Separate buildings function from main.c

game/map_layers.h

@@ -0,0 +1,18 @@
+#ifndef PIXELDEFENSE_ENUMS_H
+#define PIXELDEFENSE_ENUMS_H
+
+typedef enum Layers {
+    LAYER_TERRAIN = 0,
+    LAYER_FOLIAGE,
+    LAYER_TREES,
+    LAYER_TREES2,
+    LAYER_BUILDINGS,
+    LAYER_BUILDING_OWNER,
+} Layers;
+
+typedef enum ObjectGroup {
+    OBJECTS_GAME = 0,
+    OBJECTS_ENTITIES,
+} ObjectGroup;
+
+#endif //PIXELDEFENSE_ENUMS_H