package {
    import flash.display.*;
    import flash.events.*;
    import flash.text.*;
    import flash.utils.Timer;
    import flash.media.Sound;
    import flash.media.SoundChannel;
    import flash.net.URLRequest;

    public class MemoryGame extends Sprite {
        static const numLights:uint = 5;

        private var lights:Array; // list of light objects
        private var playOrder:Array; // growing sequence
        private var repeatOrder:Array;

        // text message
        private var textMessage:TextField;
        private var textScore:TextField;

        // timers
        private var lightTimer:Timer;
        private var offTimer:Timer;

        var gameMode:String; // play or replay
        var currentSelection:MovieClip = null;

        var noteOneSound:Note1 = new Note1();
        var noteTwoSound:Note2 = new Note2();
        var noteThreeSound:Note3 = new Note3();
        var noteFourSound:Note4 = new Note4();
        var noteFiveSound:Note5 = new Note5();

        public function MemoryGame() {
            // text formating
            var textFormat = new TextFormat();
            textFormat.font = "Arial";
            textFormat.size = 24;
            textFormat.align = "center";

            // create the upper text field
            textMessage = new TextField();
            textMessage.width = 550;
            textMessage.y = 110;
            textMessage.selectable = false;
            textMessage.defaultTextFormat = textFormat;
            addChild(textMessage);

            // create the lower text field
            textScore = new TextField();
            textScore.width = 550;
            textScore.y = 250;
            textMessage.selectable = false;
            textScore.defaultTextFormat = textFormat;
            addChild(textScore);


            // make lights
            lights = new Array();
            for(var i:uint=0;i<numLights;i++) {
                var thisLight:Light = new Light();
                thisLight.lightColors.gotoAndStop(i+1); //show proper frame
                thisLight.x = i*75+100; // position
                thisLight.y = 175;
                thisLight.lightNum = i; // remember light number
                lights.push(thisLight); // add to array of lights
                addChild(thisLight); // add to array of lights
                thisLight.addEventListener(MouseEvent.CLICK,clickLight);
                thisLight.buttonMode = true;
            }

            // reset sequence, do first turn
            playOrder = new Array();
            gameMode = "play";
            nextTurn();
        }

        // add one to the sequence and start
        public function nextTurn() {
            // add new light to sequence
            var r:uint = Math.floor(Math.random()*numLights);
            playOrder.push(r);

            // show text
            textMessage.text = "Watch and Listen.";
            textScore.text = "Sequence Length: "+playOrder.length;

            // set up timers to show sequence
            lightTimer = new Timer(1000,playOrder.length+1);
            lightTimer.addEventListener(TimerEvent.TIMER,lightSequence);

            // start timer
            lightTimer.start();
        }

        // play next in sequence
        public function lightSequence(event:TimerEvent) {
            // where are we in the sequence
            var playStep:uint = event.currentTarget.currentCount-1;

            if (playStep < playOrder.length) { // not last time
                lightOn(playOrder[playStep]);
            } else { // sequence over
                startPlayerRepeat();
            }
        }

        // start player repetition
        public function startPlayerRepeat() {
            currentSelection = null;
            textMessage.text = "Repeat.";
            gameMode = "replay";
            repeatOrder = playOrder.concat();
        }

        // turn on light and set timer to turn it off
        public function lightOn(newLight) {
            if (newLight == 1) {
                playSound(noteOneSound);
            } else if (newLight == 2) {
                playSound (noteTwoSound);
            } else if (newLight == 3) {
                playSound(noteThreeSound);
            } else if (newLight == 4) {
                playSound (noteFourSound);
            } else if (newLight == 5) {
                playSound(noteFiveSound);
            }
            currentSelection = lights[newLight];
            currentSelection.gotoAndStop(2); // turn on light
            offTimer = new Timer(500,1); // remember to turn it off
            offTimer.addEventListener(TimerEvent.TIMER_COMPLETE,lightOff);
            offTimer.start();
        }

        // turn off light if it is still on
        public function lightOff(event:TimerEvent) {
            if (currentSelection != null) {
                currentSelection.gotoAndStop(1);
                currentSelection = null;
                offTimer.stop();
            }
        }

        // recieve mouse clicks on light
        public function clickLight(event:MouseEvent) {
            // prevent mouse clicks while showing sequence
            if (gameMode != "replay") return;

            // turn off light if it hasn't gone off by itself
            lightOff(null);

            // correct match
            if (event.currentTarget.lightNum == repeatOrder.shift()){
                lightOn(event.currentTarget.lightNum);

                // check to see if sequence is over
                if (repeatOrder.length == 0) {
                    nextTurn();
                }

            // got it wrong
            } else {
                textMessage.text = "Game Over!";
                gameMode = "gameover";
            }
        }
        public function playSound(soundObject:Object) {
            var channel:SoundChannel = soundObject.play();
        }
    }
}