'use strict';

var CollisionMap = function() {
  this.map = [];
};

CollisionMap.prototype = {
  addToMap: function(x, y) {
    if (!this.map) {
      this.map = [];
    }
    if (!this.map[x]) {
      this.map[x] = [];
    }

    this.map[x][y] = true;
  },
  removeFromMap: function(x,y) {
    if (!this.map || !this.map[x]) {
      return;
    }
    this.map[x][y] = false;
  },
  checkMap: function(x,y) {
    if (!this.map || !this.map[x]) {
      return false;
    }
    return !!this.map[x][y];
  }
}

module.exports = CollisionMap;