4-6 Screen Fader 场景切换的渐变效果

夜行的猫仔 · 发表于 2013-9-30 22:28:28

利用GUI纹理实现游戏场景切换时的渐隐效果

C#脚本

using UnityEngine;
using System.Collections;
public class SceneFadeInOut : MonoBehaviour
{
public float fadeSpeed = 1.5f; // 屏幕黑色幕布渐隐的速度.
private bool sceneStarting = true; // 游戏场景是否开始运行.
void Awake ()
{
// 设置纹理大小跟屏幕的大小一致
guiTexture.pixelInset = new Rect(0f, 0f, Screen.width, Screen.height);
}
void Update ()
{
// 如果场景开始了...
if(sceneStarting)
// ... 就运行StartScene().
StartScene();
}
void FadeToClear ()
{
// 这个函数主要是做：从纹理本身的颜色向透明做插值，即逐渐变淡.
guiTexture.color = Color.Lerp(guiTexture.color, Color.clear, fadeSpeed * Time.deltaTime);
}
void FadeToBlack ()
{
//这个函数主要是做：从纹理本身的颜色向黑色做插值，即逐渐变黑.
guiTexture.color = Color.Lerp(guiTexture.color, Color.black, fadeSpeed * Time.deltaTime);
}
void StartScene ()
{
// 执行渐隐函数.
FadeToClear();
// 判断当前的纹理颜色是不是接近透明了...
if(guiTexture.color.a <= 0.05f)
{
// ...如果接近透明就直接将纹理从场景中设为不可用.
guiTexture.color = Color.clear;
guiTexture.enabled = false;
// 设置场景开始标志位为false.
sceneStarting = false;
}
}
public void EndScene ()
{
// 设置纹理可用.
guiTexture.enabled = true;
// 执行从正常逐渐变黑的函数.
FadeToBlack();
// 如果场景已经足够的黑了...
if(guiTexture.color.a >= 0.95f)
//加载下一关的地图场景.
Application.LoadLevel(0);
}
}

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JS脚本

#pragma strict
public var fadeSpeed : float = 1.5f; // Speed that the screen fades to and from black.
private var sceneStarting : boolean = true; // Whether or not the scene is still fading in.
function Awake ()
{
// Set the texture so that it is the the size of the screen and covers it.
guiTexture.pixelInset = new Rect(0f, 0f, Screen.width, Screen.height);
}
function Update ()
{
// If the scene is starting...
if(sceneStarting)
// ... call the StartScene function.
StartScene();
}
function FadeToClear ()
{
// Lerp the colour of the texture between itself and transparent.
guiTexture.color = Color.Lerp(guiTexture.color, Color.clear, fadeSpeed * Time.deltaTime);
}
function FadeToBlack ()
{
// Lerp the colour of the texture between itself and black.
guiTexture.color = Color.Lerp(guiTexture.color, Color.black, fadeSpeed * Time.deltaTime);
}
function StartScene ()
{
// Fade the texture to clear.
FadeToClear();
// If the texture is almost clear...
if(guiTexture.color.a <= 0.05f)
{
// ... set the colour to clear and disable the GUITexture.
guiTexture.color = Color.clear;
guiTexture.enabled = false;
// The scene is no longer starting.
sceneStarting = false;
}
}
public function EndScene ()
{
// Make sure the texture is enabled.
guiTexture.enabled = true;
// Start fading towards black.
FadeToBlack();
// If the screen is almost black...
if(guiTexture.color.a >= 0.95f)
// ... reload the level.
Application.LoadLevel(0);
}

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