var?fruitObj=function(){
????this.alive=[];
????this.x=[];
????this.y=[];
????this.l=[];
????this.spd=[];
????this.orange=new?Image();
????this.blue=new?Image();
}
fruitObj.prototype.num=30;//bool
fruitObj.prototype.init=function(){
????for(var?i=0;i<this.num;i++)
????{
????????this.alive[i]=true;
????????this.x[i]=0;
????????this.y[i]=0;
????????this.spd[i]=Math.random()*0.01+0.005;
????????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,fly?up
????????if(this.alive[i]){
????????????if(this.l[i]<=14)
????????????{
????????????????this.l[i]+=this.spd[i]*deltaTime;
????????????}
????????????else
????????????{
????????????????this.l[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;
}
2016-03-09
fruitObj.prototype.draw=function(){ ????for?(var?i=0;i<this.num;i++){ ????????//draw ????????//find?an?ane,grow,fly?up ????????if(this.alive[i]){//as?alive?before ????????????if(this.l[i]<=14) ????????????{ ????????????????this.l[i]+=this.spd[i]*deltaTime; ????????????} ????????????else ????????????{ ????????????????this.l[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;//as?alive?before ????????????} ????????} ????} }2017-05-20
想問下果實為什么出不來，請問是怎么解決的
2016-11-30
我也是怎么，請問是怎么解決的
2016-04-12
/**
* Created by lina.zheng on 2016/4/12.
*/
var fruitObj=function () {
? ?this.alive=[]
? ?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=true;
? ? ? ?this.x[i]=0;
? ? ? ?this.y[i]=0;
? ? ? ?this.l[i]=0;
? ? ? ?this.spd[i]=Math.random()*0.01+0.005;//從0.005-0.015
? ? ? ?this.bron(i);//所有果實出身
? ?}
? ?this.orange.src="./src/fruit.png"
? ?this.orange.src="./src/blue.png"
}
fruitObj.prototype.draw=function () {
? ?for(var i=0;i<this.num;i++) {
? ? ? ?//畫果實
? ? ? ?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;
? ? ? ? ? ?}
? ? ? ?}
? ?}
? ?}
//隨機尋找?？?br />fruitObj.prototype.bron=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;
}
// fruitObj.prototype.update=function () {
// ? ? var num=0;
// ? ? for(var i=0;i<this.num;i++){
// ? ? ? ? if (this.alive[i])num++;
// ? ? }
// }
可以看出我哪邊錯了么?? 我找了好久? ?if (this.alive[i]) {}這個一加進去就泡泡就出不來了
2016-03-09
先打印一下this.l[i]和deltaTime結果是否是正確的