// NOTE: If `NativeMultiHashMap.Clear()` is too slow we can try
// using `NativeHashMap` + entities with dynamic buffers instead.
void ClearMapsIfCreated()
{
if (HasCreatedMaps)
{
ColliderMap.Clear();
TargetMap.Clear();
LargeColliders.Clear();
}
}
protected override void OnUpdate()
{
// Every frame we switch the previous frame's currentCollisions to this frame's
// previous collisions. Then we clear the previous frame's previousCollisions and
// make it this frame's fresh currentCollisions table.
var currentCollisions = m_MapSwitch ? m_FrameCollisions0 : m_FrameCollisions1;
var previousCollisions = m_MapSwitch ? m_FrameCollisions1 : m_FrameCollisions0;
m_MapSwitch = !m_MapSwitch;
currentCollisions.Clear();
m_PossibleCollisions.Clear();
// Despite having UpdateAfter(SpatialPartitionSystem) as attribute we still need to
// combine the dependencies between them to ensure public native collection is ready
// UpdateAfter attribute only handles the IComponentData dependencies and not public native
// collections.
var partitionHandle = JobHandle.CombineDependencies(Dependency, m_PartitionSystem.PartitionJobHandle);
var broadPhase = new BroadPhaseJob
{
PossibleCollisions = m_PossibleCollisions.AsParallelWriter(),
TargetMap = m_PartitionSystem.TargetMap,
}.Schedule(m_PartitionSystem.ColliderMap, 1, partitionHandle);
var narrowPhase = new NarrowPhaseJob
{
CurrentFrameCollisions = currentCollisions.AsParallelWriter(),
PreviousFrameCollisions = previousCollisions,
ColliderNormalFromEntity = GetBufferFromEntity <EdgeNormal>(true),
ColliderVertexFromEntity = GetBufferFromEntity <ColliderVertex>(true),
Positions = GetComponentDataFromEntity <Position2D>(true),
CircleColliderFromEntity = GetComponentDataFromEntity <CircleCollider>(true),
CollisionBufferFromEntity = GetBufferFromEntity <CollisionBuffer>(false),
}.Schedule(m_PossibleCollisions, 1, broadPhase);
CollisionJobHandle = narrowPhase;
}