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Fix ConcavePolygonShape3D always enabling backface_collision when using Jolt Physics

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(cherry picked from commit 3603a5a9dd)
This commit is contained in:
Mikael Hermansson
2025-03-18 12:17:04 +01:00
committed by Rémi Verschelde
parent 8813063847
commit 21501dc4b4
2 changed files with 12 additions and 5 deletions
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15
modules/jolt_physics/shapes/jolt_custom_double_sided_shape.cpp
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@@ -49,7 +49,9 @@ void collide_double_sided_vs_shape(const JPH::Shape *p_shape1, const JPH::Shape
const JoltCustomDoubleSidedShape *shape1 = static_cast<const JoltCustomDoubleSidedShape *>(p_shape1); const JoltCustomDoubleSidedShape *shape1 = static_cast<const JoltCustomDoubleSidedShape *>(p_shape1);
JPH::CollideShapeSettings new_collide_shape_settings = p_collide_shape_settings; JPH::CollideShapeSettings new_collide_shape_settings = p_collide_shape_settings;
new_collide_shape_settings.mBackFaceMode = JPH::EBackFaceMode::CollideWithBackFaces; if (shape1->should_collide_with_back_faces()) {
new_collide_shape_settings.mBackFaceMode = JPH::EBackFaceMode::CollideWithBackFaces;
}
JPH::CollisionDispatch::sCollideShapeVsShape(shape1->GetInnerShape(), p_shape2, p_scale1, p_scale2, p_center_of_mass_transform1, p_center_of_mass_transform2, p_sub_shape_id_creator1, p_sub_shape_id_creator2, new_collide_shape_settings, p_collector, p_shape_filter); JPH::CollisionDispatch::sCollideShapeVsShape(shape1->GetInnerShape(), p_shape2, p_scale1, p_scale2, p_center_of_mass_transform1, p_center_of_mass_transform2, p_sub_shape_id_creator1, p_sub_shape_id_creator2, new_collide_shape_settings, p_collector, p_shape_filter);
} }
@@ -60,7 +62,9 @@ void collide_shape_vs_double_sided(const JPH::Shape *p_shape1, const JPH::Shape
const JoltCustomDoubleSidedShape *shape2 = static_cast<const JoltCustomDoubleSidedShape *>(p_shape2); const JoltCustomDoubleSidedShape *shape2 = static_cast<const JoltCustomDoubleSidedShape *>(p_shape2);
JPH::CollideShapeSettings new_collide_shape_settings = p_collide_shape_settings; JPH::CollideShapeSettings new_collide_shape_settings = p_collide_shape_settings;
new_collide_shape_settings.mBackFaceMode = JPH::EBackFaceMode::CollideWithBackFaces; if (shape2->should_collide_with_back_faces()) {
new_collide_shape_settings.mBackFaceMode = JPH::EBackFaceMode::CollideWithBackFaces;
}
JPH::CollisionDispatch::sCollideShapeVsShape(p_shape1, shape2->GetInnerShape(), p_scale1, p_scale2, p_center_of_mass_transform1, p_center_of_mass_transform2, p_sub_shape_id_creator1, p_sub_shape_id_creator2, new_collide_shape_settings, p_collector, p_shape_filter); JPH::CollisionDispatch::sCollideShapeVsShape(p_shape1, shape2->GetInnerShape(), p_scale1, p_scale2, p_center_of_mass_transform1, p_center_of_mass_transform2, p_sub_shape_id_creator1, p_sub_shape_id_creator2, new_collide_shape_settings, p_collector, p_shape_filter);
} }
@@ -71,7 +75,9 @@ void cast_shape_vs_double_sided(const JPH::ShapeCast &p_shape_cast, const JPH::S
const JoltCustomDoubleSidedShape *shape = static_cast<const JoltCustomDoubleSidedShape *>(p_shape); const JoltCustomDoubleSidedShape *shape = static_cast<const JoltCustomDoubleSidedShape *>(p_shape);
JPH::ShapeCastSettings new_shape_cast_settings = p_shape_cast_settings; JPH::ShapeCastSettings new_shape_cast_settings = p_shape_cast_settings;
new_shape_cast_settings.mBackFaceModeTriangles = JPH::EBackFaceMode::CollideWithBackFaces; if (shape->should_collide_with_back_faces()) {
new_shape_cast_settings.mBackFaceModeTriangles = JPH::EBackFaceMode::CollideWithBackFaces;
}
JPH::CollisionDispatch::sCastShapeVsShapeLocalSpace(p_shape_cast, new_shape_cast_settings, shape->GetInnerShape(), p_scale, p_shape_filter, p_center_of_mass_transform2, p_sub_shape_id_creator1, p_sub_shape_id_creator2, p_collector); JPH::CollisionDispatch::sCastShapeVsShapeLocalSpace(p_shape_cast, new_shape_cast_settings, shape->GetInnerShape(), p_scale, p_shape_filter, p_center_of_mass_transform2, p_sub_shape_id_creator1, p_sub_shape_id_creator2, p_collector);
} }
@@ -104,8 +110,7 @@ void JoltCustomDoubleSidedShape::register_type() {
void JoltCustomDoubleSidedShape::CastRay(const JPH::RayCast &p_ray, const JPH::RayCastSettings &p_ray_cast_settings, const JPH::SubShapeIDCreator &p_sub_shape_id_creator, JPH::CastRayCollector &p_collector, const JPH::ShapeFilter &p_shape_filter) const { void JoltCustomDoubleSidedShape::CastRay(const JPH::RayCast &p_ray, const JPH::RayCastSettings &p_ray_cast_settings, const JPH::SubShapeIDCreator &p_sub_shape_id_creator, JPH::CastRayCollector &p_collector, const JPH::ShapeFilter &p_shape_filter) const {
JPH::RayCastSettings new_ray_cast_settings = p_ray_cast_settings; JPH::RayCastSettings new_ray_cast_settings = p_ray_cast_settings;
if (!should_collide_with_back_faces()) {
if (!back_face_collision) {
new_ray_cast_settings.SetBackFaceMode(JPH::EBackFaceMode::IgnoreBackFaces); new_ray_cast_settings.SetBackFaceMode(JPH::EBackFaceMode::IgnoreBackFaces);
} }

2
modules/jolt_physics/shapes/jolt_custom_double_sided_shape.h
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@@ -69,6 +69,8 @@ public:
JoltCustomDecoratedShape(JoltCustomShapeSubType::DOUBLE_SIDED, p_inner_shape), back_face_collision(p_back_face_collision) {} JoltCustomDecoratedShape(JoltCustomShapeSubType::DOUBLE_SIDED, p_inner_shape), back_face_collision(p_back_face_collision) {}
virtual void CastRay(const JPH::RayCast &p_ray, const JPH::RayCastSettings &p_ray_cast_settings, const JPH::SubShapeIDCreator &p_sub_shape_id_creator, JPH::CastRayCollector &p_collector, const JPH::ShapeFilter &p_shape_filter = JPH::ShapeFilter()) const override; virtual void CastRay(const JPH::RayCast &p_ray, const JPH::RayCastSettings &p_ray_cast_settings, const JPH::SubShapeIDCreator &p_sub_shape_id_creator, JPH::CastRayCollector &p_collector, const JPH::ShapeFilter &p_shape_filter = JPH::ShapeFilter()) const override;
bool should_collide_with_back_faces() const { return back_face_collision; }
}; };
#endif // JOLT_CUSTOM_DOUBLE_SIDED_SHAPE_H #endif // JOLT_CUSTOM_DOUBLE_SIDED_SHAPE_H