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标题: 用贴图动画实现火的效果 [打印本页]

作者: 奔跑的小兔 时间: 2012-2-14 14:09
标题: 用贴图动画实现火的效果
贴图动画

一团火焰，跳动，燃烧，希望大家喜欢！
var uvAnimationTileX = 24; //Here you can place the number of columns of your sheet.

//The above sheet has 24

var uvAnimationTileY = 1; //Here you can place the number of rows of your sheet.

//The above sheet has 1

var framesPerSecond = 10.0;
function Update () {

// Calculate index

var index : int = Time.time * framesPerSecond;

// repeat when exhausting all frames

index = index % (uvAnimationTileX * uvAnimationTileY);

// Size of every tile

var size = Vector2 (1.0 / uvAnimationTileX, 1.0 / uvAnimationTileY);

// split into horizontal and vertical index

var uIndex = index % uvAnimationTileX;

var vIndex = index / uvAnimationTileX;

// build offset

// v coordinate is the bottom of the image in opengl so we need to invert.

var offset = Vector2 (uIndex * size.x, 1.0 - size.y - vIndex * size.y);

renderer.material.SetTextureOffset ("_MainTex", offset);

renderer.material.SetTextureScale ("_MainTex", size);

}

转自unity3D8.com

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