EnumFlags

Attribute Use

The use of this attribute bypasses the need to use [System.Flags] attribute during the declaration of the Enumeration as long as the values within the Enumerations are set up correctly with 2^nth power. It also changes the Enumeration drop down within the inspector and allows for multiple selections to be chosen at the same time.

Example Code:

public enum TestFlag
{
    Test1 = 1,
    Test2 = 2,
    Test3 = 4,
    Test4 = 8
}

[EnumFlags]
public TestFlag flag;

Inspector Display:

public class EnumFlags<T>

Description:

Collection of static functions that allow for the simple implementation and checking of enumeration flags.

Visibility	Return Type	Method / Function	Description
public	bool	HasFlag(T valueToCheck ,T flagToCheck)	Checks to see if the value to check is contained within the flag.
public	bool	HasAllFlags(T valueToCheck, params T[] flagsToCheck)	Checks to see if the value to check contains all of the flags
private	bool	CheckIfEnum()	Checks the current type T is an Enumeration.

The use of flags within Unity can be done through the use of the [EnumFlags] Attribute found here.

//ExampleCode

public enum TestFlagEnum
{
    Test1 = 1,
    Test2 = 2,
    Test3 = 4
}

[EnumFlags]
[SerializedField]
private TestFlagEnum flagToCheck = TestFlagEnum.Test1 | TestFlagEnum.Test2 | TestFlagEnum.Test3;


void Start()
{
    Debug.Log("Does flagToCheck contain the Flag? " + 
        FlagsEnum<TestFlagEnum>.HasFlag(TestFlagEnum.Test1,flagToCheck));
    //Will return 'Does flagToCheck contain the Flag? true

    TestFlagEnum test2 = TestFlagEnum.test2;
     Debug.Log("Does flagToCheck contain the Flag? " + 
         FlagsEnum<TestFlagEnum>.HasFlag(test2, flagToCheck));
    //Will return 'Does flagToCheck contain the Flag? true
}