Add header guards

scripts/extract_tileset_classes.py

@@ -40,6 +40,10 @@ def enum_string(name):
     return f"{enum_name}_{name.upper()}"
 
 
+# ============================
+header_guard = f"{enum_type.capitalize()}_H"
+print(f"#ifndef {header_guard}")
+print(f"#define {header_guard}")
 script_name = os.path.basename(__file__)
 print(f"// This file was generated by: {script_name}")
 print()
@@ -185,3 +189,5 @@ print()
 
 
 # ============================
+
+print(f"#endif //{header_guard}")