Example usage for com.badlogic.gdx.physics.box2d Body getWorldCenter

Introduction

In this page you can find the example usage for com.badlogic.gdx.physics.box2d Body getWorldCenter.

Prototype

public Vector2 getWorldCenter() 

Source Link

Usage

From source file:com.agateau.pixelwheels.racer.Racer.java

License:Open Source License

private void applySimplifiedRacerCollision(Racer other) {
    Body body1 = getVehicle().getBody();
    Body body2 = other.getVehicle().getBody();

    mTmp.set(body2.getLinearVelocity()).sub(body1.getLinearVelocity());
    float deltaV = mTmp.len();

    final float k = GamePlay.instance.simplifiedCollisionKFactor
            * MathUtils.clamp(deltaV / GamePlay.instance.simplifiedCollisionMaxDeltaV, 0, 1);
    mTmp.set(body2.getWorldCenter()).sub(body1.getWorldCenter()).nor().scl(k);

    body2.applyLinearImpulse(mTmp, body2.getWorldCenter(), true);
    mTmp.scl(-1);/* w ww. ja  v  a  2  s .c  o  m*/
    body1.applyLinearImpulse(mTmp, body1.getWorldCenter(), true);
}

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From source file:com.agateau.pixelwheels.racer.SpinningComponent.java

License:Open Source License

@Override
public void act(float delta) {
    if (!mActive) {
        return;// ww w . j av a2  s.  co  m
    }
    Body body = mVehicle.getBody();

    // Slow down
    body.applyLinearImpulse(body.getLinearVelocity().nor().scl(-body.getMass()), body.getWorldCenter(), true);

    // Spin
    float nextAngle = body.getAngle() + body.getAngularVelocity() * GameWorld.BOX2D_TIME_STEP;
    if (nextAngle > mTargetBodyAngle) {
        stopSpinning();
        return;
    }

    float totalRotation = mTargetBodyAngle - nextAngle;
    float desiredAngularVelocity = totalRotation / GameWorld.BOX2D_TIME_STEP;
    if (desiredAngularVelocity < 0) {
        desiredAngularVelocity = MathUtils.clamp(desiredAngularVelocity, -MAX_ANGULAR_VELOCITY,
                -MIN_ANGULAR_VELOCITY);
    } else {
        desiredAngularVelocity = MathUtils.clamp(desiredAngularVelocity, MIN_ANGULAR_VELOCITY,
                MAX_ANGULAR_VELOCITY);
    }
    float impulse = body.getInertia() * (desiredAngularVelocity - body.getAngularVelocity());
    body.applyAngularImpulse(impulse, true);
}

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From source file:com.agateau.pixelwheels.utils.Box2DUtils.java

License:Open Source License

public static void applyDrag(Body body, float factor) {
    Vector2 dragForce = body.getLinearVelocity().scl(-factor);
    body.applyForce(dragForce, body.getWorldCenter(), true);
}

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From source file:com.dongbat.game.util.PhysicsUtil.java

/**
 * Apply Linear Impulse to an entity//  w w  w .j  a v  a  2s.  c  o m
 *
 * @param world artemis world
 * @param entity entity that you want to apply
 * @param impulse impulse amount
 */
public static void applyImpulse(com.artemis.World world, Entity entity, Vector2 impulse) {
    Body body = getBody(world, entity);
    body.applyLinearImpulse(impulse, body.getWorldCenter(), true);
}

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From source file:com.dongbat.game.util.PhysicsUtil.java

/**
 * Apply Froce to an entity/*www .  ja v a  2 s.c  om*/
 *
 * @param world artemis world
 * @param entity entity that you want to apply
 * @param force force amount
 */
public static void applyForce(com.artemis.World world, Entity entity, Vector2 force) {
    Body body = getBody(world, entity);
    body.applyForce(force, body.getWorldCenter(), true);
}

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From source file:com.dongbat.invasion.util.PhysicsUtil.java

public static void applyImpulse(Entity entity, Vector2 impulse) {
    Body body = getBody(entity);
    body.applyLinearImpulse(impulse, body.getWorldCenter(), true);
}

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From source file:com.dongbat.invasion.util.PhysicsUtil.java

public static void applyForce(Entity entity, Vector2 force) {
    Body body = getBody(entity);
    body.applyForce(force, body.getWorldCenter(), true);
}

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From source file:com.gmail.emersonmx.asteroids.system.PhysicSystem.java

License:Open Source License

private void processInputEntity(Entity entity, float deltaTime) {
    MovementComponent motion = motionMapper.get(entity);
    PhysicBodyComponent bodyComponent = physicBodyMapper.get(entity);

    Body body = bodyComponent.body;
    body.applyForce(motion.velocity, body.getWorldCenter(), true);
    motion.velocity.setZero();//ww  w.j  a  v a 2s .co m

    body.setTransform(body.getPosition(), motion.direction.angleRad());
}

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From source file:com.hatstick.fireman.physics.Box2DPhysicsWorld.java

License:Apache License

public void jumpBody(Body body, float height) {
    body.applyLinearImpulse(new Vector2(0, height), body.getWorldCenter(), true);
}

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From source file:com.laex.cg2d.render.util.ProtoBufTypeConversionUtil.java

License:Open Source License

/**
 * As distance joint def.//  w w w . j  ava 2 s.c  o  m
 *
 * @param bodyA the body a
 * @param bodyB the body b
 * @param _j the _j
 * @return the distance joint def
 */
public static DistanceJointDef asDistanceJointDef(Body bodyA, Body bodyB, CGJoint _j) {
    DistanceJointDef jdef = new DistanceJointDef();
    jdef.collideConnected = _j.getDistanceJointDef().getCollideConnected();
    jdef.dampingRatio = _j.getDistanceJointDef().getDampingRatio();
    jdef.frequencyHz = _j.getDistanceJointDef().getFreqencyHz();
    jdef.initialize(bodyA, bodyB, bodyA.getWorldCenter(), bodyB.getWorldCenter());

    if (_j.getUseLocalAnchors()) {
        jdef.localAnchorA.set(Vector2Adapter.asVector2(_j.getLocalAnchorA()));
        jdef.localAnchorB.set(Vector2Adapter.asVector2(_j.getLocalAnchorB()));
    }

    return jdef;
}

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