You can find formats and tools that you can use, but sooner or later you'll realize you need some things that are very custom to your engine and you'll end up writing your own anyway.

你可以找到一些能被利用的格式和工具，但迟早你会认识到，你需要一些专门针对于你自己引擎的东西，于是不得不放弃这些现成的东西而自己另起炉灶。