import org.jbox2d.common.Vec2;
import org.jbox2d.dynamics.Body;

import pulpcore.Input;
import pulpcore.Stage;
import pulpcore.sprite.Button;
import pulpcore.sprite.ImageSprite;
import pulpcore.sprite.Sprite;
import pulpfizz.physics.BodyUtils;
import pulpfizz.physics.NewWorld;
import pulpfizz.pulp.CameraControlledScene;
import pulpfizz.pulp.body.Java2DBodySprite;
import pulpfizz.pulp.body.PhysicsLayer;

public class GameScene extends CameraControlledScene
{
	private PhysicsLayer physics;
	private Hand hand;
	private Button practice;

	public static final String IMG_LOC = "img/";

	Menus.MainMenu menu;
	private ImageSprite titleSprite;
	ToyBox box;
	private Button home;
	private Button next;
	private Java2DBodySprite borderSprite;

	@Override
	public void load()
	{
		super.load();
		Stage.setFrameRate(60);
		getCamera().setRespondToInput(false);

		ImageSprite is = new ImageSprite(IMG_LOC + "bg.jpg", 0, -20);
		add(is);

		physics = new PhysicsLayer(40.0);
		physics.setAnchor(Sprite.SOUTH);
		add(physics);

		physics.setSize(Stage.getWidth(), Stage.getHeight() * 10f);
		physics.setLocation(Stage.getWidth() / 2f, Stage.getHeight());

		resetWorld();

		hand = new BlokksHand(physics, this);
		addToHUD(hand);

		Blokk.BodyShapes[] values = Blokk.BodyShapes.values();
		for (int i = 0; i < values.length; i++)
		{
			box.getContents().add(values[i]);
		}

		setCursor(Input.CURSOR_OFF);

		titleSprite = new ImageSprite(IMG_LOC + "drawing.png", 0, -170);
		add(titleSprite);

		menu = new Menus.MainMenu();
		addToHUD(menu);
		menu.setLocation(Stage.getWidth() / 2, Stage.getHeight() / 2);

		home = Button.createLabeledButton("Main Menu", 30, Stage.getHeight() - 5);
		home.setAnchor(Sprite.SOUTH_WEST);
		addToHUD(home);

		next = Button.createLabeledButton("Skip", Stage.getWidth() - 30, Stage.getHeight() - 5);
		next.setAnchor(Sprite.SOUTH_EAST);
		addToHUD(next);

		loadHomeButtons();
	}

	private void createWorld()
	{
		physics.setGravity(new Vec2(0, -20.0f));

		NewWorld world = physics.getWorld();
		world.setContinuousPhysics(true);
		world.setWorldIterations(20);
		//		world.setSpeedMultiplier(world.getSpeedMultiplier()*2f);

		/* Add a physical border to the world so our objects can't escape. */
		float h = physics.getPhysicsHeight();
		float w = physics.getPhysicsWidth();

		Body l = BodyUtils.createBox(world, -w/2f-2, 0, 5, h);
		Body r = BodyUtils.createBox(world, w/2f+2, 0, 5, h);
		Body b = BodyUtils.createBox(world, 0, -h/2f, w+3, 2.5f);
		physics.add(new Java2DBodySprite(l,physics,0.25f));
		physics.add(new Java2DBodySprite(r,physics,0.25f));
		physics.add(new Java2DBodySprite(b,physics,0.25f));

		/* 
		 * Expand the world a bit, so mouse movements near the edge don't do anything nasty.
		 */
		physics.getWorld().getAABB().lowerBound.subLocal(new Vec2(100, 100));
		physics.getWorld().getAABB().upperBound.addLocal(new Vec2(100, 100));
	}

	int challengeCount = 1;

	@Override
	public void update(int elapsedTime)
	{
		super.update(elapsedTime);

		if (menu.practice.isClicked())
		{
			resetWorld();
						box.setInfinite(true);
						loadPracticeButtons();
		} else if (menu.challenge.isClicked())
		{
			challengeCount = 1;
			resetWorld();
			Challenges.challenge(physics, box, challengeCount++);
						loadChallengeButtons();
		} else if (home.isClicked())
		{
			resetWorld();
			loadHomeButtons();
		} else if (next.isClicked())
		{
			if (challengeCount == 5)
				challengeCount = 1;
			resetWorld();
			Challenges.challenge(physics, box, challengeCount++);
		}
	}

	synchronized void resetWorld()
	{
		physics.removeAll();
		physics.getWorld().destroy();
		physics.getWorld().unregisterPostStep(box);
		createWorld();
		Vec2 boxPos = new Vec2(-physics.getPhysicsWidth() / 2 + 1, -physics.getPhysicsHeight() / 2 + 2);
		box = new ToyBox(physics, boxPos.x, boxPos.y);
	}

	boolean swipeClean;

	void loadPracticeButtons()
	{
		home.visible.set(true);
		titleSprite.alpha.animateTo(0, 0);
		menu.alpha.animateTo(0, 0);
	}

	void loadChallengeButtons()
	{
		home.visible.set(true);
		titleSprite.alpha.animateTo(0, 0);
		menu.alpha.animateTo(0, 0);
		next.visible.set(true);
	}

	void loadHomeButtons()
	{
		home.visible.set(false);
		next.visible.set(false);
		titleSprite.alpha.animateTo(255, 200);
		menu.alpha.animateTo(255, 200);
	}

}