别用 Enum，尽管会让你的代码更好看

别听标题的，你得用 Enum。但是你要注意以下所有的问题：

尽可能不要把 Enum 转成其他类型用

相关 Feedback: https://feedback.vrchat.com/udon/p/converting-enum-to-int-in-datatoken-parameter-errors-at-runtime

// Cannot retrieve heap variable of type 'Int32' as type 'DataToken'
DataList dataList = new DataList();
AnEnum anEnumState = AnEnum.AState;
dataList.Add((int)anEnumState);

// Cannot retrieve heap variable of type 'Int32' as type 'byte'
Foo(EnumType e) {
  byte bar = 0;
  bar += (byte)e;
}

不要在可选方法参数使用 Enum

Feedback: https://feedback.vrchat.com/udon/p/udonsharp-enum-as-optional-argument-causes-compile-errors

enum AnEnum {
    Option,
    AnotherOption
}

public class Test : UdonSharpBehaviour
{
    void OptionalEnum(AnEnum anEnum = AnEnum.Option) // Compile Error
    {
        
    }
}

不要对着非用户定义 Enum 做比较（==）操作

Feedback: https://feedback.vrchat.com/udon/p/checking-a-system-defined-enum-with-equality-operators-fails

public override void OnInputMethodChanged(VRCInputMethod inputMethod)  
{  
    if (inputMethod == VRCInputMethod.Touch)  
    {  
        // Run code for touch input  
    }  
    else  
    {  
        // Run code for non-touch input  
    }  
}

当然也有 Workaround

if ((int)inputMethod == (int)VRCInputMethod.Touch)