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Refactor Physics to separate PhysicsBackend

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#673
This commit is contained in:
Wojtek Figat
2022-01-20 23:28:43 +01:00
parent cf1af53ab8
commit 427846f73b
66 changed files with 4803 additions and 4327 deletions
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34
Source/Engine/Physics/Colliders/SplineCollider.cpp
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@@ -6,16 +6,13 @@
#include "Engine/Core/Math/Ray.h"
#include "Engine/Level/Actors/Spline.h"
#include "Engine/Serialization/Serialization.h"
#include "Engine/Physics/Utilities.h"
#include "Engine/Physics/Physics.h"
#include "Engine/Physics/PhysicsBackend.h"
#include "Engine/Physics/PhysicsScene.h"
#include "Engine/Profiler/ProfilerCPU.h"
#if COMPILE_WITH_PHYSICS_COOKING
#include "Engine/Physics/CollisionCooking.h"
#include <ThirdParty/PhysX/PxPhysics.h>
#include <ThirdParty/PhysX/extensions/PxDefaultStreams.h>
#endif
#include <ThirdParty/PhysX/geometry/PxTriangleMesh.h>
SplineCollider::SplineCollider(const SpawnParams& params)
: Collider(params)
@@ -173,7 +170,7 @@ void SplineCollider::EndPlay()
// Cleanup
if (_triangleMesh)
{
GetPhysicsScene()->RemoveObject(_triangleMesh);
PhysicsBackend::DestroyObject(_triangleMesh);
_triangleMesh = nullptr;
}
}
@@ -183,18 +180,17 @@ void SplineCollider::UpdateBounds()
// Unused as bounds are updated during collision building
}
void SplineCollider::GetGeometry(PxGeometryHolder& geometry)
void SplineCollider::GetGeometry(CollisionShape& collision)
{
// Reset bounds
_box = BoundingBox(_transform.Translation);
BoundingSphere::FromBox(_box, _sphere);
const float minSize = 0.001f;
collision.SetSphere(minSize);
// Skip if sth is missing
if (!_spline || !IsActiveInHierarchy() || _spline->GetSplinePointsCount() < 2 || !CollisionData || !CollisionData->IsLoaded())
{
geometry.storeAny(PxSphereGeometry(0.001f));
return;
}
PROFILE_CPU();
// Extract collision geometry
@@ -203,10 +199,7 @@ void SplineCollider::GetGeometry(PxGeometryHolder& geometry)
Array<int32> collisionIndices;
CollisionData->ExtractGeometry(collisionVertices, collisionIndices);
if (collisionIndices.IsEmpty())
{
geometry.storeAny(PxSphereGeometry(0.001f));
return;
}
// Apply local mesh transformation
if (!_preTransform.IsIdentity())
@@ -288,7 +281,6 @@ void SplineCollider::GetGeometry(PxGeometryHolder& geometry)
// Prepare scale
Vector3 scale = _cachedScale;
scale.Absolute();
const float minSize = 0.001f;
scale = Vector3::Max(scale, minSize);
// TODO: add support for cooking collision for static splines in editor and reusing it in game
@@ -307,16 +299,15 @@ void SplineCollider::GetGeometry(PxGeometryHolder& geometry)
// Create triangle mesh
if (_triangleMesh)
{
GetPhysicsScene()->RemoveObject(_triangleMesh);
PhysicsBackend::DestroyObject(_triangleMesh);
_triangleMesh = nullptr;
}
PxDefaultMemoryInputData input(collisionData.Get(), collisionData.Length());
// TODO: try using getVerticesForModification for dynamic triangle mesh vertices updating when changing curve in the editor
_triangleMesh = Physics::GetPhysics()->createTriangleMesh(input);
BoundingBox localBounds;
_triangleMesh = PhysicsBackend::CreateTriangleMesh(collisionData.Get(), collisionData.Length(), localBounds);
if (!_triangleMesh)
{
LOG(Error, "Failed to create triangle mesh from collision data of {0}.", ToString());
geometry.storeAny(PxSphereGeometry(0.001f));
return;
}
@@ -325,17 +316,13 @@ void SplineCollider::GetGeometry(PxGeometryHolder& geometry)
_vertexBuffer[i] = colliderTransform.LocalToWorld(_vertexBuffer[i]);
// Update bounds
_box = P2C(_triangleMesh->getLocalBounds());
Matrix splineWorld;
colliderTransform.GetWorld(splineWorld);
BoundingBox::Transform(_box, splineWorld, _box);
BoundingBox::Transform(localBounds, splineWorld, _box);
BoundingSphere::FromBox(_box, _sphere);
// Setup geometry
PxTriangleMeshGeometry triangleMesh;
triangleMesh.scale.scale = C2P(scale);
triangleMesh.triangleMesh = _triangleMesh;
geometry.storeAny(triangleMesh);
collision.SetTriangleMesh(_triangleMesh, scale.Raw);
// TODO: find a way of releasing _vertexBuffer and _indexBuffer for static colliders (note: ExtractGeometry usage for navmesh generation at runtime)
@@ -344,5 +331,4 @@ void SplineCollider::GetGeometry(PxGeometryHolder& geometry)
#endif
LOG(Error, "Cannot build collision data for {0} due to runtime collision cooking diabled.", ToString());
geometry.storeAny(PxSphereGeometry(0.001f));
}