import flash.events.Event;
import flash.events.KeyboardEvent;
import flash.display.MovieClip;
import flash.ui.Keyboard;

beetle.x = 5;
beetle.y = 350;

var up:Boolean = false;
var down:Boolean = false;
var left:Boolean = false;
var right:Boolean = false;

var speed:Number = 5;

stage.addEventListener(KeyboardEvent.KEY_DOWN,keyPressHandler);
stage.addEventListener(KeyboardEvent.KEY_UP,keyReleaseHandler);
addEventListener(Event.ENTER_FRAME,enterFrameHandler);

function hit():Boolean
{
    var i:int = 1;

    while (this["tree" + i]) {
        if (beetle.hitTestObject(this["tree" + i])) {
            return true;
        }

        i++;
    }

    return false;
}

function enterFrameHandler(event:Event):void
{
    if (left && !right) {
        beetle.x -=  speed;

        if(hit()) {
            beetle.x += speed;
        }
    }
    if (right && !left) {
        beetle.x +=  speed;
        beetle.rotation = 0;

        if(hit()) {
            beetle.x -= speed;
        }
    }
    if (up && !down) {
        beetle.y -=  speed;
        beetle.rotation = 0;

        if(hit()) {
            beetle.y += speed;
        }
    }
    if (down && !up) {
        beetle.y +=  speed;
        beetle.rotation = 0;

        if(hit()) {
            beetle.y -= speed;
        }
    }

    if (left && up && ! right && ! down)
    {
        beetle.rotation = 355;
    }
    if (right && up && ! left && ! down)
    {
        beetle.rotation = 5;
    }
    if (left && down && ! right && ! up)
    {
        beetle.rotation = 5;
    }
    if (right && down && ! left && ! up)
    {
        beetle.rotation = 355;
    }

    if (beetle.y < 0)
    {
        beetle.y = 5;
    }
    if (beetle.y > 510)
    {
        beetle.y = 505;
    }
    if (beetle.x < 0)
    {
        beetle.x = 5;
    }
    if (beetle.x > 799)
    {
        gotoAndStop("5");
    }
}

function keyPressHandler(event:KeyboardEvent):void
{
    switch ( event.keyCode )
    {
        case Keyboard.UP :
            up = true;
            break;
        case Keyboard.DOWN :
            down = true;
            break;
        case Keyboard.LEFT :
            left = true;
            break;
        case Keyboard.RIGHT :
            right = true;
            break;
    }
}

function keyReleaseHandler(event:KeyboardEvent):void
{
    switch ( event.keyCode )
    {
        case Keyboard.UP :
            up = false;
            break;
        case Keyboard.DOWN :
            down = false;
            break;
        case Keyboard.LEFT :
            left = false;
            break;
        case Keyboard.RIGHT :
            right = false;
            break;
    }
}