--- a/src/ai/api/ai_object.hpp	Thu Jul 19 17:13:38 2007 +0000
+++ b/src/ai/api/ai_object.hpp	Thu Jul 19 19:42:54 2007 +0000
@@ -29,6 +29,7 @@
 		CommandCost costs;
 		VehicleID new_vehicle_id;
 		SignID new_sign_id;
+		void *event_data;
 	};
 
 	/**
@@ -92,6 +93,11 @@
 	 */
 	static SignID GetNewSignID();
 
+	/**
+	 * Get the pointer to store event data in.
+	 */
+	static void **GetEventPointer();
+
 public:
 	/**
 	 * Store a new_vehicle_id per player.