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