慕函数6109166
2016-08-17 10:28
鼠标一进入界面 大鱼就想左上角移动,固定在左上角了 求大神指教下
代码如下:
// JavaScript Document
var momObj = function(){ //绘制大鱼
this.x;
this.y;
this.angle;
this.bigEye = new Image();
this.bigBody = new Image();
this.bigTail = new Image();
}
momObj.prototype.init = function()
{
this.x =canWidth * 0.5;
this.y =canHeight * 0.5;
this.angle = 0;
this.bigEye.src="./src/bigEye0.png";
this.bigBody.src="./src/bigSwim0.png";
this.bigTail.src="./src/bigTail0.png";
}
momObj.prototype.draw = function()
{
//lerp x,y
this.x = lerpDistance(mx, this.x, 0.99);
this.y = lerpDistance(my, this.y, 0.99);
//delta angle
//Math.atan2(y,x)
var deltaY = my - this.y;
var deltaX = mx - this.x;
var beta = Math.atan2(deltaY,deltaX);//-PI, PI
//lerp angle
this.angle = lerpAngle(beta, this.angle,0.6);
ctx1.save();
ctx1.translate(this.x,this.y);
ctx1.rotate(this.angle);
ctx1.drawImage(this.bigTail, -this.bigTail.width * 0.5+30 , -this.bigTail.height * 0.5);
ctx1.drawImage(this.bigBody, -this.bigBody.width * 0.5, -this.bigBody.height * 0.5);
ctx1.drawImage(this.bigEye, -this.bigEye.width * 0.5, -this.bigEye.height * 0.5);
ctx1.restore();
}
commonFunction.js在html中引进来了没有?
谢谢 已经好了
HTML5小游戏---爱心鱼(上)
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