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Assets/CoolapeFrame/3rd/NGUI_Enhance/Scripts/UI/UI2DSpriteAnimation.cs

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+//----------------------------------------------
+//            NGUI: Next-Gen UI kit
+// Copyright © 2011-2015 Tasharen Entertainment
+//----------------------------------------------
+
+using UnityEngine;
+
+/// <summary>
+/// Small script that makes it easy to create looping 2D sprite animations.
+/// </summary>
+
+public class UI2DSpriteAnimation : MonoBehaviour
+{
+	/// <summary>
+	/// How many frames there are in the animation per second.
+	/// </summary>
+
+	[SerializeField] protected int framerate = 20;
+	
+	/// <summary>
+	/// Should this animation be affected by time scale?
+	/// </summary>
+
+	public bool ignoreTimeScale = true;
+
+	/// <summary>
+	/// Should this animation be looped?
+	/// </summary>
+
+	public bool loop = true;
+
+	/// <summary>
+	/// Actual sprites used for the animation.
+	/// </summary>
+
+	public UnityEngine.Sprite[] frames;
+
+	UnityEngine.SpriteRenderer mUnitySprite;
+	UI2DSprite mNguiSprite;
+	int mIndex = 0;
+	float mUpdate = 0f;
+
+	/// <summary>
+	/// Returns is the animation is still playing or not
+	/// </summary>
+
+	public bool isPlaying { get { return enabled; } }
+
+	/// <summary>
+	/// Animation framerate.
+	/// </summary>
+
+	public int framesPerSecond { get { return framerate; } set { framerate = value; } }
+
+	/// <summary>
+	/// Continue playing the animation. If the animation has reached the end, it will restart from beginning
+	/// </summary>
+
+	public void Play ()
+	{
+		if (frames != null && frames.Length > 0)
+		{
+			if (!enabled && !loop)
+			{
+				int newIndex = framerate > 0 ? mIndex + 1 : mIndex - 1;
+				if (newIndex < 0 || newIndex >= frames.Length)
+					mIndex = framerate < 0 ? frames.Length - 1 : 0;
+			}
+			
+			enabled = true;
+			UpdateSprite();
+		}
+	}
+
+	/// <summary>
+	/// Pause the animation.
+	/// </summary>
+
+	public void Pause () { enabled = false; }
+
+	/// <summary>
+	/// Reset the animation to the beginning.
+	/// </summary>
+
+	public void ResetToBeginning ()
+	{
+		mIndex = framerate < 0 ? frames.Length - 1 : 0;
+		UpdateSprite();
+	}
+
+	/// <summary>
+	/// Start playing the animation right away.
+	/// </summary>
+
+	void Start () { Play(); }
+
+	/// <summary>
+	/// Advance the animation as necessary.
+	/// </summary>
+
+	void Update ()
+	{
+		if (frames == null || frames.Length == 0)
+		{
+			enabled = false;
+		}
+		else if (framerate != 0)
+		{
+			float time = ignoreTimeScale ? RealTime.time : Time.time;
+
+			if (mUpdate < time)
+			{
+				mUpdate = time;
+				int newIndex = framerate > 0 ? mIndex + 1 : mIndex - 1;
+
+				if (!loop && (newIndex < 0 || newIndex >= frames.Length))
+				{
+					enabled = false;
+					return;
+				}
+
+				mIndex = NGUIMath.RepeatIndex(newIndex, frames.Length);
+				UpdateSprite();
+			}
+		}
+	}
+
+	/// <summary>
+	/// Immediately update the visible sprite.
+	/// </summary>
+
+	void UpdateSprite ()
+	{
+		if (mUnitySprite == null && mNguiSprite == null)
+		{
+			mUnitySprite = GetComponent<UnityEngine.SpriteRenderer>();
+			mNguiSprite = GetComponent<UI2DSprite>();
+
+			if (mUnitySprite == null && mNguiSprite == null)
+			{
+				enabled = false;
+				return;
+			}
+		}
+
+		float time = ignoreTimeScale ? RealTime.time : Time.time;
+		if (framerate != 0) mUpdate = time + Mathf.Abs(1f / framerate);
+
+		if (mUnitySprite != null)
+		{
+			mUnitySprite.sprite = frames[mIndex];
+		}
+		else if (mNguiSprite != null)
+		{
+			mNguiSprite.nextSprite = frames[mIndex];
+		}
+	}
+}