draw繪制不出來
代碼看了好幾遍都是一樣的但是就是打印不出來
蔬菜果醬
2016-07-02
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代碼看了好幾遍都是一樣的但是就是打印不出來
2016-07-02
舉報(bào)
2020-04-27
halo.JS
haloObj.prototype.born=function(x,y)
{
for(var i=0;i<this.num;i++)
{
if(!this.alive[i])
{
this.x[i]=x;
this.y[i]=y;
this.r[i]=10;
this.alive[i]=true;
}
}
}
代碼遺落了一個(gè)? ? ? ? “ ！”字符
if(!this.alive[i])? ? ? ? ? ?加上就好了“ ！”字符
2017-01-26
已解決，忘記改成初始化this.alive[i] == true
2017-01-26
var haloObj = function()
{
this.x = [];
this.y = [];
this.alive = [];
this.r = [];
}
haloObj.prototype.num = 5;
haloObj.prototype.init = function()
{
for (var i = 0; i < this.num; i++)
{
this.x[i] = 0;
this.y[i] = 0;
this.alive[i] = false;
this.r[i] = 0;
}
}
haloObj.prototype.draw = function()
{
ctx1.save();
ctx1.lineWidth = 2;
ctx1.shadowBlur = 10;
ctx1.shadowColor = "rgba(123,123,123,1)";
for (var i = 0; i < this.num ;i++)
{
if (this.alive[i])
{
alert("123");
this.r[i] += deltaTime * 0.05;
if (this.r[i] > 100)
{
this.alive[i] = false;
break;
}
var alpha = 1 - this.r[i] / 100;
ctx1.beginPath();
ctx1.arc(this.x[i], this.y[i], this.r[i], 0 , Math.PI *2);
ctx1.closePath();
ctx1.strokeStyle = "rgba(123,123,123,"+ alpha +")";
ctx1.stroke();
}
}
ctx1.restore();
}
haloObj.prototype.born = function(x, y)
{
for (var i = 0; i < this.num; i++)
{
if (this.alive[i])
{
this.x[i] = x;
this.y[i] = y;
this.r[i] = 10;
this.alive[i] = true;?
return;
}
}
}
2016-07-04
這位同學(xué)，能把代碼貼出來看一下嗎？ ?