import flash.events.KeyboardEvent;
import flash.events.Event;
import flash.geom.Point;

//Onda/Goda objekt OSV
var goodieAmount:int =25;
var allGoodies:Array = new Array();
var badieAmount:int = 10;
var allBadies:Array = new Array();
//Piltangenter OSV
var leftArrow:Boolean = false;
var rightArrow:Boolean = false;
var upArrow:Boolean = false;
var downArrow:Boolean = false;
var shootNow:Boolean = false;
//Skepparvariabler OSV
var shipSpeed:Number = 0;
var shipAccel:Number = 0.002;
var shipDecel:Number = 0.0003;
var maxSpeed:Number = 0.3;
var shipRot:Number = 0;
var turnSpeed:Number = 0.4;
var newY:int;
var newX:int;
var lastTime:int = 0;
var myShip:shipMC = new shipMC();
myShip.x = 400;
myShip.y = 300;
addChild(myShip);
var allShots:Array = new Array;
var point = 0;
var antalliv = 5;
score.text = "Score "
lives.text ="Liv " + antalliv;

//Lyssnare OSV

stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressedDown);
stage.addEventListener(KeyboardEvent.KEY_UP, keyPressedUp);
this.addEventListener(Event.ENTER_FRAME,appLoop);
this.addEventListener(Event.ENTER_FRAME,objectLoopGood);
this.addEventListener(Event.ENTER_FRAME,objectLoopBad);

//Funktioner
//Initieringsfunktion goda/onda objekt
function initGoodies():void {
    for(var i:int=0;i<goodieAmount;i++){
        var myGoodie:Goodie = new Goodie();
        myGoodie.x = 50 + Math.floor(700*Math.random());
        myGoodie.y = 50 + Math.floor(500*Math.random());
        myGoodie.dx = 5 - Math.floor(10*Math.random());
        myGoodie.dy = 5 - Math.floor(10*Math.random());
        allGoodies.push(myGoodie);
        addChild(myGoodie);
    }
}

function initBadies():void {
    for(var i:int=0;i<badieAmount;i++){
        var myBadie:Badie = new Badie();
        myBadie.x = 50 + Math.floor(700*Math.random());
        myBadie.y = 50 + Math.floor(500*Math.random());
        myBadie.dx = 5 - Math.floor(10*Math.random());
        myBadie.dy = 5 - Math.floor(10*Math.random());
        allBadies.push(myBadie);
        addChild(myBadie);
    }
}

function keyPressedDown(event:KeyboardEvent) {
    if (event.keyCode == 37) {
        leftArrow = true;
    } else if (event.keyCode == 39) {
        rightArrow = true;
    } else if (event.keyCode == 38) {
        upArrow = true;
    } else if (event.keyCode == 40) {
        downArrow = true;
    } else if (event.keyCode == 32) {
        shootNow = true;
    }
}

function keyPressedUp(event:KeyboardEvent) {
    if (event.keyCode == 37) {
        leftArrow = false;
    } else if (event.keyCode == 39) {
        rightArrow = false;
    } else if (event.keyCode == 38) {
        upArrow = false;
    } else if (event.keyCode == 40) {
        downArrow = false;
    } else if (event.keyCode == 32) {
        shootNow = false;
    }
}

function objectLoopGood(event:Event) {
    for (var j:int= 0;j<allGoodies.length;j++) {
        var newX:Number = allGoodies[j].x + allGoodies[j].dx;
        var newY:Number = allGoodies[j].y + allGoodies[j].dy;

        if(newX<allGoodies[j].width/2) {
            allGoodies[j].x = allGoodies[j].width/2 + (allGoodies[j].width/2 - newX);
            allGoodies[j].dx *= -1;
        }
        else if(newX > (800 - allGoodies[j].width/2)) {
            allGoodies[j].x = (800 - allGoodies[j].width/2) - (newX - (800 - allGoodies[j].width/2));
            allGoodies[j].dx *= -1;
        }
        else {
            allGoodies[j].x = newX;
        }
        //flytta i Y-led
        if(newY<allGoodies[j].height/2) {
            allGoodies[j].y = allGoodies[j].height/2 + (allGoodies[j].height/2 - newY);
            allGoodies[j].dy *= -1;
        }
        else if(newY > (600 - allGoodies[j].height/2)) {
            allGoodies[j].y = (600 - allGoodies[j].height/2) - (newY - (600 - allGoodies[j].height/2));
            allGoodies[j].dy *= -1;
        }
        else {
            allGoodies[j].y = newY;
        }

        //Testa krock med skepp
        var hitDist:Number = (myShip.width/2 + allGoodies[j].width/2);
        var dist:Number = Point.distance(new Point(myShip.x,myShip.y), new Point(allGoodies[j].x,allGoodies[j].y));
        if (dist<hitDist)
        {
            removeChild(allGoodies[j]);
            allGoodies.splice(j,1);
            point+=50;
            score.text = "Score " + point;
        }
    }
}

function objectLoopBad(event:Event) {
    for (var j:int= 0;j<allBadies.length;j++) {
        var newX:Number = allBadies[j].x + allBadies[j].dx;
        var newY:Number = allBadies[j].y + allBadies[j].dy;

        if(newX<allBadies[j].width/2) {
            allBadies[j].x = allBadies[j].width/2 + (allBadies[j].width/2 - newX);
            allBadies[j].dx *= -1;
        }
        else if(newX > (800 - allBadies[j].width/2)) {
            allBadies[j].x = (800 - allBadies[j].width/2) - (newX - (800 - allBadies[j].width/2));
            allBadies[j].dx *= -1;
        }
        else {
            allBadies[j].x = newX;
        }
        //flytta i Y-led
        if(newY<allBadies[j].height/2) {
            allBadies[j].y = allBadies[j].height/2 + (allBadies[j].height/2 - newY);
            allBadies[j].dy *= -1;
        }
        else if(newY > (600 - allBadies[j].height/2)) {
            allBadies[j].y = (600 - allBadies[j].height/2) - (newY - (600 - allBadies[j].height/2));
            allBadies[j].dy *= -1;
        }
        else {
            allBadies[j].y = newY;
        }

        //Testa krock med skepp
        var hitDist:Number = (myShip.width/2 + allBadies[j].width/2);
        var dist:Number = Point.distance(new Point(myShip.x,myShip.y), new Point(allBadies[j].x,allBadies[j].y));
        if (dist<hitDist)
        {
            removeChild(allBadies[j]);
            allBadies.splice(j,1);
            point-=25;
            antalliv-=1;
            score.text = "Score " + point;
            lives.text = "Liv " + antalliv;
            if (antalliv<1)
                {
                    stage.removeEventListener(KeyboardEvent.KEY_DOWN, keyPressedDown);
                    stage.removeEventListener(KeyboardEvent.KEY_UP, keyPressedUp);
                    this.removeEventListener(Event.ENTER_FRAME,appLoop);
                    this.removeEventListener(Event.ENTER_FRAME,objectLoopGood);
                    this.removeEventListener(Event.ENTER_FRAME,objectLoopBad);
                    gameover1.text = "Game ";
                    gameover2.text = "Over!";
                }
        }

        for (var t:int= 0;t<allShots.length;t++)
        {
            var hitbadDist:Number = (allShots[t].width/2 + allBadies[j].width/2);
            var badDist:Number = Point.distance(new Point(allShots[t].x,allShots[t].y), new Point(allBadies[j].x,allBadies[j].y));
            if (badDist<hitbadDist)
            {
                removeChild(allBadies[j]);
                allBadies.splice(j,1);
                removeChild(allShots[t])
                allShots.splice(t,1);
                point+=25;
                score.text = "Score " + point;
                lives.text = "Liv " + antalliv;
            }
        }
        }
}

function appLoop(event:Event)
{
    if (lastTime ==0)
    {
        lastTime = getTimer();
    }
    var timeDiff:int = getTimer()-lastTime;
    lastTime += timeDiff;
    //Höger/Vänsterpilar
    if (leftArrow)
    {
        myShip.rotation -=(shipSpeed+0.1)*turnSpeed*timeDiff;
    }
    if (rightArrow)
    {
        myShip.rotation +=(shipSpeed+0.1)*turnSpeed*timeDiff;
    }
    //Upp/Ned
    if (upArrow)
    {
        shipSpeed += shipAccel*timeDiff;
        if (shipSpeed > maxSpeed)
        {
            shipSpeed = maxSpeed;
        }
    }
    else if (downArrow)
    {
        shipSpeed -= shipAccel*timeDiff;
        if (shipSpeed < maxSpeed)
        {
            shipSpeed = -maxSpeed;
        }
    }
    else if (shipSpeed > 0)
    {
        shipSpeed -= shipDecel*timeDiff;
        if (shipSpeed < 0)
        {
            shipSpeed = 0;
        }
    }
    else if (shipSpeed < 0)
    {
        shipSpeed += shipDecel*timeDiff;
        if (shipSpeed > 0)
        {
            shipSpeed = 0;
        }
    }
    if (shipSpeed != 0)
    {
        moveShip(timeDiff);
    }
    moveShots(timeDiff);
    if(shootNow == 1)
    {
        var myShot:Shot = new Shot();
        myShot.x = myShip.x;
        myShot.y = myShip.y;
        myShot.rotation = myShip.rotation;
        var shotAngleRadians:Number = (myShot.rotation/180)*(Math.PI);
        myShot.dx = Math.cos(shotAngleRadians)*(shipSpeed+maxSpeed*2);
        myShot.dy = Math.sin(shotAngleRadians)*(shipSpeed+maxSpeed*2);
        allShots.push(myShot);
        addChild(myShot);
        moveShots(timeDiff);
    }
}

function moveShip(timeDiff:Number)
{

    var shipPos:Point = new Point(myShip.x,myShip.y);
    var shipAngle:Number = myShip.rotation;
    var shipAngleRadians:Number = (shipAngle/360)*(2.0*Math.PI);
    var shipMove:Number = shipSpeed*timeDiff;
    var dx:Number = Math.cos(shipAngleRadians)*shipMove;
    var dy:Number = Math.sin(shipAngleRadians)*shipMove;
    newX = shipPos.x+dx;
    newY = shipPos.y+dy;
    if(newX>=myShip.width/2 && newX<=(800-myShip.width/2))
    {
        myShip.x = newX;
    }
    if(newY>=myShip.height/2 && newY<=(600-myShip.height/2))
    {
        myShip.y = newY;
    }
}
function moveShots(timeDiff:Number)
    {
        for(var i:int;i<allShots.length; i++)
        {
            var shotPos:Point = new Point(allShots[i].x, allShots[i].y);
            if(allShots[i].x>0 && allShots[i].x<800 && allShots[i].y>0 && allShots[i].y<600)
            {
                allShots[i].x += allShots[i].dx*timeDiff;
                allShots[i].y += allShots[i].dy*timeDiff;
            }
            else
            {
                removeChild(allShots[i]);
                allShots.splice(i,1);
            }
        }
    }


initGoodies();
initBadies();