Example usage for com.badlogic.gdx.physics.box2d.joints MouseJoint getTarget

Introduction

In this page you can find the example usage for com.badlogic.gdx.physics.box2d.joints MouseJoint getTarget.

Prototype

public Vector2 getTarget() 

Source Link

Usage

From source file:org.ams.testapps.paintandphysics.cardhouse.CardMover.java

License:Open Source License

@Override
public boolean touchDown(int screenX, int screenY, int pointer, int button) {
    Vector2 touchCoordinates = CoordinateHelper.getWorldCoordinates(camera, screenX, screenY);

    // check if touch is for turning

    boolean onInner = turnCircleInner.isOnTurnCircle(touchCoordinates);
    boolean onOuter = turnCircleOuter.isOnTurnCircle(touchCoordinates);

    turning = onInner || onOuter;/*from   w w  w .  j  a  va  2 s  .  c om*/

    if (turning) {
        roundedTurning = onInner;
        // start turning routine

        if (debug)
            debug("Turning card.");
        MouseJoint mouseJoint = mouseJointStorage.get(mouseJointStorage.size - 2);
        MouseJoint auxMouseJoint = mouseJointStorage.get(mouseJointStorage.size - 1);

        Vector2 v = new Vector2(auxMouseJoint.getTarget()).sub(mouseJoint.getTarget());
        float a = v.angleRad();

        Vector2 w = new Vector2(touchCoordinates).sub(mouseJoint.getTarget());
        float b = w.angleRad();

        angleOffset = b - a;

        return true;
    }

    // find card to move
    Thing touchedThing = WorldUtil.getClosestThingIntersectingCircle(world.things, touchCoordinates.x,
            touchCoordinates.y, Util.getTouchRadius(camera.zoom), filter);

    PPPolygon card = null;
    if (touchedThing == null && turnCircleInner.isInsideTurnCircle(touchCoordinates)) {
        card = this.activeCard;
    } else if (touchedThing != null && touchedThing.getBody().isActive()) {
        card = (PPPolygon) touchedThing.getUserData();
    }

    // cancel if no card
    if (card == null) {
        setActiveCard(null);
        return false;

    }

    if (debug)
        debug("Moving card.");

    boolean directTouch = touchedThing != null;
    boolean newCard = this.activeCard != card;

    if (newCard || directTouch) {
        // prepare to move card with fresh mouse joints

        resetColors();
        setActiveCard(card);

        // make new mouse joints
        destroyMouseJoints(card.getPhysicsThing());
        MouseJoint mouseJoint = createMouseJoint(touchCoordinates);
        mouseJointStorage.add(mouseJoint);
        mouseJointStorage.add(createAuxMouseJoint(touchCoordinates));

        // move turn circle
        updateTurnCirclePos(mouseJoint.getTarget());

        // remove oldest joints
        enforceStorageLimit();

        // let listeners know which card is added and which was removed
        notifyListenersAddedRemoved();

        // force it to move
        Body body = card.getPhysicsThing().getBody();
        body.setAwake(true);
        body.setActive(true);

        // reset some stuff
        offset.set(0, 0);
        angleWhenRotating = 0;

        angleAtRotateStart = activeCard.getPhysicsThing().getBody().getAngle();

    } else if (turnCircleInner.isInsideTurnCircle(touchCoordinates)) {
        // just update offsets for current card
        offset.set(touchCoordinates).sub(mouseJointStorage.get(mouseJointStorage.size - 2).getTarget());

    }

    return true;
}

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From source file:org.ams.testapps.paintandphysics.cardhouse.CardMover.java

License:Open Source License

@Override
public boolean touchDragged(int screenX, int screenY, int pointer) {
    if (activeCard == null)
        return false;
    if (mouseJointStorage.size < 2)
        return false;

    Vector2 worldCoordinates = CoordinateHelper.getWorldCoordinates(camera, screenX, screenY);

    MouseJoint mouseJoint = mouseJointStorage.get(mouseJointStorage.size - 2);
    MouseJoint auxMouseJoint = mouseJointStorage.get(mouseJointStorage.size - 1);

    if (turning) {
        Vector2 v = new Vector2(worldCoordinates).sub(mouseJoint.getTarget());
        float a = v.angleRad();

        angleWhenRotating = a - angleOffset;

        if (roundedTurning) {
            // rounding
            float round = angleRounding * MathUtils.degreesToRadians;
            angleWhenRotating = Util.roundToNearestN(angleWhenRotating, round);
            float f = angleAtRotateStart % round;
            angleWhenRotating -= f;//  ww  w  . ja  v a 2 s  .  co  m
        }

        auxMouseJoint.setTarget(
                new Vector2(auxMouseJointDistance, 0).rotateRad(angleWhenRotating).add(mouseJoint.getTarget()));

    } else {

        if (turnCircleInner.isOutsideTurnCircle(worldCoordinates))
            return false;

        mouseJoint.setTarget(new Vector2(worldCoordinates).sub(offset));

        auxMouseJoint.setTarget(new Vector2(auxMouseJointDistance, 0).rotateRad(angleWhenRotating)
                .add(worldCoordinates).sub(offset));

        updateTurnCirclePos(mouseJoint.getTarget());
    }

    return true;
}

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