拖放问题

我正尝试着创造一款匹配游戏，即你拥有4个精灵，其中3个精灵都带有某些内容，而另一个精灵则拥有类似于答案的内容，例如，问题可能是分数和小数的匹配，而你将拥有3个分数或3个小数，而你将与之匹配的另一个精灵的对立面之一作为正确答案。但我的问题是，我不能让精灵欺骗他们碰撞。以下是我目前所掌握的信息。

/* 
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var game = new Phaser.Game(800, 600, Phaser.AUTO, '', {preload: preload, create: create, update: update});
function preload() {
    game.load.image('Cone','pics/ICE-Cream-cone_1.png');
    game.load.image('back','pics/BakerIceBackground_1.png');
    game.load.image('Shoot','pics/CreamShoot.png');
    game.load.image('star','pics/star.png');
}
var cone;
var text;
function create() {    
    back = game.add.sprite(0, 0, 'back');
    s1 = game.add.sprite(500, 250, 'Shoot');
    s2 = game.add.sprite(280, 250, 'Shoot');
    s3 = game.add.sprite(60, 250, 'Shoot');
    cone = game.add.sprite(300, 400, 'Cone');
    cone.inputEnabled = true;
    cone.input.enableDrag();
    game.physics.enable(cone, Phaser.Physics.ARCADE);
    var style = {font: "32px comic sans", fill :"#ff0044", wordwrap: true, wordWrapWidth: cone.width,align:"center"};
    text = game.add.text(0,0, "test", style);
    text.anchor.set(0.5);
}
function update() {       
    text.x = Math.floor(cone.x + cone.width / 2);
    text.y = Math.floor(cone.y + cone.height / 2);
    game.physics.arcade.overlap(cone,s1,collisionHandler,null,this);
    //CX = s2.x;
    //CY = s2.y;
    // console.log(CY);
    // console.log(CX);
    function collisionHandler() {
        console.log("game Over");
    }   
}