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BVH broadphase creates objects with updated AABB to avoid extra checks

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When set_static is called on a newly added object, the forced collision
check in BVH set_pairable was using an empty AABB, which caused
unnecessary collision checks at the origin, then a call to move was
checking again at the right position.

These changes ensure broadphase objects are added to the BVH tree with
proper AABB so collision checks are correctly done right away.

Octree & Basic broadphase trees are not affected by these changes.
This commit is contained in:
PouleyKetchoupp 2021-01-19 11:59:58 -07:00
parent 2fa93d8514
commit 10868e76e6
8 changed files with 16 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
servers/physics/broad_phase_basic.cpp
View file

@ -32,7 +32,7 @@
#include "core/list.h"
#include "core/print_string.h"
BroadPhaseSW::ID BroadPhaseBasic::create(CollisionObjectSW *p_object, int p_subindex) {
BroadPhaseSW::ID BroadPhaseBasic::create(CollisionObjectSW *p_object, int p_subindex, const AABB &p_aabb) {
ERR_FAIL_COND_V(p_object == NULL, 0);

2
servers/physics/broad_phase_basic.h
View file

@ -83,7 +83,7 @@ class BroadPhaseBasic : public BroadPhaseSW {
public:
// 0 is an invalid ID
virtual ID create(CollisionObjectSW *p_object, int p_subindex = 0);
virtual ID create(CollisionObjectSW *p_object, int p_subindex = 0, const AABB &p_aabb = AABB());
virtual void move(ID p_id, const AABB &p_aabb);
virtual void set_static(ID p_id, bool p_static);
virtual void remove(ID p_id);

4
servers/physics/broad_phase_bvh.cpp
View file

@ -32,9 +32,9 @@
#include "collision_object_sw.h"
#include "core/project_settings.h"
BroadPhaseSW::ID BroadPhaseBVH::create(CollisionObjectSW *p_object, int p_subindex) {
BroadPhaseSW::ID BroadPhaseBVH::create(CollisionObjectSW *p_object, int p_subindex, const AABB &p_aabb) {
ID oid = bvh.create(p_object, AABB(), p_subindex, false, 1 << p_object->get_type(), 0);
ID oid = bvh.create(p_object, p_aabb, p_subindex, false, 1 << p_object->get_type(), 0);
return oid + 1;
}

2
servers/physics/broad_phase_bvh.h
View file

@ -48,7 +48,7 @@ class BroadPhaseBVH : public BroadPhaseSW {
public:
// 0 is an invalid ID
virtual ID create(CollisionObjectSW *p_object, int p_subindex = 0);
virtual ID create(CollisionObjectSW *p_object, int p_subindex = 0, const AABB &p_aabb = AABB());
virtual void move(ID p_id, const AABB &p_aabb);
virtual void set_static(ID p_id, bool p_static);
virtual void remove(ID p_id);

2
servers/physics/broad_phase_octree.cpp
View file

@ -31,7 +31,7 @@
#include "broad_phase_octree.h"
#include "collision_object_sw.h"
BroadPhaseSW::ID BroadPhaseOctree::create(CollisionObjectSW *p_object, int p_subindex) {
BroadPhaseSW::ID BroadPhaseOctree::create(CollisionObjectSW *p_object, int p_subindex, const AABB &p_aabb) {
ID oid = octree.create(p_object, AABB(), p_subindex, false, 1 << p_object->get_type(), 0);
return oid;

2
servers/physics/broad_phase_octree.h
View file

@ -48,7 +48,7 @@ class BroadPhaseOctree : public BroadPhaseSW {
public:
// 0 is an invalid ID
virtual ID create(CollisionObjectSW *p_object, int p_subindex = 0);
virtual ID create(CollisionObjectSW *p_object, int p_subindex = 0, const AABB &p_aabb = AABB());
virtual void move(ID p_id, const AABB &p_aabb);
virtual void set_static(ID p_id, bool p_static);
virtual void remove(ID p_id);

2
servers/physics/broad_phase_sw.h
View file

@ -49,7 +49,7 @@ public:
typedef void (*UnpairCallback)(CollisionObjectSW *A, int p_subindex_A, CollisionObjectSW *B, int p_subindex_B, void *p_data, void *p_userdata);
// 0 is an invalid ID
virtual ID create(CollisionObjectSW *p_object_, int p_subindex = 0) = 0;
virtual ID create(CollisionObjectSW *p_object_, int p_subindex = 0, const AABB &p_aabb = AABB()) = 0;
virtual void move(ID p_id, const AABB &p_aabb) = 0;
virtual void set_static(ID p_id, bool p_static) = 0;
virtual void remove(ID p_id) = 0;

18
servers/physics/collision_object_sw.cpp
View file

@ -150,12 +150,7 @@ void CollisionObjectSW::_update_shapes() {
return;
for (int i = 0; i < shapes.size(); i++) {
Shape &s = shapes.write[i];
if (s.bpid == 0) {
s.bpid = space->get_broadphase()->create(this, i);
space->get_broadphase()->set_static(s.bpid, _static);
}
//not quite correct, should compute the next matrix..
AABB shape_aabb = s.shape->get_aabb();
@ -167,6 +162,10 @@ void CollisionObjectSW::_update_shapes() {
Vector3 scale = xform.get_basis().get_scale();
s.area_cache = s.shape->get_area() * scale.x * scale.y * scale.z;
if (s.bpid == 0) {
s.bpid = space->get_broadphase()->create(this, i, s.aabb_cache);
space->get_broadphase()->set_static(s.bpid, _static);
}
space->get_broadphase()->move(s.bpid, s.aabb_cache);
}
}
@ -177,12 +176,7 @@ void CollisionObjectSW::_update_shapes_with_motion(const Vector3 &p_motion) {
return;
for (int i = 0; i < shapes.size(); i++) {
Shape &s = shapes.write[i];
if (s.bpid == 0) {
s.bpid = space->get_broadphase()->create(this, i);
space->get_broadphase()->set_static(s.bpid, _static);
}
//not quite correct, should compute the next matrix..
AABB shape_aabb = s.shape->get_aabb();
@ -191,6 +185,10 @@ void CollisionObjectSW::_update_shapes_with_motion(const Vector3 &p_motion) {
shape_aabb = shape_aabb.merge(AABB(shape_aabb.position + p_motion, shape_aabb.size)); //use motion
s.aabb_cache = shape_aabb;
if (s.bpid == 0) {
s.bpid = space->get_broadphase()->create(this, i, s.aabb_cache);
space->get_broadphase()->set_static(s.bpid, _static);
}
space->get_broadphase()->move(s.bpid, shape_aabb);
}
}