var map = {
  background: {
    url: '/img/landscape.jpg'
  },
  front: {
    url: '/img/front.png'
  },
  size:{
    x: 960,
    y: 633, 
  },
  limits: {
    x: {
      min: -433,
      max: 232
    },
    y:{
      min: -220,
      max: 50
    }
  },  
  objects:[
    {
      name: "tree",
      url: '/img/tree.png',
      xv: null,
      yv: 25,          
      x: 344,
      y: 211
      
    },
    {
      name: "tree",
      url: '/img/tree2.png',
      xv: null,
      yv: 15,            
      x: 211,
      y: 165
      
    }
  ],
  player:{
    url: "/img/player.png",
    lives: 3,
    dvx:250,
    dvy:750,
    scale: 3,
    scale_ratio_divisor: 50,
    velocity_divisor: 50,
    sprite: sprite
  },
  players:[
    //otros jugadores...
  ]
}