Address Properties by ID

使用 Hash 代替 string 作为索引

Use non-allocating physics APIs

使用 non-allocating 接口

Transform manipulation

Transform 的改变会引起 OnTransformChanged，合并或者尽量减少修改

Vector and quaternion math and order of operations

由于类型转换的原因，尽量先计算简单的类型

Built-In ColorUtility

使用 Unity 内置的这个颜色转换接口

Find and FindObjectOfType

减少调用

Camera locators

Internally, Unity’s Camera.main property calls Object.FindObjectWithTag, a specialized variant of Object.FindObject. Accessing this property is no more efficient than a call to Object.FindObjectOfType. If code must address the main camera, it is strongly recommended to do one of two things:

Access Camera.main in a Start orOnEnable callback and cache the resulting reference.
Construct a Camera Manager class that can provide or inject a reference to the active camera.

Debug code & the [conditional] attribute

懒人谁会用啊