(svn r25305) -Fix [FS#5561]: Game Script APIs that execute a DoCommand were returning the same result as in TestMode during world generation

src/script/api/script_object.cpp

@@ -300,7 +300,12 @@ ScriptObject::ActiveInstance::~ActiveInstance()
 
 	if (_generating_world) {
 		IncreaseDoCommandCosts(res.GetCost());
-		if (callback != NULL) callback(GetActiveInstance());
+		if (callback != NULL) {
+			/* Insert return value into to stack and throw a control code that
+			 * the return value in the stack should be used. */
+			callback(GetActiveInstance());
+			throw SQInteger(1);
+		}
 		return true;
 	} else if (_networking) {
 		/* Suspend the script till the command is really executed. */

src/script/squirrel.cpp

@@ -541,15 +541,19 @@ Squirrel::~Squirrel()
 void Squirrel::InsertResult(bool result)
 {
 	sq_pushbool(this->vm, result);
-	vm->GetAt(vm->_stackbase + vm->_suspended_target) = vm->GetUp(-1);
-	vm->Pop();
+	if (this->IsSuspended()) { // Called before resuming a suspended script?
+		vm->GetAt(vm->_stackbase + vm->_suspended_target) = vm->GetUp(-1);
+		vm->Pop();
+	}
 }
 
 void Squirrel::InsertResult(int result)
 {
 	sq_pushinteger(this->vm, result);
-	vm->GetAt(vm->_stackbase + vm->_suspended_target) = vm->GetUp(-1);
-	vm->Pop();
+	if (this->IsSuspended()) { // Called before resuming a suspended script?
+		vm->GetAt(vm->_stackbase + vm->_suspended_target) = vm->GetUp(-1);
+		vm->Pop();
+	}
 }
 
 /* static */ void Squirrel::DecreaseOps(HSQUIRRELVM vm, int ops)