159 lines
3.2 KiB
C#
159 lines
3.2 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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/// <summary>
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/// Small script that makes it easy to create looping 2D sprite animations.
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/// </summary>
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public class UI2DSpriteAnimation : MonoBehaviour
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{
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/// <summary>
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/// How many frames there are in the animation per second.
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/// </summary>
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[SerializeField] protected int framerate = 20;
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/// <summary>
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/// Should this animation be affected by time scale?
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/// </summary>
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public bool ignoreTimeScale = true;
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/// <summary>
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/// Should this animation be looped?
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/// </summary>
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public bool loop = true;
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/// <summary>
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/// Actual sprites used for the animation.
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/// </summary>
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public UnityEngine.Sprite[] frames;
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UnityEngine.SpriteRenderer mUnitySprite;
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UI2DSprite mNguiSprite;
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int mIndex = 0;
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float mUpdate = 0f;
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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 enabled; } }
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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 framerate; } set { framerate = value; } }
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/// <summary>
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/// Continue playing the animation. If the animation has reached the end, it will restart from beginning
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/// </summary>
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public void Play ()
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{
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if (frames != null && frames.Length > 0)
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{
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if (!enabled && !loop)
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{
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int newIndex = framerate > 0 ? mIndex + 1 : mIndex - 1;
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if (newIndex < 0 || newIndex >= frames.Length)
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mIndex = framerate < 0 ? frames.Length - 1 : 0;
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}
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enabled = true;
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UpdateSprite();
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}
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}
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/// <summary>
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/// Pause the animation.
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/// </summary>
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public void Pause () { enabled = false; }
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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 ResetToBeginning ()
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{
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mIndex = framerate < 0 ? frames.Length - 1 : 0;
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UpdateSprite();
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}
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/// <summary>
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/// Start playing the animation right away.
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/// </summary>
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void Start () { Play(); }
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/// <summary>
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/// Advance the animation as necessary.
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/// </summary>
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void Update ()
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{
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if (frames == null || frames.Length == 0)
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{
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enabled = false;
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}
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else if (framerate != 0)
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{
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float time = ignoreTimeScale ? RealTime.time : Time.time;
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if (mUpdate < time)
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{
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mUpdate = time;
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int newIndex = framerate > 0 ? mIndex + 1 : mIndex - 1;
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if (!loop && (newIndex < 0 || newIndex >= frames.Length))
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{
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enabled = false;
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return;
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}
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mIndex = NGUIMath.RepeatIndex(newIndex, frames.Length);
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UpdateSprite();
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}
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}
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}
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/// <summary>
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/// Immediately update the visible sprite.
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/// </summary>
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void UpdateSprite ()
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{
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if (mUnitySprite == null && mNguiSprite == null)
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{
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mUnitySprite = GetComponent<UnityEngine.SpriteRenderer>();
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mNguiSprite = GetComponent<UI2DSprite>();
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if (mUnitySprite == null && mNguiSprite == null)
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{
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enabled = false;
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return;
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}
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}
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float time = ignoreTimeScale ? RealTime.time : Time.time;
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if (framerate != 0) mUpdate = time + Mathf.Abs(1f / framerate);
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if (mUnitySprite != null)
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{
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mUnitySprite.sprite = frames[mIndex];
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}
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else if (mNguiSprite != null)
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{
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mNguiSprite.nextSprite = frames[mIndex];
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}
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}
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}
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