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Assets/CoolapeFrame/3rd/NGUI_Enhance/Examples/Scripts/Other/PlayIdleAnimations.cs

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+using UnityEngine;
+using System.Collections.Generic;
+
+/// <summary>
+/// Attach this script to any object that has idle animations.
+/// It's expected that the main idle loop animation is called "idle", and idle
+/// break animations all begin with "idle" (ex: idleStretch, idleYawn, etc).
+/// The script will place the idle loop animation on layer 0, and breaks on layer 1.
+/// </summary>
+
+[AddComponentMenu("NGUI/Examples/Play Idle Animations")]
+public class PlayIdleAnimations : MonoBehaviour
+{
+    Animation mAnim;
+	AnimationClip mIdle;
+	List<AnimationClip> mBreaks = new List<AnimationClip>();
+	float mNextBreak = 0f;
+	int mLastIndex = 0;
+
+	/// <summary>
+	/// Find all idle animations.
+	/// </summary>
+
+	void Start ()
+	{
+		mAnim = GetComponentInChildren<Animation>();
+		
+		if (mAnim == null)
+		{
+			Debug.LogWarning(NGUITools.GetHierarchy(gameObject) + " has no Animation component");
+			Destroy(this);
+		}
+		else
+		{
+			foreach (AnimationState state in mAnim)
+			{
+				if (state.clip.name == "idle")
+				{
+					state.layer = 0;
+					mIdle = state.clip;
+					mAnim.Play(mIdle.name);
+				}
+				else if (state.clip.name.StartsWith("idle"))
+				{
+					state.layer = 1;
+					mBreaks.Add(state.clip);
+				}
+			}
+		
+			// No idle breaks found -- this script is unnecessary
+			if (mBreaks.Count == 0) Destroy(this);
+		}
+	}
+
+	/// <summary>
+	/// If it's time to play a new idle break animation, do so.
+	/// </summary>
+
+	void Update ()
+	{
+		if (mNextBreak < Time.time)
+		{
+			if (mBreaks.Count == 1)
+			{
+				// Only one break animation
+				AnimationClip clip = mBreaks[0];
+				mNextBreak = Time.time + clip.length + Random.Range(5f, 15f);
+				mAnim.CrossFade(clip.name);
+			}
+			else
+			{
+				int index = Random.Range(0, mBreaks.Count - 1);
+				
+				// Never choose the same animation twice in a row
+				if (mLastIndex == index)
+				{
+					++index;
+					if (index >= mBreaks.Count) index = 0;
+				}
+
+				mLastIndex = index;
+				AnimationClip clip = mBreaks[index];
+				mNextBreak = Time.time + clip.length + Random.Range(2f, 8f);
+				mAnim.CrossFade(clip.name);
+			}
+		}
+	}
+}