Cppcheck report - Godot - branch: 3.x, commit: cd92ad0f69a842d94dc2d56f83cbd8f724ed2959 (2024-12-15): servers/physics/space_sw.cpp

/**************************************************************************/
/*  space_sw.cpp                                                          */
/**************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "space_sw.h"

#include "collision_solver_sw.h"
#include "core/project_settings.h"
#include "physics_server_sw.h"

#define TEST_MOTION_MARGIN_MIN_VALUE 0.0001
#define TEST_MOTION_MIN_CONTACT_DEPTH_FACTOR 0.05

_FORCE_INLINE_ static bool _can_collide_with(CollisionObjectSW *p_object, uint32_t p_collision_mask, bool p_collide_with_bodies, bool p_collide_with_areas) {
	if (!(p_object->get_collision_layer() & p_collision_mask)) {
		return false;
	}

	if (p_object->get_type() == CollisionObjectSW::TYPE_AREA && !p_collide_with_areas) {
		return false;
	}

	if (p_object->get_type() == CollisionObjectSW::TYPE_BODY && !p_collide_with_bodies) {
		return false;
	}

	return true;
}

int PhysicsDirectSpaceStateSW::intersect_point(const Vector3 &p_point, ShapeResult *r_results, int p_result_max, const Set<RID> &p_exclude, uint32_t p_collision_mask, bool p_collide_with_bodies, bool p_collide_with_areas) {
	ERR_FAIL_COND_V(space->locked, false);
	int amount = space->broadphase->cull_point(p_point, space->intersection_query_results, SpaceSW::INTERSECTION_QUERY_MAX, space->intersection_query_subindex_results);
	int cc = 0;

	//Transform ai = p_xform.affine_inverse();

	for (int i = 0; i < amount; i++) {
		if (cc >= p_result_max) {
			break;
		}

		if (!_can_collide_with(space->intersection_query_results[i], p_collision_mask, p_collide_with_bodies, p_collide_with_areas)) {
			continue;
		}

		//area can't be picked by ray (default)

		if (p_exclude.has(space->intersection_query_results[i]->get_self())) {
			continue;
		}

		const CollisionObjectSW *col_obj = space->intersection_query_results[i];
		int shape_idx = space->intersection_query_subindex_results[i];

		Transform inv_xform = col_obj->get_transform() * col_obj->get_shape_transform(shape_idx);
		inv_xform.affine_invert();

		if (!col_obj->get_shape(shape_idx)->intersect_point(inv_xform.xform(p_point))) {
			continue;
		}

		r_results[cc].collider_id = col_obj->get_instance_id();
		if (r_results[cc].collider_id != 0) {
			r_results[cc].collider = ObjectDB::get_instance(r_results[cc].collider_id);
		} else {
			r_results[cc].collider = nullptr;
		}
		r_results[cc].rid = col_obj->get_self();
		r_results[cc].shape = shape_idx;

		cc++;
	}

	return cc;
}

bool PhysicsDirectSpaceStateSW::intersect_ray(const Vector3 &p_from, const Vector3 &p_to, RayResult &r_result, const Set<RID> &p_exclude, uint32_t p_collision_mask, bool p_collide_with_bodies, bool p_collide_with_areas, bool p_pick_ray) {
	ERR_FAIL_COND_V(space->locked, false);

	Vector3 begin, end;
	Vector3 normal;
	begin = p_from;
	end = p_to;
	normal = (end - begin).normalized();

	int amount = space->broadphase->cull_segment(begin, end, space->intersection_query_results, SpaceSW::INTERSECTION_QUERY_MAX, space->intersection_query_subindex_results);

	//todo, create another array that references results, compute AABBs and check closest point to ray origin, sort, and stop evaluating results when beyond first collision

	bool collided = false;
	Vector3 res_point, res_normal;
	int res_shape = 0;
	const CollisionObjectSW *res_obj = nullptr;
	real_t min_d = 1e10;

	for (int i = 0; i < amount; i++) {
		if (!_can_collide_with(space->intersection_query_results[i], p_collision_mask, p_collide_with_bodies, p_collide_with_areas)) {
			continue;
		}

		if (p_pick_ray && !(space->intersection_query_results[i]->is_ray_pickable())) {
			continue;
		}

		if (p_exclude.has(space->intersection_query_results[i]->get_self())) {
			continue;
		}

		const CollisionObjectSW *col_obj = space->intersection_query_results[i];

		int shape_idx = space->intersection_query_subindex_results[i];
		Transform inv_xform = col_obj->get_shape_inv_transform(shape_idx) * col_obj->get_inv_transform();

		Vector3 local_from = inv_xform.xform(begin);
		Vector3 local_to = inv_xform.xform(end);

		const ShapeSW *shape = col_obj->get_shape(shape_idx);

		Vector3 shape_point, shape_normal;

		if (shape->intersect_segment(local_from, local_to, shape_point, shape_normal)) {
			Transform xform = col_obj->get_transform() * col_obj->get_shape_transform(shape_idx);
			shape_point = xform.xform(shape_point);

			real_t ld = normal.dot(shape_point);

			if (ld < min_d) {
				min_d = ld;
				res_point = shape_point;
				res_normal = inv_xform.basis.xform_inv(shape_normal).normalized();
				res_shape = shape_idx;
				res_obj = col_obj;
				collided = true;
			}
		}
	}

	if (!collided) {
		return false;
	}

	r_result.collider_id = res_obj->get_instance_id();
	if (r_result.collider_id != 0) {
		r_result.collider = ObjectDB::get_instance(r_result.collider_id);
	} else {
		r_result.collider = nullptr;
	}
	r_result.normal = res_normal;
	r_result.position = res_point;
	r_result.rid = res_obj->get_self();
	r_result.shape = res_shape;

	return true;
}

int PhysicsDirectSpaceStateSW::intersect_shape(const RID &p_shape, const Transform &p_xform, real_t p_margin, ShapeResult *r_results, int p_result_max, const Set<RID> &p_exclude, uint32_t p_collision_mask, bool p_collide_with_bodies, bool p_collide_with_areas) {
	if (p_result_max <= 0) {
		return 0;
	}

	ShapeSW *shape = static_cast<PhysicsServerSW *>(PhysicsServer::get_singleton())->shape_owner.get(p_shape);
	ERR_FAIL_COND_V(!shape, 0);

	AABB aabb = p_xform.xform(shape->get_aabb());

	int amount = space->broadphase->cull_aabb(aabb, space->intersection_query_results, SpaceSW::INTERSECTION_QUERY_MAX, space->intersection_query_subindex_results);

	int cc = 0;

	//Transform ai = p_xform.affine_inverse();

	for (int i = 0; i < amount; i++) {
		if (cc >= p_result_max) {
			break;
		}

		if (!_can_collide_with(space->intersection_query_results[i], p_collision_mask, p_collide_with_bodies, p_collide_with_areas)) {
			continue;
		}

		//area can't be picked by ray (default)

		if (p_exclude.has(space->intersection_query_results[i]->get_self())) {
			continue;
		}

		const CollisionObjectSW *col_obj = space->intersection_query_results[i];
		int shape_idx = space->intersection_query_subindex_results[i];

		if (!CollisionSolverSW::solve_static(shape, p_xform, col_obj->get_shape(shape_idx), col_obj->get_transform() * col_obj->get_shape_transform(shape_idx), nullptr, nullptr, nullptr, p_margin, 0)) {
			continue;
		}

		if (r_results) {
			r_results[cc].collider_id = col_obj->get_instance_id();
			if (r_results[cc].collider_id != 0) {
				r_results[cc].collider = ObjectDB::get_instance(r_results[cc].collider_id);
			} else {
				r_results[cc].collider = nullptr;
			}
			r_results[cc].rid = col_obj->get_self();
			r_results[cc].shape = shape_idx;
		}

		cc++;
	}

	return cc;
}

bool PhysicsDirectSpaceStateSW::cast_motion(const RID &p_shape, const Transform &p_xform, const Vector3 &p_motion, real_t p_margin, real_t &p_closest_safe, real_t &p_closest_unsafe, const Set<RID> &p_exclude, uint32_t p_collision_mask, bool p_collide_with_bodies, bool p_collide_with_areas, ShapeRestInfo *r_info) {
	ShapeSW *shape = static_cast<PhysicsServerSW *>(PhysicsServer::get_singleton())->shape_owner.get(p_shape);
	ERR_FAIL_COND_V(!shape, false);

	AABB aabb = p_xform.xform(shape->get_aabb());
	aabb = aabb.merge(AABB(aabb.position + p_motion, aabb.size)); //motion
	aabb = aabb.grow(p_margin);

	int amount = space->broadphase->cull_aabb(aabb, space->intersection_query_results, SpaceSW::INTERSECTION_QUERY_MAX, space->intersection_query_subindex_results);

	real_t best_safe = 1;
	real_t best_unsafe = 1;

	Transform xform_inv = p_xform.affine_inverse();
	MotionShapeSW mshape;
	mshape.shape = shape;
	mshape.motion = xform_inv.basis.xform(p_motion);

	bool best_first = true;

	Vector3 motion_normal = p_motion.normalized();

	Vector3 closest_A, closest_B;

	for (int i = 0; i < amount; i++) {
		if (!_can_collide_with(space->intersection_query_results[i], p_collision_mask, p_collide_with_bodies, p_collide_with_areas)) {
			continue;
		}

		if (p_exclude.has(space->intersection_query_results[i]->get_self())) {
			continue; //ignore excluded
		}

		const CollisionObjectSW *col_obj = space->intersection_query_results[i];
		int shape_idx = space->intersection_query_subindex_results[i];

		Vector3 point_A, point_B;
		Vector3 sep_axis = motion_normal;

		Transform col_obj_xform = col_obj->get_transform() * col_obj->get_shape_transform(shape_idx);
		//test initial overlap, does it collide if going all the way?
		if (CollisionSolverSW::solve_distance(&mshape, p_xform, col_obj->get_shape(shape_idx), col_obj_xform, point_A, point_B, aabb, &sep_axis)) {
			continue;
		}

		//test initial overlap, ignore objects it's inside of.
		sep_axis = motion_normal;

		if (!CollisionSolverSW::solve_distance(shape, p_xform, col_obj->get_shape(shape_idx), col_obj_xform, point_A, point_B, aabb, &sep_axis)) {
			continue;
		}

		//just do kinematic solving
		real_t low = 0.0;
		real_t hi = 1.0;
		real_t fraction_coeff = 0.5;
		for (int j = 0; j < 8; j++) { //steps should be customizable..
			real_t fraction = low + (hi - low) * fraction_coeff;

			mshape.motion = xform_inv.basis.xform(p_motion * fraction);

			Vector3 lA, lB;
			Vector3 sep = motion_normal; //important optimization for this to work fast enough
			bool collided = !CollisionSolverSW::solve_distance(&mshape, p_xform, col_obj->get_shape(shape_idx), col_obj_xform, lA, lB, aabb, &sep);

			if (collided) {
				hi = fraction;
				if ((j == 0) || (low > 0.0)) { // Did it not collide before?
					// When alternating or first iteration, use dichotomy.
					fraction_coeff = 0.5;
				} else {
					// When colliding again, converge faster towards low fraction
					// for more accurate results with long motions that collide near the start.
					fraction_coeff = 0.25;
				}
			} else {
				point_A = lA;
				point_B = lB;
				low = fraction;
				if ((j == 0) || (hi < 1.0)) { // Did it collide before?
					// When alternating or first iteration, use dichotomy.
					fraction_coeff = 0.5;
				} else {
					// When not colliding again, converge faster towards high fraction
					// for more accurate results with long motions that collide near the end.
					fraction_coeff = 0.75;
				}
			}
		}

		if (low < best_safe) {
			best_first = true; //force reset
			best_safe = low;
			best_unsafe = hi;
		}

		if (r_info && (best_first || (point_A.distance_squared_to(point_B) < closest_A.distance_squared_to(closest_B) && low <= best_safe))) {
			closest_A = point_A;
			closest_B = point_B;
			r_info->collider_id = col_obj->get_instance_id();
			r_info->rid = col_obj->get_self();
			r_info->shape = shape_idx;
			r_info->point = closest_B;
			r_info->normal = (closest_A - closest_B).normalized();
			best_first = false;
			if (col_obj->get_type() == CollisionObjectSW::TYPE_BODY) {
				const BodySW *body = static_cast<const BodySW *>(col_obj);
				Vector3 rel_vec = closest_B - (body->get_transform().origin + body->get_center_of_mass());
				r_info->linear_velocity = body->get_linear_velocity() + (body->get_angular_velocity()).cross(rel_vec);
			}
		}
	}

	p_closest_safe = best_safe;
	p_closest_unsafe = best_unsafe;

	return true;
}

bool PhysicsDirectSpaceStateSW::collide_shape(RID p_shape, const Transform &p_shape_xform, real_t p_margin, Vector3 *r_results, int p_result_max, int &r_result_count, const Set<RID> &p_exclude, uint32_t p_collision_mask, bool p_collide_with_bodies, bool p_collide_with_areas) {
	if (p_result_max <= 0) {
		return false;
	}

	ShapeSW *shape = static_cast<PhysicsServerSW *>(PhysicsServer::get_singleton())->shape_owner.get(p_shape);
	ERR_FAIL_COND_V(!shape, 0);

	AABB aabb = p_shape_xform.xform(shape->get_aabb());
	aabb = aabb.grow(p_margin);

	int amount = space->broadphase->cull_aabb(aabb, space->intersection_query_results, SpaceSW::INTERSECTION_QUERY_MAX, space->intersection_query_subindex_results);

	bool collided = false;
	r_result_count = 0;

	PhysicsServerSW::CollCbkData cbk;
	cbk.max = p_result_max;
	cbk.amount = 0;
	cbk.ptr = r_results;
	CollisionSolverSW::CallbackResult cbkres = PhysicsServerSW::_shape_col_cbk;

	PhysicsServerSW::CollCbkData *cbkptr = &cbk;

	for (int i = 0; i < amount; i++) {
		if (!_can_collide_with(space->intersection_query_results[i], p_collision_mask, p_collide_with_bodies, p_collide_with_areas)) {
			continue;
		}

		const CollisionObjectSW *col_obj = space->intersection_query_results[i];
		int shape_idx = space->intersection_query_subindex_results[i];

		if (p_exclude.has(col_obj->get_self())) {
			continue;
		}

		if (CollisionSolverSW::solve_static(shape, p_shape_xform, col_obj->get_shape(shape_idx), col_obj->get_transform() * col_obj->get_shape_transform(shape_idx), cbkres, cbkptr, nullptr, p_margin)) {
			collided = true;
		}
	}

	r_result_count = cbk.amount;

	return collided;
}

struct _RestCallbackData {
	const CollisionObjectSW *object;
	const CollisionObjectSW *best_object;
	int local_shape;
	int best_local_shape;
	int shape;
	int best_shape;
	Vector3 best_contact;
	Vector3 best_normal;
	real_t best_len;
	real_t min_allowed_depth;
};

static void _rest_cbk_result(const Vector3 &p_point_A, const Vector3 &p_point_B, void *p_userdata) {
	_RestCallbackData *rd = (_RestCallbackData *)p_userdata;
<--- C-style pointer casting [+]
C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected. See also: https://www.securecoding.cert.org/confluence/display/cplusplus/EXP05-CPP.+Do+not+use+C-style+casts.

	Vector3 contact_rel = p_point_B - p_point_A;
	real_t len = contact_rel.length();
	if (len < rd->min_allowed_depth) {
		return;
	}
	if (len <= rd->best_len) {
		return;
	}

	rd->best_len = len;
	rd->best_contact = p_point_B;
	rd->best_normal = contact_rel / len;
	rd->best_object = rd->object;
	rd->best_shape = rd->shape;
	rd->best_local_shape = rd->local_shape;
}
bool PhysicsDirectSpaceStateSW::rest_info(RID p_shape, const Transform &p_shape_xform, real_t p_margin, ShapeRestInfo *r_info, const Set<RID> &p_exclude, uint32_t p_collision_mask, bool p_collide_with_bodies, bool p_collide_with_areas) {
	ShapeSW *shape = static_cast<PhysicsServerSW *>(PhysicsServer::get_singleton())->shape_owner.get(p_shape);
	ERR_FAIL_COND_V(!shape, 0);

	real_t margin = MAX(p_margin, TEST_MOTION_MARGIN_MIN_VALUE);

	real_t min_contact_depth = margin * TEST_MOTION_MIN_CONTACT_DEPTH_FACTOR;

	AABB aabb = p_shape_xform.xform(shape->get_aabb());
	aabb = aabb.grow(margin);

	int amount = space->broadphase->cull_aabb(aabb, space->intersection_query_results, SpaceSW::INTERSECTION_QUERY_MAX, space->intersection_query_subindex_results);

	_RestCallbackData rcd;
	rcd.best_len = 0;
	rcd.best_object = nullptr;
	rcd.best_shape = 0;
	rcd.min_allowed_depth = min_contact_depth;

	for (int i = 0; i < amount; i++) {
		if (!_can_collide_with(space->intersection_query_results[i], p_collision_mask, p_collide_with_bodies, p_collide_with_areas)) {
			continue;
		}

		const CollisionObjectSW *col_obj = space->intersection_query_results[i];
		int shape_idx = space->intersection_query_subindex_results[i];

		if (p_exclude.has(col_obj->get_self())) {
			continue;
		}

		rcd.object = col_obj;
		rcd.shape = shape_idx;
		bool sc = CollisionSolverSW::solve_static(shape, p_shape_xform, col_obj->get_shape(shape_idx), col_obj->get_transform() * col_obj->get_shape_transform(shape_idx), _rest_cbk_result, &rcd, nullptr, margin);
		if (!sc) {
			continue;
		}
	}

	if (rcd.best_len == 0 || !rcd.best_object) {
		return false;
	}

	r_info->collider_id = rcd.best_object->get_instance_id();
	r_info->shape = rcd.best_shape;
	r_info->normal = rcd.best_normal;
	r_info->point = rcd.best_contact;
	r_info->rid = rcd.best_object->get_self();
	if (rcd.best_object->get_type() == CollisionObjectSW::TYPE_BODY) {
		const BodySW *body = static_cast<const BodySW *>(rcd.best_object);
		Vector3 rel_vec = rcd.best_contact - (body->get_transform().origin + body->get_center_of_mass());
		r_info->linear_velocity = body->get_linear_velocity() + (body->get_angular_velocity()).cross(rel_vec);

	} else {
		r_info->linear_velocity = Vector3();
	}

	return true;
}

Vector3 PhysicsDirectSpaceStateSW::get_closest_point_to_object_volume(RID p_object, const Vector3 p_point) const {
	CollisionObjectSW *obj = PhysicsServerSW::singleton->area_owner.getornull(p_object);
	if (!obj) {
		obj = PhysicsServerSW::singleton->body_owner.getornull(p_object);
	}
	ERR_FAIL_COND_V(!obj, Vector3());

	ERR_FAIL_COND_V(obj->get_space() != space, Vector3());

	float min_distance = 1e20;
	Vector3 min_point;

	bool shapes_found = false;

	for (int i = 0; i < obj->get_shape_count(); i++) {
		if (obj->is_shape_disabled(i)) {
			continue;
		}

		Transform shape_xform = obj->get_transform() * obj->get_shape_transform(i);
		ShapeSW *shape = obj->get_shape(i);

		Vector3 point = shape->get_closest_point_to(shape_xform.affine_inverse().xform(p_point));
		point = shape_xform.xform(point);

		float dist = point.distance_to(p_point);
		if (dist < min_distance) {
			min_distance = dist;
			min_point = point;
		}
		shapes_found = true;
	}

	if (!shapes_found) {
		return obj->get_transform().origin; //no shapes found, use distance to origin.
	} else {
		return min_point;
	}
}

PhysicsDirectSpaceStateSW::PhysicsDirectSpaceStateSW() {
	space = nullptr;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////

int SpaceSW::_cull_aabb_for_body(BodySW *p_body, const AABB &p_aabb) {
	int amount = broadphase->cull_aabb(p_aabb, intersection_query_results, INTERSECTION_QUERY_MAX, intersection_query_subindex_results);

	for (int i = 0; i < amount; i++) {
		bool keep = true;

		if (intersection_query_results[i] == p_body) {
			keep = false;
		} else if (intersection_query_results[i]->get_type() == CollisionObjectSW::TYPE_AREA) {
			keep = false;
		} else if ((static_cast<BodySW *>(intersection_query_results[i])->test_collision_mask(p_body)) == 0) {
			keep = false;
		} else if (static_cast<BodySW *>(intersection_query_results[i])->has_exception(p_body->get_self()) || p_body->has_exception(intersection_query_results[i]->get_self())) {
			keep = false;
		}

		if (!keep) {
			if (i < amount - 1) {
				SWAP(intersection_query_results[i], intersection_query_results[amount - 1]);
				SWAP(intersection_query_subindex_results[i], intersection_query_subindex_results[amount - 1]);
			}

			amount--;
			i--;
		}
	}

	return amount;
}

int SpaceSW::test_body_ray_separation(BodySW *p_body, const Transform &p_transform, bool p_infinite_inertia, Vector3 &r_recover_motion, PhysicsServer::SeparationResult *r_results, int p_result_max, real_t p_margin) {
	AABB body_aabb;

	bool shapes_found = false;

	for (int i = 0; i < p_body->get_shape_count(); i++) {
		if (p_body->is_shape_disabled(i)) {
			continue;
		}

		if (!shapes_found) {
			body_aabb = p_body->get_shape_aabb(i);
			shapes_found = true;
		} else {
			body_aabb = body_aabb.merge(p_body->get_shape_aabb(i));
		}
	}

	if (!shapes_found) {
		return 0;
	}
	// Undo the currently transform the physics server is aware of and apply the provided one
	body_aabb = p_transform.xform(p_body->get_inv_transform().xform(body_aabb));
	body_aabb = body_aabb.grow(p_margin);

	Transform body_transform = p_transform;

	for (int i = 0; i < p_result_max; i++) {
		//reset results
		r_results[i].collision_depth = -1.0;
	}

	int rays_found = 0;

	{
		// raycast AND separate

		const int max_results = 32;
		int recover_attempts = 4;
		Vector3 sr[max_results * 2];
		PhysicsServerSW::CollCbkData cbk;
		cbk.max = max_results;
		PhysicsServerSW::CollCbkData *cbkptr = &cbk;
		CollisionSolverSW::CallbackResult cbkres = PhysicsServerSW::_shape_col_cbk;

		do {
			Vector3 recover_motion;

			bool collided = false;

			int amount = _cull_aabb_for_body(p_body, body_aabb);

			for (int j = 0; j < p_body->get_shape_count(); j++) {
				if (p_body->is_shape_disabled(j)) {
					continue;
				}

				ShapeSW *body_shape = p_body->get_shape(j);

				if (body_shape->get_type() != PhysicsServer::SHAPE_RAY) {
					continue;
				}

				Transform body_shape_xform = body_transform * p_body->get_shape_transform(j);

				for (int i = 0; i < amount; i++) {
					const CollisionObjectSW *col_obj = intersection_query_results[i];
					int shape_idx = intersection_query_subindex_results[i];

					cbk.amount = 0;
					cbk.ptr = sr;

					if (CollisionObjectSW::TYPE_BODY == col_obj->get_type()) {
						const BodySW *b = static_cast<const BodySW *>(col_obj);
						if (p_infinite_inertia && PhysicsServer::BODY_MODE_STATIC != b->get_mode() && PhysicsServer::BODY_MODE_KINEMATIC != b->get_mode()) {
							continue;
						}
					}

					ShapeSW *against_shape = col_obj->get_shape(shape_idx);
					if (CollisionSolverSW::solve_static(body_shape, body_shape_xform, against_shape, col_obj->get_transform() * col_obj->get_shape_transform(shape_idx), cbkres, cbkptr, nullptr, p_margin)) {
						if (cbk.amount > 0) {
							collided = true;
						}

						int ray_index = -1; //reuse shape
						for (int k = 0; k < rays_found; k++) {
							if (r_results[k].collision_local_shape == j) {
								ray_index = k;
							}
						}

						if (ray_index == -1 && rays_found < p_result_max) {
							ray_index = rays_found;
							rays_found++;
						}

						if (ray_index != -1) {
							PhysicsServer::SeparationResult &result = r_results[ray_index];

							for (int k = 0; k < cbk.amount; k++) {
								Vector3 a = sr[k * 2 + 0];
								Vector3 b = sr[k * 2 + 1];

								// Compute plane on b towards a.
								Vector3 n = (a - b).normalized();
								float d = n.dot(b);

								// Compute depth on recovered motion.
								float depth = n.dot(a + recover_motion) - d;

								// Apply recovery without margin.
								float separation_depth = depth - p_margin;
								if (separation_depth > 0.0) {
									// Only recover if there is penetration.
									recover_motion -= n * separation_depth;
								}

								if (depth > result.collision_depth) {
									result.collision_depth = depth;
									result.collision_point = b;
									result.collision_normal = -n;
									result.collision_local_shape = j;
									result.collider = col_obj->get_self();
									result.collider_id = col_obj->get_instance_id();
									result.collider_shape = shape_idx;
									if (col_obj->get_type() == CollisionObjectSW::TYPE_BODY) {
										BodySW *body = (BodySW *)col_obj;
<--- C-style pointer casting [+]
C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected. See also: https://www.securecoding.cert.org/confluence/display/cplusplus/EXP05-CPP.+Do+not+use+C-style+casts.

										Vector3 rel_vec = b - (body->get_transform().origin + body->get_center_of_mass());
										result.collider_velocity = body->get_linear_velocity() + (body->get_angular_velocity()).cross(rel_vec);
									}
								}
							}
						}
					}
				}
			}

			if (!collided || recover_motion == Vector3()) {
				break;
			}

			body_transform.origin += recover_motion;
			body_aabb.position += recover_motion;

			recover_attempts--;
		} while (recover_attempts);
	}

	r_recover_motion = body_transform.origin - p_transform.origin;
	return rays_found;
}

bool SpaceSW::test_body_motion(BodySW *p_body, const Transform &p_from, const Vector3 &p_motion, bool p_infinite_inertia, real_t p_margin, PhysicsServer::MotionResult *r_result, bool p_exclude_raycast_shapes, const Set<RID> &p_exclude) {
	//give me back regular physics engine logic
	//this is madness
	//and most people using this function will think
	//what it does is simpler than using physics
	//this took about a week to get right..
	//but is it right? who knows at this point..

	if (r_result) {
		r_result->collider_id = 0;
		r_result->collider_shape = 0;
	}

	AABB body_aabb;
	bool shapes_found = false;

	for (int i = 0; i < p_body->get_shape_count(); i++) {
		if (p_body->is_shape_disabled(i)) {
			continue;
		}

		if (!shapes_found) {
			body_aabb = p_body->get_shape_aabb(i);
			shapes_found = true;
		} else {
			body_aabb = body_aabb.merge(p_body->get_shape_aabb(i));
		}
	}

	if (!shapes_found) {
		if (r_result) {
			*r_result = PhysicsServer::MotionResult();
			r_result->motion = p_motion;
		}

		return false;
	}

	real_t margin = MAX(p_margin, TEST_MOTION_MARGIN_MIN_VALUE);

	// Undo the currently transform the physics server is aware of and apply the provided one
	body_aabb = p_from.xform(p_body->get_inv_transform().xform(body_aabb));
	body_aabb = body_aabb.grow(margin);

	real_t min_contact_depth = margin * TEST_MOTION_MIN_CONTACT_DEPTH_FACTOR;

	float motion_length = p_motion.length();
	Vector3 motion_normal = p_motion / motion_length;

	Transform body_transform = p_from;

	bool recovered = false;

	{
		//STEP 1, FREE BODY IF STUCK

		const int max_results = 32;
		int recover_attempts = 4;
		Vector3 sr[max_results * 2];

		do {
			PhysicsServerSW::CollCbkData cbk;
			cbk.max = max_results;
			cbk.amount = 0;
			cbk.ptr = sr;

			PhysicsServerSW::CollCbkData *cbkptr = &cbk;
			CollisionSolverSW::CallbackResult cbkres = PhysicsServerSW::_shape_col_cbk;

			bool collided = false;

			int amount = _cull_aabb_for_body(p_body, body_aabb);

			for (int j = 0; j < p_body->get_shape_count(); j++) {
				if (p_body->is_shape_disabled(j)) {
					continue;
				}

				Transform body_shape_xform = body_transform * p_body->get_shape_transform(j);
				ShapeSW *body_shape = p_body->get_shape(j);
				if (p_exclude_raycast_shapes && body_shape->get_type() == PhysicsServer::SHAPE_RAY) {
					continue;
				}

				for (int i = 0; i < amount; i++) {
					const CollisionObjectSW *col_obj = intersection_query_results[i];
					if (p_exclude.has(col_obj->get_self())) {
						continue;
					}
					int shape_idx = intersection_query_subindex_results[i];

					if (CollisionObjectSW::TYPE_BODY == col_obj->get_type()) {
						const BodySW *b = static_cast<const BodySW *>(col_obj);
						if (p_infinite_inertia && PhysicsServer::BODY_MODE_STATIC != b->get_mode() && PhysicsServer::BODY_MODE_KINEMATIC != b->get_mode()) {
							continue;
						}
					}

					if (CollisionSolverSW::solve_static(body_shape, body_shape_xform, col_obj->get_shape(shape_idx), col_obj->get_transform() * col_obj->get_shape_transform(shape_idx), cbkres, cbkptr, nullptr, margin)) {
						collided = cbk.amount > 0;
					}
				}
			}

			if (!collided) {
				break;
			}

			recovered = true;

			Vector3 recover_motion;
			for (int i = 0; i < cbk.amount; i++) {
				Vector3 a = sr[i * 2 + 0];
				Vector3 b = sr[i * 2 + 1];

				// Compute plane on b towards a.
				Vector3 n = (a - b).normalized();
				float d = n.dot(b);

				// Compute depth on recovered motion.
				float depth = n.dot(a + recover_motion) - d;
				if (depth > min_contact_depth + CMP_EPSILON) {
					// Only recover if there is penetration.
					recover_motion -= n * (depth - min_contact_depth) * 0.4;
				}
			}

			if (recover_motion == Vector3()) {
				collided = false;
				break;
			}

			body_transform.origin += recover_motion;
			body_aabb.position += recover_motion;

			recover_attempts--;

		} while (recover_attempts);
	}

	real_t safe = 1.0;
	real_t unsafe = 1.0;
	int best_shape = -1;

	{
		// STEP 2 ATTEMPT MOTION

		AABB motion_aabb = body_aabb;
		motion_aabb.position += p_motion;
		motion_aabb = motion_aabb.merge(body_aabb);

		int amount = _cull_aabb_for_body(p_body, motion_aabb);

		for (int j = 0; j < p_body->get_shape_count(); j++) {
			if (p_body->is_shape_disabled(j)) {
				continue;
			}

			Transform body_shape_xform = body_transform * p_body->get_shape_transform(j);
			ShapeSW *body_shape = p_body->get_shape(j);

			if (p_exclude_raycast_shapes && body_shape->get_type() == PhysicsServer::SHAPE_RAY) {
				continue;
			}

			Transform body_shape_xform_inv = body_shape_xform.affine_inverse();
			MotionShapeSW mshape;
			mshape.shape = body_shape;
			mshape.motion = body_shape_xform_inv.basis.xform(p_motion);

			bool stuck = false;

			real_t best_safe = 1;
			real_t best_unsafe = 1;

			for (int i = 0; i < amount; i++) {
				const CollisionObjectSW *col_obj = intersection_query_results[i];
				if (p_exclude.has(col_obj->get_self())) {
					continue;
				}
				int shape_idx = intersection_query_subindex_results[i];

				if (CollisionObjectSW::TYPE_BODY == col_obj->get_type()) {
					const BodySW *b = static_cast<const BodySW *>(col_obj);
					if (p_infinite_inertia && PhysicsServer::BODY_MODE_STATIC != b->get_mode() && PhysicsServer::BODY_MODE_KINEMATIC != b->get_mode()) {
						continue;
					}
				}

				//test initial overlap, does it collide if going all the way?
				Vector3 point_A, point_B;
				Vector3 sep_axis = motion_normal;

				Transform col_obj_xform = col_obj->get_transform() * col_obj->get_shape_transform(shape_idx);
				//test initial overlap, does it collide if going all the way?
				if (CollisionSolverSW::solve_distance(&mshape, body_shape_xform, col_obj->get_shape(shape_idx), col_obj_xform, point_A, point_B, motion_aabb, &sep_axis)) {
					continue;
				}
				sep_axis = motion_normal;

				if (!CollisionSolverSW::solve_distance(body_shape, body_shape_xform, col_obj->get_shape(shape_idx), col_obj_xform, point_A, point_B, motion_aabb, &sep_axis)) {
					stuck = true;
					break;
				}

				//just do kinematic solving
				real_t low = 0.0;
				real_t hi = 1.0;
				real_t fraction_coeff = 0.5;
				for (int k = 0; k < 8; k++) { //steps should be customizable..
					real_t fraction = low + (hi - low) * fraction_coeff;

					mshape.motion = body_shape_xform_inv.basis.xform(p_motion * fraction);

					Vector3 lA, lB;
					Vector3 sep = motion_normal; //important optimization for this to work fast enough
					bool collided = !CollisionSolverSW::solve_distance(&mshape, body_shape_xform, col_obj->get_shape(shape_idx), col_obj_xform, lA, lB, motion_aabb, &sep);

					if (collided) {
						hi = fraction;
						if ((k == 0) || (low > 0.0)) { // Did it not collide before?
							// When alternating or first iteration, use dichotomy.
							fraction_coeff = 0.5;
						} else {
							// When colliding again, converge faster towards low fraction
							// for more accurate results with long motions that collide near the start.
							fraction_coeff = 0.25;
						}
					} else {
						point_A = lA;
						point_B = lB;
						low = fraction;
						if ((k == 0) || (hi < 1.0)) { // Did it collide before?
							// When alternating or first iteration, use dichotomy.
							fraction_coeff = 0.5;
						} else {
							// When not colliding again, converge faster towards high fraction
							// for more accurate results with long motions that collide near the end.
							fraction_coeff = 0.75;
						}
					}
				}

				if (low < best_safe) {
					best_safe = low;
					best_unsafe = hi;
				}
			}

			if (stuck) {
				safe = 0;
				unsafe = 0;
				best_shape = j; //sadly it's the best
				break;
			}
			if (best_safe == 1.0) {
				continue;
			}
			if (best_safe < safe) {
				safe = best_safe;
				unsafe = best_unsafe;
				best_shape = j;
			}
		}
	}

	bool collided = false;

	if (recovered || (safe < 1)) {
		if (safe >= 1) {
			best_shape = -1; //no best shape with cast, reset to -1
		}

		//it collided, let's get the rest info in unsafe advance
		Transform ugt = body_transform;
		ugt.origin += p_motion * unsafe;

		_RestCallbackData rcd;
		rcd.best_len = 0;
		rcd.best_object = nullptr;
		rcd.best_shape = 0;

		// Allowed depth can't be lower than motion length, in order to handle contacts at low speed.
		rcd.min_allowed_depth = MIN(motion_length, min_contact_depth);

		body_aabb.position += p_motion * unsafe;
		int amount = _cull_aabb_for_body(p_body, body_aabb);

		int from_shape = best_shape != -1 ? best_shape : 0;
		int to_shape = best_shape != -1 ? best_shape + 1 : p_body->get_shape_count();

		for (int j = from_shape; j < to_shape; j++) {
			if (p_body->is_shape_disabled(j)) {
				continue;
			}

			Transform body_shape_xform = ugt * p_body->get_shape_transform(j);
			ShapeSW *body_shape = p_body->get_shape(j);

			if (p_exclude_raycast_shapes && body_shape->get_type() == PhysicsServer::SHAPE_RAY) {
				continue;
			}

			for (int i = 0; i < amount; i++) {
				const CollisionObjectSW *col_obj = intersection_query_results[i];
				if (p_exclude.has(col_obj->get_self())) {
					continue;
				}
				int shape_idx = intersection_query_subindex_results[i];

				if (CollisionObjectSW::TYPE_BODY == col_obj->get_type()) {
					const BodySW *b = static_cast<const BodySW *>(col_obj);
					if (p_infinite_inertia && PhysicsServer::BODY_MODE_STATIC != b->get_mode() && PhysicsServer::BODY_MODE_KINEMATIC != b->get_mode()) {
						continue;
					}
				}

				rcd.object = col_obj;
				rcd.shape = shape_idx;
				rcd.local_shape = j;
				bool sc = CollisionSolverSW::solve_static(body_shape, body_shape_xform, col_obj->get_shape(shape_idx), col_obj->get_transform() * col_obj->get_shape_transform(shape_idx), _rest_cbk_result, &rcd, nullptr, margin);
				if (!sc) {
					continue;
				}
			}
		}

		if (rcd.best_len != 0) {
			if (r_result) {
				r_result->collider = rcd.best_object->get_self();
				r_result->collider_id = rcd.best_object->get_instance_id();
				r_result->collider_shape = rcd.best_shape;
				r_result->collision_local_shape = rcd.best_local_shape;
				r_result->collision_normal = rcd.best_normal;
				r_result->collision_point = rcd.best_contact;
				r_result->collision_depth = rcd.best_len;
				r_result->collision_safe_fraction = safe;
				r_result->collision_unsafe_fraction = unsafe;
				//r_result->collider_metadata = rcd.best_object->get_shape_metadata(rcd.best_shape);

				const BodySW *body = static_cast<const BodySW *>(rcd.best_object);

				Vector3 rel_vec = rcd.best_contact - (body->get_transform().origin + body->get_center_of_mass());
				r_result->collider_velocity = body->get_linear_velocity() + (body->get_angular_velocity()).cross(rel_vec);

				r_result->motion = safe * p_motion;
				r_result->remainder = p_motion - safe * p_motion;
				r_result->motion += (body_transform.get_origin() - p_from.get_origin());
			}

			collided = true;
		}
	}

	if (!collided && r_result) {
		r_result->motion = p_motion;
		r_result->remainder = Vector3();
		r_result->motion += (body_transform.get_origin() - p_from.get_origin());
	}

	return collided;
}

// Assumes a valid collision pair, this should have been checked beforehand in the BVH or octree.
void *SpaceSW::_broadphase_pair(CollisionObjectSW *p_object_A, int p_subindex_A, CollisionObjectSW *p_object_B, int p_subindex_B, void *p_pair_data, void *p_self) {
	// An existing pair - nothing to do, pair is still valid.
	if (p_pair_data) {
		return p_pair_data;
	}

	// New pair
	CollisionObjectSW::Type type_A = p_object_A->get_type();
	CollisionObjectSW::Type type_B = p_object_B->get_type();
	if (type_A > type_B) {
		SWAP(p_object_A, p_object_B);
		SWAP(p_subindex_A, p_subindex_B);
		SWAP(type_A, type_B);
	}

	SpaceSW *self = (SpaceSW *)p_self;
<--- C-style pointer casting [+]
C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected. See also: https://www.securecoding.cert.org/confluence/display/cplusplus/EXP05-CPP.+Do+not+use+C-style+casts.

	self->collision_pairs++;

	if (type_A == CollisionObjectSW::TYPE_AREA) {
		AreaSW *area_a = static_cast<AreaSW *>(p_object_A);
		if (type_B == CollisionObjectSW::TYPE_AREA) {
			AreaSW *area_b = static_cast<AreaSW *>(p_object_B);
			Area2PairSW *area2_pair = memnew(Area2PairSW(area_b, p_subindex_B, area_a, p_subindex_A));
			return area2_pair;
		} else {
			BodySW *body_b = static_cast<BodySW *>(p_object_B);
			AreaPairSW *area_pair = memnew(AreaPairSW(body_b, p_subindex_B, area_a, p_subindex_A));
			return area_pair;
		}
	} else {
		BodySW *body_a = static_cast<BodySW *>(p_object_A);
		BodySW *body_b = static_cast<BodySW *>(p_object_B);
		BodyPairSW *body_pair = memnew(BodyPairSW(body_a, p_subindex_A, body_b, p_subindex_B));
		return body_pair;
	}

	return nullptr;
}

void SpaceSW::_broadphase_unpair(CollisionObjectSW *p_object_A, int p_subindex_A, CollisionObjectSW *p_object_B, int p_subindex_B, void *p_pair_data, void *p_self) {
	if (!p_pair_data) {
		return;
	}

	SpaceSW *self = (SpaceSW *)p_self;
<--- C-style pointer casting [+]
C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected. See also: https://www.securecoding.cert.org/confluence/display/cplusplus/EXP05-CPP.+Do+not+use+C-style+casts.
	self->collision_pairs--;
	ConstraintSW *c = (ConstraintSW *)p_pair_data;
<--- C-style pointer casting [+]
C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected. See also: https://www.securecoding.cert.org/confluence/display/cplusplus/EXP05-CPP.+Do+not+use+C-style+casts.
	memdelete(c);
}

const SelfList<BodySW>::List &SpaceSW::get_active_body_list() const {
	return active_list;
}
void SpaceSW::body_add_to_active_list(SelfList<BodySW> *p_body) {
	active_list.add(p_body);
}
void SpaceSW::body_remove_from_active_list(SelfList<BodySW> *p_body) {
	active_list.remove(p_body);
}

void SpaceSW::body_add_to_inertia_update_list(SelfList<BodySW> *p_body) {
	inertia_update_list.add(p_body);
}

void SpaceSW::body_remove_from_inertia_update_list(SelfList<BodySW> *p_body) {
	inertia_update_list.remove(p_body);
}

BroadPhaseSW *SpaceSW::get_broadphase() {
	return broadphase;
}

void SpaceSW::add_object(CollisionObjectSW *p_object) {
	ERR_FAIL_COND(objects.has(p_object));
	objects.insert(p_object);
}

void SpaceSW::remove_object(CollisionObjectSW *p_object) {
	ERR_FAIL_COND(!objects.has(p_object));
	objects.erase(p_object);
}

const Set<CollisionObjectSW *> &SpaceSW::get_objects() const {
	return objects;
}

void SpaceSW::body_add_to_state_query_list(SelfList<BodySW> *p_body) {
	state_query_list.add(p_body);
}
void SpaceSW::body_remove_from_state_query_list(SelfList<BodySW> *p_body) {
	state_query_list.remove(p_body);
}

void SpaceSW::area_add_to_monitor_query_list(SelfList<AreaSW> *p_area) {
	monitor_query_list.add(p_area);
}
void SpaceSW::area_remove_from_monitor_query_list(SelfList<AreaSW> *p_area) {
	monitor_query_list.remove(p_area);
}

void SpaceSW::area_add_to_moved_list(SelfList<AreaSW> *p_area) {
	area_moved_list.add(p_area);
}

void SpaceSW::area_remove_from_moved_list(SelfList<AreaSW> *p_area) {
	area_moved_list.remove(p_area);
}

const SelfList<AreaSW>::List &SpaceSW::get_moved_area_list() const {
	return area_moved_list;
}

void SpaceSW::call_queries() {
	while (state_query_list.first()) {
		BodySW *b = state_query_list.first()->self();
		state_query_list.remove(state_query_list.first());
		b->call_queries();
	}

	while (monitor_query_list.first()) {
		AreaSW *a = monitor_query_list.first()->self();
		monitor_query_list.remove(monitor_query_list.first());
		a->call_queries();
	}
}

void SpaceSW::setup() {
	contact_debug_count = 0;
	while (inertia_update_list.first()) {
		inertia_update_list.first()->self()->update_inertias();
		inertia_update_list.remove(inertia_update_list.first());
	}
}

void SpaceSW::update() {
	broadphase->update();
}

void SpaceSW::set_param(PhysicsServer::SpaceParameter p_param, real_t p_value) {
	switch (p_param) {
		case PhysicsServer::SPACE_PARAM_CONTACT_RECYCLE_RADIUS:
			contact_recycle_radius = p_value;
			break;
		case PhysicsServer::SPACE_PARAM_CONTACT_MAX_SEPARATION:
			contact_max_separation = p_value;
			break;
		case PhysicsServer::SPACE_PARAM_BODY_MAX_ALLOWED_PENETRATION:
			contact_max_allowed_penetration = p_value;
			break;
		case PhysicsServer::SPACE_PARAM_BODY_LINEAR_VELOCITY_SLEEP_THRESHOLD:
			body_linear_velocity_sleep_threshold = p_value;
			break;
		case PhysicsServer::SPACE_PARAM_BODY_ANGULAR_VELOCITY_SLEEP_THRESHOLD:
			body_angular_velocity_sleep_threshold = p_value;
			break;
		case PhysicsServer::SPACE_PARAM_BODY_TIME_TO_SLEEP:
			body_time_to_sleep = p_value;
			break;
		case PhysicsServer::SPACE_PARAM_BODY_ANGULAR_VELOCITY_DAMP_RATIO:
			body_angular_velocity_damp_ratio = p_value;
			break;
		case PhysicsServer::SPACE_PARAM_CONSTRAINT_DEFAULT_BIAS:
			constraint_bias = p_value;
			break;
	}
}

real_t SpaceSW::get_param(PhysicsServer::SpaceParameter p_param) const {
	switch (p_param) {
		case PhysicsServer::SPACE_PARAM_CONTACT_RECYCLE_RADIUS:
			return contact_recycle_radius;
		case PhysicsServer::SPACE_PARAM_CONTACT_MAX_SEPARATION:
			return contact_max_separation;
		case PhysicsServer::SPACE_PARAM_BODY_MAX_ALLOWED_PENETRATION:
			return contact_max_allowed_penetration;
		case PhysicsServer::SPACE_PARAM_BODY_LINEAR_VELOCITY_SLEEP_THRESHOLD:
			return body_linear_velocity_sleep_threshold;
		case PhysicsServer::SPACE_PARAM_BODY_ANGULAR_VELOCITY_SLEEP_THRESHOLD:
			return body_angular_velocity_sleep_threshold;
		case PhysicsServer::SPACE_PARAM_BODY_TIME_TO_SLEEP:
			return body_time_to_sleep;
		case PhysicsServer::SPACE_PARAM_BODY_ANGULAR_VELOCITY_DAMP_RATIO:
			return body_angular_velocity_damp_ratio;
		case PhysicsServer::SPACE_PARAM_CONSTRAINT_DEFAULT_BIAS:
			return constraint_bias;
	}
	return 0;
}

void SpaceSW::lock() {
	locked = true;
}

void SpaceSW::unlock() {
	locked = false;
}

bool SpaceSW::is_locked() const {
	return locked;
}

PhysicsDirectSpaceStateSW *SpaceSW::get_direct_state() {
	return direct_access;
}

SpaceSW::SpaceSW() {
	collision_pairs = 0;
	active_objects = 0;
	island_count = 0;
	contact_debug_count = 0;

	locked = false;
	contact_recycle_radius = 0.01;
<--- Variable 'contact_recycle_radius' is assigned in constructor body. Consider performing initialization in initialization list. [+]
When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'contact_recycle_radius' a value by passing the value to the constructor in the initialization list.
	contact_max_separation = 0.05;
<--- Variable 'contact_max_separation' is assigned in constructor body. Consider performing initialization in initialization list. [+]
When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'contact_max_separation' a value by passing the value to the constructor in the initialization list.
	contact_max_allowed_penetration = 0.01;
<--- Variable 'contact_max_allowed_penetration' is assigned in constructor body. Consider performing initialization in initialization list. [+]
When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'contact_max_allowed_penetration' a value by passing the value to the constructor in the initialization list.

	constraint_bias = 0.01;
<--- Variable 'constraint_bias' is assigned in constructor body. Consider performing initialization in initialization list. [+]
When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'constraint_bias' a value by passing the value to the constructor in the initialization list.
	body_linear_velocity_sleep_threshold = GLOBAL_DEF("physics/3d/sleep_threshold_linear", 0.1);
<--- Variable 'body_linear_velocity_sleep_threshold' is assigned in constructor body. Consider performing initialization in initialization list. [+]
When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'body_linear_velocity_sleep_threshold' a value by passing the value to the constructor in the initialization list.
	body_angular_velocity_sleep_threshold = GLOBAL_DEF("physics/3d/sleep_threshold_angular", (8.0 / 180.0 * Math_PI));
	body_time_to_sleep = GLOBAL_DEF("physics/3d/time_before_sleep", 0.5);
	ProjectSettings::get_singleton()->set_custom_property_info("physics/3d/time_before_sleep", PropertyInfo(Variant::REAL, "physics/3d/time_before_sleep", PROPERTY_HINT_RANGE, "0,5,0.01,or_greater"));
	body_angular_velocity_damp_ratio = 10;

	broadphase = BroadPhaseSW::create_func();
	broadphase->set_pair_callback(_broadphase_pair, this);
	broadphase->set_unpair_callback(_broadphase_unpair, this);
	area = nullptr;

	direct_access = memnew(PhysicsDirectSpaceStateSW);
	direct_access->space = this;

	for (int i = 0; i < ELAPSED_TIME_MAX; i++) {
		elapsed_time[i] = 0;
	}
}

SpaceSW::~SpaceSW() {
	memdelete(broadphase);
	memdelete(direct_access);
}