update to state where objects fall/move

src/bodies/box2d_body_2d.cpp

@@ -139,7 +139,7 @@ void Box2DBody2D::on_marked_active() {
 	ERR_FAIL_COND(!get_space());
 
 	// TODO: Check how that happens, probably not good for performance
-	//ERR_FAIL_COND(mode == PhysicsServer2D::BODY_MODE_STATIC);
+	ERR_FAIL_COND(mode == PhysicsServer2D::BODY_MODE_STATIC);
 	if (mode == PhysicsServer2D::BODY_MODE_STATIC) {
 		return;
 	}

src/box2d-wrapper/box2d_wrapper.h

@@ -14,12 +14,16 @@
 
 // You can use this to change the length scale used by your game.
 // For example for inches you could use 39.4.
+#ifdef b2_lengthUnitsPerMeter
 #undef b2_lengthUnitsPerMeter
+#endif
 #define b2_lengthUnitsPerMeter 100.0f
 
 // The maximum number of vertices on a convex polygon. You cannot increase
 // this too much because b2BlockAllocator has a maximum object size.
+#ifdef b2_maxPolygonVertices
 #undef b2_maxPolygonVertices
+#endif
 #define b2_maxPolygonVertices 64
 
 class Box2DCollisionObject2D;
@@ -450,7 +454,7 @@ ContactResult shapes_contact(b2WorldId world_handle,
 		ShapeInfo shape_info2,
 		real_t margin);
 
-b2WorldId world_create(WorldSettings settings);
+b2WorldId world_create(WorldSettings settings, SimulationSettings simulation_settings);
 
 void world_destroy(b2WorldId world_handle);
 
@@ -463,6 +467,10 @@ void collider_set_contact_force_events_enabled(FixtureHandle collider_handle, bo
 
 void world_step(b2WorldId world_handle, const SimulationSettings settings, std::vector<b2BodyId> active_bodies);
 
+int assert_callback(const char *condition, const char *fileName, int lineNumber);
+
+void set_logging_enabled(bool enabled);
+
 } // namespace box2d
 
 #endif // BOX2D_WRAPPER_H

src/register_types.cpp

@@ -40,6 +40,8 @@ void initialize_box2d_module(ModuleInitializationLevel p_level) {
 		} break;
 		case MODULE_INITIALIZATION_LEVEL_SCENE: {
 			Box2DProjectSettings::register_settings();
+			b2SetAssertFcn(box2d::assert_callback);
+			box2d::set_logging_enabled(Box2DProjectSettings::get_logging_enabled());
 		} break;
 		default: {
 		} break;

src/servers/box2d_project_settings.cpp

@@ -6,7 +6,8 @@ using namespace godot;
 
 constexpr char RUN_ON_SEPARATE_THREAD[] = "physics/2d/run_on_separate_thread";
 constexpr char MAX_THREADS[] = "threading/worker_pool/max_threads";
-constexpr char SUB_STEP_COUNT[] = "physics/box_2d/solver/sub_step_count";
+constexpr char SUB_STEP_COUNT[] = "physics/box_2d/sub_step_count";
+constexpr char LOGGING_ENABLED[] = "physics/box_2d/logging";
 
 void register_setting(
 		const String &p_name,
@@ -64,6 +65,7 @@ void register_setting_ranged(
 
 void Box2DProjectSettings::register_settings() {
 	register_setting_ranged(SUB_STEP_COUNT, 4, U"1,16,or_greater");
+	register_setting_plain(LOGGING_ENABLED, false, true);
 }
 
 template <typename TType>
@@ -89,3 +91,7 @@ int Box2DProjectSettings::get_max_threads() {
 int Box2DProjectSettings::get_sub_step_count() {
 	return get_setting<int>(SUB_STEP_COUNT);
 }
+
+bool Box2DProjectSettings::get_logging_enabled() {
+	return get_setting<bool>(LOGGING_ENABLED);
+}

src/servers/box2d_project_settings.h

@@ -10,5 +10,6 @@ class Box2DProjectSettings {
 
 	static bool should_run_on_separate_thread();
 	static int get_max_threads();
+	static bool get_logging_enabled();
 	static int get_sub_step_count();
 };

src/spaces/box2d_space_2d.cpp

@@ -501,14 +501,6 @@ void Box2DSpace2D::step(real_t p_step) {
 	}
 	contact_debug_count = 0;
 
-	ProjectSettings *project_settings = ProjectSettings::get_singleton();
-
-	default_gravity_dir = project_settings->get_setting_with_override("physics/2d/default_gravity_vector");
-	default_gravity_value = project_settings->get_setting_with_override("physics/2d/default_gravity");
-
-	default_linear_damping = project_settings->get_setting_with_override("physics/2d/default_linear_damp");
-	default_angular_damping = project_settings->get_setting_with_override("physics/2d/default_angular_damp");
-
 	for (SelfList<Box2DBody2D> *body_iterator = mass_properties_update_list.first(); body_iterator;) {
 		Box2DBody2D *body = body_iterator->self();
 		body_iterator = body_iterator->next();
@@ -736,6 +728,12 @@ Box2DSpace2D::Box2DSpace2D() {
 	contact_bias = project_settings->get_setting_with_override("physics/2d/solver/default_contact_bias");
 	constraint_bias = project_settings->get_setting_with_override("physics/2d/solver/default_constraint_bias");
 
+	default_gravity_dir = project_settings->get_setting_with_override("physics/2d/default_gravity_vector");
+	default_gravity_value = project_settings->get_setting_with_override("physics/2d/default_gravity");
+
+	default_linear_damping = project_settings->get_setting_with_override("physics/2d/default_linear_damp");
+	default_angular_damping = project_settings->get_setting_with_override("physics/2d/default_angular_damp");
+
 	direct_access = memnew(Box2DDirectSpaceState2D);
 	direct_access->space = this;
 
@@ -746,9 +744,13 @@ Box2DSpace2D::Box2DSpace2D() {
 	world_settings.sleep_angular_threshold = body_angular_velocity_sleep_threshold;
 	world_settings.sleep_time_until_sleep = body_time_to_sleep;
 
-	handle = box2d::world_create(world_settings);
+	box2d::SimulationSettings simulation_settings;
+	simulation_settings.sub_step_count = Box2DProjectSettings::get_sub_step_count();
+	simulation_settings.gravity.x = default_gravity_dir.x * default_gravity_value;
+	simulation_settings.gravity.y = default_gravity_dir.y * default_gravity_value;
+	handle = box2d::world_create(world_settings, simulation_settings);
 	ERR_FAIL_COND(!box2d::is_handle_valid(handle));
-	
+
 	box2d::world_set_active_body_callback(handle, active_body_callback);
 	box2d::world_set_collision_filter_callback(handle, this);
 }