Pipe Prefabs

Pipe.js

'use strict';
var nameCounter = 0;
var Pipe = function(game, x, y, frame) {
  Phaser.Sprite.call(this, game, x, y, 'pipe', frame);
  this.anchor.setTo(0.5, 0.5);
  this.game.physics.arcade.enableBody(this);

  this.body.allowGravity = false;
  this.body.immovable = true;
  this.name = 'pipe-' + nameCounter;
  nameCounter++;
  
};

Pipe.prototype = Object.create(Phaser.Sprite.prototype);
Pipe.prototype.constructor = Pipe;

Pipe.prototype.update = function() {
  console.log(this.name, this.x);
  // write your prefab's specific update code here
  
};

module.exports = Pipe;

PipeGroup.js

'use strict';

var Pipe = require('./pipe');

var PipeGroup = function(game, parent) {

  
  Phaser.Group.call(this, game, parent);

  this.topPipe = new Pipe(this.game, 0, 0, 0);
  this.bottomPipe = new Pipe(this.game, 0, 440, 1);
  this.add(this.topPipe);
  this.add(this.bottomPipe);
  this.hasScored = false;
  this.scoreLine = new Phaser.Line(0,0,100,this.game.height); 
  this.setAll('body.velocity.x', -100);
};

PipeGroup.prototype = Object.create(Phaser.Group.prototype);
PipeGroup.prototype.constructor = PipeGroup;

PipeGroup.prototype.update = function() {
  if(!this.topPipe.inWorld && this.exists) {
    this.exists = false;
  }
  this.scoreLine.start = new Phaser.Point(this.topPipe.world.x, 0);
  this.scoreLine.end = new Phaser.Point(this.topPipe.world.x,this.game.height);
};

PipeGroup.prototype.reset = function(x, y) {
  this.topPipe.reset(0,0);
  this.bottomPipe.reset(0,440);
  this.x = x;
  this.y = y;
  this.setAll('body.velocity.x', -100);
  this.hasScored = false;
  this.exists = true;

};

PipeGroup.prototype.stop = function() {
};

module.exports = PipeGroup;

play.js

update: function() {
    // enable collisions between the bird and the ground
    this.game.physics.arcade.collide(this.bird, this.ground, this.deathHandler, null, this);

    this.pipes.forEachExists(function(pipeGroup) {
        this.game.physics.arcade.collide(this.bird, pipeGroup, this.deathHandler, null, this);
    }, this);
    
    this.checkScoreLines();
  },
  
   checkScoreLines: function() {
    this.pipes.forEach(function(pipeGroup) {
        if(pipeGroup) {
            var p = this.scoreLine.intersects(pipeGroup.scoreLine, true);
            if(p && !pipeGroup.hasScored) {
                console.debug('score!');
                pipeGroup.hasScored = true;
            }
        }
    }, this);
  },