Javascript 那只鸟为什么没有撞到窗台上？

我正在使用

phaser.js

制作一个flappy bird游戏

我的问题是它不会与壁架碰撞。你如何更换相机（你知道在flappy bird中，他们喜欢移动相机）

任何关于制作我的游戏的其他提示都将不胜感激

var game=new Phaser.game（800600，Phaser.CANVAS，'Phaser demo'{
预加载：预加载，
创建：创建，
更新：更新，
渲染：渲染
});
var播放器；
var starfield；
变量游标；
var fireButton；
var gameOver；
变距；
var vaRandomUpLedgeSize；
var底部壁架；
函数预加载（）{
游戏。加载。图像（'starfield'，'data:image/png；base64，Ivborw0kgoaaaansuheugaaajaaaeacayaaabcv/9PAAAEWklEQVR42u3ZsW7UShSA4XltxAMgxGPwHHSwRSQaKpR0FCDRQY+agazej8fesf0vn8llru2zj//aubnh+bvv6fusaqeqeqeqeqeqd7biqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqaqa在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目前，ZZZZGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGYLY6O9V51KBLTJFRNLEBE4jp1kBlTrFrn0vEuXVfP1dpJ+TSgdCCZ/BGIBISAEHIBAQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEQAEKARLF+C+C+C+C+UWNEWNEWAYNEWAACUHH0RVHHHHHYNKYNKYNKYNK；
game.load.image（'player'，'https://i.imgur.com/JArA3tQ.png');
游戏。加载。图像数据：图像/png；Bas64，IfBorWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWeWe数据：数据：数据：数据：数据：图像/数据：图像/PN巴巴巴巴利（数据：数据：图像/PNPNG/巴巴巴巴巴利（图像/PNPNG；数据：图像/png；数据：图像/png；数据：图像/png；巴巴巴利利（数据：图像/png；数据：图像/巴巴巴巴巴利（例如：图像/png；巴利利利利利利利利利利（数据：图像/UY29KZXKoBn/UAAAAELFTKSUQMCC'）；
游戏。加载。图像数据：图像/png；Bas64，基础64，基础64，基础64，基础64，基础64，基础64，基础64，基础64，基础64，基础64，基础64，基础64，基础4，基础4，基础4，基础6，基础6，基础4，基础6，基础6，基础6，基础6，基础6，基础6，基础6，基础6，基础4，基础6，基础4，基础4，基础4，基础4，基础3，基础4，数据，数据，数据，数据，数据，数据，数据，数据，数据，数据，数据，数据，数据，数据，数据，数据：数据：数据：数据：数据：图像，数据：图像，数据：图像，数据：图像，数据：图像，数据：图像，数据：图像，数据：图像，数据：图像，数据：图像，数据：图像，巴巴巴巴巴巴巴巴基。图像；图像；图像；图像；图像；巴巴巴巴巴巴巴巴巴巴巴巴利；图像；图像；巴巴巴巴巴巴巴巴巴YQAZ/7gaaaabjru5erkjgg=='）；
}
函数create（）{
//滚动的星域背景
游戏。物理。启动系统（相位器。物理。拱廊）；
starfield=game.add.tileSprite（0,0800600，'starfield'）；
starfield.刻度设置为（1,2.5）；
starfield.enableBody=true；
//英雄！
player=game.add.sprite（50400，'player'）；
player.anchor.setTo（0.5,0.5）；
玩家。比例。设定到（1.25，1.5）；
游戏。物理。街机。启用（玩家）；
游戏。物理。启用（玩家，移相器。物理。街机）；
player.body.gravity.y=450；
player.body.collizeWorldBounds=真；
upEdge=game.add.sprite（400,0，'upEdge'）；
bottomLedge=game.add.sprite（400365，'bottomLedge'）；
随机项大小（）；
upEdge.scale.setTo（1，vaRandomUpLedgeSize）；
随机项大小（）；
底部凸耳刻度设置为（1，vaRandomUpLedgeSize）；
fireButton=game.input.keyboard.addKey（Phaser.keyboard.SPACEBAR）；
//还有一些可以玩游戏的控件
cursors=game.input.keyboard.CreateCursorWorkeys（）；
}
函数更新（）{
//滚动背景
starfield.tilePosition.x-=2；
player.x++；
//空格键
如果（player.y>=591.75）{
player.y=591.75；
player.x--；
}
如果（fireButton.isDown）{
player.body.velocity.y=-250；
}
游戏。物理。街机。碰撞（玩家，upLedge）；
游戏。物理。街机。碰撞（玩家，底架）；
}
函数render（）{
}
函数大小（）{
vaRandomUpLedgeSize=Math.floor（Math.random（）*（3-1））+1；
如果（vaRandomUpLedgeSize参见：

只有当精灵体具有速度时，碰撞才会触发

因此，我所做的是更改
update（）
函数：我删除了对
player.x++；
的调用，并在
create（）
函数中为播放器添加了一个x velocity


仅供参考-您已经定义了函数
randomLedgeSize
twice是的，我是故意这么做的哦，nvm，第二个应该是randomLedgeSizeBot（）；哦，天哪，那是什么目的？仍然没有冲突：（我正要在JSFIDLE上编辑新代码，很抱歉，我弄错了！我把它弄到了壁架的顶部，我不知道发生了什么事。非常感谢！你还有其他制作游戏的技巧吗？关于如何让它永无止境？
var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-demo', {

preload: preload,
  create: create,
  update: update,
  render: render
});

var player;
var starfield;
var cursors;
var fireButton;
var gameOver;
var upLedge;
var vaRandomUpLedgeSize;
var bottomLedge;



function preload() {
  game.load.image('starfield', 'data:image/png;base64,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');
  game.load.image('player', 'https://i.imgur.com/JArA3tQ.png');
  game.load.image('upLedge', 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABYAAACGCAYAAADZ0np4AAAAiklEQVR42u3UsQ2DQAwF0FslPT0jpE+BmIQBaLMDw2QUSpY45IIrTggFQVK94tvds2TJTnN+52npS4ZPU/q36cZH6ZFX+8wJDAaDwWAwGAwGg8FgMBgMBoPBYDAYDAaDwWAwGAwGg8FgMBgM3oej/CJpm3J30pUVHK0DDP4nHCd9JjG8fgP1Swh4Bcd7BZH+S2fyAAAALXRFWHRTb2Z0d2FyZQBieS5ibG9vZGR5LmNyeXB0by5pbWFnZS5QTkcyNEVuY29kZXKoBn/uAAAAAElFTkSuQmCC');
  game.load.image('bottomLedge', 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABUAAAB6CAYAAABQtRgZAAAAgklEQVR42u3TsQmAMBQFwKxib+8I9hbiJA5g6w4O4yiWLhFRUERslAgWF3h5pDmSwA9VUcbUCVPs45MMc3P0Xdoxj+F82PtN6i47GgpNja5b6oTPxvQ6Zk+/4fz07aZQKBQKhUKhUCgUCoVCoVAoFAqFQqFQKBQKhUKhUCj0n+gXawGd+WGo+T+h1gAAAC10RVh0U29mdHdhcmUAYnkuYmxvb2RkeS5jcnlwdG8uaW1hZ2UuUE5HMjRFbmNvZGVyqAZ/7gAAAABJRU5ErkJggg==');

}

function create() {
  //  The scrolling starfield background
  game.physics.startSystem(Phaser.Physics.ARCADE);

  starfield = game.add.tileSprite(0, 0, 800, 600, 'starfield');
  starfield.scale.setTo(1, 2.5);
  starfield.enableBody = true;


  //  The hero!
  player = game.add.sprite(50, 400, 'player');
  player.anchor.setTo(0.5, 0.5);
  player.scale.setTo(1.25, 1.5);
  game.physics.arcade.enable(player);
  game.physics.enable(player, Phaser.Physics.ARCADE);
  player.body.gravity.y = 450;
  player.body.collideWorldBounds = true;




  upLedge = game.add.sprite(400, 0, 'upLedge');
  bottomLedge = game.add.sprite(400, 365, 'bottomLedge');

  randomLedgeSize();
  upLedge.scale.setTo(1, vaRandomUpLedgeSize);

  randomLedgeSize();
  bottomLedge.scale.setTo(1, vaRandomUpLedgeSize);



  fireButton = game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR);
  //  And some controls to play the game with
  cursors = game.input.keyboard.createCursorKeys();
}

function update() {
  //  Scroll the background
  starfield.tilePosition.x -= 2;

  player.x++;
  //SPACEBAR 
  if (player.y >= 591.75) {
    player.y = 591.75;
    player.x--;


  }
  if (fireButton.isDown) {
    player.body.velocity.y = -250;
  }

  game.physics.arcade.collide(player, upLedge);
  game.physics.arcade.collide(player, bottomLedge);

}

function render() {

}

function randomLedgeSize() {
  vaRandomUpLedgeSize = Math.floor(Math.random() * (3 - 1)) + 1;

  if (vaRandomUpLedgeSize <= 1.5) {
    vaRandomUpLedgeSize = 1;
  } else {
    vaRandomUpLedgeSize = 2;
  }
}

function randomLedgeSizeBot() {
  vaRandomUpLedgeSize = Math.floor(Math.random() * (3 - 1)) + 1;

  if (vaRandomUpLedgeSize <= 1.5) {
    bottomLedge.y = 500;
  } else {
    vaRandomUpLedgeSize = 2;
  }
}

var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-demo', {
  preload: preload,
  create: create,
  update: update,
  render: render
});

var player;
var starfield;
var cursors;
var fireButton;
var gameOver;
var ledges;

function preload() {
  game.load.image('starfield', 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJAAAAEACAYAAABcV/9PAAAEWklEQVR42u3ZsW7UShSA4XltxAMgxGPwHHSwRSQaKpR0FCDRQY+AgAzeiccej8fesf0Vn8Llru2zJ//aubnh+bv3P6FUsAQEhIAQEAICASEgBISAQEAIiJYDevv7D1BIQAgIASEgBAQCQkDsKCC/DMNvohEQAkJAICAEhIAQEAgIASEgBAQCQkAICAGBgBAQAkJACAgEhIAQEAICASEgBISAQEAICAEhIBAQAkJACAgBgYAQEAJCQCAgBISAEBAICAEhIAQEAkJACAgBISBLQEAICAEhIBAQAkJACAgEhIAQEAICASEgBISAQEAICAEhIAQEAkJACAgBgYAQEAJCQCAgBISAEBAICAEhIASEgEBACAgBISAQEAJCQAgIBISAEBACAgEhIASEgEBACAgBISAEBAJCQAgIAYGAEBACQkAgIASEgBAQCAgBISAEhIBAQAgIATHD1x8PgwREUTh7Cykc9ZPR6t0iN5y97D0c9ZNxi7vF1F5K42l552FPn4ytZ6j5zV4aT+p93vr7EvbwyVhjjqlz1PiGd+erda6S+db8gD7+u1D7jbVwB1jzMbJXtT+g3d+FrYbc8vGx1iPkaBHVOGeTAd3qdn+miGqdL2xxq6zxWtq0akBrHsNBA0JAICAEhICuvfly+ef1x/snzjbHEXayeUAP3+/+eByq+3P3z2eb4wg7WRTQp28fnki9dqjqx+G6wZcsq5U5zriTUGu4nCH7VcdKltXKHGfeSZj7vE0NN1Rx/7xx1fHXuc/+VuY4+07CnNvlWN1DFXc/kOUOmTtLK3PYSXQHmio+Z8j+D2NDQ47dJnNnaWUOO7n/fwcaOih+fs65NZbcJnNmaWUOO/lrcUCpavu/U9hiWVvPYSdRQEMH5SwrdXx/yKk3FA85Nksrc9jJZbuAuq+3XlbNOezkst4jLPW83fp2veYcdrLiIywevv93OUPW+rStOYedzHyEpf7zcGzIscGXPDpaneOMO8l+hOX+gqr/P+OmBi99dLQ6xxl3ErqDh752wzy7e3El/l1DfFx/+PjY1PXi1835tKWOzTl36WNjbCdTj4742NT1au+k/70p3Ul87GhA3Ytefn51pR9DKqCpY+Nhxl6XWtbUsbkzzHls5OwkFdDedzJ0bBi61aUukvvGc46fe41uYTWvEX9D4jvC2XfSjyZ1XIhvYzlvYG7VU+fIOWfNawxdZ+haJTtZY94WdpI6dyj5BJR+YsbeyJJl5F5jzfd4lJ3MPXfIufBQlaWfyrl3sKXXyLlOSRhH3EnJucNat+Ean6yly6o9v51kBlTjFrnlebe4jp1kBlTrFrn0vEuXVfP1dpJ+TSgdCCZ/BgIBISAEhIBAQAgIASEgEBACQkAICAGBgBAQAkJAICAEhIAQEAgIASEgBAQCQkAICAEhIBAQAkJACAgEhIAQEAICASEgBISAQEAICAEhIBAQAkJACAgBgYAQEAJCQCAgBISAEBAICAHRlF+C+UHwNeMuEwAAAC10RVh0U29mdHdhcmUAYnkuYmxvb2RkeS5jcnlwdG8uaW1hZ2UuUE5HMjRFbmNvZGVyqAZ/7gAAAABJRU5ErkJggg==');
  game.load.image('player', 'https://i.imgur.com/JArA3tQ.png');
  game.load.image('upLedge', 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABYAAACGCAYAAADZ0np4AAAAiklEQVR42u3UsQ2DQAwF0FslPT0jpE+BmIQBaLMDw2QUSpY45IIrTggFQVK94tvds2TJTnN+52npS4ZPU/q36cZH6ZFX+8wJDAaDwWAwGAwGg8FgMBgMBoPBYDAYDAaDwWAwGAwGg8FgMBgM3oej/CJpm3J30pUVHK0DDP4nHCd9JjG8fgP1Swh4Bcd7BZH+S2fyAAAALXRFWHRTb2Z0d2FyZQBieS5ibG9vZGR5LmNyeXB0by5pbWFnZS5QTkcyNEVuY29kZXKoBn/uAAAAAElFTkSuQmCC');
  game.load.image('bottomLedge', 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABUAAAB6CAYAAABQtRgZAAAAgklEQVR42u3TsQmAMBQFwKxib+8I9hbiJA5g6w4O4yiWLhFRUERslAgWF3h5pDmSwA9VUcbUCVPs45MMc3P0Xdoxj+F82PtN6i47GgpNja5b6oTPxvQ6Zk+/4fz07aZQKBQKhUKhUCgUCoVCoVAoFAqFQqFQKBQKhUKhUCj0n+gXawGd+WGo+T+h1gAAAC10RVh0U29mdHdhcmUAYnkuYmxvb2RkeS5jcnlwdG8uaW1hZ2UuUE5HMjRFbmNvZGVyqAZ/7gAAAABJRU5ErkJggg==');

}

function create() {
  //  The scrolling starfield background
  game.physics.startSystem(Phaser.Physics.ARCADE);

  starfield = game.add.tileSprite(0, 0, 800, 600, 'starfield');
  starfield.scale.setTo(1, 2.5);

  //  The hero!
  player = game.add.sprite(50, 400, 'player');
  player.anchor.setTo(0.5, 0.5);
  player.scale.setTo(1.25, 1.5);  
  game.physics.arcade.enable(player);
  game.physics.enable(player, Phaser.Physics.ARCADE);
  player.enableBody = true;
  player.body.gravity.y = 450;
  player.body.collideWorldBounds = true;
  player.body.velocity.x = 100;

  // The ledges
  ledges = game.add.group();
  ledges.enableBody = true;
  var upLedge = ledges.create(200, 0, 'upLedge');
  upLedge.body.immovable = true;
  var bottomLedge = ledges.create(200, 465, 'bottomLedge');
  bottomLedge.body.immovable = true;

  //  Controls to play the game with
  fireButton = game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR);
  cursors = game.input.keyboard.createCursorKeys();
}

function update() {
  //  Scroll the background
  starfield.tilePosition.x -= 2;

  // If spacebar is pressed, increase Y velocity
  if (fireButton.isDown) {
    player.body.velocity.y = -250;
  }

    // Check for collisions
  game.physics.arcade.collide(player, ledges);
}

function render() {
}