if you want to use them as defines instead then use my.target_angle and so on in the functions instead of calling them like target_angle im not positive but a var might conflict if you have more then one ship in the level unless you declared them in the function then i dont think it would matter. this is just to my understanding of variables and their scope. so using them as defines is probally the best bet so that you can use them in as many functions as you want since it will point to that entitys skill instead of a global var. hope that makes sense