/// <summary>
/// Gets a reference to the properties associated with a body's handle.
/// </summary>
/// <param name="bodyHandle">Body handle to retrieve the properties for.</param>
/// <returns>Reference to properties associated with a body handle.</returns>
public ref T this[BodyHandle bodyHandle]
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get
{
Debug.Assert(simulation.Bodies.BodyExists(bodyHandle));
return(ref bodyData[bodyHandle.Value]);
}
}
public ref T Allocate(BodyHandle bodyHandle)
{
Debug.Assert(simulation.Bodies.BodyExists(bodyHandle), "The body handle should have been allocated in the bodies set before any attempt to create a property for it.");
if (bodyHandle.Value >= bodyData.Length)
{
var targetCount = BufferPool.GetCapacityForCount <T>(simulation.Bodies.HandlePool.HighestPossiblyClaimedId + 1);
Debug.Assert(targetCount > bodyData.Length, "Given what just happened, we must require a resize.");
pool.ResizeToAtLeast(ref bodyData, targetCount, Math.Min(simulation.Bodies.HandlePool.HighestPossiblyClaimedId + 1, bodyData.Length));
}
return(ref bodyData[bodyHandle.Value]);
}
/// <summary>
/// Constructs a new body reference.
/// </summary>
/// <param name="handle">Handle of the body to refer to.</param>
/// <param name="bodies">Collection containing the body.</param>
public BodyReference(BodyHandle handle, Bodies bodies)
{
Handle = handle;
Bodies = bodies;
}
/// <summary>
/// Wakes up a body if it is sleeping. All bodies that can be found by traversing the constraint graph from the body will also be awakened.
/// If the body is already awake, this does nothing.
/// </summary>
/// <param name="bodyHandle">Handle of the body to awaken.</param>
public void AwakenBody(BodyHandle bodyHandle)
{
bodies.ValidateExistingHandle(bodyHandle);
AwakenSet(bodies.HandleToLocation[bodyHandle.Value].SetIndex);
}
public int GetBodyReference(Bodies bodies, BodyHandle bodyHandle)
{
ref var bodyLocation = ref bodies.HandleToLocation[bodyHandle.Value];