createFromObjects（）在phaser中不起作用？(createFromObjects() not working in phaser?)

 我正在尝试用移相器制作游戏。 我创建了一个带有对象层的tilemap。 但是，当我尝试将对象层中的对象添加到组“checkers”时，重叠不起作用。 这是我的代码： 
 
function preload()
{
    game.load.spritesheet("bird","assets/flappybird.png",92,64,3);
    game.load.tilemap('map', 'assets/map.json', null, Phaser.Tilemap.TILED_JSON);
    game.load.image('tiles', 'assets/obstacle.png');
    game.load.image('checktiles', 'assets/empty.png');
    game.stage.backgroundColor = '#c9c9c9';

}
function create()
{
     game.physics.startSystem(Phaser.Physics.ARCADE);
     map = game.add.tilemap('map');
     //OBSTACLES
     map.addTilesetImage('obstacle', 'tiles');
     layer = map.createLayer('Tilelaag 1');
     layer.resizeWorld();
     map.setCollisionBetween(1, 12);
     //CHECKERS
     checkers = game.add.group();
     checkers.enableBody=true;
     map.createFromObjects('Object Checkers', 5, 'checktiles', 0, true, false, checkers);
    //PLAYER
    player=game.add.sprite(92,game.world.heigth-300,"bird");
    player.scale.setTo(0.5,0.5);
    game.physics.arcade.enable(player);
    player.body.gravity.y=300;
    player.animations.add("fly",[0,1,2],10,true);
    player.body.collideWorldBounds = true;
    player.body.velocity.x=150;
    //CURSORS
    cursors=game.input.keyboard.createCursorKeys();
    spacebar=game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR);
    //CAMERA
    game.camera.follow(player);
}
function update()
{
    var hit=game.physics.arcade.collide(layer,player);
    game.physics.arcade.overlap(player, checkers,Addpoint,null,this);
    player.animations.play("fly");
    if(spacebar.isDown)
    {
        player.body.velocity.y = -150;
    }
    if(hit)
    {
        game.state.restart();
    }
}
function Addpoint()
{
    console.log("Called");
}

I' am trying to make a game in phaser. I have created a tilemap, with an objectlayer. However when I' am trying to add an object from the object layer to the group "checkers" the overlap doesn't work. Here is my code:
 
function preload()
{
    game.load.spritesheet("bird","assets/flappybird.png",92,64,3);
    game.load.tilemap('map', 'assets/map.json', null, Phaser.Tilemap.TILED_JSON);
    game.load.image('tiles', 'assets/obstacle.png');
    game.load.image('checktiles', 'assets/empty.png');
    game.stage.backgroundColor = '#c9c9c9';

}
function create()
{
     game.physics.startSystem(Phaser.Physics.ARCADE);
     map = game.add.tilemap('map');
     //OBSTACLES
     map.addTilesetImage('obstacle', 'tiles');
     layer = map.createLayer('Tilelaag 1');
     layer.resizeWorld();
     map.setCollisionBetween(1, 12);
     //CHECKERS
     checkers = game.add.group();
     checkers.enableBody=true;
     map.createFromObjects('Object Checkers', 5, 'checktiles', 0, true, false, checkers);
    //PLAYER
    player=game.add.sprite(92,game.world.heigth-300,"bird");
    player.scale.setTo(0.5,0.5);
    game.physics.arcade.enable(player);
    player.body.gravity.y=300;
    player.animations.add("fly",[0,1,2],10,true);
    player.body.collideWorldBounds = true;
    player.body.velocity.x=150;
    //CURSORS
    cursors=game.input.keyboard.createCursorKeys();
    spacebar=game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR);
    //CAMERA
    game.camera.follow(player);
}
function update()
{
    var hit=game.physics.arcade.collide(layer,player);
    game.physics.arcade.overlap(player, checkers,Addpoint,null,this);
    player.animations.play("fly");
    if(spacebar.isDown)
    {
        player.body.velocity.y = -150;
    }
    if(hit)
    {
        game.state.restart();
    }
}
function Addpoint()
{
    console.log("Called");
}

原文：https://stackoverflow.com/questions/42039879