4回答

• 

  睡觉青蛙

  2016-03-02 12:28:28

  fruitObj.prototype.born = function(i) {

      var aneId = Math.floor(Math.random() * ane.num);

      this.x[i] = ane.x[aneId];

      this.y[i] = canH - ane.len[aneId];

      this.l[i] = 0;

  其实我觉得这里把ane的实例化对象写进去是不妥的。，

      var aneId = Math.floor(Math.random() * ane.num); ane是实例化对象，写在fruitObj对象里是不对的

  
  

  1 0

  java家洼

  你好，你说“ ane是实例化对象，写在fruitObj对象里是不对的”，我觉得你说的不对，因为ane是海葵的实例对象，不是果实的实例对象，在果实类定义中用到其他类的实例对象怎么就不行呢？要是用到自己类的实例对象才不行呢。你说是不是？

  2016-06-23 21:18:41

  共 1 条回复 >

• 

  喵喵咪呀巴拉拉

  2016-01-28 21:44:10

  var fruitObj = function() {
  	this.x = [];
  	this.y = [];
  	this.l = [];
  	this.alive = [];
  	this.speed = [];
  	this.orange = new Image();
  	this.blue = new Image();
  	this.fruitType = [];
  }
  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.l[i] = 0;
   		this.fruitType[i] = '';
   		this.speed[i] = Math.random() * 0.0003 + 0.00001; //[ 0.00001 , 0.00051)
   		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++) {
  		if( this.alive[i]){
  			if( this.fruitType[i] == 'blue' ){
  				var pic = this.blue;
  			}else{
  				var pic = this.orange;
  			}
  			if( this.l[i] <= 14){
  				this.l[i] += this.speed[i] * deltaTime;
  			}else{
  				this.y[i] -= this.speed[i] * deltaTime;
  			}
  			ctx2.drawImage( pic , this.x[i] - this.l[i] , this.y[i] - this.l[i] , 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] = canH - ane.len[aneId];
  	this.l[i] = 0;
  	this.alive[i] = true;
  	var ran = Math.random();
  	if( ran < 0.3 ){
  		this.fruitType[i] = 'blue'
  	}else{
  		this.fruitType[i] = 'orange';
  	}
  }
  fruitObj.prototype.fruitManger = function() {
  	var num = 0;
  	for (var i = 0; i < fruit.num; i++) {
  		if(fruit.alive[i]){
  			num++;
  		}
  	}
  	if( num < 15 ){
  		fruit.rebornFruit();
  		return;
  	}
  }
  fruitObj.prototype.rebornFruit = function() {
  	for (var i = 0; i < fruit.num; i++) {
  		if(!fruit.alive[i]){
  			fruit.born(i);
  			return;
  		}
  	};
  };

  
  

  0 0
• 

  喵喵咪呀巴拉拉

  2016-01-28 21:43:38

  是啊，而且在出生的时候，也给this.l[i]=0了

  var fruitObj = function() {

  this.x = [];

  this.y = [];

  this.l = [];

  this.alive = [];

  this.speed = [];

  this.orange = new Image();

  this.blue = new Image();

  this.fruitType = [];

  }

  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.l[i] = 0;

    this.fruitType[i] = '';

    this.speed[i] = Math.random() * 0.0003 + 0.00001; //[ 0.00001 , 0.00051)

    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++) {

  if( this.alive[i]){

  if( this.fruitType[i] == 'blue' ){

  var pic = this.blue;

  }else{

  var pic = this.orange;

  }

  if( this.l[i] <= 14){

  this.l[i] += this.speed[i] * deltaTime;

  }else{

  this.y[i] -= this.speed[i] * deltaTime;

  }

  ctx2.drawImage( pic , this.x[i] - this.l[i] , this.y[i] - this.l[i] , 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] = canH - ane.len[aneId];

  this.l[i] = 0;

  this.alive[i] = true;

  var ran = Math.random();

  if( ran < 0.3 ){

  this.fruitType[i] = 'blue'

  }else{

  this.fruitType[i] = 'orange';

  }

  }

  fruitObj.prototype.fruitManger = function() {

  var num = 0;

  for (var i = 0; i < fruit.num; i++) {

  if(fruit.alive[i]){

  num++;

  }

  }

  if( num < 15 ){

  fruit.rebornFruit();

  return;

  }

  }

  fruitObj.prototype.rebornFruit = function() {

  for (var i = 0; i < fruit.num; i++) {

  if(!fruit.alive[i]){

  fruit.born(i);

  return;

  }

  };

  };

  
  

  0 0
• 

  误尽此生

  2016-01-28 21:30:49

    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;

             }

  你的代码是这样吗，我这样写的没有问题哦

  
  

  0 0