diff -r cacf2f05f79b -r 283d23931bb4 src/ai/api/ai_sign.hpp
--- a/src/ai/api/ai_sign.hpp	Sun Mar 25 13:32:14 2007 +0000
+++ b/src/ai/api/ai_sign.hpp	Sun Mar 25 13:50:19 2007 +0000
@@ -72,6 +72,11 @@
 };
 
 #ifdef DEFINE_SQUIRREL_CLASS
+namespace SQConvert {
+	/* Allow AISign to be used as Squirrel parameter */
+	template <> AISign *GetParam(ForceType<AISign *>, HSQUIRRELVM vm, int index) { SQUserPointer instance; sq_getinstanceup(vm, index, &instance, 0); return (AISign *)instance; }
+}; // namespace SQConvert
+
 void SQAISignRegister(Squirrel *engine) {
 	DefSQClass <AISign> SQAISign("AISign");
 	SQAISign.PreRegister(engine);