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-rw-r--r--modules/bullet/bullet_physics_server.cpp14
-rw-r--r--modules/bullet/bullet_physics_server.h3
-rw-r--r--modules/bullet/rigid_body_bullet.cpp18
-rw-r--r--modules/bullet/rigid_body_bullet.h9
-rw-r--r--modules/bullet/space_bullet.cpp39
5 files changed, 82 insertions, 1 deletions
diff --git a/modules/bullet/bullet_physics_server.cpp b/modules/bullet/bullet_physics_server.cpp
index 6246a295ec..a387c26aaf 100644
--- a/modules/bullet/bullet_physics_server.cpp
+++ b/modules/bullet/bullet_physics_server.cpp
@@ -643,6 +643,20 @@ float BulletPhysicsServer::body_get_param(RID p_body, BodyParameter p_param) con
return body->get_param(p_param);
}
+void BulletPhysicsServer::body_set_combine_mode(RID p_body, BodyParameter p_param, CombineMode p_mode) {
+ RigidBodyBullet *body = rigid_body_owner.get(p_body);
+ ERR_FAIL_COND(!body);
+
+ body->set_combine_mode(p_param, p_mode);
+}
+
+PhysicsServer::CombineMode BulletPhysicsServer::body_get_combine_mode(RID p_body, BodyParameter p_param) const {
+ RigidBodyBullet *body = rigid_body_owner.get(p_body);
+ ERR_FAIL_COND_V(!body, COMBINE_MODE_INHERIT);
+
+ return body->get_combine_mode(p_param);
+}
+
void BulletPhysicsServer::body_set_kinematic_safe_margin(RID p_body, real_t p_margin) {
RigidBodyBullet *body = rigid_body_owner.get(p_body);
ERR_FAIL_COND(!body);
diff --git a/modules/bullet/bullet_physics_server.h b/modules/bullet/bullet_physics_server.h
index e931915bba..06769106c3 100644
--- a/modules/bullet/bullet_physics_server.h
+++ b/modules/bullet/bullet_physics_server.h
@@ -213,6 +213,9 @@ public:
virtual void body_set_param(RID p_body, BodyParameter p_param, float p_value);
virtual float body_get_param(RID p_body, BodyParameter p_param) const;
+ virtual void body_set_combine_mode(RID p_body, BodyParameter p_param, CombineMode p_mode);
+ virtual CombineMode body_get_combine_mode(RID p_body, BodyParameter p_param) const;
+
virtual void body_set_kinematic_safe_margin(RID p_body, real_t p_margin);
virtual real_t body_get_kinematic_safe_margin(RID p_body) const;
diff --git a/modules/bullet/rigid_body_bullet.cpp b/modules/bullet/rigid_body_bullet.cpp
index 2494063c22..03a359ea93 100644
--- a/modules/bullet/rigid_body_bullet.cpp
+++ b/modules/bullet/rigid_body_bullet.cpp
@@ -256,6 +256,8 @@ RigidBodyBullet::RigidBodyBullet() :
angularDamp(0),
can_sleep(true),
omit_forces_integration(false),
+ restitution_combine_mode(PhysicsServer::COMBINE_MODE_INHERIT),
+ friction_combine_mode(PhysicsServer::COMBINE_MODE_INHERIT),
force_integration_callback(NULL),
isTransformChanged(false),
previousActiveState(true),
@@ -749,6 +751,22 @@ Vector3 RigidBodyBullet::get_angular_velocity() const {
return gVec;
}
+void RigidBodyBullet::set_combine_mode(const PhysicsServer::BodyParameter p_param, const PhysicsServer::CombineMode p_mode) {
+ if (p_param == PhysicsServer::BODY_PARAM_BOUNCE) {
+ restitution_combine_mode = p_mode;
+ } else {
+ friction_combine_mode = p_mode;
+ }
+}
+
+PhysicsServer::CombineMode RigidBodyBullet::get_combine_mode(PhysicsServer::BodyParameter p_param) const {
+ if (p_param == PhysicsServer::BODY_PARAM_BOUNCE) {
+ return restitution_combine_mode;
+ } else {
+ return friction_combine_mode;
+ }
+}
+
void RigidBodyBullet::set_transform__bullet(const btTransform &p_global_transform) {
if (mode == PhysicsServer::BODY_MODE_KINEMATIC) {
// The kinematic use MotionState class
diff --git a/modules/bullet/rigid_body_bullet.h b/modules/bullet/rigid_body_bullet.h
index b9511243c7..911e93bfef 100644
--- a/modules/bullet/rigid_body_bullet.h
+++ b/modules/bullet/rigid_body_bullet.h
@@ -200,6 +200,9 @@ private:
bool can_sleep;
bool omit_forces_integration;
+ PhysicsServer::CombineMode restitution_combine_mode;
+ PhysicsServer::CombineMode friction_combine_mode;
+
Vector<CollisionData> collisions;
// these parameters are used to avoid vector resize
int maxCollisionsDetection;
@@ -295,6 +298,12 @@ public:
void set_angular_velocity(const Vector3 &p_velocity);
Vector3 get_angular_velocity() const;
+ void set_combine_mode(const PhysicsServer::BodyParameter p_param, const PhysicsServer::CombineMode p_mode);
+ PhysicsServer::CombineMode get_combine_mode(PhysicsServer::BodyParameter p_param) const;
+
+ _FORCE_INLINE_ PhysicsServer::CombineMode get_restitution_combine_mode() const { return restitution_combine_mode; }
+ _FORCE_INLINE_ PhysicsServer::CombineMode get_friction_combine_mode() const { return friction_combine_mode; }
+
virtual void set_transform__bullet(const btTransform &p_global_transform);
virtual const btTransform &get_transform__bullet() const;
diff --git a/modules/bullet/space_bullet.cpp b/modules/bullet/space_bullet.cpp
index 3a1f5d78dd..f73bde828a 100644
--- a/modules/bullet/space_bullet.cpp
+++ b/modules/bullet/space_bullet.cpp
@@ -549,7 +549,43 @@ BulletPhysicsDirectSpaceState *SpaceBullet::get_direct_state() {
}
btScalar calculateGodotCombinedRestitution(const btCollisionObject *body0, const btCollisionObject *body1) {
- return MAX(body0->getRestitution(), body1->getRestitution());
+
+ const PhysicsServer::CombineMode cm = static_cast<RigidBodyBullet *>(body0->getUserPointer())->get_restitution_combine_mode();
+
+ switch (cm) {
+ case PhysicsServer::COMBINE_MODE_INHERIT:
+ if (static_cast<RigidBodyBullet *>(body1->getUserPointer())->get_restitution_combine_mode() != PhysicsServer::COMBINE_MODE_INHERIT)
+ return calculateGodotCombinedRestitution(body1, body0);
+ // else use MAX [This is used when the two bodies doesn't use physical material]
+ case PhysicsServer::COMBINE_MODE_MAX:
+ return MAX(body0->getRestitution(), body1->getRestitution());
+ case PhysicsServer::COMBINE_MODE_MIN:
+ return MIN(body0->getRestitution(), body1->getRestitution());
+ case PhysicsServer::COMBINE_MODE_MULTIPLY:
+ return body0->getRestitution() * body1->getRestitution();
+ default: // Is always PhysicsServer::COMBINE_MODE_AVERAGE:
+ return (body0->getRestitution() + body1->getRestitution()) / 2;
+ }
+}
+
+btScalar calculateGodotCombinedFriction(const btCollisionObject *body0, const btCollisionObject *body1) {
+
+ const PhysicsServer::CombineMode cm = static_cast<RigidBodyBullet *>(body0->getUserPointer())->get_friction_combine_mode();
+
+ switch (cm) {
+ case PhysicsServer::COMBINE_MODE_INHERIT:
+ if (static_cast<RigidBodyBullet *>(body1->getUserPointer())->get_friction_combine_mode() != PhysicsServer::COMBINE_MODE_INHERIT)
+ return calculateGodotCombinedFriction(body1, body0);
+ // else use MULTIPLY [This is used when the two bodies doesn't use physical material]
+ case PhysicsServer::COMBINE_MODE_MULTIPLY:
+ return body0->getFriction() * body1->getFriction();
+ case PhysicsServer::COMBINE_MODE_MAX:
+ return MAX(body0->getFriction(), body1->getFriction());
+ case PhysicsServer::COMBINE_MODE_MIN:
+ return MIN(body0->getFriction(), body1->getFriction());
+ default: // Is always PhysicsServer::COMBINE_MODE_AVERAGE:
+ return (body0->getFriction() * body1->getFriction()) / 2;
+ }
}
void SpaceBullet::create_empty_world(bool p_create_soft_world) {
@@ -585,6 +621,7 @@ void SpaceBullet::create_empty_world(bool p_create_soft_world) {
ghostPairCallback = bulletnew(btGhostPairCallback);
godotFilterCallback = bulletnew(GodotFilterCallback);
gCalculateCombinedRestitutionCallback = &calculateGodotCombinedRestitution;
+ gCalculateCombinedFrictionCallback = &calculateGodotCombinedFriction;
dynamicsWorld->setWorldUserInfo(this);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 00:52:34 +0000