QrkCallbackTest.java

In PhysicalSprite, add body.setUserData(this)

public void createBody(BodyDef bodyDef, FixtureDef fixture) {
		body = Physics.world.createBody(bodyDef);	
		body.setUserData(this);
		body.createFixture(fixture);		
		this.bodyDef = bodyDef;
		usePhysics = true;
}

*******************

package com.stickycoding.rokonexamples;

import javax.microedition.khronos.opengles.GL10;

import android.util.Log;
import android.view.MotionEvent;

import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Contact;
import com.badlogic.gdx.physics.box2d.ContactListener;
import com.badlogic.gdx.physics.box2d.Fixture;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import com.badlogic.gdx.physics.box2d.World;
import com.qrk.pachinko.PachinkoActivity.SpriteName;
import com.stickycoding.rokon.DrawPriority;
import com.stickycoding.rokon.Layer;
import com.stickycoding.rokon.PhysicalSprite;
import com.stickycoding.rokon.RokonActivity;
import com.stickycoding.rokon.Scene;
import com.stickycoding.rokon.Sprite;
import com.stickycoding.rokon.Texture;
import com.stickycoding.rokon.Window;

public class QrkCallbackTest extends RokonActivity
{
	public enum SpriteName
	{
		PIN,BALL,EDGEBOX;
	}
	
	public PhysicalSprite sprite;
	public Texture texture,texture2, face;
	public World world;
	Window window;
	public void onCreate() 
	{		
		forceFullscreen();
		forcePortrait();
		setGameSize(4.8f, 8.0f);
		setDrawPriority(DrawPriority.PRIORITY_NORMAL);
		setGraphicsPath("textures/");
		createEngine();
	}
	
	public void onLoadComplete() 
	{
		texture = new Texture("circle.png");
		face = new Texture("sad.png");
		myScene.useTexture(texture);
		myScene.useTexture(face);
	
		myScene.setWorld(world = new World(new Vector2(0f, 10f), true));
				
		ContactListener coli = new ContactListener() 
		{	
			public void endContact(Contact contact) {}			
			public void beginContact(Contact contact) 
			{				
				Fixture fixA = contact.getFixtureA();
				Fixture fixB = contact.getFixtureB();
				PhysicalSprite psA =(PhysicalSprite)fixA.getBody().getUserData();
				PhysicalSprite psB =(PhysicalSprite)fixB.getBody().getUserData();				
				Log.v("CallBackTest", "psA = "+psA.getName());
				Log.v("CallBackTest", "psB = "+psB.getName());
			}
		};
		world.setContactListener(coli);
		
		window = new Window(0, 0, 4.8f, 8f);
		
		initStaticScene();		
		myScene.setWindow(window);	
		myScene.getLayer(1).ignoreWindow();
		myScene.setDefaultLineWidth(2f);
		setScene(myScene);		
	}

	private void initStaticScene() 
	{
		DrawPin(2.3f , 5.5f);
		DrawPin(1.7f , 6.5f);
		createStaticBox(0.0f, 7.0f, 4.8f, 1.0f );
		createStaticBox(0.0f, 0.0f, 0.1f, 7.0f );
		createStaticBox(4.7f, 0.0f, 0.1f, 7.0f );		
	}

	private void DrawPin(float x,float y) 
	{
		sprite = new PhysicalSprite(x, y, 0.1f, 0.1f);
		sprite.setName(SpriteName.PIN.toString());
		sprite.setTexture(texture);
		FixtureDef fixtureDef = new FixtureDef();
		fixtureDef.density = 10f;
		fixtureDef.friction = 0.2f;				
		sprite.createStaticCircle(fixtureDef);				
		myScene.add(sprite);
	}

	private void createStaticBox(float x,float y,float width, float height)
	{
		sprite = new PhysicalSprite(x,y,width,height);
		sprite.setName(SpriteName.EDGEBOX.name());
		sprite.setTexture(face);
		FixtureDef fixtureDef = new FixtureDef();
		fixtureDef.density = 10f;
		fixtureDef.friction = 0.2f;
		sprite.createStaticBox(fixtureDef);		
		myScene.add(sprite);
	}
	
	public Scene myScene = new Scene(2, 128) 
	{		
		boolean addNew = false;
		float x, y;
		int count = 0;
		int maxNoOfBalls = 100;
		float ballsize = 0.4f; 
				
		@Override
		public void onTouchDown(float x, float y, MotionEvent event) 
		{
			if(!addNew)
			{
				if(count>=maxNoOfBalls)
				{	
					Layer ly = this.getLayer(0);
					for (int i = 0; i < ly.getGameObjectCount(); i++) 
					{						
						if(ly.getGameObject(i) != null)
						{	
							PhysicalSprite ps = (PhysicalSprite)ly.getGameObject(i);
							if(ps.getName() == SpriteName.BALL.name())
							{
								ps.remove();
								count--;
								break;
							}
						}
					}					
				}
				this.x = x;			
				this.y=y;
				addNew = true;
			}
		}
		
		public void onPreDraw(GL10 gl) 
		{
			if(addNew)
			{
				sprite = new PhysicalSprite(2.1f, y, ballsize, ballsize);
				sprite.setName(SpriteName.BALL.name());
				sprite.setTexture(texture);
				FixtureDef fixtureDef = new FixtureDef();
				fixtureDef.friction = 0.3f;
				fixtureDef.density = 10f;
				sprite.createDynamicCircle(fixtureDef);
				add(sprite);
				addNew = false;
				count++;
			}
		}		
	};
}