Implementation of simple finite state machine

Example of usage

var FsmModule = require('../index.js');

var FSMConstants = function()
{
};

FSMConstants.StateNames = {
	INIT_STATE: 'fsm.state.init',
	GAMEPLAY_STATE: 'fsm.state.gameplay',
	PAUSE_STATE: 'fsm.state.pause',
UNKNOWN_STATE: 'unknown'
};

Object.freeze(FSMConstants.StateNames);

var InitState = function(context) {
FsmModule.FSMState.call(this, FSMConstants.StateNames.INIT_STATE, context);
};	


InitState.prototype = Object.create(FsmModule.FSMState.prototype);
InitState.prototype.constructor = InitState;

InitState.prototype.enter = function () {
	'use strict';
    FsmModule.FSMState.prototype.enter.call(this);
this._data.enterStateResult = this._name;
};

InitState.prototype.exit = function () {
	'use strict';
    FsmModule.FSMState.prototype.exit.call(this);
this._data.exitStateResult = this._name;
};

var GameplayState = function(context) {
	'use strict';

FsmModule.FSMState.call(this, FSMConstants.StateNames.GAMEPLAY_STATE, context);
};	

GameplayState.prototype = Object.create(FsmModule.FSMState.prototype);
GameplayState.prototype.constructor = GameplayState;

GameplayState.prototype.enter = function () {
	'use strict';

    FsmModule.FSMState.prototype.enter.call(this);
this._data.enterStateResult = this._name;
};

GameplayState.prototype.exit = function () {
	'use strict';
    FsmModule.FSMState.prototype.exit.call(this);
this._data.exitStateResult = this._name;
};

var PauseState = function(context) {
	'use strict';

FsmModule.FSMState.call(this, FSMConstants.StateNames.PAUSE_STATE, context);
};	

PauseState.prototype.exit = function () {
	'use strict';
    FsmModule.FSMState.prototype.enter.call(this);
this._data.exitStateResult = this._name;
};

PauseState.prototype = Object.create(FsmModule.FSMState.prototype);
PauseState.prototype.constructor = PauseState;

PauseState.prototype.enter = function () {
	'use strict';

    FsmModule.FSMState.prototype.exit.call(this);
this._data.enterStateResult = this._name;
};
   
var TestFSMConfig = function(context) {
	'use strict';
FsmModule.FSMConfiguration.call(this);

var initState = new InitState(context);
var gameplayState = new GameplayState(context);
var pauseState = new PauseState(context);

this.addState(initState);
this.addState(gameplayState);
this.addState(pauseState);
this.setInitialState(initState);

var transition = new FsmModule.FSMTransition(initState, gameplayState);
this.addTransition(transition);
transition = new FsmModule.FSMTransition(gameplayState, pauseState);
this.addTransition(transition);
transition = new FsmModule.FSMTransition(pauseState, gameplayState);
this.addTransition(transition);
transition = new FsmModule.FSMTransition(gameplayState, gameplayState);
this.addTransition(transition);

};
TestFSMConfig.prototype = Object.create(FsmModule.FSMConfiguration.prototype);
TestFSMConfig.prototype.constructor = TestFSMConfig;

var currentSateContext = {enterStateResult : FSMConstants.StateNames.UNKNOWN_STATE, exitStateResult  : FSMConstants.StateNames.UNKNOWN_STATE};
var fsm = fsmFactory.createFSM('testFSM', new TestFSMConfig(currentSateContext));

fsm.goToState(FSMConstants.StateNames.GAMEPLAY_STATE);