UrFairy (Your fairy) is a set of useful extensions for development in Unity.

Add following url on Unity Package Manager

• https://git@github.com/beinteractive/UrFairy.git?path=Assets/UrFairy

Extensions for Vector3

• .X() / .Y() / .Z() - One Liner Modification

Extensions for Transform

• .LocalPosition() - One Liner Modification
• .LocalRotation() - One Liner Modification
• .LocalEulerAngles() - One Liner Modification
• .LocalScale() - One Liner Modification
• .Position() - One Liner Modification
• .Rotation() - One Liner Modification
• .EulerAngles() - One Liner Modification
• .Identity() - Reset Transform
• .Children() - Traversing Hierarchy
• .FindDesendant() - Finding Desendant

Extensions for Color

• .R() / .G() / .B() / .A() - One Liner Modification
• .HSV() - Manipulating HSV

Extensions for Material

• .Color() - One Liner Modification
• .Float() - One Liner Modification
• .Keyword() - One Liner Modification

Extensions for Renderer

• .Material() - One Liner Modification
• .Materials() - One Liner Modification

Extensions for int

• .Color() - Hex to Color
• .RandomSign() - Random Sign

Extensions for float

• .RandomSign() - Random Sign

Extensions for MonoBehaviour

• .Delay() - Delay Frames
• .Delay() - Delay Seconds

Extensions for IEnumerable<T>

• .AsEnumerable() - Object to Enumerable
• .CombineFirst() - Appending Object to First
• .CombineLast() - Appending Object to Last
• .Sample() - Picking Random Object
• .Shuffle() - Enumerating in Random Order
• .IsEmpty() - Is Collection Empty
• .Each() - Enumerating Elements
• .EachWithIndex() - Enumerating Elements with Indicies

Extensions for IEnumerable<T> where T : UnityEngine.Object

• .ActiveObjects() - Enumerating Not Destroyed Elements

Extensions for IEnumerable<T> where T : UnityEngine.Component

• .Actives() - Enumerating Not Destroyed Elements

Extensions for List<T>

• .Shuffle() - Shuffling

Extensions for Dictionary<K, V>

• .QueryObject() - Nullsafe Querying

Extensions for Dictionary<K, V> where V : UnityEngine.Object

• .Query() - Nullsafe Querying

Extensions for <T>

• .Tap()
• .IfJust()
• .IfNothing()

Other

• Rnd - PCG Random Number Generator
• Interpolations - Time Based Interpolation Alghorithms

Editor Extensions

• Spacebar Hand Tool
• Capture Screenshot

Returns a new value with modifying a specified component value:

var v = new Vector3(1f, 2f, 3f);
var p = v.X(10f).Y(20f);

// p = Vector3(10f, 20f, 3f)

Relative value version:

var v = new Vector3(1f, 2f, 3f);
var p = v.X(x => x + 10f).Y(y => y + 20f);

// p = Vector3(11f, 22f, 3f)

Set a new value with modifying a current value:

// Set localPosition.x to 10f
g.transform.LocalPosition(p => p.X(10f));

Set a new value with modifying a current value:

// Multiply localRotation and quaternion
g.transform.LocalRotation(r => r * quaternion);

Set a new value with modifying a current value:

// Set localEulerAngles.z to 180f
g.transform.LocalEulerAngles(r => r.Z(180f));

Set a new value with modifying a current value:

// Set localScale.y to 2f
g.transform.LocalScale(s => s.Y(2f));

Set a new value with modifying a current value:

// Set position.x to 10f
g.transform.Position(p => p.X(10f));

Set a new value with modifying a current value:

// Multiply rotation and quaternion
g.transform.Rotation(r => r * quaternion);

Set a new value with modifying a current value:

// Set eulerAngles.z to 180f
g.transform.EulerAngles(r => r.Z(180f));

Set initial values to position, rotation and scale.

g.transform.Identity();

// Same as:
/*
g.transform.localPosition = Vector3.zero;
g.transform.localRotation = Quaternion.identity;
g.transform.localScale = Vector3.one;
*/

Enumerates children (not includes desendants):

foreach (var child in transform.Children())
{
  Debug.Log(child.gameObject.name);
}

Enumerates children (includes desendants):

foreach (var child in transform.Children(true))
{
  Debug.Log(child.gameObject.name);
}

Returns a transform that has a specified name by searching transform hierarchy recursive.

var d = transform.FindDesendant("DesendantName");

Returns a new value with modifying a specified component value:

var c = Color.white;
var v = c.A(0.5f);

// v = Color(1f, 1f, 1f, 0.5f)

Color to HSV:

var hsv = color.HSV();

Modify HSV:

hsv.s = hsv.s - 0.5f;

HSV to Color:

var col = hsv.Color();

Set a new value with modifying existing value (this method is chainable)

m.Color("_Color", c => c.A(0.5f)).Keyword("_ALPHA_BLEND", true);

Set a new value with modifying existing value (this method is chainable)

m.Float("_Alpha", a => a * 0.5f).Keyword("_ALPHA_BLEND", true);

Set a new value with modifying existing value (this method is chainable)

m.Keyword("_ENABLE_GRAYSCALE", b => !b).Float("_TIME_SCALE", 0.5f);

Set a new material with modifying existing material.

r.Material(m => m.Color("_Color", Color.red));

Set a new materials with modifying existing materials.

r.Materials(m => m.Keyword("_GRAYSCALE", true));

Hex value to Color:

var c = 0x112233.Color();

Returns positive or negative value randomly

var v = 100.RandomSign(); // 100 or -100

var v = 100f.RandomSign(); // 100f or -100f

Delay one frame:

// this is MonoBehaviour
this.Delay(() =>
{
  Debug.Log("One frame after");
});

Delay specified frames:

this.Delay(3, () =>
{
  Debug.Log("Three frames after");
});

// this is MonoBehaviour
this.Delay(3.0f, () =>
{
  Debug.Log("Three seconds after");
});

Convert a single object into IEnumerable.

// e is IEnumerable<int>
var e = 100.AsEnumerable();

Insert a specified element to first.

var list = new int[] { 1, 2, 3 };
var n = 10;
list.CombineFirst(n); // 10, 1, 2, 3

Insert a specified element to last.

var list = new int[] { 1, 2, 3 };
var n = 10;
list.CombineLast(n); // 1, 2, 3, 10

// Pick a random element
var e = list.Sample();

var shuffled = list.Shuffle();

// Whether enumerable doesn`t have any element
var b = list.IsEmpty();

Same as each() in Ruby.

list.Each(e =>
{
  Debug.Log(e);
});

Same as each_with_index() in Ruby.

list.EachWithIndex((e, i) =>
{
  Debug.Log($"{i} -> {e}");
});

Enumerates objects that is not null (means has not been destroyed yet)

var activeObjects = objects.ActiveObjects();

Enumerates objects that is not null (means has not been destroyed yet and also related GameObject has not been destroyed)

var actives = components.Actives();

list.Shuffle();

Calls a closure with a object in a dictionary if exists and is not null.

dictionary.QueryObject("Foo", o => Debug.Log(o));

Calls a closure with a object in a dictionary if exists and is not null (means has not been destroyed).

gameObjects.Query("Player", g => Debug.Log(g));

Same as tap() in Ruby.

particle.main.Tap(m => m.startColor = Color.red);

Calls a closure if object is not null.

// Invoke callback if not null
callback.IfJust(f => f());

In .NET 4.6 script backend, it's recommended to use a null conditional operator.

callback?.Invoke();

Calls a closure if object is null.

Resources.Load<GameObject>("Prefab").IfNothing(Debug.Log("Prefab is not found"));

Implementation of PCG Random Number Generation.

// With specified seed
var r = new Rnd(12345U, 678910U);
// Auto seed
var r = new Rnd();

// float
r.Value;
// uint
r.Value32;
// float range
r.Range(0.5f, 1.5f);
// uint range
r.Range(50, 150);

Time based interpolation alghrothims from Klak.

By passing a destination value, a current value, a speed and a delta time, an interpolated new current value will be returned.

// Approaching "to" by exponential algorhithm.
transform.localPosition = Interpolations.Expo(to, transform.localPosition, 30f, Time.deltaTime);

// Approaching "to" by critically damped spring smoothing.
transform.localPosition = Interpolations.CriticallyDamped(to, transform.localPosition, 30f, Time.deltaTime);

Toggle hand tool while pressing a space key in the scene view like Photoshop.

Capture the game view and save png image to project directory by editor menu UrFairy | Capture Screenshot.

Copyright 2016 Oink Games, Inc. and other contributors.

Code licensed under the MIT License: http://opensource.org/licenses/MIT