Thanks for your feedback. I need to explain something for you sincerely. For the high CPU load caused by my own game engine, I just to say there's huge space for me to improve and I would like to struggle for that. I am sorry for this problem. Secondly, I think it is natural for me to develop such a lack game-play product, as I am a newbie in game development. I would like to think about these problems twice, Thanks for your reply again.
Viewing post in Good Job Tony [Crane Simulation] comments
If your efficiency is this bad, you should focus on optimizing your program's performance before releasing it, instead of putting out a boring, resource-draining piece of crap that wastes everyone's time. These things could easily be lightweight if you used an existing game engine. I really don’t understand how you had the confidence to release this. Are you in such a hurry to prove yourself, like some high schooler? Have you ever actually studied game development? Something like Games101, for example?