import com.badlogic.gdx.Game;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.BodyDef;
import com.badlogic.gdx.physics.box2d.BodyDef.BodyType;
import com.badlogic.gdx.physics.box2d.Box2DDebugRenderer;
import com.badlogic.gdx.physics.box2d.Contact;
import com.badlogic.gdx.physics.box2d.ContactImpulse;
import com.badlogic.gdx.physics.box2d.ContactListener;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.badlogic.gdx.physics.box2d.Manifold;
import com.badlogic.gdx.physics.box2d.PolygonShape;
import com.badlogic.gdx.physics.box2d.World;

public class GameLauncher extends Game {

	public SpriteBatch batch;
	private World world;
	private OrthographicCamera camera;
	private Box2DDebugRenderer debugRenderer;

	private Body player1, shadowPlayer1;
	private Body player2, shadowPlayer2;

	public short CATEGORY_PLAYER_1 = 0x0002;
	public short CATEGORY_SHADOW_1 = 0x0004;
	public short CATEGORY_PLAYER_2 = 0x0008;
	public short CATEGORY_SHADOW_2 = 0x0010;

	public void create() {
		this.batch = new SpriteBatch();
		this.world = new World(new Vector2(0, 0), true);
		this.camera = new OrthographicCamera();
		this.camera.setToOrtho(false, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
		this.camera.update();
		//this.mapRenderer = new OrthogonalTiledMapRenderer(this.map);

		BodyDef bodyDef = new BodyDef();
		bodyDef.type = BodyType.DynamicBody;
		bodyDef.position.set(80, 20);
		player1 = this.world.createBody(bodyDef);
		PolygonShape collider = new PolygonShape();
		collider.setAsBox(16, 16);
		FixtureDef fDef = new FixtureDef();
		fDef.density = 0f;
		fDef.friction = 0f;
		fDef.restitution = 0f;
		//fDef.filter.groupIndex = -1;
		fDef.filter.categoryBits = CATEGORY_PLAYER_1;
		fDef.filter.maskBits = (short) (0xFFFF - CATEGORY_SHADOW_1 - CATEGORY_PLAYER_1 - CATEGORY_PLAYER_2);
		fDef.shape = collider;
		player1.setUserData("player");
		player1.createFixture(fDef);

		bodyDef.type = BodyType.KinematicBody;
		bodyDef.position.set(20, 20);
		shadowPlayer1 = this.world.createBody(bodyDef);
		collider = new PolygonShape();
		collider.setAsBox(16, 16);
		fDef = new FixtureDef();
		fDef.density = 0f;
		fDef.friction = 0f;
		fDef.restitution = 0f;
		//fDef.filter.groupIndex = -2;
		fDef.filter.categoryBits = CATEGORY_SHADOW_1;
		fDef.filter.maskBits = (short) 0xFFFF;
		fDef.shape = collider;
		shadowPlayer1.createFixture(fDef);


		bodyDef.type = BodyType.DynamicBody;
		bodyDef.position.set(20, 60);
		player2 = this.world.createBody(bodyDef);
		collider = new PolygonShape();
		collider.setAsBox(16, 16);
		fDef = new FixtureDef();
		fDef.density = 0f;
		fDef.friction = 0f;
		fDef.restitution = 0f;
		//fDef.filter.groupIndex = -2;
		fDef.filter.categoryBits = CATEGORY_PLAYER_2;
		fDef.filter.maskBits = (short) (0xFFFF - CATEGORY_SHADOW_2 - CATEGORY_PLAYER_1 - CATEGORY_PLAYER_2);
		fDef.shape = collider;
		player2.setUserData("player");
		player2.createFixture(fDef);

		bodyDef.type = BodyType.KinematicBody;
		bodyDef.position.set(80, 60);
		shadowPlayer2 = this.world.createBody(bodyDef);
		collider = new PolygonShape();
		collider.setAsBox(16, 16);
		fDef = new FixtureDef();
		fDef.density = 0f;
		fDef.friction = 0f;
		fDef.restitution = 0f;
		//fDef.filter.groupIndex = -1;
		fDef.filter.categoryBits = CATEGORY_SHADOW_2;
		fDef.filter.maskBits = (short) 0xFFFF;
		fDef.shape = collider;
		shadowPlayer2.createFixture(fDef);

		collider.dispose();

		this.debugRenderer = new Box2DDebugRenderer();
	}

	public void render() {
        Gdx.gl.glClearColor(0, 0, 1, 1);
        Gdx.gl.glBlendFunc(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        this.player1.setLinearVelocity(0, 0);
        this.shadowPlayer1.setLinearVelocity(0, 0);
        if(Gdx.input.isKeyPressed(Keys.Z)) {
        	this.player1.setLinearVelocity(new Vector2(player1.getLinearVelocity().x, 30));
        }
        if(Gdx.input.isKeyPressed(Keys.S)) {
        	this.player1.setLinearVelocity(new Vector2(player1.getLinearVelocity().x, -30));
        }
        if(Gdx.input.isKeyPressed(Keys.Q)) {
        	this.player1.setLinearVelocity(new Vector2(-30, player1.getLinearVelocity().y));
        }
        if(Gdx.input.isKeyPressed(Keys.D)) {
        	this.player1.setLinearVelocity(new Vector2(30, player1.getLinearVelocity().y));
        }
        if(Gdx.input.isKeyPressed(Keys.UP)) {
        	this.player2.setLinearVelocity(new Vector2(player1.getLinearVelocity().x, 30));
        }
        if(Gdx.input.isKeyPressed(Keys.DOWN)) {
        	this.player2.setLinearVelocity(new Vector2(player1.getLinearVelocity().x, -30));
        }
        if(Gdx.input.isKeyPressed(Keys.LEFT)) {
        	this.player2.setLinearVelocity(new Vector2(-30, player1.getLinearVelocity().y));
        }
        if(Gdx.input.isKeyPressed(Keys.RIGHT)) {
        	this.player2.setLinearVelocity(new Vector2(30, player1.getLinearVelocity().y));
        }
        this.shadowPlayer1.setTransform(this.player1.getPosition(), 0);
        this.shadowPlayer2.setTransform(this.player2.getPosition(), 0);
        this.world.step(1/60f, 6, 2);
        debugRenderer.render(this.world, camera.combined);
        this.camera.update();
	}

	public void dispose() {
		batch.dispose();
	}
}