You can create behavior tree in editor visually, debug it and enjoy your life. Please read the instruction in the Github wiki. or read this : 1. your parent of BT must have a script 2. your script must not error 3. to create a task or while or priority_condition node your parent script must have function with name start with task_ and accept one and only one argument as control_flow. 4. to success a task you must call succeed() in control_flow 5. to failed a task you must call failed() in con...