private void InitWorldTrigger() { var worldTriggerIndex = node.FindChild("WorldTrigger"); if (worldTriggerIndex == -1) { return; } worldTrigger = node.GetChild(worldTriggerIndex) as WorldTrigger; if (worldTrigger == null) { return; } worldTrigger.AddEnterCallback(ObjectEntered); worldTrigger.AddLeaveCallback(ObjectLeaved); }