Added a simple roguelike tileset

src/example_scene.cpp

@@ -27,6 +27,7 @@
 ExampleScene::ExampleScene(lua_State* L) {
 	lua = L;
 
+	//TODO: non-hardcoded source
 	tileSheet.Load(GetRenderer(), "./rsc/terrain.bmp", 32, 32);
 
 	//set the pager's hook

src/libmap/tile_sheet.cpp

@@ -81,7 +81,7 @@ void TileSheet::Free() {
 }
 
 void TileSheet::DrawLayerTo(SDL_Renderer* const renderer, Region* const region, int layer, int camX, int camY, double scaleX, double scaleY) {
-	//TODO: empty
+	//TODO: (2) empty
 }
 
 void TileSheet::DrawRegionTo(SDL_Renderer* const renderer, Region* const region, int camX, int camY, double scaleX, double scaleY) {