Java实现一个坦克大战的小游戏【附源码】

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1 前言2 正文

2.1 展示2.2 项目结构2.2 主要代码展示2.3 按钮操作

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var Bullet = function(context,owner,type,dir){
	this.ctx = context;
	this.x = 0;
	this.y = 0;
	this.owner = owner; //子弹的所属者
	this.type = type;//1、玩家  2、敌方
	this.dir = dir;
	this.speed = 3;
	this.size = 6;
	this.hit = false;
	this.isDestroyed = false;
	
	this.draw = function(){
		this.ctx.drawImage(RESOURCE_IMAGE,POS["bullet"][0]+this.dir*this.size,POS["bullet"][1],this.size,this.size,this.x,this.y,this.size,this.size);
		this.move();
	};
	
	this.move = function(){
		if(this.dir == UP){
			this.y -= this.speed;
		}else if(this.dir == DOWN){
			this.y += this.speed;
		}else if(this.dir == RIGHT){
			this.x += this.speed;
		}else if(this.dir == LEFT){
			this.x -= this.speed;
		}
		
		this.isHit();
	};
	
	
	this.isHit = function(){
		if(this.isDestroyed){
			return;
		}
		//临界检测
		if(this.x < map.offsetX){
			this.x = map.offsetX;
			this.hit = true;
		}else if(this.x > map.offsetX + map.mapWidth - this.size){
			this.x = map.offsetX + map.mapWidth - this.size;
			this.hit = true;
		}
		if(this.y < map.offsetY){
			this.y = map.offsetY;
			this.hit = true;
		}else if(this.y > map.offsetY + map.mapHeight - this.size){
			this.y = map.offsetY + map.mapHeight - this.size;
			this.hit = true;
		}
		//子弹是否碰撞了其他子弹
		if(!this.hit){
			if(bulletArray != null && bulletArray.length > 0){
				for(var i=0;i 0){
					for(var i=0;i 1){
								enemyObj.lives --;
							}else{
								enemyObj.distroy();
							}
							this.hit = true;
							break;
						}
					}
				}
			}else if(this.type == BULLET_TYPE_ENEMY){
				if(player1.lives > 0 && CheckIntersect(this,player1,0)){
					if(!player1.isProtected && !player1.isDestroyed){
						player1.distroy();
					}
					this.hit = true;
				}else if(player2.lives > 0 && CheckIntersect(this,player2,0)){
					if(!player2.isProtected && !player2.isDestroyed){
						player2.distroy();
					}
					this.hit = true;
				}
			}
		}
		
		
		if(this.hit){
			this.distroy();
		}
	};
	
	
	this.distroy = function(){
		this.isDestroyed = true;
		crackArray.push(new CrackAnimation(CRACK_TYPE_BULLET,this.ctx,this));
		if(!this.owner.isAI){
			BULLET_DESTROY_AUDIO.play();
		}
	};
	
	
};

var CrackAnimation = function(type,context,crackObj){
	this.times = 0;
	this.ctx = context;
	this.frame = 0;
	this.x = 0;
	this.y = 0;
	this.posName = "";
	this.size = 0;
	this.isOver = false;
	this.tempDir = 1;
	this.owner = crackObj;
	
	if(type == CRACK_TYPE_TANK){
		this.posName = "tankBomb";
		this.size = 66;
		this.frame = 4;
	}else{
		this.posName = "bulletBomb";
		this.size = 32;
		this.frame = 3;
	}
	this.x = crackObj.x + (parseInt(crackObj.size - this.size)/2);
	this.y = crackObj.y + (parseInt(crackObj.size - this.size)/2);
	
	this.draw = function(){
		var gaptime = 3;
		var temp = parseInt(this.times/gaptime);
		this.ctx.drawImage(RESOURCE_IMAGE,POS[this.posName][0]+temp*this.size,POS[this.posName][1],this.size,this.size,this.x,this.y,this.size,this.size);
		this.times += this.tempDir;
		if(this.times > this.frame * gaptime - parseInt(gaptime/2)){
			this.tempDir = -1;
		}
		if(this.times <= 0){
			this.isOver = true;
		}
	};
};

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