把orange改成pic就不出果实了
var fruitObj =function(){
this.alive =[];//bool
this.x=[];
this.y=[];
this.l=[];//定义长度
this.spd=[];//定义速度
this.fruitType=[];
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()*0.017+0.003;//[0.005-0.01)
// this.born(i);
this.fruitType[i]="";
}
this.orange.src="img/fruit.png";
this.blue.src="img/blue.png";
}
fruitObj.prototype.draw=function(){
for (var i=0;i<this.num;i++) {
if(this.alive[i] ){
if(this.fruitType[i] =="blue"){
var pic = this.blue;
}else{
var pic=this.orange;
}
if(this.l[i]<= 14){//判断当果实长到14的时候就停止长
this.l[i] +=this.spd[i]*deltaTime;
}
else{//当果实张成熟了时y坐标就不断的减小,(出现想上漂浮的动作)
this.y[i]-=this.spd[i]*7*deltaTime
}
ctx2.drawImage(this.pic,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;
var ran =Math.random();
if(ran <0.2){
this.fruitType[i]="blue";
}else{
this.fruitType[i]="orange";
}
}
function fruitMontor(){
var num=0;
for (var i =0;i<fruit.num;i++) {
if(fruit.alive[i]) num++;
}
if(num <15){
sendFruit();
return;
}
}
function sendFruit(){
for (var i =0 ;i<fruit.num;i++) {
if(!fruit.alive[i]){
fruit.born(i);
return;
}
}
}
