Java WeldJointDef类代码示例

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
private Player createPlayer(World world, Cable cable) {
	CircleShape playerShape = new CircleShape();
	playerShape.setRadius(Constants.PLAYER_WIDTH / 2);
	PhysicsModel playerModel = new PhysicsModel(world, 0, 5, playerShape,
			true, BodyDef.BodyType.DynamicBody, 0.1f);
	Player player = new Player(playerModel);

	RevoluteJointDef jointDef = new RevoluteJointDef();
	jointDef.bodyA = player.getBody();
	jointDef.bodyB = cable.getBodyList().get(0);
	world.createJoint(jointDef);

	WeldJointDef weldJointDef = new WeldJointDef();
	weldJointDef.bodyA = player.getBody();
	weldJointDef.bodyB = cable.getBodyList().get(
			cable.getBodyList().size() - 1);
	weldJointDef.localAnchorA.set(-30, 8);
	world.createJoint(weldJointDef);

	return player;
}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
@Override
public void render() {
    super.render();
    //game.getPhysics().clearForces();

    for (WeldJointDef jointDef : flyingDartCollisionRule.jointDefs) {
        Log.debug(tag, "CreateJoint");
        physics.createJoint(jointDef);

    }
    flyingDartCollisionRule.jointDefs.clear();

    for (Joint joint : flyingDartCollisionRule.destroyJoints) {
        Log.debug(tag, "DestroyJoint");
        physics.destroyJoint(joint);

    }
    flyingDartCollisionRule.destroyJoints.clear();

}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
public JointSerializer(RubeScene scene,Json _json)
{
	this.scene = scene;
	_json.setSerializer(RevoluteJointDef.class, 	new RevoluteJointDefSerializer());
	_json.setSerializer(PrismaticJointDef.class, 	new PrismaticJointDefSerializer());
	_json.setSerializer(PulleyJointDef.class, 		new PulleyJointDefSerializer());
	_json.setSerializer(WeldJointDef.class, 		new WeldJointDefSerializer());
	_json.setSerializer(FrictionJointDef.class, 	new FrictionJointDefSerializer());
	_json.setSerializer(WheelJointDef.class, 		new WheelJointDefSerializer());
	_json.setSerializer(RopeJointDef.class, 		new RopeJointDefSerializer());
	_json.setSerializer(DistanceJointDef.class, 	new DistanceJointDefSerializer());
	_json.setSerializer(GearJointDef.class, 		new GearJointDefSerializer());
	
	mouseJointDefSerializer = new MouseJointDefSerializer();
	
	_json.setSerializer(MouseJointDef.class, 		mouseJointDefSerializer);
}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
@SuppressWarnings("rawtypes")
@Override
public WeldJointDef read(Json json, JsonValue jsonData, Class type)
{	
	WeldJointDef defaults = RubeDefaults.Joint.weldDef;
	
	WeldJointDef def = new WeldJointDef();
	
	Vector2 anchorA = json.readValue("anchorA", Vector2.class, defaults.localAnchorA, jsonData);
	Vector2 anchorB = json.readValue("anchorB", Vector2.class, defaults.localAnchorB, jsonData);
	
	if(anchorA != null && anchorB != null)
	{
		def.localAnchorA.set(anchorA);
		def.localAnchorB.set(anchorB);
		def.referenceAngle 	= json.readValue("refAngle", float.class, defaults.referenceAngle, jsonData);
	}
	
	return def; 
}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
public Joint createWeldJoint(Body b1, Body b2, Vector2 anchor)
{
	WeldJointDef wjd = new WeldJointDef();
	
	wjd.bodyA = b1;
	wjd.bodyB = b2;
	wjd.collideConnected = false;
	wjd.localAnchorA.set(Vector2.Zero);
	wjd.localAnchorB.set(anchor);
	wjd.referenceAngle = 0.0f;
	
	return world.createJoint(wjd);
}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
/**
 * Creates the joint.
 * @return	This joint. Handy for chaining stuff together.
 */
@Override
public B2FlxWeldJoint create()
{
	((WeldJointDef)jointDef).initialize(bodyA, bodyB, anchorA);
	joint = B2FlxB.world.createJoint(jointDef);
	return this;
}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
/**
 * Create a weld joint between this actor and some other actor, to force the actors to stick
 * together.
 *
 * @param other  The actor that will be fused to this actor
 * @param otherX The X coordinate (relative to center) where joint fuses to the other actor
 * @param otherY The Y coordinate (relative to center) where joint fuses to the other actor
 * @param localX The X coordinate (relative to center) where joint fuses to this actor
 * @param localY The Y coordinate (relative to center) where joint fuses to this actor
 * @param angle  The angle between the actors
 */
public void setWeldJoint(WorldActor other, float otherX, float otherY, float localX,
                         float localY, float angle) {
    WeldJointDef w = new WeldJointDef();
    w.bodyA = mBody;
    w.bodyB = other.mBody;
    w.localAnchorA.set(localX, localY);
    w.localAnchorB.set(otherX, otherY);
    w.referenceAngle = angle;
    w.collideConnected = false;
    mExplicitWeldJoint = (WeldJoint) mScene.mWorld.createJoint(w);
}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
/**
 * When a hero collides with a "sticky" obstacle, this figures out what to do
 *
 * @param sticky  The sticky actor... it should always be an obstacle for now
 * @param other   The other actor... it should always be a hero for now
 * @param contact A description of the contact event
 */
private void handleSticky(final WorldActor sticky, final WorldActor other, Contact contact) {
    // don't create a joint if we've already got one
    if (other.mDJoint != null)
        return;
    // don't create a joint if we're supposed to wait
    if (System.currentTimeMillis() < other.mStickyDelay)
        return;
    // go sticky obstacles... only do something if we're hitting the
    // obstacle from the correct direction
    if ((sticky.mIsSticky[0] && other.getYPosition() >= sticky.getYPosition() + sticky.mSize.y)
            || (sticky.mIsSticky[1] && other.getXPosition() + other.mSize.x <= sticky.getXPosition())
            || (sticky.mIsSticky[3] && other.getXPosition() >= sticky.getXPosition() + sticky.mSize.x)
            || (sticky.mIsSticky[2] && other.getYPosition() + other.mSize.y <= sticky.getYPosition())) {
        // create distance and weld joints... somehow, the combination is needed to get this to
        // work. Note that this function runs during the box2d step, so we need to make the
        // joint in a callback that runs later
        final Vector2 v = contact.getWorldManifold().getPoints()[0];
        mOneTimeEvents.add(new LolAction() {
            @Override
            public void go() {
                other.mBody.setLinearVelocity(0, 0);
                DistanceJointDef d = new DistanceJointDef();
                d.initialize(sticky.mBody, other.mBody, v, v);
                d.collideConnected = true;
                other.mDJoint = (DistanceJoint) mWorld.createJoint(d);
                WeldJointDef w = new WeldJointDef();
                w.initialize(sticky.mBody, other.mBody, v);
                w.collideConnected = true;
                other.mWJoint = (WeldJoint) mWorld.createJoint(w);
            }
        });
    }
}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
@Override
protected void processEntity(Entity entity, float deltaTime) {
	PhysicsComponent physics = App.engine.mappers.physics.get(entity);
	HealthComponent health = App.engine.mappers.health.get(entity);
	StickyComponent sticky = App.engine.mappers.sticky.get(entity);
	
	float collisionForce = physics.getCollisionNormal();
	
	//Sticky projectiles
	if (sticky != null && sticky.enabled){
		Fixture stickyFixture = physics.getFixture(sticky.fixtureName);
		if (stickyFixture != null){
			
			boolean colliding = getContactCount(stickyFixture) > 0;
			
			Array<Fixture> touchingFixtures = getFixturesTouching(stickyFixture);
			for (Fixture f : touchingFixtures){
				if (f.isSensor()) colliding = false;
				else {
					WeldJointDef jd = new WeldJointDef();
					Body b1 = f.getBody(),
					     b2 = stickyFixture.getBody();
					jd.initialize(b1,b2,b2.getWorldCenter());
					world.createJoint(jd);
					sticky.enabled = false;
					break;
				}
			}
			
			if (!colliding)	physics.setRotation(physics.getLinearVelocity().angle());

		}
	}
	
	//Collision Damage
	if (health != null && collisionForce >= health.collisionDamageThreshold){
		float dmg = collisionForce - health.collisionDamageThreshold;
		App.engine.systems.damage.dealDamage(entity,dmg);
		logger.debug(String.format("Collision damage: Entity#%d ; Force=%f ; Dmg=%f",
									entity.getId(),collisionForce,dmg));
	}
	physics.clearCollisionNormal();
	
	/*
	//Anything outside of the world bounds is destroyed
	if (!App.engine.entityBounds.contains(physics.getPosition()) &&
			entity != App.engine.getLevel().getEntity()){
		logger.debug("Destroy Entity #" + entity.getId() + ": outside of world bounds.");
		App.engine.removeEntity(physics.ownerEntity);
	}
	*/

}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
@Override
public void reset() {
    jointDef = new WeldJointDef();

}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
private long createProperJoint(JointDef paramJointDef)
{
  if (paramJointDef.type == JointDef.JointType.DistanceJoint)
  {
    DistanceJointDef localDistanceJointDef = (DistanceJointDef)paramJointDef;
    return jniCreateDistanceJoint(this.addr, localDistanceJointDef.bodyA.addr, localDistanceJointDef.bodyB.addr, localDistanceJointDef.collideConnected, localDistanceJointDef.localAnchorA.x, localDistanceJointDef.localAnchorA.y, localDistanceJointDef.localAnchorB.x, localDistanceJointDef.localAnchorB.y, localDistanceJointDef.length, localDistanceJointDef.frequencyHz, localDistanceJointDef.dampingRatio);
  }
  if (paramJointDef.type == JointDef.JointType.FrictionJoint)
  {
    FrictionJointDef localFrictionJointDef = (FrictionJointDef)paramJointDef;
    return jniCreateFrictionJoint(this.addr, localFrictionJointDef.bodyA.addr, localFrictionJointDef.bodyB.addr, localFrictionJointDef.collideConnected, localFrictionJointDef.localAnchorA.x, localFrictionJointDef.localAnchorA.y, localFrictionJointDef.localAnchorB.x, localFrictionJointDef.localAnchorB.y, localFrictionJointDef.maxForce, localFrictionJointDef.maxTorque);
  }
  if (paramJointDef.type == JointDef.JointType.GearJoint)
  {
    GearJointDef localGearJointDef = (GearJointDef)paramJointDef;
    return jniCreateGearJoint(this.addr, localGearJointDef.bodyA.addr, localGearJointDef.bodyB.addr, localGearJointDef.collideConnected, localGearJointDef.joint1.addr, localGearJointDef.joint2.addr, localGearJointDef.ratio);
  }
  if (paramJointDef.type == JointDef.JointType.MouseJoint)
  {
    MouseJointDef localMouseJointDef = (MouseJointDef)paramJointDef;
    return jniCreateMouseJoint(this.addr, localMouseJointDef.bodyA.addr, localMouseJointDef.bodyB.addr, localMouseJointDef.collideConnected, localMouseJointDef.target.x, localMouseJointDef.target.y, localMouseJointDef.maxForce, localMouseJointDef.frequencyHz, localMouseJointDef.dampingRatio);
  }
  if (paramJointDef.type == JointDef.JointType.PrismaticJoint)
  {
    PrismaticJointDef localPrismaticJointDef = (PrismaticJointDef)paramJointDef;
    return jniCreatePrismaticJoint(this.addr, localPrismaticJointDef.bodyA.addr, localPrismaticJointDef.bodyB.addr, localPrismaticJointDef.collideConnected, localPrismaticJointDef.localAnchorA.x, localPrismaticJointDef.localAnchorA.y, localPrismaticJointDef.localAnchorB.x, localPrismaticJointDef.localAnchorB.y, localPrismaticJointDef.localAxisA.x, localPrismaticJointDef.localAxisA.y, localPrismaticJointDef.referenceAngle, localPrismaticJointDef.enableLimit, localPrismaticJointDef.lowerTranslation, localPrismaticJointDef.upperTranslation, localPrismaticJointDef.enableMotor, localPrismaticJointDef.maxMotorForce, localPrismaticJointDef.motorSpeed);
  }
  if (paramJointDef.type == JointDef.JointType.PulleyJoint)
  {
    PulleyJointDef localPulleyJointDef = (PulleyJointDef)paramJointDef;
    return jniCreatePulleyJoint(this.addr, localPulleyJointDef.bodyA.addr, localPulleyJointDef.bodyB.addr, localPulleyJointDef.collideConnected, localPulleyJointDef.groundAnchorA.x, localPulleyJointDef.groundAnchorA.y, localPulleyJointDef.groundAnchorB.x, localPulleyJointDef.groundAnchorB.y, localPulleyJointDef.localAnchorA.x, localPulleyJointDef.localAnchorA.y, localPulleyJointDef.localAnchorB.x, localPulleyJointDef.localAnchorB.y, localPulleyJointDef.lengthA, localPulleyJointDef.lengthB, localPulleyJointDef.ratio);
  }
  if (paramJointDef.type == JointDef.JointType.RevoluteJoint)
  {
    RevoluteJointDef localRevoluteJointDef = (RevoluteJointDef)paramJointDef;
    return jniCreateRevoluteJoint(this.addr, localRevoluteJointDef.bodyA.addr, localRevoluteJointDef.bodyB.addr, localRevoluteJointDef.collideConnected, localRevoluteJointDef.localAnchorA.x, localRevoluteJointDef.localAnchorA.y, localRevoluteJointDef.localAnchorB.x, localRevoluteJointDef.localAnchorB.y, localRevoluteJointDef.referenceAngle, localRevoluteJointDef.enableLimit, localRevoluteJointDef.lowerAngle, localRevoluteJointDef.upperAngle, localRevoluteJointDef.enableMotor, localRevoluteJointDef.motorSpeed, localRevoluteJointDef.maxMotorTorque);
  }
  if (paramJointDef.type == JointDef.JointType.WeldJoint)
  {
    WeldJointDef localWeldJointDef = (WeldJointDef)paramJointDef;
    return jniCreateWeldJoint(this.addr, localWeldJointDef.bodyA.addr, localWeldJointDef.bodyB.addr, localWeldJointDef.collideConnected, localWeldJointDef.localAnchorA.x, localWeldJointDef.localAnchorA.y, localWeldJointDef.localAnchorB.x, localWeldJointDef.localAnchorB.y, localWeldJointDef.referenceAngle);
  }
  if (paramJointDef.type == JointDef.JointType.RopeJoint)
  {
    RopeJointDef localRopeJointDef = (RopeJointDef)paramJointDef;
    return jniCreateRopeJoint(this.addr, localRopeJointDef.bodyA.addr, localRopeJointDef.bodyB.addr, localRopeJointDef.collideConnected, localRopeJointDef.localAnchorA.x, localRopeJointDef.localAnchorA.y, localRopeJointDef.localAnchorB.x, localRopeJointDef.localAnchorB.y, localRopeJointDef.maxLength);
  }
  if (paramJointDef.type == JointDef.JointType.WheelJoint)
  {
    WheelJointDef localWheelJointDef = (WheelJointDef)paramJointDef;
    return jniCreateWheelJoint(this.addr, localWheelJointDef.bodyA.addr, localWheelJointDef.bodyB.addr, localWheelJointDef.collideConnected, localWheelJointDef.localAnchorA.x, localWheelJointDef.localAnchorA.y, localWheelJointDef.localAnchorB.x, localWheelJointDef.localAnchorB.y, localWheelJointDef.localAxisA.x, localWheelJointDef.localAxisA.y, localWheelJointDef.enableMotor, localWheelJointDef.maxMotorTorque, localWheelJointDef.motorSpeed, localWheelJointDef.frequencyHz, localWheelJointDef.dampingRatio);
  }
  return 0L;
}
 

import com.badlogic.gdx.physics.box2d.joints.WeldJointDef; //导入依赖的package包/类
/**
 * Creates a weld joint.
 * @param spriteA
 * @param spriteB
 * @param jointDef
 */
public B2FlxWeldJoint(B2FlxShape spriteA, B2FlxShape spriteB, WeldJointDef jointDef)
{
	super(spriteA, spriteB, jointDef);
}