void SyncType_PropertyChanged(SyncBase obj)
{
if (obj == m_dummyDisplacement && MyPhysicsBody.IsConstraintValid(m_constraint))
{
SetConstraintPosition(TopBlock, (HkLimitedHingeConstraintData)m_constraint.ConstraintData);
}
}
/// <summary>
/// Reveals this group to game and physics logic.
/// </summary>
public void Reveal()
{
foreach (var entity in Grids)
{
if (entity.Parent == null)
{
MyGamePruningStructure.Add(entity);
}
}
foreach (var body in Grids)
{
var world = body.Physics?.HavokWorld;
if (world == null || body.Physics.IsWelded)
{
continue;
}
try
{
world.LockCriticalOperations();
ActivateRigidBody(body, world, body.Physics.RigidBody);
ActivateRigidBody(body, world, body.Physics.RigidBody2);
foreach (var constraint in body.Physics.Constraints)
{
if (MyPhysicsBody.IsConstraintValid(constraint))
{
world.AddConstraint(constraint);
}
}
}
finally
{
world.UnlockCriticalOperations();
}
}
foreach (var entity in Grids)
{
if (entity.Parent == null)
{
RegisterRecursive(entity);
}
}
void RegisterRecursive(IMyEntity e)
{
MyEntities.RegisterForUpdate((MyEntity)e);
if (e.Hierarchy == null)
{
return;
}
foreach (var child in e.Hierarchy.Children)
{
RegisterRecursive(child.Container.Entity);
}
}
void ActivateRigidBody(MyCubeGrid grid, HkWorld world, HkRigidBody body)
{
if (body == null)
{
return;
}
// make it dynamic
if (body.GetMotionType() != HkMotionType.Dynamic && !grid.IsStatic)
{
body.UpdateMotionType(HkMotionType.Dynamic);
}
// wake it up
body.Activate();
// restore velocity?
}
}
/// <summary>
/// Conceals this group from game and physics logic.
/// </summary>
public void Conceal()
{
foreach (var body in Grids)
{
if (body.Parent == null)
{
UnregisterRecursive(body);
}
}
foreach (var body in Grids)
{
var world = body.Physics?.HavokWorld;
if (world == null || body.Physics.IsWelded)
{
continue;
}
try
{
world.LockCriticalOperations();
foreach (var constraint in body.Physics.Constraints)
{
if (MyPhysicsBody.IsConstraintValid(constraint))
{
world.RemoveConstraint(constraint);
}
}
DeactivateRigidBody(body, world, body.Physics.RigidBody);
DeactivateRigidBody(body, world, body.Physics.RigidBody2);
}
finally
{
world.UnlockCriticalOperations();
}
}
foreach (var entity in Grids)
{
if (entity.Parent == null)
{
MyGamePruningStructure.Remove(entity);
}
}
void DeactivateRigidBody(MyCubeGrid grid, HkWorld world, HkRigidBody body)
{
if (world == null || body == null)
{
return;
}
// stop it
body.LinearVelocity = Vector3.Zero;
body.AngularVelocity = Vector3.Zero;
// put it to sleep
body.Deactivate();
// make it static
if (body.GetMotionType() != HkMotionType.Fixed)
{
body.UpdateMotionType(HkMotionType.Fixed);
}
// Remove from collision
// Cache velocity?
}
void UnregisterRecursive(IMyEntity e)
{
MyEntities.UnregisterForUpdate((MyEntity)e);
if (e.Hierarchy == null)
{
return;
}
foreach (var child in e.Hierarchy.Children)
{
UnregisterRecursive(child.Container.Entity);
}
}
}