Prepping for entities in map compiler

tools/mapcompile/mapcompile.py

@@ -67,8 +67,29 @@ if len(layers) == 0:
   print(f"Error: Input file '{inputFile}' does not contain any layers.")
   sys.exit(1)
 
+# Object layer
+objectLayer = None
+for layer in layers:
+  if layer.get('type') == 'objectgroup':
+    objectLayer = layer
+    break
+
+if objectLayer is None:
+  print(f"Error: Input file '{inputFile}' does not contain an object layer.")
+  sys.exit(1)
+
+# Tile Layers
+tileLayers = []
+for layer in layers:
+  if layer.get('type') == 'tilelayer':
+    tileLayers.append(layer)
+
+if len(tileLayers) == 0:
+  print(f"Error: Input file '{inputFile}' does not contain any tile layers.")
+  sys.exit(1)
+
 # First layer
-firstLayer = layers[0]
+firstLayer = tileLayers[0]
 if 'width' not in firstLayer or 'height' not in firstLayer:
   print(f"Error: First layer in '{inputFile}' does not contain 'width' or 'height' key.")
   sys.exit(1)
@@ -112,7 +133,7 @@ for chunkY in range(mapHeightInRealChunks):
     chunkLayers = []
 
     # For each layer...
-    for layerIndex, layer in enumerate(layers):
+    for layerIndex, layer in enumerate(tileLayers):
       foundChunk = None
       if 'chunks' not in layer or not isinstance(layer['chunks'], list):
         print(f"Error: Layer {layerIndex} in '{inputFile}' does not contain 'chunks' key.")