_STATE_OVERWORLD;
+      break;
+
+    case GAME_STATE_MAP_CHANGE:
+      gameStateMapChangeUpdate();
+      break;
+
+    case GAME_STATE_MAIN_MENU:
+      gameStateMainMenuUpdate();
+      break;
+    
+    case GAME_STATE_BATTLE:
+      gameStateBattleUpdate();
+      break;
+    
+    default:
+      printf("Updating unknown state %d\n", GAME.state);
+  }
+
+  if(inputWasPressed(INPUT_BIND_FORCE_QUIT)) GAME.shouldExit = true;
+
+  // Perform render.
+  displayUpdate();
+
+  if(GAME.shouldExit) return GAME_UPDATE_RESULT_EXIT;
+  return GAME_UPDATE_RESULT_CONTINUE;
+}
+
+void gameDispose() {
+  assetDispose();
+  displayDispose();
+
+  memoryTestZero();
+}

src/dawn/game/game.h

@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "rpg/world/map.h"
+
+typedef enum {
+  GAME_UPDATE_RESULT_CONTINUE = 0,
+  GAME_UPDATE_RESULT_EXIT = 1
+} gameupdateresult_t;
+
+typedef enum {
+  GAME_STATE_INITIAL = 0,
+  GAME_STATE_OVERWORLD = 1,
+  GAME_STATE_PAUSED = 2,
+  GAME_STATE_MAP_CHANGE = 3,
+  GAME_STATE_MAIN_MENU = 4,
+  GAME_STATE_BATTLE = 5
+} gamestate_t;
+
+typedef struct {
+  map_t *currentMap;
+  gamestate_t state;
+  bool_t shouldExit;
+  maplist_t mapNext;
+} game_t;
+
+extern game_t GAME;
+
+/**
+ * Initializes the game state.
+ */
+void gameInit();
+
+/**
+ * Updates the game state.
+ * 
+ * @param delta Time since last update.
+ * @return Game update result, 0 for continue, 1 for exit, else for failure.
+ */
+gameupdateresult_t gameUpdate(const float_t delta);
+
+/**
+ * Cleans up the game state.
+ */
+void gameDispose();

src/dawn/game/state/CMakeLists.txt

@@ -0,0 +1,15 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    battle.c
+    mainmenu.c
+    mapchange.c
+    overworld.c
+)

src/dawn/game/state/battle.c

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "battle.h"
+#include "game/game.h"
+#include "ui/textbox.h"
+#include "rpg/battle/battle.h"
+
+void gameStateBattleUpdate() {
+  battleUpdate();
+  
+  textboxUpdate();
+}

src/dawn/game/state/battle.h

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+
+/**
+ * Updates the battle state.
+ */
+void gameStateBattleUpdate();

src/dawn/game/state/mainmenu.c

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "mainmenu.h"
+#include "ui/mainmenu.h"
+
+void gameStateMainMenuUpdate() {
+  // Update the main menu
+  mainMenuUpdate();
+}

src/dawn/game/state/mainmenu.h

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+/**
+ * Updates the main menu state.
+ */
+void gameStateMainMenuUpdate();

src/dawn/game/state/mapchange.c

@@ -0,0 +1,36 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "mapchange.h"
+#include "asset/assetmap.h"
+#include "game/game.h"
+#include "util/memory.h"
+
+void gameStateMapChangeUpdate() {
+  // First try and find the player object
+  entity_t *player = NULL;
+  player_t oldPlayerData;
+  entitydirection_t dir = ENTITY_DIRECTION_SOUTH;
+  if(GAME.currentMap != NULL) {
+    player = mapEntityGetByType(GAME.currentMap, ENTITY_TYPE_PLAYER);
+    dir = player->direction;
+    oldPlayerData = player->player;
+  }
+
+  assetMapLoad(MAP_LIST_PATHS[GAME.mapNext], &MAP_MAIN);
+  GAME.state = GAME_STATE_OVERWORLD;
+  GAME.currentMap = &MAP_MAIN;
+
+  // Do not reference player since its invalid, just check if it DID exist
+  if(GAME.currentMap != NULL && player != NULL) {
+    player = mapEntityGetByType(GAME.currentMap, ENTITY_TYPE_PLAYER);
+    if(player == NULL) return;
+
+    player->player = oldPlayerData;
+    player->direction = dir;
+  }
+}

src/dawn/game/state/mapchange.h

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+/**
+ * Updates the map change game state.
+ */
+void gameStateMapChangeUpdate();

src/dawn/game/state/overworld.c

@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "overworld.h"
+#include "game/game.h"
+#include "input.h"
+#include "ui/textbox.h"
+#include "ui/testmenu.h"
+#include "rpg/conversation/conversation.h"
+
+void gameStateOverworldUpdate() {
+  textboxUpdate();
+  testMenuUpdate();
+  conversationUpdate();
+
+  if(GAME.currentMap) mapUpdate(GAME.currentMap);
+  if(inputWasPressed(INPUT_BIND_PAUSE)) GAME.state = GAME_STATE_PAUSED;
+}

src/dawn/game/state/overworld.h

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+/**
+ * Updates the overworld game state.
+ */
+void gameStateOverworldUpdate();

src/dawn/game/time.c

@@ -0,0 +1,23 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "game/time.h"
+#include "assert/assert.h"
+
+dawntime_t TIME;
+
+void timeInit() {
+  TIME.delta = 0.0f;
+  TIME.time = 0.0f;
+}
+
+void timeUpdate(const float_t delta) {
+  assertTrue(delta > 0, "time delta must be greater than 0.");
+
+  TIME.delta = delta;
+  TIME.time += delta;
+}

src/dawn/game/time.h

@@ -0,0 +1,28 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+typedef struct {
+  float_t delta;
+  float_t time;
+} dawntime_t;
+
+extern dawntime_t TIME;
+
+/**
+ * Initializes the time system.
+ */
+void timeInit();
+
+/**
+ * Updates the time system.
+ * 
+ * @param delta Time since last update.
+ */
+void timeUpdate(const float_t delta);

src/dawn/input.c

@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "input.h"
+#include "util/memory.h"
+
+input_t INPUT;
+
+void inputInit() {
+  memorySet(&INPUT, 0, sizeof(input_t));
+}
+
+void inputUpdate() {
+  // Update the previous state
+  memoryCopy(
+    INPUT.previousState,
+    INPUT.currentState,
+    sizeof(INPUT.previousState)
+  );
+  
+  // Get the new state
+  for(inputbind_t i = 0; i < INPUT_BIND_COUNT; i++) {
+    INPUT.currentState[i] = inputGetState(i);
+  }
+}
+
+inputstate_t inputIsDown(const inputbind_t bind) {
+  return INPUT.currentState[bind];
+}
+
+inputstate_t inputWasPressed(const inputbind_t bind) {
+  return INPUT.currentState[bind] && !INPUT.previousState[bind];
+}
+
+inputstate_t inputWasReleased(const inputbind_t bind) {
+  return !INPUT.currentState[bind] && INPUT.previousState[bind];
+}

src/dawn/input.h

@@ -0,0 +1,68 @@
+/**
+ * Copyright (c) 2023 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+typedef uint8_t inputbind_t;
+typedef bool_t inputstate_t;
+
+#define INPUT_BIND_UP 0x00
+#define INPUT_BIND_DOWN 0x01
+#define INPUT_BIND_LEFT 0x02
+#define INPUT_BIND_RIGHT 0x03
+#define INPUT_BIND_ACCEPT 0x04
+#define INPUT_BIND_CANCEL 0x05
+#define INPUT_BIND_PAUSE 0x06
+#define INPUT_BIND_FORCE_QUIT 0x07
+
+#define INPUT_BIND_COUNT (INPUT_BIND_FORCE_QUIT + 1)
+
+typedef struct {
+  inputstate_t currentState[INPUT_BIND_COUNT];
+  inputstate_t previousState[INPUT_BIND_COUNT];
+} input_t;
+
+extern input_t INPUT;
+
+/**
+ * Initializes the input system.
+ */
+void inputInit();
+
+/**
+ * Updates the input system.
+ */
+void inputUpdate();
+
+/**
+ * Returns whether or not the given input is down.
+ * 
+ * @param bind The input to check.
+ */
+inputstate_t inputIsDown(const inputbind_t bind);
+
+/**
+ * Returns whether or not the given input was pressed this update tick.
+ * 
+ * @param bind The input to check.
+ */
+inputstate_t inputWasPressed(const inputbind_t bind);
+
+/**
+ * Returns whether or not the given input was released this update tick.
+ * 
+ * @param bind The input to check.
+ */
+inputstate_t inputWasReleased(const inputbind_t bind);
+
+/**
+ * Returns the current state of the given input. Overridden per platform.
+ * 
+ * @param bind The input to check.
+ */
+inputstate_t inputGetState(const inputbind_t bind);

src/dawn/locale/CMakeLists.txt

@@ -0,0 +1,12 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    language.c
+)

src/dawn/locale/language.c

@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "language.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+
+language_t LANGUAGE;
+
+void languageInit() {
+  memorySet(&LANGUAGE, 0, sizeof(language_t));
+}
+
+const char_t * languageGetPointer(const char_t *key) {
+  assertNotNull(key, "Key cannot be NULL.");
+
+  language_t *lang = &LANGUAGE;
+  lang->count;
+
+  int32_t i = 0;
+  while(i < LANGUAGE.count) {
+    if(strcmp(key, LANGUAGE.keys[i]) != 0) {
+      i++;
+      continue;
+    }
+    return LANGUAGE.strings[i];
+  }
+
+  return NULL;
+}
+
+int32_t languageGet(char_t *buffer, const char_t *key) {
+  const char_t *str = languageGetPointer(key);
+  if(str == NULL) return -1;
+  if(buffer == NULL) return strlen(str);
+
+  strcpy(buffer, str);
+  return strlen(str);
+}

src/dawn/locale/language.h

@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+#define LANGUAGE_STRING_COUNT_MAX 128
+#define LANGUAGE_STRING_KEY_LENGTH_MAX 64
+#define LANGUAGE_STRING_LENGTH_MAX 1024
+
+typedef struct {
+  const char_t keys[LANGUAGE_STRING_COUNT_MAX][LANGUAGE_STRING_KEY_LENGTH_MAX];
+  const char_t strings[LANGUAGE_STRING_COUNT_MAX][LANGUAGE_STRING_LENGTH_MAX];
+  int32_t count;
+} language_t;
+
+extern language_t LANGUAGE;
+
+/**
+ * Initializes the language system.
+ */
+void languageInit();
+
+/**
+ * Gets the pointer to the language string for the given key. Pointer should not
+ * be modified or freed.
+ * 
+ * @param key The key to get the string for.
+ * @return The pointer to the string.
+ */
+const char_t * languageGetPointer(const char_t *key);
+
+/**
+ * Returns the language string for the given key.
+ * 
+ * @param buffer The buffer to write the string to, or NULL to get length.
+ * @param key The key to get the string for.
+ * @return The length of the string.
+ */
+int32_t languageGet(char_t *buffer, const char_t *key);

src/dawn/rpg/CMakeLists.txt

@@ -0,0 +1,12 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+add_subdirectory(battle)
+add_subdirectory(conversation)
+add_subdirectory(entity)
+add_subdirectory(world)
+
+# Sources

src/dawn/rpg/battle/CMakeLists.txt

@@ -0,0 +1,12 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    battle.c
+)

src/dawn/rpg/battle/battle.c

@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "assert/assert.h"
+#include "battle.h"
+#include "util/memory.h"
+#include "game/game.h"
+#include "ui/textbox.h"
+
+battle_t BATTLE;
+
+void battleInit() {
+  memorySet(&BATTLE, 0, sizeof(battle_t));
+}
+
+void battleStart() {
+  GAME.state = GAME_STATE_BATTLE;
+  BATTLE.state = BATTLE_STATE_INITIAL;
+
+  textboxSetText(NULL, "battle.start");
+}
+
+void battleUpdate() {
+  switch(BATTLE.state) {
+    case BATTLE_STATE_INITIAL:
+      if(textboxIsOpen()) return;
+      break;
+
+    default:
+      assertUnreachable("Unknown battle state.");
+      break;
+  }
+}

src/dawn/rpg/battle/battle.h

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dawn.h"
+
+typedef enum {
+  BATTLE_STATE_INITIAL
+} battlestate_t;
+
+typedef struct {
+  
+} battlefighter_t;
+
+typedef struct {
+  battlestate_t state;
+} battle_t;
+
+extern battle_t BATTLE;
+
+/**
+ * Initializes the battle system.
+ */
+void battleInit();
+
+/**
+ * Starts a battle.
+ */
+void battleStart(
+
+);
+
+/**
+ * Updates the battle system.
+ */
+void battleUpdate();

src/dawn/rpg/conversation/CMakeLists.txt

@@ -0,0 +1,14 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    conversation.c
+    conversationinteractentity.c
+    conversationinteracttile.c
+)

src/dawn/rpg/conversation/conversation.c

@@ -0,0 +1,85 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "conversation.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+
+conversation_t CONVERSATION;
+
+void conversationInit() {
+  memorySet(&CONVERSATION, 0, sizeof(conversation_t));
+}
+
+void conversationSet(
+  const conversationcallback_t init,
+  const conversationcallback_t update,
+  const conversationdata_t data
+) {
+  CONVERSATION.init = init;
+  CONVERSATION.update = update;
+  CONVERSATION.index = CONVERSATION_NOT_INITIALIZED;
+  CONVERSATION.data = data;
+}
+
+void conversationUpdate() {
+  if(CONVERSATION.init == NULL || CONVERSATION.update == NULL) return;
+
+  uint16_t ret;
+  bool_t recheck = true;
+
+  // Init or update.
+  while(recheck) {
+    switch(CONVERSATION.index) {
+      case CONVERSATION_NOT_INITIALIZED:
+        CONVERSATION.index = 0;
+        ret = CONVERSATION.init(
+          &CONVERSATION, CONVERSATION.index
+        );
+        break;
+      
+      default:
+        ret = CONVERSATION.update(&CONVERSATION, CONVERSATION.index);
+        break;
+    }
+
+
+    // Check ret value and update conversation.
+    switch(ret) {
+      case CONVERSATION_NEXT:
+        CONVERSATION.index++;
+        CONVERSATION.index = CONVERSATION.init(
+          &CONVERSATION, CONVERSATION.index
+        );
+        break;
+      
+      case CONVERSATION_CONTINUE:
+        recheck = false;
+        break;
+      
+      case CONVERSATION_RESTART:
+        CONVERSATION.index = 0;
+        CONVERSATION.init(&CONVERSATION, CONVERSATION.index);
+        break;
+      
+      case CONVERSATION_INVALID:
+        assertUnreachable("Invalid converstaion retval");
+        recheck = false;
+        break;
+
+      case CONVERSATION_DONE:
+        CONVERSATION.init = NULL;
+        CONVERSATION.update = NULL;
+        recheck = false;
+        break;
+      
+      default:
+        CONVERSATION.index = ret;
+        break;
+    }
+  }
+}

src/dawn/rpg/conversation/conversation.h

@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "rpg/entity/entity.h"
+#include "rpg/world/tile.h"
+
+#define CONVERSATION_NEXT ((uint16_t)-1)
+#define CONVERSATION_CONTINUE ((uint16_t)-2)
+#define CONVERSATION_NOT_INITIALIZED ((uint16_t)-3)
+#define CONVERSATION_RESTART CONVERSATION_NOT_INITIALIZED
+#define CONVERSATION_DONE ((uint16_t)-4)
+#define CONVERSATION_INVALID ((uint16_t)-5)
+
+typedef struct _conversation_t conversation_t;
+
+typedef uint16_t (*conversationcallback_t) (
+  conversation_t *convo, const uint16_t
+);
+
+typedef union {
+  struct {
+    entity_t *entity;
+  } entityInteract;
+  
+  struct {
+    tile_t tile;
+  } tileInteract;
+} conversationdata_t;
+
+typedef struct _conversation_t {
+  uint16_t index;
+  conversationcallback_t init;
+  conversationcallback_t update;
+  conversationdata_t data;
+} conversation_t;
+
+extern conversation_t CONVERSATION;
+
+/**
+ * Initializes the conversation object.
+ */
+void conversationInit();
+
+/**
+ * Sets the conversation object.
+ * 
+ * @param init The initialization callback.
+ * @param update The update callback.
+ * @param data The user data.
+ */
+void conversationSet(
+  const conversationcallback_t init,
+  const conversationcallback_t update,
+  const conversationdata_t data
+);
+
+/**
+ * Update a given conversation.
+ */
+void conversationUpdate();

src/dawn/rpg/conversation/conversationinteractentity.c

@@ -0,0 +1,61 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "conversationinteractentity.h"
+#include "assert/assert.h"
+#include "rpg/entity/entity.h"
+#include "locale/language.h"
+#include "ui/textbox.h"
+
+uint16_t conversationInteractEntityInit(
+  conversation_t *convo,
+  const uint16_t i
+) {
+  assertNotNull(convo, "Conversation is NULL!");
+  assertNotNull(convo->data.entityInteract.entity, "Conversation user is NULL!");
+
+  entity_t *e = (entity_t*)convo->data.entityInteract.entity;
+  switch(e->type) {
+    case ENTITY_TYPE_SIGN:
+      textboxSetText("entities.sign.name", e->sign.texts[i]);
+      return i;
+
+    case ENTITY_TYPE_NPC:
+      textboxSetText(e->npc.text.name, e->npc.text.text);
+      return i;
+
+    default:
+      assertUnreachable("Invalid entity type for conversation.");
+      return CONVERSATION_INVALID;
+  }
+}
+
+uint16_t conversationInteractEntityUpdate(
+  conversation_t *convo,
+  const uint16_t i
+) {
+  assertNotNull(convo, "Conversation is NULL!");
+  assertNotNull(convo->data.entityInteract.entity, "Conversation user is NULL!");
+
+  entity_t *e = (entity_t*)convo->data.entityInteract.entity;
+  switch(e->type) {
+    case ENTITY_TYPE_SIGN:
+      if(textboxIsOpen()) return CONVERSATION_CONTINUE;
+      if(i == SIGN_TEXT_COUNT_MAX-1) return CONVERSATION_DONE;
+      if(e->sign.texts[i+1][0] == '\0') return CONVERSATION_DONE;
+      return CONVERSATION_NEXT;
+
+    default:
+      switch(i) {
+        case 0:
+          return textboxIsOpen() ? CONVERSATION_CONTINUE : CONVERSATION_DONE;
+        
+        default:
+          return CONVERSATION_INVALID;
+      }
+  }
+}

src/dawn/rpg/conversation/conversationinteractentity.h

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "conversation.h"
+
+/**
+ * Initializes the conversation object for an entity interaction.
+ * 
+ * @param convo The conversation object to initialize.
+ * @param i The index to initialize the conversation at.
+ * @return The next index to run.
+ */
+uint16_t conversationInteractEntityInit(
+  conversation_t *convo, const uint16_t i
+);
+
+/**
+ * Updates the conversation object for an entity interaction.
+ * 
+ * @param convo The conversation object to update.
+ * @param i The index to update the conversation at.
+ * @return The next index to run.
+ */
+uint16_t conversationInteractEntityUpdate(
+  conversation_t *convo, const uint16_t i
+);

src/dawn/rpg/conversation/conversationinteracttile.c

@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "conversationinteractentity.h"
+#include "assert/assert.h"
+#include "rpg/entity/entity.h"
+#include "locale/language.h"
+#include "ui/textbox.h"
+
+uint16_t conversationInteractTileInit(
+  conversation_t *convo,
+  const uint16_t i
+) {
+  assertNotNull(convo, "Conversation is NULL!");
+  
+  switch(convo->data.tileInteract.tile) {
+    case TILE_WATER:
+      textboxSetText(NULL, "tiles.water.interact");
+      break;
+    
+    case TILE_LAMP:
+      textboxSetText(NULL, "tiles.lamp.interact");
+      break;
+    
+    case TILE_RAIL_SLEEPER:
+    case TILE_RAIL_TRACK:
+      textboxSetText(NULL, "tiles.rail.interact");
+      break;
+
+    default:
+      assertUnreachable("Invalid tile interaction!");
+      return CONVERSATION_INVALID;
+  }
+
+  return 0;
+}
+
+uint16_t conversationInteractTileUpdate(
+  conversation_t *convo,
+  const uint16_t i
+) {
+  switch(i) {
+    case 0:
+      return textboxIsOpen() ? CONVERSATION_CONTINUE : CONVERSATION_DONE;
+    
+    default:
+      return CONVERSATION_INVALID;
+  }
+}

src/dawn/rpg/conversation/conversationinteracttile.h

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "conversation.h"
+
+/**
+ * Initializes the conversation object for a tile interaction.
+ * 
+ * @param convo The conversation object to initialize.
+ * @param i The index to initialize the conversation at.
+ * @return The next index to run.
+ */
+uint16_t conversationInteractTileInit(
+  conversation_t *convo, const uint16_t i
+);
+
+/**
+ * Updates the conversation object for a tile interaction.
+ * 
+ * @param convo The conversation object to update.
+ * @param i The index to update the conversation at.
+ * @return The next index to run.
+ */
+uint16_t conversationInteractTileUpdate(
+  conversation_t *convo, const uint16_t i
+);

src/dawn/rpg/entity/CMakeLists.txt

@@ -0,0 +1,18 @@
+# Copyright (c) 2024 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Subdirs
+
+# Sources
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    entity.c
+    entitydirection.c
+    player.c
+    sign.c
+    interact.c
+    npc.c
+    door.c
+)

src/dawn/rpg/entity/door.c

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "door.h"
+#include "assert/assert.h"
+
+void doorInit(door_t *door) {
+  assertNotNull(door, "Door cannot be NULL.");
+}
+
+void doorDestinationSet(
+  door_t *door,
+  const int32_t x,
+  const int32_t y,
+  const entitydirection_t direction,
+  const maplist_t map
+) {
+  assertNotNull(door, "Door cannot be NULL.");
+  door->x = x;
+  door->y = y;
+  door->direction = direction;
+  door->map = map;
+}

src/dawn/rpg/entity/door.h

@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "entitydirection.h"
+#include "rpg/world/maplist.h"
+
+typedef struct {
+  int32_t x;
+  int32_t y;
+  entitydirection_t direction;
+  maplist_t map;
+} door_t;
+
+/**
+ * Initializes a door.
+ * 
+ * @param door Door to initialize.
+ */
+void doorInit(door_t *door);
+
+/**
+ * Sets the destination of a door.
+ * 
+ * @param door Door to set the destination of.
+ * @param x X coordinate of the destination.
+ * @param y Y coordinate of the destination.
+ * @param direction Direction the player should face when they arrive.
+ * @param map Map the player should arrive in.
+ */
+void doorDestinationSet(
+  door_t *door,
+  const int32_t x,
+  const int32_t y,
+  const entitydirection_t direction,
+  const maplist_t map
+);

src/dawn/rpg/entity/entity.c

@@ -0,0 +1,133 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "entity.h"
+#include "entitydirection.h"
+#include "rpg/world/map.h"
+#include "assert/assert.h"
+#include "game/time.h"
+#include "ui/textbox.h"
+#include "util/memory.h"
+
+void entityInit(
+  entity_t *entity,
+  const entitytype_t type,
+  map_t *map
+) {
+  assertNotNull(entity, "Entity cannot be NULL.");
+  assertNotNull(map, "Map cannot be NULL.");
+
+  memorySet(entity, 0, sizeof(entity_t));
+  entity->type = type;
+  entity->map = map;
+
+  switch(type) {
+    case ENTITY_TYPE_NULL:
+      assertUnreachable("Should not be initializing a NULL entity.");
+      break;
+
+    case ENTITY_TYPE_NPC:
+      npcInit(&entity->npc);
+      break;
+
+    case ENTITY_TYPE_SIGN:
+      signInit(&entity->sign);
+      break;
+
+    case ENTITY_TYPE_DOOR:
+      doorInit(&entity->door);
+      break;
+
+    case ENTITY_TYPE_PLAYER:
+      playerInit(entity);
+      break;
+  }
+}
+
+void entityUpdate(entity_t *entity) {
+  assertNotNull(entity, "Entity cannot be NULL.");
+
+  switch(entity->state) {
+    case ENTITY_STATE_IDLE:
+      switch(entity->type) {
+        case ENTITY_TYPE_NULL:
+          assertUnreachable("Should not be updating a NULL entity.");
+          break;
+
+        case ENTITY_TYPE_PLAYER:
+          playerUpdate(entity);
+          break;
+      }
+      break;
+
+    case ENTITY_STATE_WALKING:
+      entity->walk.time -= TIME.delta;
+      if(entity->walk.time > 0.0f) return;
+      entity->state = ENTITY_STATE_IDLE;
+      break;
+
+    case ENTITY_STATE_TALKING:
+      if(!textboxIsOpen()) entity->state = ENTITY_STATE_IDLE;
+      break;
+
+    default:
+      assertUnreachable("Unknown entity state.");
+  }
+}
+
+void entityWalk(entity_t *entity, const entitydirection_t dir) {
+  assertNotNull(entity, "Entity cannot be NULL.");
+
+  uint16_t newX = entity->x, newY = entity->y;
+  entityDirectionOffsetAdd(dir, &newX, &newY);
+
+  // Update direction, this happens regardless of if the player can move
+  entity->direction = dir;
+
+  // Walking OOB?
+  if(newX >= entity->map->width || newY >= entity->map->height) {
+    return;
+  }
+
+  // Get tile at position
+  tile_t tileAtPosition = mapTileGetByPosition(
+    entity->map,
+    newX,
+    newY,
+    entity->layer
+  );
+  if(tileIsSolid(tileAtPosition)) return;
+
+  // Get entity at position
+  entity_t *entityAtPosition = mapEntityGetByPosition(
+    entity->map,
+    newX,
+    newY
+  );
+  if(entityAtPosition != NULL) return;
+
+  // Commit to move
+  entity->x = newX;
+  entity->y = newY;
+
+  entity->state = ENTITY_STATE_WALKING;
+  entity->walk.time = 0.1f;
+
+  // Check for triggers
+  trigger_t *trigger = mapTriggerGetByPosition(
+    entity->map,
+    entity->x,
+    entity->y
+  );
+  if(trigger != NULL) triggerOnStep(trigger, entity);
+}
+
+void entityPositionSet(entity_t *entity, const uint16_t x, const uint16_t y) {
+  assertNotNull(entity, "Entity cannot be NULL.");
+  entity->x = x;
+  entity->y = y;
+}

src/dawn/rpg/entity/entity.h

@@ -0,0 +1,92 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "player.h"
+#include "sign.h"
+#include "entitydirection.h"
+#include "npc.h"
+#include "door.h"
+
+typedef struct _map_t map_t;
+
+typedef enum {
+  ENTITY_TYPE_NULL = 0,
+  ENTITY_TYPE_PLAYER = 1,
+  ENTITY_TYPE_NPC = 2,
+  ENTITY_TYPE_SIGN = 3,
+  ENTITY_TYPE_DOOR = 4
+} entitytype_t;
+
+typedef enum {
+  ENTITY_STATE_IDLE = 0,
+  ENTITY_STATE_WALKING = 1,
+  ENTITY_STATE_TALKING = 2
+} entitystate_t;
+
+typedef struct {
+  float_t time;
+} entitywalkstate_t;
+
+typedef struct _entity_t {
+  map_t *map;
+  entitytype_t type;
+  uint16_t x;
+  uint16_t y;
+  uint8_t layer;
+  entitydirection_t direction;
+  entitystate_t state;
+
+  // State
+  union {
+    entitywalkstate_t walk;
+  };
+
+  // Type data
+  union {
+    player_t player;
+    npc_t npc;
+    sign_t sign;
+    door_t door;
+  };
+} entity_t;
+
+/**
+ * Initializes an entity.
+ * 
+ * @param entity Entity to initialize.
+ * @param type Type of entity to initialize.
+ */
+void entityInit(
+  entity_t *entity,
+  const entitytype_t type,
+  map_t *map
+);
+
+/**
+ * Updates an entity.
+ * 
+ * @param entity Entity to update.
+ */
+void entityUpdate(entity_t *entity);
+
+/**
+ * Moves an entity.
+ * 
+ * @param entity Entity to move.
+ * @param dir Direction to move.
+ */
+void entityWalk(entity_t *entity, const entitydirection_t dir);
+
+/**
+ * Sets the position of an entity. Performs an immediate move.
+ * 
+ * @param entity Entity to set position of.
+ * @param x X position to set.
+ * @param y Y position to set.
+ */
+void entityPositionSet(entity_t *entity, const uint16_t x, const uint16_t y);

src/dawn/rpg/entity/entitydirection.c

@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) 2024 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "entitydirection.h"
+#include "assert/assert.h"
+
+void entityDirectionOffsetGet(
+  const entitydirection_t dir,
+  uint16_t *x,
+  uint16_t *y
+) {
+  switch(dir) {
+    case ENTITY_DIRECTION_SOUTH:
+      *x = 0;
+      *y = 1;
+      break;
+    case ENTITY_DIRECTION_NORTH:
+      *x = 0;
+      *y = -1;
+      break;
+    case ENTITY_DIRECTION_WEST:
+      *x = -1;
+      *y = 0;
+      break;
+    case ENTITY_DIRECTION_EAST:
+      *x = 1;
+      *y = 0;
+      break;
+    default:
+      assertUnreachable("Invalid entity direction.");
+  }
+}
+
+void entityDirectionOffsetAdd(
+  const entitydirection_t dir,
+  uint16_t *x,
+  uint16_t *y
+) {
+  switch(dir) {
+    case ENTITY_DIRECTION_SOUTH:
+      *y += 1;
+      break;
+    case ENTITY_DIRECTION_NORTH:
+      *y -= 1;
+      break;
+    case ENTITY_DIRECTION_WEST:
+      *x -= 1;
+      break;
+    case ENTITY_DIRECTION_EAST:
+      *x += 1;
+      break;
+    default:
+      assertUnreachable("Invalid entity direction.");
+  }
+}
+
+entitydirection_t entityDirectionLookAt(
+  const uint16_t srcX, const uint16_t srcY,
+  const uint16_t trgX, const uint16_t trgY
+) {
+  if(srcX < trgX) return ENTITY_DIRECTION_EAST;
+  if(srcX > trgX) return ENTITY_DIRECTION_WEST;
+  if(srcY < trgY) return ENTITY_DIRECTION_SOUTH;
+  if(srcY > trgY) return ENTITY_DIRECTION_NORTH;
+  return ENTITY_DIRECTION_SOUTH;
+}