Tiles

src/rpg/world/map.c

@@ -7,6 +7,7 @@
 
 #include "map.h"
 #include "util/memory.h"
+#include "assert/assert.h"
 
 map_t MAP;
 
@@ -126,16 +127,13 @@ void mapChunkLoad(chunk_t* chunk) {
   );
   memoryZero(chunk->tiles, sizeof(tile_t) * CHUNK_TILE_COUNT);
 
-  uint8_t x, y, z;
-  x = 1;
-  y = 2;
-  z = 0;
-  
-  chunk->tiles[
-    (z * CHUNK_WIDTH * CHUNK_HEIGHT) +
-    (y * CHUNK_WIDTH) +
-    x
-  ] = (tile_t){ .id = 1 };
+  // 3x3 test walkable area
+  for(int y = 0; y <= 3; y++) {
+    for(int x = 0; x <= 3; x++) {
+      chunktileindex_t tileIndex = (y * CHUNK_WIDTH) + x;
+      chunk->tiles[tileIndex] = TILE_WALKABLE;
+    }
+  }
 }
 
 chunkindex_t mapGetChunkIndexAt(const chunkpos_t position) {
@@ -160,4 +158,16 @@ chunkindex_t mapGetChunkIndexAt(const chunkpos_t position) {
 chunk_t* mapGetChunk(const uint8_t index) {
   if(index >= MAP_CHUNK_COUNT) return NULL;
   return &MAP.chunks[index];
+}
+
+tile_t mapGetTile(const worldpos_t position) {
+  chunkpos_t chunkPos;
+  worldPosToChunkPos(&position, &chunkPos);
+  chunkindex_t chunkIndex = mapGetChunkIndexAt(chunkPos);
+  if(chunkIndex == -1) return TILE_NULL;
+
+  chunk_t *chunk = mapGetChunk(chunkIndex);
+  assertNotNull(chunk, "Chunk pointer cannot be NULL");
+  chunktileindex_t tileIndex = woprldPosToChunkTileIndex(&position);
+  return chunk->tiles[tileIndex];
 }