//分值计算

var dataObj = function () 

{

this.fruitNum = 0;

this.double = 1;

this.score = 0;

this.gameOver = false;

this.alpha = 0;

}

dataObj.prototype.draw = function()

{

var w = can1.width;

var h = can1.height;

ctx1.save();

ctx1.shadoBlur = 10;

ctx1.shadowColor = "white";

ctx1.fillStyle = "white";

ctx1.fillText("分数 " + this.score, w * 0.5, h - 20);

if(this.gameOver)

{

this.alpha  += deltaTime * 0.0005;

if(this.alpha > 1)

this.alpha = 1;

ctx1.fillStyle = "rgba(255,255,255," + this.alpha +")";

ctx1.fillText("游戏结束", w * 0.5, h * 0.5);

}

ctx1.restore();

}

dataObj.prototype.addScore = function()

{

this.score += this.fruitNum * 10 * this.double;

this.fruitNum = 0;

this.double = 1;

}