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Uncaught ReferenceError: player is not defined


predator
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Chrome is throwing this error when I run the following code:

Uncaught ReferenceError: player is not defined

These are my files.

index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title>Phaser</title>
  <script src="js/phaser.js"></script>
  <script type="text/javascript" src="js/Boot.js"></script>
	<script type="text/javascript" src="js/Preload.js"></script>
	<script type="text/javascript" src="js/Game.js"></script>

  <style type="text/css">
    body {
      padding: 0;
      margin: 0;
    }
  </style>
</head>
<body>
  <script src='js/main.js'></script>
</body>

main.js

var game = game || {};

game.game = new Phaser.Game(800, 600, Phaser.AUTO, '');

game.game.state.add('Boot', game.Boot);
game.game.state.add('Preload', game.Preload);
game.game.state.add('Game', game.Game);

game.game.state.start('Boot');

Preload.js

var game = game || {};

game.Preload = function(){};

game.Preload.prototype = {
  preload: function() {
    this.preloadbg = this.add.sprite(this.game.world.centerX, this.game.world.centerY, 'loadbg');
    console.log('reached');
    this.preloadbg.anchor.setTo(0.5);
    this.preloadbg.scale.setTo(8);
    this.preloadbar = this.add.sprite(this.game.world.centerX, this.game.world.centerY, 'loadbar');
    this.preloadbar.anchor.setTo(0.5);
    this.preloadbar.scale.setTo(10);
    this.load.setPreloadSprite(this.preloadbar);

    this.load.image('armor', 'assets/armor.png');
    this.load.image('tile1', 'assets/tile1.png');
    this.load.image('sky', 'assets/sky.png');
    this.load.spritesheet('dude', 'assets/dude.png', 24, 33);
    this.load.spritesheet('armordude', 'assets/dudewarmor.png', 24, 33);
    this.load.spritesheet('armorbaddie', 'assets/baddiewarmor.png', 20, 26);
  },
  create: function() {
    this.state.start('Game');
  }
};

Boot.js

var game = game || {};

game.Boot = function(){};

game.Boot.prototype = {
  preload: function() {
    this.load.image('loadbg', 'assets/loadingbackground.png');
  	this.load.image('loadbar', 'assets/loadingbar.png');
  },
  create: function() {
    this.stage.smoothed = false;
    this.scale.scaleMode = Phaser.ScaleManager.SHOW_ALL;
    this.scale.pageAlignHorizontally = true;
    this.scale.pageAlignVertically = true;
    this.scale.setScreenSize = true;
    this.game.physics.startSystem(Phaser.Physics.ARCADE);
    this.state.start('Preload');
  }
};

Game.js

var game = game || {};

game.Game = function(){};

game.Game.prototype = {
  preload: function() {
    console.log('passed');
    var direction;
    var tile;
  },
  create: function() {
    console.log('reached');
    this.add.sprite(0, 0, 'sky');
    this.add.sprite(0, 0, 'armor');
    var player = this.add.sprite(0, 0, 'dude');
    this.game.physics.arcade.enable(player);
    player.animations.add('left', [2, 3], 5, true);
    player.animations.add('right', [4,5], 5, true);
    player.body.gravity.y = 300;
    player.body.bounce.y = 0.2;
    player.collideWorldBounds = true;
    var platforms = this.add.group();
    platforms.enableBody = true;
    for (var i = 0; i < this.world.width / 64; i ++)
    {
      tile = platforms.create(i * 64, this.world.height - 64, 'tile1');
      tile.scale.setTo(2, 2);
    }
  },
  update: function() {
    var playerCollision = this.physics.arcade.collide(player, platforms);
    var cursors = this.input.keyboard.createCursorKeys();

    player.body.velocity.x = 0;

    // Left
    if (cursors.left.isDown)
    {
      player.body.velocity.x = -150;
      player.animations.play('left');
      direction = 'left';
    }
    // Right
    else if (cursors.left.isDown)
    {
      player.body.velocity.x = 150;
      player.animations.play('right');
      direction = 'right';
    }
    // Idle
    else
    {
      player.animations.stop()
      if (direction = 'left')
      {
        player.frame = 0;
      }
      else if (direction = 'right')
      {
        player.frame = 1;
      }
    }
    // Jumping
    if (cursors.up.isDown && player.body.touching.down && playerCollision)
    {
      player.body.velocity.y = -350;
    }
    //Smashing
    if (cursors.down.isDown && !player.body.touching.down && !playerCollision)
    {
      player.body.velocity.y = 350;
    }
  }
};

The error is on this line of the code:

var playerCollision = this.physics.arcade.collide(player, platforms);

It claims the player doesn't exist when I have it defined right on line 15!

 

Could someone please tell me how to fix this error, and how to avoid it next time?

Thanks in advance!

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You're using a variable to define your player, the variable is local to the function only and not available outside of it, you must declare the player as a property of the prototype in order to access it in the prototypes functions.

var game = game || {};

game.Game = function(){};

game.Game.prototype = {
  preload: function() {
    console.log('passed');
    var direction;
    var tile;
  },
  create: function() {
    console.log('reached');
    this.add.sprite(0, 0, 'sky');
    this.add.sprite(0, 0, 'armor');
    this.player = this.add.sprite(0, 0, 'dude');
    this.game.physics.arcade.enable(player);
    this.player.animations.add('left', [2, 3], 5, true);
    this.player.animations.add('right', [4,5], 5, true);
    this.player.body.gravity.y = 300;
    this.player.body.bounce.y = 0.2;
    this.player.collideWorldBounds = true;
    var platforms = this.add.group();
    platforms.enableBody = true;
    for (var i = 0; i < this.world.width / 64; i ++)
    {
      tile = platforms.create(i * 64, this.world.height - 64, 'tile1');
      tile.scale.setTo(2, 2);
    }
  },
  update: function() {
    var playerCollision = this.physics.arcade.collide(this.player, platforms);
    var cursors = this.input.keyboard.createCursorKeys();

    this.player.body.velocity.x = 0;

    // Left
    if (cursors.left.isDown)
    {
      this.player.body.velocity.x = -150;
      this.player.animations.play('left');
      direction = 'left';
    }
    // Right
    else if (cursors.left.isDown)
    {
      this.player.body.velocity.x = 150;
      this.player.animations.play('right');
      direction = 'right';
    }
    // Idle
    else
    {
      this.player.animations.stop()
      if (direction = 'left')
      {
        this.player.frame = 0;
      }
      else if (direction = 'right')
      {
        this.player.frame = 1;
      }
    }
    // Jumping
    if (cursors.up.isDown && this.player.body.touching.down && playerCollision)
    {
      this.player.body.velocity.y = -350;
    }
    //Smashing
    if (cursors.down.isDown && !this.player.body.touching.down && !playerCollision)
    {
      this.player.body.velocity.y = 350;
    }
  }
};

 

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