Made a big mess of the codebase

src/rpg/world/chunk.h

@@ -0,0 +1,84 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "tile.h"
+#include "display/render.h"
+
+#define CHUNK_WIDTH 8
+#define CHUNK_HEIGHT 8
+#define CHUNK_TILE_COUNT (CHUNK_WIDTH * CHUNK_HEIGHT)
+#define CHUNK_ENTITY_COUNT_MAX 8
+
+#define CHUNK_MAP_WIDTH (((RENDER_WIDTH / TILE_WIDTH_HEIGHT)/CHUNK_WIDTH)+2)
+#define CHUNK_MAP_HEIGHT (((RENDER_HEIGHT / TILE_WIDTH_HEIGHT)/CHUNK_HEIGHT)+2)
+#define CHUNK_MAP_COUNT (CHUNK_MAP_WIDTH * CHUNK_MAP_HEIGHT)
+
+typedef struct {
+  uint16_t x, y;
+  tile_t tilesBase[CHUNK_TILE_COUNT];
+  tile_t tilesBaseOverlay[CHUNK_TILE_COUNT];
+  uint32_t entityIDs[CHUNK_ENTITY_COUNT_MAX];
+  uint8_t entityCount;
+} chunk_t;
+
+typedef struct {
+  chunk_t chunks[CHUNK_MAP_COUNT];
+  chunk_t *chunkOrder[CHUNK_MAP_COUNT];
+
+  uint16_t topLeftX;
+  uint16_t topLeftY;
+} chunkmap_t;
+
+extern chunkmap_t CHUNK_MAP;
+
+/**
+ * Initializes the chunk map.
+ */
+void chunkMapInit();
+
+/**
+ * Shifts the chunk map by the specified x and y offsets.
+ * 
+ * @param x The x offset to shift the chunk map.
+ * @param y The y offset to shift the chunk map.
+ */
+void chunkMapShift(const int16_t x, const int16_t y);
+
+/**
+ * Sets the position of the chunk map to the specified coordinates.
+ * 
+ * @param x The x coordinate of the top-left chunk.
+ * @param y The y coordinate of the top-left chunk.
+ */
+void chunkMapSetPosition(const uint16_t x, const uint16_t y);
+
+/**
+ * Gets the chunk at the specified chunk coordinates.
+ * 
+ * @param chunkX The x coordinate of the chunk.
+ * @param chunkY The y coordinate of the chunk.
+ * @return A pointer to the chunk at the specified chunk coordinates, or NULL if
+ *         no chunk exists at those coordinates.
+ */
+chunk_t * chunkGetChunkAt(const uint16_t chunkX, const uint16_t chunkY);
+
+/**
+ * Loads a chunk at the specified coordinates.
+ * 
+ * @param chunk The chunk to load.
+ * @param x The x coordinate of the chunk.
+ * @param y The y coordinate of the chunk.
+ */
+void chunkLoad(chunk_t *chunk, const uint16_t x, const uint16_t y);
+
+/**
+ * Unloads a chunk (that is currently loaded).
+ * 
+ * @param chunk The chunk to unload.
+ */
+void chunkUnload(chunk_t *chunk);