package {
    // import stuff
    import flash.display.Bitmap;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.utils.getDefinitionByName;
    import flash.display.DisplayObject;
    import flash.display.MovieClip;

    // import box2d
    import Box2D.Dynamics.Joints.*;
    import Box2D.Dynamics.*;
    import Box2D.Collision.*;
    import Box2D.Collision.Shapes.*;
    import Box2D.Common.Math.*;
    import flash.events.*;

    // import the sprite data
    import PhysicsData;

    public class Main extends Sprite {

        public var nextSprite:Number=10;

        // create an object containing the shape data
        public var physicsData:PhysicsData = new PhysicsData();

        // create the box2d world, set up gravity
        public var world:b2World=new b2World(new b2Vec2(0,10.0),true);


        public function Main():void {
            // Grab the bitmap from the compiled resources
            var bdArt = new backdrop();
            var beaker:MovieClip = new fleaker();
            var dum:MovieClip = new dummy();

            //var artClass:Class = getDefinitionByName("cupunder") as Class;
            //var artClass2:Class = getDefinitionByName("cupover") as Class;
            //var artClass3:Class = getDefinitionByName("dummy") as Class;

            // Creat a display object to add to the stage
            //var bitmap:Bitmap = new Bitmap(new artClass(0, 0), "auto", true);
            //var bitmap2:Bitmap = new Bitmap(new artClass2(0, 0), "auto", true);
            //var bitmap3:Bitmap = new Bitmap(new artClass2(0, 0), "auto", true);

            // create a physics body from the physics data structure
            var body:b2Body=physicsData.createBody("beaker",
                                                   world,
                                                   b2Body.b2_staticBody,
                                                   beaker);

            var floor:b2Body=physicsData.createBody("floor", world, b2Body.b2_staticBody, dum);

            // set the position of the sprite
            body.SetPositionAndAngle(
                        new b2Vec2(800/physicsData.ptm_ratio,460/physicsData.ptm_ratio), 0);

            floor.SetPositionAndAngle(
                        new b2Vec2(-400/physicsData.ptm_ratio,460/physicsData.ptm_ratio), 0);



            //bitmap2.x = 600;
            //bitmap2.y = 337;
            //bitmap3.x = -5;
            //bitmap3.y = -5;

            addChildAt(bdArt, 0);
            // add the sprite to the scene
            //addChildAt(bitmap, 1);
            //addChildAt(bitmap3, 1);
            //addChildAt(bitmap2, 2);
            addChildAt(beaker, 1);

            // add an event listener to update sprite's from
            // physics data
            addEventListener(Event.ENTER_FRAME, update, false, 0, true);
            stage.addEventListener(MouseEvent.MOUSE_DOWN, addNewSprites);
        }

        // this function adds new sprites to the scene
        public function addNewSprites(e:MouseEvent):void {

            // only add sprites every 30th frame
            /*nextSprite--;
            if(nextSprite > 0)
            {
                return;
            }
            nextSprite = 30;*/

            // names of the items / sprites we use
            var items:Array=["blueberry2",
                            "blueberry3"];

            var mcbb = new Blueberry();

            // choose a random object
            var name:String=items[Math.floor(Math.random()*items.length)];

            // Grab the bitmap from the compiled resources
            var artClass:Class = getDefinitionByName(name) as Class;

            // Creat a display object to add to the stage
            var bitmap:Bitmap = new Bitmap(new artClass(0, 0), "auto", true);

            // create a physics body from the physics data structure
            var body:b2Body=physicsData.createBody("bb",
                                                   world,
                                                   b2Body.b2_dynamicBody,
                                                   mcbb);

            body.SetUserData(mcbb);

            // set a random start position
            body.SetPositionAndAngle(new b2Vec2(Math.random()*11 + 26,-4), 0);

            //body.SetUserData(texture);

            // add the sprite to the scene
            addChildAt(mcbb, 1);
        }

        // this function runs the world simulation
        // and adjusts the sprites according to the positions
        // of the objects in the simulation
        public function update(e : Event):void {
            // step the world
            world.Step(1 / 30, 10, 10);

            world.ClearForces();

            // add new sprites to the world
            //addNewSprites();

            // update the sprites from the physics data
            var Body:b2Body = world.GetBodyList();
            for ( ; Body; Body = Body.GetNext()) {
                if (Body.GetUserData()!=null) {

                    // get the user date value from the body
                    //var bb:MovieClip=Body.GetUserData() as MovieClip;

                    // extract the position and set the sprite to it
                    Body.GetUserData().x=Body.GetPosition().x*physicsData.ptm_ratio;
                    Body.GetUserData().y=Body.GetPosition().y*physicsData.ptm_ratio;

                    var dx = Body.GetPosition().x*physicsData.ptm_ratio - 960;
                    var dy = Body.GetPosition().y*physicsData.ptm_ratio;
                    var degrees = (Math.atan2(dy, dx) * 180 / Math.PI);

                    // set the rotation of the sprite
                    Body.GetUserData().rotation = Body.GetAngle() * (180/Math.PI);
                    //Body.GetUserData().spec.rotation = degrees -90;

                    if((Body.GetPosition().x < 810/physicsData.ptm_ratio && Body.GetPosition().y > 500/physicsData.ptm_ratio) || (Body.GetPosition().x > 1090/physicsData.ptm_ratio && Body.GetPosition().y > 500/physicsData.ptm_ratio))
                        Body.GetUserData().gotoAndStop(66);
                    else if(Body.GetUserData().currentFrame == 66)
                        Body.GetUserData().play();
                }
            }
        }
    }
}