149 lines
3.5 KiB
C#
149 lines
3.5 KiB
C#
//----------------------------------------------
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// NGUI: Next-Gen UI kit
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// Copyright © 2011-2015 Tasharen Entertainment
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//----------------------------------------------
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using UnityEngine;
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using System.Collections.Generic;
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/// <summary>
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/// Very simple sprite animation. Attach to a sprite and specify a common prefix such as "idle" and it will cycle through them.
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/// </summary>
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[ExecuteInEditMode]
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[RequireComponent(typeof(UISprite))]
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[AddComponentMenu("NGUI/UI/Sprite Animation")]
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public class UISpriteAnimation : MonoBehaviour
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{
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[HideInInspector][SerializeField] protected int mFPS = 30;
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[HideInInspector][SerializeField] protected string mPrefix = "";
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[HideInInspector][SerializeField] protected bool mLoop = true;
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[HideInInspector][SerializeField] protected bool mSnap = true;
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protected UISprite mSprite;
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protected float mDelta = 0f;
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protected int mIndex = 0;
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protected bool mActive = true;
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protected List<string> mSpriteNames = new List<string>();
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/// <summary>
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/// Number of frames in the animation.
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/// </summary>
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public int frames { get { return mSpriteNames.Count; } }
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/// <summary>
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/// Animation framerate.
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/// </summary>
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public int framesPerSecond { get { return mFPS; } set { mFPS = value; } }
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/// <summary>
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/// Set the name prefix used to filter sprites from the atlas.
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/// </summary>
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public string namePrefix { get { return mPrefix; } set { if (mPrefix != value) { mPrefix = value; RebuildSpriteList(); } } }
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/// <summary>
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/// Set the animation to be looping or not
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/// </summary>
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public bool loop { get { return mLoop; } set { mLoop = value; } }
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/// <summary>
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/// Returns is the animation is still playing or not
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/// </summary>
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public bool isPlaying { get { return mActive; } }
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/// <summary>
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/// Rebuild the sprite list first thing.
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/// </summary>
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protected virtual void Start () { RebuildSpriteList(); }
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/// <summary>
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/// Advance the sprite animation process.
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/// </summary>
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protected virtual void Update ()
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{
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if (mActive && mSpriteNames.Count > 1 && Application.isPlaying && mFPS > 0)
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{
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mDelta += RealTime.deltaTime;
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float rate = 1f / mFPS;
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if (rate < mDelta)
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{
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mDelta = (rate > 0f) ? mDelta - rate : 0f;
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if (++mIndex >= mSpriteNames.Count)
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{
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mIndex = 0;
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mActive = mLoop;
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}
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if (mActive)
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{
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mSprite.spriteName = mSpriteNames[mIndex];
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if (mSnap) mSprite.MakePixelPerfect();
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}
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}
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}
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}
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/// <summary>
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/// Rebuild the sprite list after changing the sprite name.
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/// </summary>
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public void RebuildSpriteList ()
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{
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if (mSprite == null) mSprite = GetComponent<UISprite>();
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mSpriteNames.Clear();
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if (mSprite != null && mSprite.atlas != null)
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{
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List<UISpriteData> sprites = mSprite.atlas.spriteList;
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for (int i = 0, imax = sprites.Count; i < imax; ++i)
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{
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UISpriteData sprite = sprites[i];
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if (string.IsNullOrEmpty(mPrefix) || sprite.name.StartsWith(mPrefix))
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{
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mSpriteNames.Add(sprite.name);
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}
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}
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mSpriteNames.Sort();
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}
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}
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/// <summary>
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/// Reset the animation to the beginning.
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/// </summary>
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public void Play () { mActive = true; }
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/// <summary>
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/// Pause the animation.
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/// </summary>
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public void Pause () { mActive = false; }
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/// <summary>
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/// Reset the animation to frame 0 and activate it.
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/// </summary>
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public void ResetToBeginning ()
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{
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mActive = true;
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mIndex = 0;
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if (mSprite != null && mSpriteNames.Count > 0)
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{
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mSprite.spriteName = mSpriteNames[mIndex];
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if (mSnap) mSprite.MakePixelPerfect();
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}
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}
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}
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