不循环呀 大神求指点
var fruitobj=function() { this.alive =[];//bool this.x =[]; this.y =[]; this.l =[]; this.spd =[]; this.orange = new Image(); this.blue = new Image(); } fruitobj.prototype.num = 30; fruitobj.prototype.init = function() { for(var i =0; i< this.num; i++) { this.alive[i] = false; this.x[i] = 0; this.y[i] = 0; this.spd[i] = Math.random() * 0.01 + 0.005;//[0.005,0.015) this.born(i); } this.orange.src = "./src/fruit.png"; this.blue.src = "./src/blue.png"; } fruitobj.prototype.draw =function() { for(var i =0; i< this.num; i++) { //draw //find an ane,grow,flyup if(this.alive[i]) { if(this.l[i] <= 14) { this.l[i] += this.spd[i] * deltaTime; } else { this.y[i] -= this.spd[i] * 7 * deltaTime; } ctx2.drawImage(this.orange,this.x[i] - this.l[i] * 0.5,this.y[i] - this.l[i] * 0.5,this.l[i],this.l[i]); if(this.y[i] < 10) { this.alive[i]=false; } } } } fruitobj.prototype.born = function(i) { var aneID = Math.floor(Math.random() * ane.num); this.x[i] = ane.x[aneID]; this.y[i] = canHeight - ane.len[aneID]; this.l[i] = 0; this.alive[i] = true; } function fruitMonitor() { var num =0; for(var i = 0; i < fruit.num; i++) { if(fruit.alive[i]) num++; } if(num < 15) { //send fruit sendFruit(); return; } } function sendFruit() { for(var i = 0; i < fruit.num; i++) { if(!fruit.alive[i]) { fruit.born(i); return; } } }
不循环呀 大神求指点