Merge pull request #20381 from AndreaCatania/phymat_2

Improved Physics material 

4 files changed, 72 insertions, 97 deletions

diff --git a/scene/2d/physics_body_2d.cpp b/scene/2d/physics_body_2d.cpp
index b3ff21457d..85bef4e7f5 100644
--- a/scene/2d/physics_body_2d.cpp
+++ b/scene/2d/physics_body_2d.cpp
@@ -197,9 +197,9 @@ void StaticBody2D::set_friction(real_t p_friction) {
 
 	if (physics_material_override.is_null()) {
 		physics_material_override.instance();
+		set_physics_material_override(physics_material_override);
 	}
 	physics_material_override->set_friction(p_friction);
-	_reload_physics_characteristics();
 }
 
 real_t StaticBody2D::get_friction() const {
@@ -223,9 +223,9 @@ void StaticBody2D::set_bounce(real_t p_bounce) {
 
 	if (physics_material_override.is_null()) {
 		physics_material_override.instance();
+		set_physics_material_override(physics_material_override);
 	}
 	physics_material_override->set_bounce(p_bounce);
-	_reload_physics_characteristics();
 }
 
 real_t StaticBody2D::get_bounce() const {
@@ -243,7 +243,8 @@ real_t StaticBody2D::get_bounce() const {
 
 void StaticBody2D::set_physics_material_override(const Ref<PhysicsMaterial> &p_physics_material_override) {
 	if (physics_material_override.is_valid()) {
-		physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics");
+		if (physics_material_override->is_connected(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics"))
+			physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics");
 	}
 
 	physics_material_override = p_physics_material_override;
@@ -300,13 +301,9 @@ void StaticBody2D::_reload_physics_characteristics() {
 	if (physics_material_override.is_null()) {
 		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, 0);
 		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, 1);
-		Physics2DServer::get_singleton()->body_set_combine_mode(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, Physics2DServer::COMBINE_MODE_INHERIT);
-		Physics2DServer::get_singleton()->body_set_combine_mode(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, Physics2DServer::COMBINE_MODE_INHERIT);
 	} else {
-		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, physics_material_override->get_bounce());
-		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, physics_material_override->get_friction());
-		Physics2DServer::get_singleton()->body_set_combine_mode(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, (Physics2DServer::CombineMode)physics_material_override->get_bounce_combine_mode());
-		Physics2DServer::get_singleton()->body_set_combine_mode(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, (Physics2DServer::CombineMode)physics_material_override->get_friction_combine_mode());
+		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, physics_material_override->computed_bounce());
+		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, physics_material_override->computed_friction());
 	}
 }
 
@@ -625,9 +622,9 @@ void RigidBody2D::set_friction(real_t p_friction) {
 
 	if (physics_material_override.is_null()) {
 		physics_material_override.instance();
+		set_physics_material_override(physics_material_override);
 	}
 	physics_material_override->set_friction(p_friction);
-	_reload_physics_characteristics();
 }
 real_t RigidBody2D::get_friction() const {
 
@@ -650,9 +647,9 @@ void RigidBody2D::set_bounce(real_t p_bounce) {
 
 	if (physics_material_override.is_null()) {
 		physics_material_override.instance();
+		set_physics_material_override(physics_material_override);
 	}
 	physics_material_override->set_bounce(p_bounce);
-	_reload_physics_characteristics();
 }
 real_t RigidBody2D::get_bounce() const {
 
@@ -669,7 +666,8 @@ real_t RigidBody2D::get_bounce() const {
 
 void RigidBody2D::set_physics_material_override(const Ref<PhysicsMaterial> &p_physics_material_override) {
 	if (physics_material_override.is_valid()) {
-		physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics");
+		if (physics_material_override->is_connected(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics"))
+			physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics");
 	}
 
 	physics_material_override = p_physics_material_override;
@@ -1116,13 +1114,9 @@ void RigidBody2D::_reload_physics_characteristics() {
 	if (physics_material_override.is_null()) {
 		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, 0);
 		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, 1);
-		Physics2DServer::get_singleton()->body_set_combine_mode(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, Physics2DServer::COMBINE_MODE_INHERIT);
-		Physics2DServer::get_singleton()->body_set_combine_mode(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, Physics2DServer::COMBINE_MODE_INHERIT);
 	} else {
-		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, physics_material_override->get_bounce());
-		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, physics_material_override->get_friction());
-		Physics2DServer::get_singleton()->body_set_combine_mode(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, (Physics2DServer::CombineMode)physics_material_override->get_bounce_combine_mode());
-		Physics2DServer::get_singleton()->body_set_combine_mode(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, (Physics2DServer::CombineMode)physics_material_override->get_friction_combine_mode());
+		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_BOUNCE, physics_material_override->computed_bounce());
+		Physics2DServer::get_singleton()->body_set_param(get_rid(), Physics2DServer::BODY_PARAM_FRICTION, physics_material_override->computed_friction());
 	}
 }
 
diff --git a/scene/3d/physics_body.cpp b/scene/3d/physics_body.cpp
index 4b3a4add4a..1c9099ec8b 100644
--- a/scene/3d/physics_body.cpp
+++ b/scene/3d/physics_body.cpp
@@ -189,9 +189,10 @@ void StaticBody::set_friction(real_t p_friction) {
 
 	if (physics_material_override.is_null()) {
 		physics_material_override.instance();
+		set_physics_material_override(physics_material_override);
 	}
+
 	physics_material_override->set_friction(p_friction);
-	_reload_physics_characteristics();
 }
 
 real_t StaticBody::get_friction() const {
@@ -215,9 +216,9 @@ void StaticBody::set_bounce(real_t p_bounce) {
 
 	if (physics_material_override.is_null()) {
 		physics_material_override.instance();
+		set_physics_material_override(physics_material_override);
 	}
 	physics_material_override->set_bounce(p_bounce);
-	_reload_physics_characteristics();
 }
 
 real_t StaticBody::get_bounce() const {
@@ -235,7 +236,8 @@ real_t StaticBody::get_bounce() const {
 
 void StaticBody::set_physics_material_override(const Ref<PhysicsMaterial> &p_physics_material_override) {
 	if (physics_material_override.is_valid()) {
-		physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics");
+		if (physics_material_override->is_connected(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics"))
+			physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics");
 	}
 
 	physics_material_override = p_physics_material_override;
@@ -313,13 +315,9 @@ void StaticBody::_reload_physics_characteristics() {
 	if (physics_material_override.is_null()) {
 		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, 0);
 		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, 1);
-		PhysicsServer::get_singleton()->body_set_combine_mode(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, PhysicsServer::COMBINE_MODE_INHERIT);
-		PhysicsServer::get_singleton()->body_set_combine_mode(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, PhysicsServer::COMBINE_MODE_INHERIT);
 	} else {
-		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, physics_material_override->get_bounce());
-		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, physics_material_override->get_friction());
-		PhysicsServer::get_singleton()->body_set_combine_mode(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, physics_material_override->get_bounce_combine_mode());
-		PhysicsServer::get_singleton()->body_set_combine_mode(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, physics_material_override->get_friction_combine_mode());
+		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, physics_material_override->computed_bounce());
+		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, physics_material_override->computed_friction());
 	}
 }
 
@@ -626,9 +624,9 @@ void RigidBody::set_friction(real_t p_friction) {
 
 	if (physics_material_override.is_null()) {
 		physics_material_override.instance();
+		set_physics_material_override(physics_material_override);
 	}
 	physics_material_override->set_friction(p_friction);
-	_reload_physics_characteristics();
 }
 real_t RigidBody::get_friction() const {
 
@@ -648,9 +646,9 @@ void RigidBody::set_bounce(real_t p_bounce) {
 
 	if (physics_material_override.is_null()) {
 		physics_material_override.instance();
+		set_physics_material_override(physics_material_override);
 	}
 	physics_material_override->set_bounce(p_bounce);
-	_reload_physics_characteristics();
 }
 real_t RigidBody::get_bounce() const {
 	ERR_EXPLAIN("The method get_bounce has been deprecated and will be removed in the future, use physical material")
@@ -665,7 +663,8 @@ real_t RigidBody::get_bounce() const {
 
 void RigidBody::set_physics_material_override(const Ref<PhysicsMaterial> &p_physics_material_override) {
 	if (physics_material_override.is_valid()) {
-		physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics");
+		if (physics_material_override->is_connected(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics"))
+			physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, this, "_reload_physics_characteristics");
 	}
 
 	physics_material_override = p_physics_material_override;
@@ -1070,13 +1069,9 @@ void RigidBody::_reload_physics_characteristics() {
 	if (physics_material_override.is_null()) {
 		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, 0);
 		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, 1);
-		PhysicsServer::get_singleton()->body_set_combine_mode(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, PhysicsServer::COMBINE_MODE_INHERIT);
-		PhysicsServer::get_singleton()->body_set_combine_mode(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, PhysicsServer::COMBINE_MODE_INHERIT);
 	} else {
-		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, physics_material_override->get_bounce());
-		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, physics_material_override->get_friction());
-		PhysicsServer::get_singleton()->body_set_combine_mode(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, physics_material_override->get_bounce_combine_mode());
-		PhysicsServer::get_singleton()->body_set_combine_mode(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, physics_material_override->get_friction_combine_mode());
+		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_BOUNCE, physics_material_override->computed_bounce());
+		PhysicsServer::get_singleton()->body_set_param(get_rid(), PhysicsServer::BODY_PARAM_FRICTION, physics_material_override->computed_friction());
 	}
 }
 
diff --git a/scene/resources/physics_material.cpp b/scene/resources/physics_material.cpp
index de3cfd1371..dc5ca1aef6 100644
--- a/scene/resources/physics_material.cpp
+++ b/scene/resources/physics_material.cpp
@@ -29,66 +29,48 @@
 /*************************************************************************/
 #include "physics_material.h"
 
-bool PhysicsMaterial::_set(const StringName &p_name, const Variant &p_value) {
-	if (p_name == "bounce") {
-		set_bounce(p_value);
-	} else if (p_name == "bounce_combine_mode") {
-		set_bounce_combine_mode(static_cast<PhysicsServer::CombineMode>(int(p_value)));
-	} else if (p_name == "friction") {
-		set_friction(p_value);
-	} else if (p_name == "friction_combine_mode") {
-		set_friction_combine_mode(static_cast<PhysicsServer::CombineMode>(int(p_value)));
-	} else {
-		return false;
-	}
+void PhysicsMaterial::_bind_methods() {
 
-	emit_changed();
-	return true;
-}
+	ClassDB::bind_method(D_METHOD("set_friction", "friction"), &PhysicsMaterial::set_friction);
+	ClassDB::bind_method(D_METHOD("get_friction"), &PhysicsMaterial::get_friction);
 
-bool PhysicsMaterial::_get(const StringName &p_name, Variant &r_ret) const {
-	if (p_name == "bounce") {
-		r_ret = bounce;
-	} else if (p_name == "bounce_combine_mode") {
-		r_ret = int(bounce_combine_mode);
-	} else if (p_name == "friction") {
-		r_ret = friction;
-	} else if (p_name == "friction_combine_mode") {
-		r_ret = int(friction_combine_mode);
-	} else {
-		return false;
-	}
+	ClassDB::bind_method(D_METHOD("set_rough", "rough"), &PhysicsMaterial::set_rough);
+	ClassDB::bind_method(D_METHOD("is_rough"), &PhysicsMaterial::is_rough);
 
-	return true;
-}
+	ClassDB::bind_method(D_METHOD("set_bounce", "bounce"), &PhysicsMaterial::set_bounce);
+	ClassDB::bind_method(D_METHOD("get_bounce"), &PhysicsMaterial::get_bounce);
 
-void PhysicsMaterial::_get_property_list(List<PropertyInfo> *p_list) const {
-	p_list->push_back(PropertyInfo(Variant::REAL, "bounce"));
-	p_list->push_back(PropertyInfo(Variant::INT, "bounce_combine_mode", PROPERTY_HINT_ENUM, "Max,Min,Multiply,Average"));
-	p_list->push_back(PropertyInfo(Variant::REAL, "friction"));
-	p_list->push_back(PropertyInfo(Variant::INT, "friction_combine_mode", PROPERTY_HINT_ENUM, "Max,Min,Multiply,Average"));
-}
+	ClassDB::bind_method(D_METHOD("set_absorbent", "absorbent"), &PhysicsMaterial::set_absorbent);
+	ClassDB::bind_method(D_METHOD("is_absorbent"), &PhysicsMaterial::is_absorbent);
 
-void PhysicsMaterial::_bind_methods() {}
+	ADD_PROPERTY(PropertyInfo(Variant::REAL, "friction"), "set_friction", "get_friction");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "rough"), "set_rough", "is_rough");
+	ADD_PROPERTY(PropertyInfo(Variant::REAL, "bounce"), "set_bounce", "get_bounce");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "absorbent"), "set_absorbent", "is_absorbent");
+}
 
-void PhysicsMaterial::set_bounce(real_t p_val) {
-	bounce = p_val;
+void PhysicsMaterial::set_friction(real_t p_val) {
+	friction = p_val;
+	emit_changed();
 }
 
-void PhysicsMaterial::set_bounce_combine_mode(PhysicsServer::CombineMode p_val) {
-	bounce_combine_mode = p_val;
+void PhysicsMaterial::set_rough(bool p_val) {
+	rough = p_val;
+	emit_changed();
 }
 
-void PhysicsMaterial::set_friction(real_t p_val) {
-	friction = p_val;
+void PhysicsMaterial::set_bounce(real_t p_val) {
+	bounce = p_val;
+	emit_changed();
 }
 
-void PhysicsMaterial::set_friction_combine_mode(PhysicsServer::CombineMode p_val) {
-	friction_combine_mode = p_val;
+void PhysicsMaterial::set_absorbent(bool p_val) {
+	absorbent = p_val;
+	emit_changed();
 }
 
 PhysicsMaterial::PhysicsMaterial() :
+		friction(1),
+		rough(false),
 		bounce(0),
-		bounce_combine_mode(PhysicsServer::COMBINE_MODE_MAX),
-		friction(0),
-		friction_combine_mode(PhysicsServer::COMBINE_MODE_MULTIPLY) {}
+		absorbent(false) {}
diff --git a/scene/resources/physics_material.h b/scene/resources/physics_material.h
index a6cb8c288e..dfe48d94cf 100644
--- a/scene/resources/physics_material.h
+++ b/scene/resources/physics_material.h
@@ -39,30 +39,34 @@ class PhysicsMaterial : public Resource {
 	OBJ_SAVE_TYPE(PhysicsMaterial);
 	RES_BASE_EXTENSION("PhyMat");
 
-	real_t bounce;
-	PhysicsServer::CombineMode bounce_combine_mode;
 	real_t friction;
-	PhysicsServer::CombineMode friction_combine_mode;
+	bool rough;
+	real_t bounce;
+	bool absorbent;
 
 protected:
-	bool _set(const StringName &p_name, const Variant &p_value);
-	bool _get(const StringName &p_name, Variant &r_ret) const;
-	void _get_property_list(List<PropertyInfo> *p_list) const;
-
 	static void _bind_methods();
 
 public:
+	void set_friction(real_t p_val);
+	_FORCE_INLINE_ real_t get_friction() const { return friction; }
+
+	void set_rough(bool p_val);
+	_FORCE_INLINE_ bool is_rough() const { return rough; }
+
+	_FORCE_INLINE_ real_t computed_friction() const {
+		return rough ? -friction : friction;
+	}
+
 	void set_bounce(real_t p_val);
 	_FORCE_INLINE_ real_t get_bounce() const { return bounce; }
 
-	void set_bounce_combine_mode(PhysicsServer::CombineMode p_val);
-	_FORCE_INLINE_ PhysicsServer::CombineMode get_bounce_combine_mode() const { return bounce_combine_mode; }
-
-	void set_friction(real_t p_val);
-	_FORCE_INLINE_ real_t get_friction() const { return friction; }
+	void set_absorbent(bool p_val);
+	_FORCE_INLINE_ bool is_absorbent() const { return absorbent; }
 
-	void set_friction_combine_mode(PhysicsServer::CombineMode p_val);
-	_FORCE_INLINE_ PhysicsServer::CombineMode get_friction_combine_mode() const { return friction_combine_mode; }
+	_FORCE_INLINE_ real_t computed_bounce() const {
+		return absorbent ? -bounce : bounce;
+	}
 
 	PhysicsMaterial();
 };