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69 lines
1.6 KiB
69 lines
1.6 KiB
using UnityEngine;
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using System.Collections;
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public class BackgroundController : MonoBehaviour {
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public float transistionSpeed = 1f;
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public float waitTime = 10f;
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public bool forceChange = false;
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private Material mat;
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private float lastTransition = 0.0f;
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private bool inverseDirection = false;
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// Use this for initialization
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void Start () {
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mat = GetComponent<Renderer>().material;
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}
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// Update is called once per frame
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void FixedUpdate () {
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if (Time.time - lastTransition >= waitTime || forceChange) {
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lastTransition = Time.time;
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forceChange = false;
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StartCoroutine(transition(transistionSpeed));
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}
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}
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private IEnumerator transition(float time) {
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float transitionStart = -1;
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float transitionEnd = 1;
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if (inverseDirection) {
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mat.SetFloat("_InvertMap", 1);
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}else {
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mat.SetFloat("_InvertMap", 0);
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}
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float elapsedTime = 0;
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float transitionFrac = transitionStart;
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while ((elapsedTime/ time) <=1) {
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transitionFrac = Mathf.Lerp(transitionStart, transitionEnd, (elapsedTime / time));
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transitionFrac = (inverseDirection)? transitionFrac : -transitionFrac;
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mat.SetFloat("_TimeNode", transitionFrac);
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elapsedTime += Time.deltaTime;
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yield return new WaitForEndOfFrame();
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}
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if (inverseDirection) {
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mat.SetFloat("_TimeNode", 1);
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} else {
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mat.SetFloat("_TimeNode", -1);
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}
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inverseDirection = !inverseDirection;
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}
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}
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