Test loading asset data.

CMakeLists.txt

@@ -34,9 +34,6 @@ project(Dawn
 # Add tools
 add_subdirectory(tools)
 
-# Add assets
-add_subdirectory(assets)
-
 # Add Libraries
 add_subdirectory(lib)
 

assets/CMakeLists.txt

@@ -1,10 +0,0 @@
-# Copyright (c) 2024 Dominic Masters
-# 
-# This software is released under the MIT License.
-# https://opensource.org/licenses/MIT
-
-tool_copy(
-  testmap
-  ${CMAKE_CURRENT_SOURCE_DIR}/testmap.json
-  testmap.json
-)

assets/testmap.json

@@ -4,10 +4,10 @@
   "layers": [
     {
       "tiles": [
-        1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-        1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-        1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-        1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 2, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 2, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 2, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 2, 1, 1, 1, 1, 1, 1,
         1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
         1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
         1, 1, 1, 1, 1, 1, 1, 1, 1, 1,

src/dawn/CMakeLists.txt

@@ -30,4 +30,6 @@ target_sources(${DAWN_TARGET_NAME}
 )
 
 # Assets
-add_dependencies(${DAWN_TARGET_NAME} dawnassets)
+tool_copy(testmap testmap.json)
+
+add_dependencies(${DAWN_TARGET_NAME} dawnassets)

src/dawn/asset/CMakeLists.txt

@@ -8,4 +8,6 @@ target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     asset.c
     assetarchive.c
+    assetjson.c
+    assetmap.c
 )

src/dawn/asset/asset.c

@@ -93,16 +93,17 @@ size_t assetGetSize() {
 
   size_t n = archive_entry_size(ASSET_ENTRY);
 
-  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);
+  // 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;
 }

src/dawn/asset/assetjson.c

@@ -0,0 +1,551 @@
+/**
+ * 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"
+
+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;
+  do {
+    c = json[offset];
+    if(c == '\0') break;
+    if(c == ' ' || c == '\t' || c == '\n' || c == '\r') {
+      offset++;
+      continue;
+    }
+    assertUnreachable("Unexpected character found after JSON data.");
+  } while(true);
+  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 = malloc(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 = malloc(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 = malloc(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*)malloc(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 = realloc(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 = realloc(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 = malloc(sizeof(assetjson_t));
+
+  obj->type = ASSET_JSON_DATA_TYPE_OBJECT;
+  
+  size_t bufferSize = 2;
+  char_t **keys = malloc(bufferSize * sizeof(char_t*));
+  assetjson_t **values = malloc(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 = realloc(keys, bufferSize * sizeof(char_t*));
+      values = realloc(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 = malloc(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 = malloc(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 = realloc(
+        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 = malloc(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*)malloc(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 = realloc(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 = realloc(buffer, bufferSize * sizeof(char_t));
+    }
+
+    buffer[outOffset] = c;
+    offset++;
+    outOffset++;
+  }
+
+  // Seal the buffer, parse and cleanup
+  buffer[outOffset] = '\0';
+  obj->number = strtod(buffer, NULL);
+  free(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*)malloc(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 = realloc(string, bufferSize);
+      }
+      string[outOffset] = c;
+      offset++;
+      outOffset++;
+      continue;
+    }
+    
+    if(c == '\\') {
+      inEscape = true;
+      offset++;
+      continue;
+    }
+
+    if(c == '"') break;
+
+    if(outOffset >= bufferSize) {
+      bufferSize *= 2;
+      string = realloc(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++) {
+        free(json->object.keys[i]);
+        assetJsonDispose(json->object.values[i]);
+      }
+      free(json->object.keys);
+      free(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]);
+      }
+      free(json->array.value);
+      break;
+    
+    case ASSET_JSON_DATA_TYPE_STRING:
+      free(json->string);
+      break;
+    
+    case ASSET_JSON_DATA_TYPE_NUMBER:
+      break;
+    
+    case ASSET_JSON_DATA_TYPE_BOOLEAN:
+      break;
+    
+    case ASSET_JSON_DATA_TYPE_NULL:
+      break;
+  }
+
+  free(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/assetmap.c

@@ -0,0 +1,102 @@
+/**
+ * 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 "asset/assetjson.h"
+
+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 = malloc(sizeof(char_t) * (length + 1));
+  size_t read = assetRead((uint8_t*)buffer, length);
+  assertTrue(read == length, "assetMapLoad: Failed to read map data!");
+  assetClose();
+
+  // Begin parsing JSON data.
+  assetjson_t *json;
+  read = assetJsonParse(buffer, &json);
+  free(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, 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){
+        .id = (uint16_t)tiles->array.value[j]->number
+      };
+    }
+  }
+
+  // Load entity data
+  assetjson_t *entities = assetJsonGetObjectValue(json, "entities");
+  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 *jsonEntity = entities->array.value[i];
+    assertTrue(
+      jsonEntity->type == ASSET_JSON_DATA_TYPE_OBJECT,
+      "assetMapLoad: Entity is not an object!"
+    );
+
+    int32_t x = (int32_t)assetJsonGetObjectValue(jsonEntity, "x")->number;
+    int32_t y = (int32_t)assetJsonGetObjectValue(jsonEntity, "y")->number;
+    uint8_t type = (uint8_t)assetJsonGetObjectValue(jsonEntity, "type")->number;
+
+    entity_t *ent = mapEntityAdd(map);
+    entityInit(ent, type, map);
+    entityPositionSet(ent, x, y);
+
+    // TODO: Parse any extra data.
+  }
+
+  assetJsonDispose(json);
+}

src/dawn/asset/assetmap.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 "rpg/world/map.h"
+
+void assetMapLoad(
+  const char_t *path,
+  map_t *map
+);

src/dawn/game/game.c

@@ -12,6 +12,7 @@
 #include "rpg/world/maps/testmap.h"
 #include "ui/textbox.h"
 #include "asset/asset.h"
+#include "asset/assetmap.h"
 
 map_t MAP;
 game_t GAME;
@@ -24,8 +25,10 @@ void gameInit() {
   displayInit();
   assetInit();
   textboxInit();
-  
-  testMapInit(&MAP);
+
+  assetMapLoad("testmap.json", &MAP);
+  // testMapInit(&MAP);
+
   gameSetMap(&MAP);
 }
 

tools/copytool/CMakeLists.txt

@@ -3,9 +3,9 @@
 # This software is released under the MIT License.
 # https://opensource.org/licenses/MIT
 
-function(tool_copy target input output)
+function(tool_copy target file)
   add_custom_target(${target}
-    COMMAND ${CMAKE_COMMAND} -E copy ${input} ${output}
+    COMMAND ${CMAKE_COMMAND} -E copy ${DAWN_ASSETS_SOURCE_DIR}/${file} ${DAWN_ASSETS_BUILD_DIR}/${file}
   )
   add_dependencies(dawnassets ${target})
 endfunction()