扩展类是一种静态的一种类的调用方法，通过实例化进行调用。
利用this进行指正该类，有参数的时候直接在后面追加参数。
在游戏内可以预定义一些常用的扩展类：
1.Color
public static class ColorExtension
{
public static Color HtmlStringToColor(this string htmlString)
{
Color retColor;
var parseSucceed = ColorUtility.TryParseHtmlString(htmlString, out retColor);
return parseSucceed ? retColor : Color.black;
}
}
2.GameObject
public static class GameObjectExtension
{
public static GameObject SetActiveGracefully(this GameObject selfObj, bool value)
{
if (selfObj.activeSelf != value)
selfObj.SetActive(value);
return selfObj;
}
public static T SetActiveGracefully<T>(this T selfComponent, bool value) where T : Component
{
if (selfComponent.gameObject.activeSelf != value)
selfComponent.gameObject.SetActive(value);
return selfComponent;
}
public static void DestroyGameObj<T>(this T selfBehaviour) where T : Component
{
if (selfBehaviour.gameObject)
Object.Destroy(selfBehaviour.gameObject);
}
public static T DestroyGameObjDelay<T>(this T selfBehaviour, float delay) where T : Component
{
if (selfBehaviour.gameObject)
Object.Destroy(selfBehaviour.gameObject, delay);
return selfBehaviour;
}
public static T EnsureComponent<T>(this GameObject selfObj) where T : Component
{
var comp = selfObj.GetComponent<T>();
return comp ? comp : selfObj.AddComponent<T>();
}
public static Component EnsureComponent(this GameObject selfObj, Type type)
{
var comp = selfObj.GetComponent(type);
return comp ? comp : selfObj.AddComponent(type);
}
}
3.UI
public static class UIExtension
{
public static T ColorAlpha<T>(this T selfGraphic, float alpha) where T : Graphic
{
var color = selfGraphic.color;
color.a = alpha;
selfGraphic.color = color;
return selfGraphic;
}
public static Image FillAmount(this Image selfImage, float fillamount)
{
selfImage.fillAmount = fillamount;
return selfImage;
}
public static void AddOnValueChangedEvent(this Toggle selfToggle, UnityAction<bool> onValueChangedEvent)
{
selfToggle.onValueChanged.AddListener(onValueChangedEvent);
}
public static void AddButtonEvent(this Button btn, UnityAction onClicked)
{
if (btn == null)
{
btn = btn.gameObject.GetComponent<Button>();
}
btn.onClick.AddListener(() => { onClicked(); });
}
public static void AddButtonEvent(this Button btn, UnityAction<GameObject> onClicked)
{
btn.onClick.AddListener(() => { onClicked(btn.gameObject); });
}
}
4.Transform
public static class TransformExtension
{
static Vector3 localPos;
private static Vector3 mScale;
private static Vector3 mPos;
public static T Parent<T>(this T selfComponent, Component parentComponent) where T : Component
{
selfComponent.transform.SetParent(parentComponent == null ? null : parentComponent.transform);
return selfComponent;
}
public static T AsRootTransform<T>(this T selfComponent) where T : Component
{
selfComponent.transform.SetParent(null);
return selfComponent;
}
public static T Identity<T>(this T selfComponent) where T : Component
{
selfComponent.transform.position = Vector3.zero;
selfComponent.transform.rotation = Quaternion.identity;
selfComponent.transform.localScale = Vector3.one;
return selfComponent;
}
public static T LocalIdentity<T>(this T selfComponent) where T : Component
{
selfComponent.transform.localPosition = Vector3.zero;
selfComponent.transform.localRotation = Quaternion.identity;
selfComponent.transform.localScale = Vector3.one;
return selfComponent;
}
public static T LocalPosition<T>(this T selfComponent, Vector3 localPos) where T : Component
{
selfComponent.transform.localPosition = localPos;
return selfComponent;
}
public static T LocalPosition<T>(this T selfComponent, float x, float y, float z) where T : Component
{
selfComponent.transform.localPosition = new Vector3(x, y, z);
return selfComponent;
}
public static T LocalPosition<T>(this T selfComponent, float x, float y) where T : Component
{
localPos = selfComponent.transform.localPosition;
localPos.x = x;
localPos.y = y;
selfComponent.transform.localPosition = localPos;
return selfComponent;
}
public static T LocalPositionX<T>(this T selfComponent, float x) where T : Component
{
localPos = selfComponent.transform.localPosition;
localPos.x = x;
selfComponent.transform.localPosition = localPos;
return selfComponent;
}
public static T LocalPositionY<T>(this T selfComponent, float y) where T : Component
{
localPos = selfComponent.transform.localPosition;
localPos.y = y;
selfComponent.transform.localPosition = localPos;
return selfComponent;
}
public static T LocalPositionZ<T>(this T selfComponent, float z) where T : Component
{
localPos = selfComponent.transform.localPosition;
localPos.z = z;
selfComponent.transform.localPosition = localPos;
return selfComponent;
}
public static T LocalPositionIdentity<T>(this T selfComponent) where T : Component
{
selfComponent.transform.localPosition = Vector3.zero;
return selfComponent;
}
public static Vector3 GetLocalPosition<T>(this T selfComponent) where T : Component
{
return selfComponent.transform.localPosition;
}
public static T LocalRotation<T>(this T selfComponent, Quaternion localRotation) where T : Component
{
selfComponent.transform.localRotation = localRotation;
return selfComponent;
}
public static T LocalRotationIdentity<T>(this T selfComponent) where T : Component
{
selfComponent.transform.localRotation = Quaternion.identity;
return selfComponent;
}
public static Quaternion GetLocalRotation<T>(this T selfComponent) where T : Component
{
return selfComponent.transform.localRotation;
}
public static T LocalScale<T>(this T selfComponent, Vector3 scale) where T : Component
{
selfComponent.transform.localScale = scale;
return selfComponent;
}
public static T LocalScale<T>(this T selfComponent, float xyz) where T : Component
{
selfComponent.transform.localScale = Vector3.one * xyz;
return selfComponent;
}
public static T LocalScale<T>(this T selfComponent, float x, float y, float z) where T : Component
{
mScale = selfComponent.transform.localScale;
mScale.x = x;
mScale.y = y;
mScale.z = z;
selfComponent.transform.localScale = mScale;
return selfComponent;
}
public static T LocalScale<T>(this T selfComponent, float x, float y) where T : Component
{
mScale = selfComponent.transform.localScale;
mScale.x = x;
mScale.y = y;
selfComponent.transform.localScale = mScale;
return selfComponent;
}
public static T LocalScaleX<T>(this T selfComponent, float x) where T : Component
{
mScale = selfComponent.transform.localScale;
mScale.x = x;
selfComponent.transform.localScale = mScale;
return selfComponent;
}
public static T LocalScaleY<T>(this T selfComponent, float y) where T : Component
{
mScale = selfComponent.transform.localScale;
mScale.y = y;
selfComponent.transform.localScale = mScale;
return selfComponent;
}
public static T LocalScaleZ<T>(this T selfComponent, float z) where T : Component
{
mScale = selfComponent.transform.localScale;
mScale.z = z;
selfComponent.transform.localScale = mScale;
return selfComponent;
}
public static T LocalScaleIdentity<T>(this T selfComponent) where T : Component
{
selfComponent.transform.localScale = Vector3.one;
return selfComponent;
}
public static Vector3 GetLocalScale<T>(this T selfComponent) where T : Component
{
return selfComponent.transform.localScale;
}
public static T Position<T>(this T selfComponent, Vector3 position) where T : Component
{
selfComponent.transform.position = position;
return selfComponent;
}
public static T Position<T>(this T selfComponent, float x, float y, float z) where T : Component
{
selfComponent.transform.position = new Vector3(x, y, z);
return selfComponent;
}
public static T Position<T>(this T selfComponent, float x, float y) where T : Component
{
mPos = selfComponent.transform.position;
mPos.x = x;
mPos.y = y;
selfComponent.transform.position = mPos;
return selfComponent;
}
public static T PositionX<T>(this T selfComponent, float x) where T : Component
{
mPos = selfComponent.transform.position;
mPos.x = x;
selfComponent.transform.position = mPos;
return selfComponent;
}
public static T PositionX<T>(this T selfComponent, Func<float, float> xSetter) where T : Component
{
mPos = selfComponent.transform.position;
mPos.x = xSetter(mPos.x);
selfComponent.transform.position = mPos;
return selfComponent;
}
public static T PositionY<T>(this T selfComponent, float y) where T : Component
{
mPos = selfComponent.transform.position;
mPos.y = y;
selfComponent.transform.position = mPos;
return selfComponent;
}
public static T PositionY<T>(this T selfComponent, Func<float, float> ySetter) where T : Component
{
mPos = selfComponent.transform.position;
mPos.y = ySetter(mPos.y);
selfComponent.transform.position = mPos;
return selfComponent;
}
public static T PositionZ<T>(this T selfComponent, float z) where T : Component
{
mPos = selfComponent.transform.position;
mPos.z = z;
selfComponent.transform.position = mPos;
return selfComponent;
}
public static T PositionZ<T>(this T selfComponent, Func<float, float> zSetter) where T : Component
{
mPos = selfComponent.transform.position;
mPos.z = zSetter(mPos.z);
selfComponent.transform.position = mPos;
return selfComponent;
}
public static T PositionIdentity<T>(this T selfComponent) where T : Component
{
selfComponent.transform.position = Vector3.zero;
return selfComponent;
}
public static Vector3 GetPosition<T>(this T selfComponent) where T : Component
{
return selfComponent.transform.position;
}
public static T Rotation<T>(this T selfComponent, Quaternion rotation) where T : Component
{
selfComponent.transform.rotation = rotation;
return selfComponent;
}
public static T RotationIdentity<T>(this T selfComponent) where T : Component
{
selfComponent.transform.rotation = Quaternion.identity;
return selfComponent;
}
public static Quaternion GetRotation<T>(this T selfComponent) where T : Component
{
return selfComponent.transform.rotation;
}
public static Vector3 GetGlobalScale<T>(this T selfComponent) where T : Component
{
return selfComponent.transform.lossyScale;
}
public static Vector3 GetScale<T>(this T selfComponent) where T : Component
{
return selfComponent.transform.lossyScale;
}
public static Vector3 GetWorldScale<T>(this T selfComponent) where T : Component
{
return selfComponent.transform.lossyScale;
}
public static Vector3 GetLossyScale<T>(this T selfComponent) where T : Component
{
return selfComponent.transform.lossyScale;
}
public static T AsLastSibling<T>(this T selfComponent) where T : Component
{
selfComponent.transform.SetAsLastSibling();
return selfComponent;
}
public static T AsFirstSibling<T>(this T selfComponent) where T : Component
{
selfComponent.transform.SetAsFirstSibling();
return selfComponent;
}
public static T SiblingIndex<T>(this T selfComponent, int index) where T : Component
{
selfComponent.transform.SetSiblingIndex(index);
return selfComponent;
}
public static Transform FindChildRecursion(this Transform tfParent, string name, StringComparison stringComparison = StringComparison.Ordinal)
{
if (tfParent.name.Equals(name, stringComparison))
{
return tfParent;
}
foreach (Transform tfChild in tfParent)
{
Transform tfFinal = null;
tfFinal = tfChild.FindChildRecursion(name, stringComparison);
if (tfFinal)
{
return tfFinal;
}
}
return null;
}
public static Transform FindChildRecursion(this Transform tfParent, Func<Transform, bool> predicate)
{
if (predicate(tfParent))
{
return tfParent;
}
foreach (Transform tfChild in tfParent)
{
Transform tfFinal = null;
tfFinal = tfChild.FindChildRecursion(predicate);
if (tfFinal)
{
return tfFinal;
}
}
return null;
}
public static string GetPath(this Transform transform)
{
var sb = new System.Text.StringBuilder();
var t = transform;
while (true)
{
sb.Insert(0, t.name);
t = t.parent;
if (t)
{
sb.Insert(0, "/");
}
else
{
return sb.ToString();
}
}
}
}
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