private void CreateHandFixture(Hand hand)
{
Vector2 handPos = new Vector2(hand.Position.X, hand.Position.Y);
Body handBody = BodyFactory.CreateCircle(world, handSize, 1f, handPos / MeterInPixels);
handBody.BodyType = BodyType.Dynamic;
// Check what hands should be colliding with
if (handCollisionsEnabled)
{
handBody.OnCollision += HandCollisionCheckDelegate;
}
else
{
handBody.OnCollision += HandCollisionFalseDelegate;
}
FixedMouseJoint handJoint = new FixedMouseJoint(handBody, handBody.Position);
handJoint.MaxForce = 10000f;
world.AddJoint(handJoint);
WorldEntity handEntity = new WorldEntity(handBody, handJoint, WorldEntity.EntityType.Hand);
handBodies.Add(hand, handEntity);
entities.Add(handBody, handEntity);
}
private void RemoveHandFixture(Hand hand)
{
WorldEntity bodyEntity = handBodies[hand];
world.RemoveJoint(bodyEntity.Joint);
world.RemoveBody(bodyEntity.Body);
handBodies.Remove(hand);
entities.Remove(bodyEntity.Body);
}
public void UpdateHandPositions(Hand[] hands)
{
// Go through the hands array looking for new hands, if we find any, register them
foreach (Hand hand in hands)
{
if (!handBodies.ContainsKey(hand))
{
this.CreateHandFixture(hand);
}
}
// Deregister any hands which aren't there any more
List<Hand> _removals = new List<Hand>(handBodies.Keys.Except(hands));
foreach (Hand hand in _removals)
{
this.RemoveHandFixture(hand);
}
// Move joint parts
foreach (KeyValuePair<Hand, WorldEntity> handBody in handBodies)
{
handBody.Value.Joint.WorldAnchorB = new Vector2(handBody.Key.Position.X, handBody.Key.Position.Y) / MeterInPixels;
}
}