Day 34 complete.

handmade.h

@@ -2,6 +2,7 @@
 #define HANDMADE_H_SENTRY
 
 #include "core.h"
+#include "handmade_tile.h"
 
 /* --------------------------------------------------------------------- */
 /* NOTE: Servcies that the platform layer provides to the game.          */
@@ -136,44 +137,20 @@ void UpdateAndRender(thread_context *Thread, game_memory *Memory,
  *
  */
 
-typedef struct tile_chunk_position {
-    U32 TileChunkX;
-    U32 TileChunkY;
-
-    U32 RelTileX;
-    U32 RelTileY;
-} tile_chunk_position;
-
-typedef struct cannonical_position {
-    U32 AbsTileX;
-    U32 AbsTileY;
-
-    /* NOTE: Tile-relative X and Y. */
-    F32 TileRelX;
-    F32 TileRelY;
-} cannonical_position;
-
-typedef struct tile_chunk {
-    U32 *Tiles;
-} tile_chunk;
+typedef struct memory_arena {
+    U64 Size;
+    U8 *Base;
+    U64 Used;
+} memory_arena;
 
 typedef struct world {
-    U32 ChunkShift;
-    U32 ChunkMask;
-    U32 ChunkDim;
-
-    F32 TileSideInMeters;
-    S32 TileSideInPixels;
-    F32 MetersToPixels;
-
-    S32 TileChunkCountX;
-    S32 TileChunkCountY;
-
-    tile_chunk *TileChunks;
+    tile_map *TileMap;
 } world;
 
 typedef struct game_state {
-    cannonical_position PlayerP;
+    memory_arena WorldArena;
+    world *World;
+    tile_map_position PlayerP;
 } game_state;
 
 #endif