第8讲 创建子弹 弄成预制资源 prefab

新建一个sprite，做成子弹。bullet

再新建一个js

sprite bullet上面添加这个js  这个子弹就会移动了。向上移动。

拖到资源管理器  子弹变成了预制体prefat

画布的sprite可以删除了。

在我的game js里面 添加 预制体 子弹。

设置生成子弹。

cc.Class({
    extends: cc.Component,

    properties: {
       bg1:cc.Node,
       bg2:cc.Node,
       play_node:cc.Node,
       btn_pause_node:cc.Node,
       pause_jiemian_node:cc.Node,
       hero:cc.Node,
       pre_bullet:cc.Prefab
    },
    onLoad() {
        cc.log("wx:xiaomao0055");
        cc.log("qq:14496453");
        this.bg1.y=0;
        this.bg2.y  =  this.bg1.y+this.bg1.height;
        this.isBgMove = false;
        this.bg_speed = 5;
        this.set_touch();
        this.play_node.active= true;
        this.btn_pause_node.active = false;
        this.pause_jiemian_node.active = false;

        this.hero.x=0;
        this.hero.y=-500;
    },
    set_touch(){
        this.node.on('touchstart',function(event){
            cc.log("touchstart");
            this.isBgMove = true;
            this.play_node.active = false;
            this.btn_pause_node.active=true;
        },this);
        this.node.on('touchmove',function(event){
            if(this.isBgMove)
                var pos_hero =this.hero.getPosition();
                var pos_move = event.getDelta();
                this.hero.setPosition(cc.v2(pos_hero.x+pos_move.x,pos_hero.y+pos_move.y));

        },this);
        this.node.on('touchend',function(event){

            var bullet = cc.instantiate(this.pre_bullet);
            bullet.parent = this.node;
            var pos = this.hero.getPosition();
            bullet.setPosition(cc.v2(pos.x,pos.y+this.hero.height/2));


        },this);
    },
    setBG(){
        this.bg1.y  =  this.bg1.y-this.bg_speed;
        this.bg2.y  =  this.bg2.y-this.bg_speed;

        if(this.bg1.y<= -this.bg1.height){
            this.bg1.y=this.bg2.y+this.bg1.height;
        }
        if(this.bg2.y<= -this.bg1.height){
            this.bg2.y=this.bg1.y+this.bg1.height;
        }
    },
    btn_click(sender,str){

        if(str=='pause'){
            this.isBgMove= false;
            this.pause_jiemian_node.active = true;
            this.btn_pause_node.active = false;
        }else if(str=='continue'){
            this.isBgMove= true;
            this.btn_pause_node.active = true;
            this.pause_jiemian_node.active = false;
        }else if(str=='back'){

        }else if(str=='restart'){
            this.hero.x=0;
            this.hero.y=-500;

            this.play_node.active= true;
            this.btn_pause_node.active = false;
            this.pause_jiemian_node.active = false;
        }

    },
    start() {
    },
    
    update (dt) {
        if(this.isBgMove){
            this.setBG();

          


        }else{
            
        }
    },
});