JobHandle ProduceMeshColliders(
NativeHashMap <Hash128, MeshInput> inputs,
NativeList <float3> vertices,
NativeList <int3> indices,
out NativeHashMap <Hash128, BlobAssetReference <Collider> > meshColliders,
JobHandle inputDeps = default
)
{
// create collider blob assets
var meshCollidersArray =
new NativeArray <KeyValuePair <Hash128, BlobAssetReference <Collider> > >(inputs.Count(), Allocator.TempJob);
const int arrayLength = 5;
var jobHandle = new ProduceMeshCollidersJob
{
InputKeys = inputs.GetKeyArray(Allocator.TempJob),
InputValues = inputs.GetValueArray(Allocator.TempJob),
AllVertices = vertices,
AllIndices = indices,
Output = meshCollidersArray
}.Schedule(inputs.Count(), arrayLength, inputDeps);
// put blob assets into hash map
meshColliders = new NativeHashMap <Hash128, BlobAssetReference <Collider> >(inputs.Count(), Allocator.TempJob);
jobHandle = new ConvertToHashMapJob <Hash128, BlobAssetReference <Collider> >
{
Input = meshCollidersArray,
Output = meshColliders
}.Schedule(jobHandle);
return(jobHandle);
}
protected override void OnUpdate()
{
var shapeQuery = EntityManager.CreateEntityQuery(ComponentType.ReadOnly <T>());
var shapeCount = shapeQuery.CalculateEntityCount();
// A map from entities to arrays of colliders
m_ExtraColliders = new NativeMultiHashMap <ComparableEntity, LeafShapeData>(shapeCount, Allocator.Temp);
// Lists to store input data for deferred convex and mesh jobs
const int defaultPointsPerShape = 1024;
m_ConvexColliderJobs = new NativeList <ConvertConvexColliderInput>(shapeCount, Allocator.TempJob);
m_ConvexColliderPoints = new NativeList <float3>(shapeCount * defaultPointsPerShape, Allocator.TempJob);
m_MeshColliderJobs = new NativeList <ConvertMeshColliderInput>(shapeCount, Allocator.TempJob);
m_MeshColliderVertices = new NativeList <float3>(shapeCount * defaultPointsPerShape, Allocator.TempJob);
m_MeshColliderIndices = new NativeList <int>(shapeCount * defaultPointsPerShape / 2, Allocator.TempJob);
// First pass.
// Convert all shape authoring components into colliders, and collect them for each primary body
Entities.ForEach <T>(ConvertShape);
// Second pass.
// Produce all convex and mesh collider blobs in parallel
const int arrayLength = 5;
var convexColliders =
new NativeArray <KeyValuePair <Entity, LeafShapeData> >(m_ConvexColliderJobs.Length, Allocator.TempJob);
var convexJob = new ProduceConvexCollidersJob
{
InputParameters = m_ConvexColliderJobs,
AllPoints = m_ConvexColliderPoints,
Output = convexColliders
}.Schedule(m_ConvexColliderJobs.Length, arrayLength);
var meshColliders =
new NativeArray <KeyValuePair <Entity, LeafShapeData> >(m_MeshColliderJobs.Length, Allocator.TempJob);
var meshJob = new ProduceMeshCollidersJob
{
InputParameters = m_MeshColliderJobs,
AllVertices = m_MeshColliderVertices,
AllIndices = m_MeshColliderIndices,
Output = meshColliders
}.Schedule(m_MeshColliderJobs.Length, arrayLength);
JobHandle.CombineDependencies(convexJob, meshJob).Complete();
AppendLeafShapeDataToShapeMap(convexColliders, m_ExtraColliders, m_ConvexShapes);
convexColliders.Dispose();
AppendLeafShapeDataToShapeMap(meshColliders, m_ExtraColliders, m_MeshShapes);
meshColliders.Dispose();
// Final pass.
// Assign PhysicsCollider components to rigid bodies, merging multiples into compounds as needed
var keys = m_ExtraColliders.GetUniqueKeyArray(Allocator.Temp);
using (keys.Item1)
{
for (var k = 0; k < keys.Item2; ++k)
{
ComparableEntity body = keys.Item1[k];
var collider = DstEntityManager.HasComponent <PhysicsCollider>(body.Entity)
? DstEntityManager.GetComponentData <PhysicsCollider>(body.Entity)
: new PhysicsCollider();
var children = new NativeList <CompoundCollider.ColliderBlobInstance>(16, Allocator.Temp);
// collect any existing valid shapes
if (collider.IsValid)
{
ColliderType colliderType;
unsafe { colliderType = collider.ColliderPtr->Type; }
// if there is already a compound, add its leaves to the list of children
if (colliderType == ColliderType.Compound)
{
unsafe
{
var existingChildren = ((CompoundCollider *)collider.ColliderPtr)->Children;
for (int i = 0, count = existingChildren.Length; i < count; ++i)
{
children.Add(new CompoundCollider.ColliderBlobInstance
{
Collider = BlobAssetReference <Collider> .Create(
existingChildren[i].Collider,
existingChildren[i].Collider->MemorySize
),
CompoundFromChild = existingChildren[i].CompoundFromChild
});
}
}
}
// otherwise add the single collider to the list of children
else
{
children.Add(
new CompoundCollider.ColliderBlobInstance
{
Collider = collider.Value,
CompoundFromChild = RigidTransform.identity
}
);
}
}
// if collider is already valid, a shape already existed from another system
var isSingleShapeOnPrimaryBody = !collider.IsValid;
// collect all children found by this system
if (m_ExtraColliders.TryGetFirstValue(body, out var child, out var iterator))
{
do
{
children.Add(child.ColliderBlobInstance);
isSingleShapeOnPrimaryBody &= child.LeafEntity.Equals(body.Entity);
} while (m_ExtraColliders.TryGetNextValue(out child, ref iterator));
}
// if there is a single shape on the primary body, use it as-is, otherwise create a compound
// (assume a single leaf should still be a compound so that local offset values in authoring representation are retained)
collider.Value = isSingleShapeOnPrimaryBody
? children[0].Collider
: CompoundCollider.Create(children);
children.Dispose();
DstEntityManager.AddOrSetComponent(body.Entity, collider);
}
}
m_ConvexShapes.Clear();
m_ConvexColliderJobs.Dispose();
m_ConvexColliderPoints.Dispose();
m_MeshShapes.Clear();
m_MeshColliderJobs.Dispose();
m_MeshColliderVertices.Dispose();
m_MeshColliderIndices.Dispose();
}