How to use CocosCreator to create a shooting game

cc.Class({
    extends: cc.Component,

    properties:
        playerNode: cc.Node,
        enemyNode: cc.Node,
        fireNode: cc.Node,
        scoreNode: cc.Label,
    },
    
     onLoad () {
        this.playLoad();
        this.fireLoad();
        this.enemyLoad();
         this.node.on("touchstart",this.fire,this);
         
     },

     update (dt) {
          if (Math.abs(this.fireNode.y-this.enemyNode.y)<(this.fireNode.height/3+this.enemyNode.height/3)
            &&Math.abs(this.fireNode.x-this.enemyNode.x)<(this.fireNode.width/3+this.enemyNode.width/3)){
              console.log("Defeat the enemy aircraft");
              this.scoreNode.string= ++this.score; //hit score this.fireNode.stopAction(this.fireAction);
            this.enemyNode.stopAction(this.enemyAction);
            this.enemyNode.active=false;
            this.fireNode.active=false;
            this.fireLoad();//Initialize bullets this.enemyLoad();//Initialize enemy aircraft}

     },

     // Close event listening onDestroy(){
        this.node.off("touchstart",this.fire,this);
     },
    // Initial player playLoad(){
        this.score=0;
        this.playerNode.y=-cc.winSize.height/4;
        
    },
    //Initialize bullet fireLoad(){
        this.fireNode.active=true;
        this.isFire=false;
        this.fireNode.x=this.playerNode.x;
        this.fireNode.y=this.playerNode.y+this.playerNode.height;
    },
    // Initialize the enemy enemyLoad(){
        this.enemyNode.active=true;
        this.enemyNode.x=Math.random()* cc.winSize.width;
        this.enemyNode.y=cc.winSize.height/3;
        let x = cc.winSize.width/2-this.enemyNode.width/2;
        let y=Math.random()* cc.winSize.height/4;
        let seq=cc.repeatForever(cc.sequence(cc.moveTo(1.5,cc.v2(-x,y)),cc.moveTo(1.5,cc.v2(x,y))));
        
        this.enemyAction = this.enemyNode.runAction (seq);
    },
    // Reload the game on death dear(){
        console.log("death");
        cc.director.loadScene("game_scenes");
    },


    // Fire bullet fire(){
         if(this.isFire) return;
         this.isFire=true;
        console.log("Start launching");
         var fireaction = cc.sequence(
             cc.moveTo(1,cc.v2(this.playerNode.x,cc.winSize.height/2)),
             cc.callFunc(()=>{
                this.dear();
            }));
        this.fireAction = this.fireNode.runAction(fireaction);
        console.log("End of launch");
     }

});