From 5256b32055b6a1668cfc3898f60adcf84244f784 Mon Sep 17 00:00:00 2001
From: Dominic Masters <dominic@domsplace.com>
Date: Sun, 6 Oct 2024 17:16:24 -0500
Subject: [PATCH] Textbox rendering back.

---
 CMakeLists.txt                             |  2 +-
 src/dawn/display/draw/CMakeLists.txt       |  1 +
 src/dawn/display/draw/drawstateoverworld.c | 39 +++++++++++++++++++
 src/dawn/display/draw/drawstateoverworld.h | 14 +++++++
 src/dawn/display/draw/drawtext.c           | 10 +++--
 src/dawn/display/draw/drawtext.h           |  2 +
 src/dawn/display/draw/drawui.c             | 39 +++++++++++++++++++
 src/dawn/display/draw/drawui.h             | 11 +++++-
 src/dawn/display/frame.c                   | 43 ++++++++-------------
 src/dawn/display/frame.h                   |  2 -
 src/dawn/rpg/world/map.c                   |  4 +-
 src/dawn/rpg/world/maps/testmap.h          |  4 +-
 src/dawn/ui/textbox.c                      | 45 ++--------------------
 src/dawn/ui/textbox.h                      |  6 ++-
 14 files changed, 140 insertions(+), 82 deletions(-)
 create mode 100644 src/dawn/display/draw/drawstateoverworld.c
 create mode 100644 src/dawn/display/draw/drawstateoverworld.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 86fcff67..eed02b88 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@ set(DAWN_CACHE_TARGET "dawn-target")
 set(DAWN_TARGET_NAME "Dawn")
 
 if(NOT DEFINED DAWN_TARGET)
-  set(DAWN_TARGET linux-x64-terminal CACHE INTERNAL ${DAWN_CACHE_TARGET})
+  set(DAWN_TARGET linux-x64-glfw CACHE INTERNAL ${DAWN_CACHE_TARGET})
 endif()
 
 # Set Common Build Variables
diff --git a/src/dawn/display/draw/CMakeLists.txt b/src/dawn/display/draw/CMakeLists.txt
index 647f6ecc..75dadbec 100644
--- a/src/dawn/display/draw/CMakeLists.txt
+++ b/src/dawn/display/draw/CMakeLists.txt
@@ -8,6 +8,7 @@
 # Sources
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
+    drawstateoverworld.c
     drawmap.c
     drawtext.c
     drawshape.c
diff --git a/src/dawn/display/draw/drawstateoverworld.c b/src/dawn/display/draw/drawstateoverworld.c
new file mode 100644
index 00000000..16280d5c
--- /dev/null
+++ b/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;
+
+  // Try get player
+  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();
+}
\ No newline at end of file
diff --git a/src/dawn/display/draw/drawstateoverworld.h b/src/dawn/display/draw/drawstateoverworld.h
new file mode 100644
index 00000000..8484cc94
--- /dev/null
+++ b/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();
\ No newline at end of file
diff --git a/src/dawn/display/draw/drawtext.c b/src/dawn/display/draw/drawtext.c
index c371c313..1ca53972 100644
--- a/src/dawn/display/draw/drawtext.c
+++ b/src/dawn/display/draw/drawtext.c
@@ -7,20 +7,22 @@
 
 #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
 ) {
-  size_t len = strlen(text);
   if(len == 0) return;
+  size_t rLen = mathMin(len, strlen(text));
   
-  assertTrue(x + len <= FRAME_WIDTH, "Text is too long.");
+  assertTrue(x + rLen <= FRAME_WIDTH, "Text is too long.");
   assertTrue(y < FRAME_HEIGHT, "Text is too low.");
   
   uint16_t i = y * FRAME_WIDTH + x;
-  memcpy(&FRAME_BUFFER[i], text, len);
-  memset(&FRAME_COLOR[i], color, len);
+  memcpy(&FRAME_BUFFER[i], text, rLen);
+  memset(&FRAME_COLOR[i], color, rLen);
 }
\ No newline at end of file
diff --git a/src/dawn/display/draw/drawtext.h b/src/dawn/display/draw/drawtext.h
index ca2a9330..13fd7a90 100644
--- a/src/dawn/display/draw/drawtext.h
+++ b/src/dawn/display/draw/drawtext.h
@@ -12,12 +12,14 @@
  * 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
diff --git a/src/dawn/display/draw/drawui.c b/src/dawn/display/draw/drawui.c
index dd99de20..7ac8f617 100644
--- a/src/dawn/display/draw/drawui.c
+++ b/src/dawn/display/draw/drawui.c
@@ -8,6 +8,9 @@
 #include "drawui.h"
 #include "drawshape.h"
 #include "assert/assert.h"
+#include "ui/textbox.h"
+#include "game/time.h"
+#include "display/draw/drawtext.h"
 
 void drawUIBox(
   const uint16_t x,
@@ -54,3 +57,39 @@ void drawUIBox(
   if(!fill) return;
   drawBox(x + 1, y + 1, width - 2, height - 2, ' ', COLOR_BLACK);
 }
+
+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
+  memset(&FRAME_BUFFER[DRAW_UI_TEXTBOX_CURSOR_POS], ' ', 3);
+  memset(&FRAME_COLOR[DRAW_UI_TEXTBOX_CURSOR_POS], COLOR_WHITE, 3);
+  if(TEXTBOX.textIndex < TEXTBOX.textLength) return;
+  
+  int32_t blink = (int32_t)(TIME.time * TEXTBOX_BLINKS_PER_SECOND) % 2;
+  FRAME_BUFFER[DRAW_UI_TEXTBOX_CURSOR_POS + 1] = blink ? '>' : ' ';
+  FRAME_BUFFER[DRAW_UI_TEXTBOX_CURSOR_POS + 2] = blink ? ' ' : '>';
+}
\ No newline at end of file
diff --git a/src/dawn/display/draw/drawui.h b/src/dawn/display/draw/drawui.h
index 25a9e0c2..d3ce0470 100644
--- a/src/dawn/display/draw/drawui.h
+++ b/src/dawn/display/draw/drawui.h
@@ -8,6 +8,10 @@
 #pragma once
 #include "display/frame.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)
+
 /**
  * Draws a UI box to the frame buffer.
  * 
@@ -25,4 +29,9 @@ void drawUIBox(
   const uint16_t height,
   const uint8_t color,
   const bool_t fill
-);
\ No newline at end of file
+);
+
+/**
+ * Draws the UI textbox to the frame buffer.
+ */
+void drawUITextbox();
\ No newline at end of file
diff --git a/src/dawn/display/frame.c b/src/dawn/display/frame.c
index 6cecf89a..3ec8ba0b 100644
--- a/src/dawn/display/frame.c
+++ b/src/dawn/display/frame.c
@@ -6,15 +6,11 @@
  */
 
 #include "frame.h"
-#include "display/symbol.h"
-#include "rpg/world/map.h"
 #include "game/game.h"
-#include "ui/textbox.h"
 
 #include "display/draw/drawshape.h"
-#include "display/draw/drawui.h"
 #include "display/draw/drawtext.h"
-#include "display/draw/drawmap.h"
+#include "display/draw/drawstateoverworld.h"
 
 char_t FRAME_BUFFER[FRAME_HEIGHT * FRAME_WIDTH];
 uint8_t FRAME_COLOR[FRAME_HEIGHT * FRAME_WIDTH];
@@ -26,27 +22,22 @@ void frameInit() {
 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;
+    
+    default:
+      break;
   }
-
-  map_t *map = GAME.currentMap;
-  if(map == NULL) return;
-
-  // Try get player
-  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
-  );
 }
\ No newline at end of file
diff --git a/src/dawn/display/frame.h b/src/dawn/display/frame.h
index f6879c8c..2bbce9ba 100644
--- a/src/dawn/display/frame.h
+++ b/src/dawn/display/frame.h
@@ -14,8 +14,6 @@
 #define FRAME_WIDTH FRAME_PIXEL_WIDTH/FRAME_CHAR_SIZE
 #define FRAME_HEIGHT FRAME_PIXEL_HEIGHT/FRAME_CHAR_SIZE
 
-#define FRAME_BOTTOM_UI_HEIGHT 8
-
 extern char_t FRAME_BUFFER[FRAME_HEIGHT * FRAME_WIDTH];
 extern uint8_t FRAME_COLOR[FRAME_HEIGHT * FRAME_WIDTH];
 
diff --git a/src/dawn/rpg/world/map.c b/src/dawn/rpg/world/map.c
index 4a587cb4..016a3208 100644
--- a/src/dawn/rpg/world/map.c
+++ b/src/dawn/rpg/world/map.c
@@ -20,7 +20,7 @@ void mapInit(
     "Map width must be greater than 0."
   );
   assertTrue(
-    width < MAP_WIDTH_MAX,
+    width <= MAP_WIDTH_MAX,
     "Map width must be less than or equal to MAP_WIDTH_MAX."
   );
   assertTrue(
@@ -28,7 +28,7 @@ void mapInit(
     "Map height must be greater than 0."
   );
   assertTrue(
-    height < MAP_HEIGHT_MAX,
+    height <= MAP_HEIGHT_MAX,
     "Map height must be less than or equal to MAP_HEIGHT_MAX."
   );
   assertTrue(
diff --git a/src/dawn/rpg/world/maps/testmap.h b/src/dawn/rpg/world/maps/testmap.h
index 98750844..6b0e83e9 100644
--- a/src/dawn/rpg/world/maps/testmap.h
+++ b/src/dawn/rpg/world/maps/testmap.h
@@ -9,8 +9,8 @@
 #include "rpg/world/map.h"
 #include "assert/assert.h"
 
-#define TEST_MAP_WIDTH 16
-#define TEST_MAP_HEIGHT 16
+#define TEST_MAP_WIDTH MAP_WIDTH_MAX
+#define TEST_MAP_HEIGHT MAP_HEIGHT_MAX
 #define TEST_MAP_LAYERS 1
 
 void testMapInit(map_t *map) {
diff --git a/src/dawn/ui/textbox.c b/src/dawn/ui/textbox.c
index d4023d7c..9911c63e 100644
--- a/src/dawn/ui/textbox.c
+++ b/src/dawn/ui/textbox.c
@@ -20,8 +20,6 @@ void textboxSetText(
   const char_t *title,
   const char_t *text
 ) {
-  return;
-
   assertNotNull(text, "Text cannot be NULL.");
 
   // Setup text copies
@@ -32,26 +30,12 @@ void textboxSetText(
 
   // Setup title
   if(title) {
-    len = strlen(title);
-    assertTrue(len < TEXTBOX_TITLE_MAX, "Title is too long.");
+    assertTrue(strlen(title) < TEXTBOX_TITLE_MAX, "Title is too long.");
     strcpy(TEXTBOX.title, title);
   } else {
     TEXTBOX.title[0] = '\0';
   }
 
-  // Add > indicator
-  FRAME_BUFFER[(FRAME_HEIGHT * FRAME_WIDTH) - 4] = ' ';
-  FRAME_BUFFER[(FRAME_HEIGHT * FRAME_WIDTH) - 3] = '>';
-  FRAME_BUFFER[(FRAME_HEIGHT * FRAME_WIDTH) - 2] = ' ';
-
-  // Add title
-  len = strlen(TEXTBOX.title);
-  for(size_t i = 0; i < len; i++) {
-    FRAME_BUFFER[
-      (FRAME_HEIGHT - FRAME_BOTTOM_UI_HEIGHT) * (FRAME_WIDTH) + 2 + i
-    ] = TEXTBOX.title[i];
-  }
-
   // Prepare for scrolling
   TEXTBOX.nextChar = (1.0f / TEXTBOX_CHARS_PER_SECOND);
   TEXTBOX.textIndex = 0;
@@ -63,29 +47,13 @@ bool_t textboxIsOpen() {
 }
 
 void textboxUpdate() {
-  return;
   if(!textboxIsOpen()) return;
 
-  int32_t j;
-
   // Have we finished scrolling?
   if(TEXTBOX.textIndex >= TEXTBOX.textLength) {
     // Wait for input
-    if(inputWasPressed(INPUT_BIND_ACCEPT)) {
-      TEXTBOX.open = false;
-      return;
-    }
-
-    // Blinking cursor
-    j = (int32_t)(TIME.time * TEXTBOX_BLINKS_PER_SECOND) % 2;
-    if(j == 0) {
-      FRAME_BUFFER[(FRAME_HEIGHT * FRAME_WIDTH) - 3] = '>';
-      FRAME_BUFFER[(FRAME_HEIGHT * FRAME_WIDTH) - 2] = ' ';
-    } else {
-      FRAME_BUFFER[(FRAME_HEIGHT * FRAME_WIDTH) - 3] = ' ';
-      FRAME_BUFFER[(FRAME_HEIGHT * FRAME_WIDTH) - 2] = '>';
-    }
-    
+    if(!inputWasPressed(INPUT_BIND_ACCEPT)) return;
+    TEXTBOX.open = false;
     return;
   }
 
@@ -93,13 +61,6 @@ void textboxUpdate() {
   TEXTBOX.nextChar -= TIME.delta;
   if(TEXTBOX.nextChar > 0.0f) return;
   
-  // Scroll text
-  uint16_t x = TEXTBOX.textIndex % (FRAME_WIDTH - 2);
-  uint16_t y = TEXTBOX.textIndex / (FRAME_WIDTH - 2);
-  FRAME_BUFFER[
-    (FRAME_HEIGHT - FRAME_BOTTOM_UI_HEIGHT + 1 + y) *
-    (FRAME_WIDTH) + 1 + x
-  ] = TEXTBOX.text[TEXTBOX.textIndex];
   TEXTBOX.textIndex++;
   TEXTBOX.nextChar = (1.0f / TEXTBOX_CHARS_PER_SECOND);
 }
\ No newline at end of file
diff --git a/src/dawn/ui/textbox.h b/src/dawn/ui/textbox.h
index 6e56d30f..be042e7f 100644
--- a/src/dawn/ui/textbox.h
+++ b/src/dawn/ui/textbox.h
@@ -7,10 +7,12 @@
 
 #pragma once
 #include "dawn.h"
-#include "display/frame.h"
+#include "display/draw/drawui.h"
 
 #define TEXTBOX_TITLE_MAX 16
-#define TEXTBOX_TEXT_MAX ((FRAME_BOTTOM_UI_HEIGHT-2) * (FRAME_WIDTH - 2))
+#define TEXTBOX_TEXT_MAX (\
+  (DRAW_UI_TEXTBOX_HEIGHT - 2) * (DRAW_UI_TEXTBOX_WIDTH - 2) \
+)
 #define TEXTBOX_CHARS_PER_SECOND 25
 #define TEXTBOX_BLINKS_PER_SECOND 2