120 lines
2.9 KiB
C#
120 lines
2.9 KiB
C#
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/************************************************************************************
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Copyright : Copyright 2014 Oculus VR, LLC. All Rights reserved.
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Licensed under the Oculus VR Rift SDK License Version 3.3 (the "License");
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you may not use the Oculus VR Rift SDK except in compliance with the License,
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which is provided at the time of installation or download, or which
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otherwise accompanies this software in either electronic or hard copy form.
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You may obtain a copy of the License at
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http://www.oculus.com/licenses/LICENSE-3.3
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Unless required by applicable law or agreed to in writing, the Oculus VR SDK
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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************************************************************************************/
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using UnityEngine;
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using System.Collections; // required for Coroutines
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/// <summary>
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/// Fades the screen from black after a new scene is loaded.
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/// </summary>
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public class OVRScreenFade : MonoBehaviour
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{
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/// <summary>
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/// How long it takes to fade.
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/// </summary>
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public float fadeTime = 2.0f;
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/// <summary>
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/// The initial screen color.
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/// </summary>
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public Color fadeColor = new Color(0.01f, 0.01f, 0.01f, 1.0f);
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private Material fadeMaterial = null;
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private bool isFading = false;
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private YieldInstruction fadeInstruction = new WaitForEndOfFrame();
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/// <summary>
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/// Initialize.
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/// </summary>
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void Awake()
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{
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// create the fade material
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fadeMaterial = new Material(Shader.Find("Oculus/Unlit Transparent Color"));
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}
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/// <summary>
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/// Starts the fade in
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/// </summary>
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void OnEnable()
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{
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StartCoroutine(FadeIn());
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}
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/// <summary>
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/// Starts a fade in when a new level is loaded
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/// </summary>
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void OnLevelWasLoaded(int level)
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{
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StartCoroutine(FadeIn());
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}
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/// <summary>
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/// Cleans up the fade material
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/// </summary>
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void OnDestroy()
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{
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if (fadeMaterial != null)
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{
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Destroy(fadeMaterial);
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}
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}
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/// <summary>
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/// Fades alpha from 1.0 to 0.0
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/// </summary>
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IEnumerator FadeIn()
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{
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float elapsedTime = 0.0f;
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fadeMaterial.color = fadeColor;
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Color color = fadeColor;
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isFading = true;
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while (elapsedTime < fadeTime)
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{
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yield return fadeInstruction;
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elapsedTime += Time.deltaTime;
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color.a = 1.0f - Mathf.Clamp01(elapsedTime / fadeTime);
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fadeMaterial.color = color;
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}
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isFading = false;
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}
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/// <summary>
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/// Renders the fade overlay when attached to a camera object
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/// </summary>
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void OnPostRender()
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{
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if (isFading)
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{
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fadeMaterial.SetPass(0);
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GL.PushMatrix();
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GL.LoadOrtho();
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GL.Color(fadeMaterial.color);
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GL.Begin(GL.QUADS);
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GL.Vertex3(0f, 0f, -12f);
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GL.Vertex3(0f, 1f, -12f);
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GL.Vertex3(1f, 1f, -12f);
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GL.Vertex3(1f, 0f, -12f);
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GL.End();
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GL.PopMatrix();
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}
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}
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}
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