package org.andengine.extension.physics.box2d;
import org.andengine.engine.handler.IUpdateHandler;
import org.andengine.entity.shape.IAreaShape;
import org.andengine.entity.shape.IShape;
import org.andengine.extension.physics.box2d.util.constants.PhysicsConstants;
import org.andengine.util.math.MathUtils;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Body;
/**
* (c) 2010 Nicolas Gramlich
* (c) 2011 Zynga Inc.
*
* @author Nicolas Gramlich
* @since 18:51:22 - 05.07.2010
*/
public class PhysicsConnector implements IUpdateHandler, PhysicsConstants {
// ===========================================================
// Constants
// ===========================================================
// ===========================================================
// Fields
// ===========================================================
protected final IShape mShape;
protected final Body mBody;
protected final float mShapeHalfBaseWidth;
protected final float mShapeHalfBaseHeight;
protected boolean mUpdatePosition;
protected boolean mUpdateRotation;
protected final float mPixelToMeterRatio;
// ===========================================================
// Constructors
// ===========================================================
public PhysicsConnector(final IAreaShape pAreaShape, final Body pBody) {
this(pAreaShape, pBody, true, true);
}
public PhysicsConnector(final IAreaShape pAreaShape, final Body pBody, final float pPixelToMeterRatio) {
this(pAreaShape, pBody, true, true, pPixelToMeterRatio);
}
public PhysicsConnector(final IAreaShape pAreaShape, final Body pBody, final boolean pUdatePosition, final boolean pUpdateRotation) {
this(pAreaShape, pBody, pUdatePosition, pUpdateRotation, PIXEL_TO_METER_RATIO_DEFAULT);
}
public PhysicsConnector(final IAreaShape pAreaShape, final Body pBody, final boolean pUdatePosition, final boolean pUpdateRotation, final float pPixelToMeterRatio) {
this.mShape = pAreaShape;
this.mBody = pBody;
this.mUpdatePosition = pUdatePosition;
this.mUpdateRotation = pUpdateRotation;
this.mPixelToMeterRatio = pPixelToMeterRatio;
this.mShapeHalfBaseWidth = pAreaShape.getWidth() * 0.5f;
this.mShapeHalfBaseHeight = pAreaShape.getHeight() * 0.5f;
}
// ===========================================================
// Getter & Setter
// ===========================================================
public IShape getShape() {
return this.mShape;
}
public Body getBody() {
return this.mBody;
}
public boolean isUpdatePosition() {
return this.mUpdatePosition;
}
public boolean isUpdateRotation() {
return this.mUpdateRotation;
}
public void setUpdatePosition(final boolean pUpdatePosition) {
this.mUpdatePosition = pUpdatePosition;
}
public void setUpdateRotation(final boolean pUpdateRotation) {
this.mUpdateRotation = pUpdateRotation;
}
// ===========================================================
// Methods for/from SuperClass/Interfaces
// ===========================================================
@Override
public void onUpdate(final float pSecondsElapsed) {
final IShape shape = this.mShape;
final Body body = this.mBody;
if(this.mUpdatePosition) {
final Vector2 position = body.getPosition();
final float pixelToMeterRatio = this.mPixelToMeterRatio;
shape.setPosition(position.x * pixelToMeterRatio - this.mShapeHalfBaseWidth, position.y * pixelToMeterRatio - this.mShapeHalfBaseHeight);
}
if(this.mUpdateRotation) {
final float angle = body.getAngle();
shape.setRotation(MathUtils.radToDeg(angle));
}
}
@Override
public void reset() {
}
// ===========================================================
// Methods
// ===========================================================
// ===========================================================
// Inner and Anonymous Classes
// ===========================================================
}