ichiko/PlayGroundScreen.java

## PlayGroundScreen.java
package cc.clv.revjune.pts.screen;

import cc.clv.revjune.pts.PTSGame;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.*;
import com.badlogic.gdx.utils.Array;

/**
 * Created by ichiko on 2015/02/07.
 */
public class PlayGroundScreen implements Screen {
    private final PTSGame game;

    private OrthographicCamera cam;

    private World world;
    private Box2DDebugRenderer debugRenderer;

    private Array<Body> bodiesList;

    public PlayGroundScreen(final PTSGame game) {
        this.game = game;

        float w = Gdx.graphics.getWidth();
        float h = Gdx.graphics.getHeight();
        cam = new OrthographicCamera();
        cam.setToOrtho(false, w, h);

        Box2D.init();
        // no gravity
        world = new World(new Vector2(0, 0), true);
        debugRenderer = new Box2DDebugRenderer();
        bodiesList = new Array<Body>();

        addWorldObjects();

        world.getBodies(bodiesList);
    }

    private void addWorldObjects() {
        Texture img = new Texture("square.png");
        Sprite sprite = new Sprite(img);

        float w = sprite.getWidth();   // 100px
        float h = sprite.getHeight();  // 100px

        // ここから剛体の定義

        BodyDef bodyDef = new BodyDef();
        bodyDef.type = BodyDef.BodyType.DynamicBody;
        bodyDef.position.set(300, 200);

        Body body = world.createBody(bodyDef);
        body.setUserData(sprite);

        PolygonShape shape = new PolygonShape();
//        shape.setAsBox(w, h);
        shape.setAsBox(w/2, h/2);

        FixtureDef fixtureDef = new FixtureDef();
        fixtureDef.shape = shape;
        fixtureDef.density = 1.0f;
        fixtureDef.friction = 1.0f;
        fixtureDef.restitution = 0.6f; // make it bounce little bit

        body.createFixture(fixtureDef);

        shape.dispose();
    }

    @Override
    public void show() {

    }

    @Override
    public void render(float delta) {
        Gdx.gl.glClearColor(0, 0, 1, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        game.batch.begin();
        for (Body body : bodiesList) {
            if (body.getUserData() != null) {
                Vector2 pos = body.getPosition();
                if (body.getUserData() instanceof Sprite) {
                    Sprite sprite = (Sprite) body.getUserData();
                    sprite.setRotation(MathUtils.radiansToDegrees * body.getAngle());
                    sprite.setPosition(pos.x - sprite.getWidth() / 2f,
                            pos.y - sprite.getHeight() / 2f);
                    sprite.draw(game.batch);
                }
            }
        }
        game.batch.end();

        debugRenderer.render(world, cam.combined);

        world.step(1/60f, 6, 2);
    }

    @Override
    public void resize(int width, int height) {

    }

    @Override
    public void pause() {

    }

    @Override
    public void resume() {

    }

    @Override
    public void hide() {

    }

    @Override
    public void dispose() {

    }
}
	package cc.clv.revjune.pts.screen;

	import cc.clv.revjune.pts.PTSGame;
	import com.badlogic.gdx.Gdx;
	import com.badlogic.gdx.Screen;
	import com.badlogic.gdx.graphics.GL20;
	import com.badlogic.gdx.graphics.OrthographicCamera;
	import com.badlogic.gdx.graphics.Texture;
	import com.badlogic.gdx.graphics.g2d.Sprite;
	import com.badlogic.gdx.math.MathUtils;
	import com.badlogic.gdx.math.Vector2;
	import com.badlogic.gdx.physics.box2d.*;
	import com.badlogic.gdx.utils.Array;

	/**
	* Created by ichiko on 2015/02/07.
	*/
	public class PlayGroundScreen implements Screen {
	private final PTSGame game;

	private OrthographicCamera cam;

	private World world;
	private Box2DDebugRenderer debugRenderer;

	private Array<Body> bodiesList;

	public PlayGroundScreen(final PTSGame game) {
	this.game = game;

	float w = Gdx.graphics.getWidth();
	float h = Gdx.graphics.getHeight();
	cam = new OrthographicCamera();
	cam.setToOrtho(false, w, h);

	Box2D.init();
	// no gravity
	world = new World(new Vector2(0, 0), true);
	debugRenderer = new Box2DDebugRenderer();
	bodiesList = new Array<Body>();

	addWorldObjects();

	world.getBodies(bodiesList);
	}

	private void addWorldObjects() {
	Texture img = new Texture("square.png");
	Sprite sprite = new Sprite(img);

	float w = sprite.getWidth(); // 100px
	float h = sprite.getHeight(); // 100px

	// ここから剛体の定義

	BodyDef bodyDef = new BodyDef();
	bodyDef.type = BodyDef.BodyType.DynamicBody;
	bodyDef.position.set(300, 200);

	Body body = world.createBody(bodyDef);
	body.setUserData(sprite);

	PolygonShape shape = new PolygonShape();
	// shape.setAsBox(w, h);
	shape.setAsBox(w/2, h/2);

	FixtureDef fixtureDef = new FixtureDef();
	fixtureDef.shape = shape;
	fixtureDef.density = 1.0f;
	fixtureDef.friction = 1.0f;
	fixtureDef.restitution = 0.6f; // make it bounce little bit

	body.createFixture(fixtureDef);

	shape.dispose();
	}

	@Override
	public void show() {

	}

	@Override
	public void render(float delta) {
	Gdx.gl.glClearColor(0, 0, 1, 1);
	Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

	game.batch.begin();
	for (Body body : bodiesList) {
	if (body.getUserData() != null) {
	Vector2 pos = body.getPosition();
	if (body.getUserData() instanceof Sprite) {
	Sprite sprite = (Sprite) body.getUserData();
	sprite.setRotation(MathUtils.radiansToDegrees * body.getAngle());
	sprite.setPosition(pos.x - sprite.getWidth() / 2f,
	pos.y - sprite.getHeight() / 2f);
	sprite.draw(game.batch);
	}
	}
	}
	game.batch.end();

	debugRenderer.render(world, cam.combined);

	world.step(1/60f, 6, 2);
	}

	@Override
	public void resize(int width, int height) {

	}

	@Override
	public void pause() {

	}

	@Override
	public void resume() {

	}

	@Override
	public void hide() {

	}

	@Override
	public void dispose() {

	}
	}