A state manager for Phaser v2 html5 game platform

stateManager.js

'use strict';

export const stateManager = {
  state: [],

  states: {},

  currentState: function() {
    return this.state;
  },

  addState: function(state, expiration, fn) {
    this.state.unshift(state);
    if (expiration) {
      this.expireState(state, expiration, fn);
    }
  },

  removeState: function(state) {
    this.state.splice(this.state.indexOf(state));
  },

  registerState: function(name, state) {
    this.states[name] = state;
  },

  expireState: function(state, expiration, fn) {
    setTimeout(() => {
      this.removeState(state);
      if (fn) fn();
    }, expiration);
  },

  fireStates: function() {
    this.currentState().map(currentState => {
      this.states[currentState]();
    });
  }

};