62 lines
1.8 KiB
C#
62 lines
1.8 KiB
C#
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using UnityEngine;
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using System.Collections;
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using System;
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namespace BookCurlPro
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{
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public class Tween : MonoBehaviour
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{
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Vector3 from, to;
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float duration;
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Action<Vector3> update;
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Action finish;
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float elapsedtime = 0;
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bool working = false;
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public static Vector3 ValueTo(GameObject obj,
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Vector3 from, Vector3 to, float duration,
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Action<Vector3> update = null, Action finish = null)
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{
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Tween tween = obj.GetComponent<Tween>();
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if (!tween)
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tween = obj.AddComponent<Tween>();
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tween.elapsedtime = 0;
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tween.working = true;
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tween.enabled = true;
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tween.from = from;
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tween.to = to;
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tween.duration = duration;
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tween.update = update;
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tween.finish = finish;
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return Vector3.zero;
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}
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static Vector3 QuadOut(Vector3 start, Vector3 end, float duration, float elapsedTime)
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{
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if (elapsedTime >= duration)
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return end;
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else
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{
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return (elapsedTime / duration) * (elapsedTime / duration - 2) * -(end - start) + start;
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}
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}
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// Update is called once per frame
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void Update()
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{
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if (working)
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{
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elapsedtime += Time.deltaTime;
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Vector3 value = QuadOut(from, to, duration, elapsedtime);
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if (update != null) update(value);
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if (elapsedtime >= duration)
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{
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working = false;
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this.enabled = false;
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if (finish != null)
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{
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finish();
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}
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}
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}
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}
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}
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}
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