code: /*************************************************************************/
  /*  physics_server_2d.cpp                                                */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
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  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
  /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #include "physics_server_2d.h"
  
  #include "core/method_bind_ext.gen.inc"
  #include "core/print_string.h"
  #include "core/project_settings.h"
  
  PhysicsServer2D *PhysicsServer2D::singleton = NULL;
  
  void PhysicsDirectBodyState2D::integrate_forces() {
  
  	real_t step = get_step();
  	Vector2 lv = get_linear_velocity();
  	lv += get_total_gravity() * step;
  
  	real_t av = get_angular_velocity();
  
  	float damp = 1.0 - step * get_total_linear_damp();
  
  	if (damp < 0) // reached zero in the given time
  		damp = 0;
  
  	lv *= damp;
  
  	damp = 1.0 - step * get_total_angular_damp();
  
  	if (damp < 0) // reached zero in the given time
  		damp = 0;
  
  	av *= damp;
  
  	set_linear_velocity(lv);
  	set_angular_velocity(av);
  }
  
  Object *PhysicsDirectBodyState2D::get_contact_collider_object(int p_contact_idx) const {
  
  	ObjectID objid = get_contact_collider_id(p_contact_idx);
  	Object *obj = ObjectDB::get_instance(objid);
  	return obj;
  }
  
  PhysicsServer2D *PhysicsServer2D::get_singleton() {
  
  	return singleton;
  }
  
  void PhysicsDirectBodyState2D::_bind_methods() {
  
  	ClassDB::bind_method(D_METHOD("get_total_gravity"), &PhysicsDirectBodyState2D::get_total_gravity);
  	ClassDB::bind_method(D_METHOD("get_total_linear_damp"), &PhysicsDirectBodyState2D::get_total_linear_damp);
  	ClassDB::bind_method(D_METHOD("get_total_angular_damp"), &PhysicsDirectBodyState2D::get_total_angular_damp);
  
  	ClassDB::bind_method(D_METHOD("get_inverse_mass"), &PhysicsDirectBodyState2D::get_inverse_mass);
  	ClassDB::bind_method(D_METHOD("get_inverse_inertia"), &PhysicsDirectBodyState2D::get_inverse_inertia);
  
  	ClassDB::bind_method(D_METHOD("set_linear_velocity", "velocity"), &PhysicsDirectBodyState2D::set_linear_velocity);
  	ClassDB::bind_method(D_METHOD("get_linear_velocity"), &PhysicsDirectBodyState2D::get_linear_velocity);
  
  	ClassDB::bind_method(D_METHOD("set_angular_velocity", "velocity"), &PhysicsDirectBodyState2D::set_angular_velocity);
  	ClassDB::bind_method(D_METHOD("get_angular_velocity"), &PhysicsDirectBodyState2D::get_angular_velocity);
  
  	ClassDB::bind_method(D_METHOD("set_transform", "transform"), &PhysicsDirectBodyState2D::set_transform);
  	ClassDB::bind_method(D_METHOD("get_transform"), &PhysicsDirectBodyState2D::get_transform);
  
  	ClassDB::bind_method(D_METHOD("add_central_force", "force"), &PhysicsDirectBodyState2D::add_central_force);
  	ClassDB::bind_method(D_METHOD("add_force", "offset", "force"), &PhysicsDirectBodyState2D::add_force);
  	ClassDB::bind_method(D_METHOD("add_torque", "torque"), &PhysicsDirectBodyState2D::add_torque);
  	ClassDB::bind_method(D_METHOD("apply_central_impulse", "impulse"), &PhysicsDirectBodyState2D::apply_central_impulse);
  	ClassDB::bind_method(D_METHOD("apply_torque_impulse", "impulse"), &PhysicsDirectBodyState2D::apply_torque_impulse);
  	ClassDB::bind_method(D_METHOD("apply_impulse", "offset", "impulse"), &PhysicsDirectBodyState2D::apply_impulse);
  
  	ClassDB::bind_method(D_METHOD("set_sleep_state", "enabled"), &PhysicsDirectBodyState2D::set_sleep_state);
  	ClassDB::bind_method(D_METHOD("is_sleeping"), &PhysicsDirectBodyState2D::is_sleeping);
  
  	ClassDB::bind_method(D_METHOD("get_contact_count"), &PhysicsDirectBodyState2D::get_contact_count);
  
  	ClassDB::bind_method(D_METHOD("get_contact_local_position", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_local_position);
  	ClassDB::bind_method(D_METHOD("get_contact_local_normal", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_local_normal);
  	ClassDB::bind_method(D_METHOD("get_contact_local_shape", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_local_shape);
  	ClassDB::bind_method(D_METHOD("get_contact_collider", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_collider);
  	ClassDB::bind_method(D_METHOD("get_contact_collider_position", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_collider_position);
  	ClassDB::bind_method(D_METHOD("get_contact_collider_id", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_collider_id);
  	ClassDB::bind_method(D_METHOD("get_contact_collider_object", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_collider_object);
  	ClassDB::bind_method(D_METHOD("get_contact_collider_shape", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_collider_shape);
  	ClassDB::bind_method(D_METHOD("get_contact_collider_shape_metadata", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_collider_shape_metadata);
  	ClassDB::bind_method(D_METHOD("get_contact_collider_velocity_at_position", "contact_idx"), &PhysicsDirectBodyState2D::get_contact_collider_velocity_at_position);
  	ClassDB::bind_method(D_METHOD("get_step"), &PhysicsDirectBodyState2D::get_step);
  	ClassDB::bind_method(D_METHOD("integrate_forces"), &PhysicsDirectBodyState2D::integrate_forces);
  	ClassDB::bind_method(D_METHOD("get_space_state"), &PhysicsDirectBodyState2D::get_space_state);
  
  	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "step"), "", "get_step");
  	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "inverse_mass"), "", "get_inverse_mass");
  	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "inverse_inertia"), "", "get_inverse_inertia");
  	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "total_angular_damp"), "", "get_total_angular_damp");
  	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "total_linear_damp"), "", "get_total_linear_damp");
  	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "total_gravity"), "", "get_total_gravity");
  	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "angular_velocity"), "set_angular_velocity", "get_angular_velocity");
  	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "linear_velocity"), "set_linear_velocity", "get_linear_velocity");
  	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "sleeping"), "set_sleep_state", "is_sleeping");
  	ADD_PROPERTY(PropertyInfo(Variant::TRANSFORM2D, "transform"), "set_transform", "get_transform");
  }
  
  PhysicsDirectBodyState2D::PhysicsDirectBodyState2D() {}
  
  ///////////////////////////////////////////////////////
  
  void PhysicsShapeQueryParameters2D::set_shape(const RES &p_shape) {
  
  	ERR_FAIL_COND(p_shape.is_null());
  	shape = p_shape->get_rid();
  }
  
  void PhysicsShapeQueryParameters2D::set_shape_rid(const RID &p_shape) {
  
  	shape = p_shape;
  }
  
  RID PhysicsShapeQueryParameters2D::get_shape_rid() const {
  
  	return shape;
  }
  
  void PhysicsShapeQueryParameters2D::set_transform(const Transform2D &p_transform) {
  
  	transform = p_transform;
  }
  Transform2D PhysicsShapeQueryParameters2D::get_transform() const {
  
  	return transform;
  }
  
  void PhysicsShapeQueryParameters2D::set_motion(const Vector2 &p_motion) {
  
  	motion = p_motion;
  }
  Vector2 PhysicsShapeQueryParameters2D::get_motion() const {
  
  	return motion;
  }
  
  void PhysicsShapeQueryParameters2D::set_margin(float p_margin) {
  
  	margin = p_margin;
  }
  float PhysicsShapeQueryParameters2D::get_margin() const {
  
  	return margin;
  }
  
  void PhysicsShapeQueryParameters2D::set_collision_mask(int p_collision_mask) {
  
  	collision_mask = p_collision_mask;
  }
  int PhysicsShapeQueryParameters2D::get_collision_mask() const {
  
  	return collision_mask;
  }
  
  void PhysicsShapeQueryParameters2D::set_exclude(const Vector<RID> &p_exclude) {
  
  	exclude.clear();
  	for (int i = 0; i < p_exclude.size(); i++)
  		exclude.insert(p_exclude[i]);
  }
  
  Vector<RID> PhysicsShapeQueryParameters2D::get_exclude() const {
  
  	Vector<RID> ret;
  	ret.resize(exclude.size());
  	int idx = 0;
  	for (Set<RID>::Element *E = exclude.front(); E; E = E->next()) {
  		ret.write[idx] = E->get();
  	}
  	return ret;
  }
  
  void PhysicsShapeQueryParameters2D::set_collide_with_bodies(bool p_enable) {
  	collide_with_bodies = p_enable;
  }
  
  bool PhysicsShapeQueryParameters2D::is_collide_with_bodies_enabled() const {
  	return collide_with_bodies;
  }
  
  void PhysicsShapeQueryParameters2D::set_collide_with_areas(bool p_enable) {
  	collide_with_areas = p_enable;
  }
  
  bool PhysicsShapeQueryParameters2D::is_collide_with_areas_enabled() const {
  	return collide_with_areas;
  }
  
  void PhysicsShapeQueryParameters2D::_bind_methods() {
  
  	ClassDB::bind_method(D_METHOD("set_shape", "shape"), &PhysicsShapeQueryParameters2D::set_shape);
  	ClassDB::bind_method(D_METHOD("set_shape_rid", "shape"), &PhysicsShapeQueryParameters2D::set_shape_rid);
  	ClassDB::bind_method(D_METHOD("get_shape_rid"), &PhysicsShapeQueryParameters2D::get_shape_rid);
  
  	ClassDB::bind_method(D_METHOD("set_transform", "transform"), &PhysicsShapeQueryParameters2D::set_transform);
  	ClassDB::bind_method(D_METHOD("get_transform"), &PhysicsShapeQueryParameters2D::get_transform);
  
  	ClassDB::bind_method(D_METHOD("set_motion", "motion"), &PhysicsShapeQueryParameters2D::set_motion);
  	ClassDB::bind_method(D_METHOD("get_motion"), &PhysicsShapeQueryParameters2D::get_motion);
  
  	ClassDB::bind_method(D_METHOD("set_margin", "margin"), &PhysicsShapeQueryParameters2D::set_margin);
  	ClassDB::bind_method(D_METHOD("get_margin"), &PhysicsShapeQueryParameters2D::get_margin);
  
  	ClassDB::bind_method(D_METHOD("set_collision_layer", "collision_layer"), &PhysicsShapeQueryParameters2D::set_collision_mask);
  	ClassDB::bind_method(D_METHOD("get_collision_layer"), &PhysicsShapeQueryParameters2D::get_collision_mask);
  
  	ClassDB::bind_method(D_METHOD("set_exclude", "exclude"), &PhysicsShapeQueryParameters2D::set_exclude);
  	ClassDB::bind_method(D_METHOD("get_exclude"), &PhysicsShapeQueryParameters2D::get_exclude);
  
  	ClassDB::bind_method(D_METHOD("set_collide_with_bodies", "enable"), &PhysicsShapeQueryParameters2D::set_collide_with_bodies);
  	ClassDB::bind_method(D_METHOD("is_collide_with_bodies_enabled"), &PhysicsShapeQueryParameters2D::is_collide_with_bodies_enabled);
  
  	ClassDB::bind_method(D_METHOD("set_collide_with_areas", "enable"), &PhysicsShapeQueryParameters2D::set_collide_with_areas);
  	ClassDB::bind_method(D_METHOD("is_collide_with_areas_enabled"), &PhysicsShapeQueryParameters2D::is_collide_with_areas_enabled);
  
  	ADD_PROPERTY(PropertyInfo(Variant::INT, "collision_layer", PROPERTY_HINT_LAYERS_2D_PHYSICS), "set_collision_layer", "get_collision_layer");
  	ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "exclude", PROPERTY_HINT_NONE, itos(Variant::_RID) + ":"), "set_exclude", "get_exclude");
  	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "margin", PROPERTY_HINT_RANGE, "0,100,0.01"), "set_margin", "get_margin");
  	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "motion"), "set_motion", "get_motion");
  	//ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "shape", PROPERTY_HINT_RESOURCE_TYPE, "Shape2D"), "set_shape", ""); // FIXME: Lacks a getter
  	ADD_PROPERTY(PropertyInfo(Variant::_RID, "shape_rid"), "set_shape_rid", "get_shape_rid");
  	ADD_PROPERTY(PropertyInfo(Variant::TRANSFORM2D, "transform"), "set_transform", "get_transform");
  	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "collide_with_bodies"), "set_collide_with_bodies", "is_collide_with_bodies_enabled");
  	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "collide_with_areas"), "set_collide_with_areas", "is_collide_with_areas_enabled");
  }
  
  PhysicsShapeQueryParameters2D::PhysicsShapeQueryParameters2D() {
  
  	margin = 0;
  	collision_mask = 0x7FFFFFFF;
  	collide_with_bodies = true;
  	collide_with_areas = false;
  }
  
  Dictionary PhysicsDirectSpaceState2D::_intersect_ray(const Vector2 &p_from, const Vector2 &p_to, const Vector<RID> &p_exclude, uint32_t p_layers, bool p_collide_with_bodies, bool p_collide_with_areas) {
  
  	RayResult inters;
  	Set<RID> exclude;
  	for (int i = 0; i < p_exclude.size(); i++)
  		exclude.insert(p_exclude[i]);
  
  	bool res = intersect_ray(p_from, p_to, inters, exclude, p_layers, p_collide_with_bodies, p_collide_with_areas);
  
  	if (!res)
  		return Dictionary();
  
  	Dictionary d;
  	d["position"] = inters.position;
  	d["normal"] = inters.normal;
  	d["collider_id"] = inters.collider_id;
  	d["collider"] = inters.collider;
  	d["shape"] = inters.shape;
  	d["rid"] = inters.rid;
  	d["metadata"] = inters.metadata;
  
  	return d;
  }
  
  Array PhysicsDirectSpaceState2D::_intersect_shape(const Ref<PhysicsShapeQueryParameters2D> &p_shape_query, int p_max_results) {
  
  	ERR_FAIL_COND_V(!p_shape_query.is_valid(), Array());
  
  	Vector<ShapeResult> sr;
  	sr.resize(p_max_results);
  	int rc = intersect_shape(p_shape_query->shape, p_shape_query->transform, p_shape_query->motion, p_shape_query->margin, sr.ptrw(), sr.size(), p_shape_query->exclude, p_shape_query->collision_mask, p_shape_query->collide_with_bodies, p_shape_query->collide_with_areas);
  	Array ret;
  	ret.resize(rc);
  	for (int i = 0; i < rc; i++) {
  
  		Dictionary d;
  		d["rid"] = sr[i].rid;
  		d["collider_id"] = sr[i].collider_id;
  		d["collider"] = sr[i].collider;
  		d["shape"] = sr[i].shape;
  		d["metadata"] = sr[i].metadata;
  		ret[i] = d;
  	}
  
  	return ret;
  }
  
  Array PhysicsDirectSpaceState2D::_cast_motion(const Ref<PhysicsShapeQueryParameters2D> &p_shape_query) {
  
  	ERR_FAIL_COND_V(!p_shape_query.is_valid(), Array());
  
  	float closest_safe, closest_unsafe;
  	bool res = cast_motion(p_shape_query->shape, p_shape_query->transform, p_shape_query->motion, p_shape_query->margin, closest_safe, closest_unsafe, p_shape_query->exclude, p_shape_query->collision_mask, p_shape_query->collide_with_bodies, p_shape_query->collide_with_areas);
  	if (!res)
  		return Array();
  	Array ret;
  	ret.resize(2);
  	ret[0] = closest_safe;
  	ret[1] = closest_unsafe;
  	return ret;
  }
  
  Array PhysicsDirectSpaceState2D::_intersect_point_impl(const Vector2 &p_point, int p_max_results, const Vector<RID> &p_exclude, uint32_t p_layers, bool p_collide_with_bodies, bool p_collide_with_areas, bool p_filter_by_canvas, ObjectID p_canvas_instance_id) {
  
  	Set<RID> exclude;
  	for (int i = 0; i < p_exclude.size(); i++)
  		exclude.insert(p_exclude[i]);
  
  	Vector<ShapeResult> ret;
  	ret.resize(p_max_results);
  
  	int rc;
  	if (p_filter_by_canvas)
  		rc = intersect_point(p_point, ret.ptrw(), ret.size(), exclude, p_layers, p_collide_with_bodies, p_collide_with_areas);
  	else
  		rc = intersect_point_on_canvas(p_point, p_canvas_instance_id, ret.ptrw(), ret.size(), exclude, p_layers, p_collide_with_bodies, p_collide_with_areas);
  
  	if (rc == 0)
  		return Array();
  
  	Array r;
  	r.resize(rc);
  	for (int i = 0; i < rc; i++) {
  
  		Dictionary d;
  		d["rid"] = ret[i].rid;
  		d["collider_id"] = ret[i].collider_id;
  		d["collider"] = ret[i].collider;
  		d["shape"] = ret[i].shape;
  		d["metadata"] = ret[i].metadata;
  		r[i] = d;
  	}
  	return r;
  }
  
  Array PhysicsDirectSpaceState2D::_intersect_point(const Vector2 &p_point, int p_max_results, const Vector<RID> &p_exclude, uint32_t p_layers, bool p_collide_with_bodies, bool p_collide_with_areas) {
  
  	return _intersect_point_impl(p_point, p_max_results, p_exclude, p_layers, p_collide_with_bodies, p_collide_with_areas);
  }
  
  Array PhysicsDirectSpaceState2D::_intersect_point_on_canvas(const Vector2 &p_point, ObjectID p_canvas_intance_id, int p_max_results, const Vector<RID> &p_exclude, uint32_t p_layers, bool p_collide_with_bodies, bool p_collide_with_areas) {
  
  	return _intersect_point_impl(p_point, p_max_results, p_exclude, p_layers, p_collide_with_bodies, p_collide_with_areas, true, p_canvas_intance_id);
  }
  
  Array PhysicsDirectSpaceState2D::_collide_shape(const Ref<PhysicsShapeQueryParameters2D> &p_shape_query, int p_max_results) {
  
  	ERR_FAIL_COND_V(!p_shape_query.is_valid(), Array());
  
  	Vector<Vector2> ret;
  	ret.resize(p_max_results * 2);
  	int rc = 0;
  	bool res = collide_shape(p_shape_query->shape, p_shape_query->transform, p_shape_query->motion, p_shape_query->margin, ret.ptrw(), p_max_results, rc, p_shape_query->exclude, p_shape_query->collision_mask, p_shape_query->collide_with_bodies, p_shape_query->collide_with_areas);
  	if (!res)
  		return Array();
  	Array r;
  	r.resize(rc * 2);
  	for (int i = 0; i < rc * 2; i++)
  		r[i] = ret[i];
  	return r;
  }
  Dictionary PhysicsDirectSpaceState2D::_get_rest_info(const Ref<PhysicsShapeQueryParameters2D> &p_shape_query) {
  
  	ERR_FAIL_COND_V(!p_shape_query.is_valid(), Dictionary());
  
  	ShapeRestInfo sri;
  
  	bool res = rest_info(p_shape_query->shape, p_shape_query->transform, p_shape_query->motion, p_shape_query->margin, &sri, p_shape_query->exclude, p_shape_query->collision_mask, p_shape_query->collide_with_bodies, p_shape_query->collide_with_areas);
  	Dictionary r;
  	if (!res)
  		return r;
  
  	r["point"] = sri.point;
  	r["normal"] = sri.normal;
  	r["rid"] = sri.rid;
  	r["collider_id"] = sri.collider_id;
  	r["shape"] = sri.shape;
  	r["linear_velocity"] = sri.linear_velocity;
  	r["metadata"] = sri.metadata;
  
  	return r;
  }
  
  PhysicsDirectSpaceState2D::PhysicsDirectSpaceState2D() {
  }
  
  void PhysicsDirectSpaceState2D::_bind_methods() {
  
  	ClassDB::bind_method(D_METHOD("intersect_point", "point", "max_results", "exclude", "collision_layer", "collide_with_bodies", "collide_with_areas"), &PhysicsDirectSpaceState2D::_intersect_point, DEFVAL(32), DEFVAL(Array()), DEFVAL(0x7FFFFFFF), DEFVAL(true), DEFVAL(false));
  	ClassDB::bind_method(D_METHOD("intersect_point_on_canvas", "point", "canvas_instance_id", "max_results", "exclude", "collision_layer", "collide_with_bodies", "collide_with_areas"), &PhysicsDirectSpaceState2D::_intersect_point_on_canvas, DEFVAL(32), DEFVAL(Array()), DEFVAL(0x7FFFFFFF), DEFVAL(true), DEFVAL(false));
  	ClassDB::bind_method(D_METHOD("intersect_ray", "from", "to", "exclude", "collision_layer", "collide_with_bodies", "collide_with_areas"), &PhysicsDirectSpaceState2D::_intersect_ray, DEFVAL(Array()), DEFVAL(0x7FFFFFFF), DEFVAL(true), DEFVAL(false));
  	ClassDB::bind_method(D_METHOD("intersect_shape", "shape", "max_results"), &PhysicsDirectSpaceState2D::_intersect_shape, DEFVAL(32));
  	ClassDB::bind_method(D_METHOD("cast_motion", "shape"), &PhysicsDirectSpaceState2D::_cast_motion);
  	ClassDB::bind_method(D_METHOD("collide_shape", "shape", "max_results"), &PhysicsDirectSpaceState2D::_collide_shape, DEFVAL(32));
  	ClassDB::bind_method(D_METHOD("get_rest_info", "shape"), &PhysicsDirectSpaceState2D::_get_rest_info);
  }
  
  int PhysicsShapeQueryResult2D::get_result_count() const {
  
  	return result.size();
  }
  RID PhysicsShapeQueryResult2D::get_result_rid(int p_idx) const {
  
  	return result[p_idx].rid;
  }
  ObjectID PhysicsShapeQueryResult2D::get_result_object_id(int p_idx) const {
  
  	return result[p_idx].collider_id;
  }
  Object *PhysicsShapeQueryResult2D::get_result_object(int p_idx) const {
  
  	return result[p_idx].collider;
  }
  int PhysicsShapeQueryResult2D::get_result_object_shape(int p_idx) const {
  
  	return result[p_idx].shape;
  }
  
  PhysicsShapeQueryResult2D::PhysicsShapeQueryResult2D() {
  }
  
  void PhysicsShapeQueryResult2D::_bind_methods() {
  
  	ClassDB::bind_method(D_METHOD("get_result_count"), &PhysicsShapeQueryResult2D::get_result_count);
  	ClassDB::bind_method(D_METHOD("get_result_rid", "idx"), &PhysicsShapeQueryResult2D::get_result_rid);
  	ClassDB::bind_method(D_METHOD("get_result_object_id", "idx"), &PhysicsShapeQueryResult2D::get_result_object_id);
  	ClassDB::bind_method(D_METHOD("get_result_object", "idx"), &PhysicsShapeQueryResult2D::get_result_object);
  	ClassDB::bind_method(D_METHOD("get_result_object_shape", "idx"), &PhysicsShapeQueryResult2D::get_result_object_shape);
  }
  
  ///////////////////////////////
  
  Vector2 PhysicsTestMotionResult2D::get_motion() const {
  
  	return result.motion;
  }
  Vector2 PhysicsTestMotionResult2D::get_motion_remainder() const {
  
  	return result.remainder;
  }
  
  Vector2 PhysicsTestMotionResult2D::get_collision_point() const {
  
  	return result.collision_point;
  }
  Vector2 PhysicsTestMotionResult2D::get_collision_normal() const {
  
  	return result.collision_normal;
  }
  Vector2 PhysicsTestMotionResult2D::get_collider_velocity() const {
  
  	return result.collider_velocity;
  }
  ObjectID PhysicsTestMotionResult2D::get_collider_id() const {
  
  	return result.collider_id;
  }
  RID PhysicsTestMotionResult2D::get_collider_rid() const {
  
  	return result.collider;
  }
  
  Object *PhysicsTestMotionResult2D::get_collider() const {
  	return ObjectDB::get_instance(result.collider_id);
  }
  
  int PhysicsTestMotionResult2D::get_collider_shape() const {
  
  	return result.collider_shape;
  }
  
  void PhysicsTestMotionResult2D::_bind_methods() {
  
  	ClassDB::bind_method(D_METHOD("get_motion"), &PhysicsTestMotionResult2D::get_motion);
  	ClassDB::bind_method(D_METHOD("get_motion_remainder"), &PhysicsTestMotionResult2D::get_motion_remainder);
  	ClassDB::bind_method(D_METHOD("get_collision_point"), &PhysicsTestMotionResult2D::get_collision_point);
  	ClassDB::bind_method(D_METHOD("get_collision_normal"), &PhysicsTestMotionResult2D::get_collision_normal);
  	ClassDB::bind_method(D_METHOD("get_collider_velocity"), &PhysicsTestMotionResult2D::get_collider_velocity);
  	ClassDB::bind_method(D_METHOD("get_collider_id"), &PhysicsTestMotionResult2D::get_collider_id);
  	ClassDB::bind_method(D_METHOD("get_collider_rid"), &PhysicsTestMotionResult2D::get_collider_rid);
  	ClassDB::bind_method(D_METHOD("get_collider"), &PhysicsTestMotionResult2D::get_collider);
  	ClassDB::bind_method(D_METHOD("get_collider_shape"), &PhysicsTestMotionResult2D::get_collider_shape);
  
  	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "motion"), "", "get_motion");
  	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "motion_remainder"), "", "get_motion_remainder");
  	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "collision_point"), "", "get_collision_point");
  	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "collision_normal"), "", "get_collision_normal");
  	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "collider_velocity"), "", "get_collider_velocity");
  	ADD_PROPERTY(PropertyInfo(Variant::INT, "collider_id", PROPERTY_HINT_OBJECT_ID), "", "get_collider_id");
  	ADD_PROPERTY(PropertyInfo(Variant::_RID, "collider_rid"), "", "get_collider_rid");
  	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "collider"), "", "get_collider");
  	ADD_PROPERTY(PropertyInfo(Variant::INT, "collider_shape"), "", "get_collider_shape");
  }
  
  PhysicsTestMotionResult2D::PhysicsTestMotionResult2D() {
  
  	colliding = false;
  
  	result.collider_shape = 0;
  }
  
  ///////////////////////////////////////
  
  bool PhysicsServer2D::_body_test_motion(RID p_body, const Transform2D &p_from, const Vector2 &p_motion, bool p_infinite_inertia, float p_margin, const Ref<PhysicsTestMotionResult2D> &p_result) {
  
  	MotionResult *r = NULL;
  	if (p_result.is_valid())
  		r = p_result->get_result_ptr();
  	return body_test_motion(p_body, p_from, p_motion, p_infinite_inertia, p_margin, r);
  }
  
  void PhysicsServer2D::_bind_methods() {
  
  	ClassDB::bind_method(D_METHOD("line_shape_create"), &PhysicsServer2D::line_shape_create);
  	ClassDB::bind_method(D_METHOD("ray_shape_create"), &PhysicsServer2D::ray_shape_create);
  	ClassDB::bind_method(D_METHOD("segment_shape_create"), &PhysicsServer2D::segment_shape_create);
  	ClassDB::bind_method(D_METHOD("circle_shape_create"), &PhysicsServer2D::circle_shape_create);
  	ClassDB::bind_method(D_METHOD("rectangle_shape_create"), &PhysicsServer2D::rectangle_shape_create);
  	ClassDB::bind_method(D_METHOD("capsule_shape_create"), &PhysicsServer2D::capsule_shape_create);
  	ClassDB::bind_method(D_METHOD("convex_polygon_shape_create"), &PhysicsServer2D::convex_polygon_shape_create);
  	ClassDB::bind_method(D_METHOD("concave_polygon_shape_create"), &PhysicsServer2D::concave_polygon_shape_create);
  
  	ClassDB::bind_method(D_METHOD("shape_set_data", "shape", "data"), &PhysicsServer2D::shape_set_data);
  
  	ClassDB::bind_method(D_METHOD("shape_get_type", "shape"), &PhysicsServer2D::shape_get_type);
  	ClassDB::bind_method(D_METHOD("shape_get_data", "shape"), &PhysicsServer2D::shape_get_data);
  
  	ClassDB::bind_method(D_METHOD("space_create"), &PhysicsServer2D::space_create);
  	ClassDB::bind_method(D_METHOD("space_set_active", "space", "active"), &PhysicsServer2D::space_set_active);
  	ClassDB::bind_method(D_METHOD("space_is_active", "space"), &PhysicsServer2D::space_is_active);
  	ClassDB::bind_method(D_METHOD("space_set_param", "space", "param", "value"), &PhysicsServer2D::space_set_param);
  	ClassDB::bind_method(D_METHOD("space_get_param", "space", "param"), &PhysicsServer2D::space_get_param);
  	ClassDB::bind_method(D_METHOD("space_get_direct_state", "space"), &PhysicsServer2D::space_get_direct_state);
  
  	ClassDB::bind_method(D_METHOD("area_create"), &PhysicsServer2D::area_create);
  	ClassDB::bind_method(D_METHOD("area_set_space", "area", "space"), &PhysicsServer2D::area_set_space);
  	ClassDB::bind_method(D_METHOD("area_get_space", "area"), &PhysicsServer2D::area_get_space);
  
  	ClassDB::bind_method(D_METHOD("area_set_space_override_mode", "area", "mode"), &PhysicsServer2D::area_set_space_override_mode);
  	ClassDB::bind_method(D_METHOD("area_get_space_override_mode", "area"), &PhysicsServer2D::area_get_space_override_mode);
  
  	ClassDB::bind_method(D_METHOD("area_add_shape", "area", "shape", "transform", "disabled"), &PhysicsServer2D::area_add_shape, DEFVAL(Transform2D()), DEFVAL(false));
  	ClassDB::bind_method(D_METHOD("area_set_shape", "area", "shape_idx", "shape"), &PhysicsServer2D::area_set_shape);
  	ClassDB::bind_method(D_METHOD("area_set_shape_transform", "area", "shape_idx", "transform"), &PhysicsServer2D::area_set_shape_transform);
  	ClassDB::bind_method(D_METHOD("area_set_shape_disabled", "area", "shape_idx", "disabled"), &PhysicsServer2D::area_set_shape_disabled);
  
  	ClassDB::bind_method(D_METHOD("area_get_shape_count", "area"), &PhysicsServer2D::area_get_shape_count);
  	ClassDB::bind_method(D_METHOD("area_get_shape", "area", "shape_idx"), &PhysicsServer2D::area_get_shape);
  	ClassDB::bind_method(D_METHOD("area_get_shape_transform", "area", "shape_idx"), &PhysicsServer2D::area_get_shape_transform);
  
  	ClassDB::bind_method(D_METHOD("area_remove_shape", "area", "shape_idx"), &PhysicsServer2D::area_remove_shape);
  	ClassDB::bind_method(D_METHOD("area_clear_shapes", "area"), &PhysicsServer2D::area_clear_shapes);
  
  	ClassDB::bind_method(D_METHOD("area_set_collision_layer", "area", "layer"), &PhysicsServer2D::area_set_collision_layer);
  	ClassDB::bind_method(D_METHOD("area_set_collision_mask", "area", "mask"), &PhysicsServer2D::area_set_collision_mask);
  
  	ClassDB::bind_method(D_METHOD("area_set_param", "area", "param", "value"), &PhysicsServer2D::area_set_param);
  	ClassDB::bind_method(D_METHOD("area_set_transform", "area", "transform"), &PhysicsServer2D::area_set_transform);
  
  	ClassDB::bind_method(D_METHOD("area_get_param", "area", "param"), &PhysicsServer2D::area_get_param);
  	ClassDB::bind_method(D_METHOD("area_get_transform", "area"), &PhysicsServer2D::area_get_transform);
  
  	ClassDB::bind_method(D_METHOD("area_attach_object_instance_id", "area", "id"), &PhysicsServer2D::area_attach_object_instance_id);
  	ClassDB::bind_method(D_METHOD("area_get_object_instance_id", "area"), &PhysicsServer2D::area_get_object_instance_id);
  
  	ClassDB::bind_method(D_METHOD("area_attach_canvas_instance_id", "area", "id"), &PhysicsServer2D::area_attach_canvas_instance_id);
  	ClassDB::bind_method(D_METHOD("area_get_canvas_instance_id", "area"), &PhysicsServer2D::area_get_canvas_instance_id);
  
  	ClassDB::bind_method(D_METHOD("area_set_monitor_callback", "area", "receiver", "method"), &PhysicsServer2D::area_set_monitor_callback);
  	ClassDB::bind_method(D_METHOD("area_set_area_monitor_callback", "area", "receiver", "method"), &PhysicsServer2D::area_set_area_monitor_callback);
  	ClassDB::bind_method(D_METHOD("area_set_monitorable", "area", "monitorable"), &PhysicsServer2D::area_set_monitorable);
  
  	ClassDB::bind_method(D_METHOD("body_create"), &PhysicsServer2D::body_create);
  
  	ClassDB::bind_method(D_METHOD("body_set_space", "body", "space"), &PhysicsServer2D::body_set_space);
  	ClassDB::bind_method(D_METHOD("body_get_space", "body"), &PhysicsServer2D::body_get_space);
  
  	ClassDB::bind_method(D_METHOD("body_set_mode", "body", "mode"), &PhysicsServer2D::body_set_mode);
  	ClassDB::bind_method(D_METHOD("body_get_mode", "body"), &PhysicsServer2D::body_get_mode);
  
  	ClassDB::bind_method(D_METHOD("body_add_shape", "body", "shape", "transform", "disabled"), &PhysicsServer2D::body_add_shape, DEFVAL(Transform2D()), DEFVAL(false));
  	ClassDB::bind_method(D_METHOD("body_set_shape", "body", "shape_idx", "shape"), &PhysicsServer2D::body_set_shape);
  	ClassDB::bind_method(D_METHOD("body_set_shape_transform", "body", "shape_idx", "transform"), &PhysicsServer2D::body_set_shape_transform);
  	ClassDB::bind_method(D_METHOD("body_set_shape_metadata", "body", "shape_idx", "metadata"), &PhysicsServer2D::body_set_shape_metadata);
  
  	ClassDB::bind_method(D_METHOD("body_get_shape_count", "body"), &PhysicsServer2D::body_get_shape_count);
  	ClassDB::bind_method(D_METHOD("body_get_shape", "body", "shape_idx"), &PhysicsServer2D::body_get_shape);
  	ClassDB::bind_method(D_METHOD("body_get_shape_transform", "body", "shape_idx"), &PhysicsServer2D::body_get_shape_transform);
  	ClassDB::bind_method(D_METHOD("body_get_shape_metadata", "body", "shape_idx"), &PhysicsServer2D::body_get_shape_metadata);
  
  	ClassDB::bind_method(D_METHOD("body_remove_shape", "body", "shape_idx"), &PhysicsServer2D::body_remove_shape);
  	ClassDB::bind_method(D_METHOD("body_clear_shapes", "body"), &PhysicsServer2D::body_clear_shapes);
  
  	ClassDB::bind_method(D_METHOD("body_set_shape_disabled", "body", "shape_idx", "disabled"), &PhysicsServer2D::body_set_shape_disabled);
  	ClassDB::bind_method(D_METHOD("body_set_shape_as_one_way_collision", "body", "shape_idx", "enable", "margin"), &PhysicsServer2D::body_set_shape_as_one_way_collision);
  
  	ClassDB::bind_method(D_METHOD("body_attach_object_instance_id", "body", "id"), &PhysicsServer2D::body_attach_object_instance_id);
  	ClassDB::bind_method(D_METHOD("body_get_object_instance_id", "body"), &PhysicsServer2D::body_get_object_instance_id);
  
  	ClassDB::bind_method(D_METHOD("body_attach_canvas_instance_id", "body", "id"), &PhysicsServer2D::body_attach_canvas_instance_id);
  	ClassDB::bind_method(D_METHOD("body_get_canvas_instance_id", "body"), &PhysicsServer2D::body_get_canvas_instance_id);
  
  	ClassDB::bind_method(D_METHOD("body_set_continuous_collision_detection_mode", "body", "mode"), &PhysicsServer2D::body_set_continuous_collision_detection_mode);
  	ClassDB::bind_method(D_METHOD("body_get_continuous_collision_detection_mode", "body"), &PhysicsServer2D::body_get_continuous_collision_detection_mode);
  
  	ClassDB::bind_method(D_METHOD("body_set_collision_layer", "body", "layer"), &PhysicsServer2D::body_set_collision_layer);
  	ClassDB::bind_method(D_METHOD("body_get_collision_layer", "body"), &PhysicsServer2D::body_get_collision_layer);
  
  	ClassDB::bind_method(D_METHOD("body_set_collision_mask", "body", "mask"), &PhysicsServer2D::body_set_collision_mask);
  	ClassDB::bind_method(D_METHOD("body_get_collision_mask", "body"), &PhysicsServer2D::body_get_collision_mask);
  
  	ClassDB::bind_method(D_METHOD("body_set_param", "body", "param", "value"), &PhysicsServer2D::body_set_param);
  	ClassDB::bind_method(D_METHOD("body_get_param", "body", "param"), &PhysicsServer2D::body_get_param);
  
  	ClassDB::bind_method(D_METHOD("body_set_state", "body", "state", "value"), &PhysicsServer2D::body_set_state);
  	ClassDB::bind_method(D_METHOD("body_get_state", "body", "state"), &PhysicsServer2D::body_get_state);
  
  	ClassDB::bind_method(D_METHOD("body_apply_central_impulse", "body", "impulse"), &PhysicsServer2D::body_apply_central_impulse);
  	ClassDB::bind_method(D_METHOD("body_apply_torque_impulse", "body", "impulse"), &PhysicsServer2D::body_apply_torque_impulse);
  	ClassDB::bind_method(D_METHOD("body_apply_impulse", "body", "position", "impulse"), &PhysicsServer2D::body_apply_impulse);
  	ClassDB::bind_method(D_METHOD("body_add_central_force", "body", "force"), &PhysicsServer2D::body_add_central_force);
  	ClassDB::bind_method(D_METHOD("body_add_force", "body", "offset", "force"), &PhysicsServer2D::body_add_force);
  	ClassDB::bind_method(D_METHOD("body_add_torque", "body", "torque"), &PhysicsServer2D::body_add_torque);
  	ClassDB::bind_method(D_METHOD("body_set_axis_velocity", "body", "axis_velocity"), &PhysicsServer2D::body_set_axis_velocity);
  
  	ClassDB::bind_method(D_METHOD("body_add_collision_exception", "body", "excepted_body"), &PhysicsServer2D::body_add_collision_exception);
  	ClassDB::bind_method(D_METHOD("body_remove_collision_exception", "body", "excepted_body"), &PhysicsServer2D::body_remove_collision_exception);
  
  	ClassDB::bind_method(D_METHOD("body_set_max_contacts_reported", "body", "amount"), &PhysicsServer2D::body_set_max_contacts_reported);
  	ClassDB::bind_method(D_METHOD("body_get_max_contacts_reported", "body"), &PhysicsServer2D::body_get_max_contacts_reported);
  
  	ClassDB::bind_method(D_METHOD("body_set_omit_force_integration", "body", "enable"), &PhysicsServer2D::body_set_omit_force_integration);
  	ClassDB::bind_method(D_METHOD("body_is_omitting_force_integration", "body"), &PhysicsServer2D::body_is_omitting_force_integration);
  
  	ClassDB::bind_method(D_METHOD("body_set_force_integration_callback", "body", "receiver", "method", "userdata"), &PhysicsServer2D::body_set_force_integration_callback, DEFVAL(Variant()));
  
  	ClassDB::bind_method(D_METHOD("body_test_motion", "body", "from", "motion", "infinite_inertia", "margin", "result"), &PhysicsServer2D::_body_test_motion, DEFVAL(0.08), DEFVAL(Variant()));
  
  	ClassDB::bind_method(D_METHOD("body_get_direct_state", "body"), &PhysicsServer2D::body_get_direct_state);
  
  	/* JOINT API */
  
  	ClassDB::bind_method(D_METHOD("joint_set_param", "joint", "param", "value"), &PhysicsServer2D::joint_set_param);
  	ClassDB::bind_method(D_METHOD("joint_get_param", "joint", "param"), &PhysicsServer2D::joint_get_param);
  
  	ClassDB::bind_method(D_METHOD("pin_joint_create", "anchor", "body_a", "body_b"), &PhysicsServer2D::pin_joint_create, DEFVAL(RID()));
  	ClassDB::bind_method(D_METHOD("groove_joint_create", "groove1_a", "groove2_a", "anchor_b", "body_a", "body_b"), &PhysicsServer2D::groove_joint_create, DEFVAL(RID()), DEFVAL(RID()));
  	ClassDB::bind_method(D_METHOD("damped_spring_joint_create", "anchor_a", "anchor_b", "body_a", "body_b"), &PhysicsServer2D::damped_spring_joint_create, DEFVAL(RID()));
  
  	ClassDB::bind_method(D_METHOD("damped_string_joint_set_param", "joint", "param", "value"), &PhysicsServer2D::damped_string_joint_set_param);
  	ClassDB::bind_method(D_METHOD("damped_string_joint_get_param", "joint", "param"), &PhysicsServer2D::damped_string_joint_get_param);
  
  	ClassDB::bind_method(D_METHOD("joint_get_type", "joint"), &PhysicsServer2D::joint_get_type);
  
  	ClassDB::bind_method(D_METHOD("free_rid", "rid"), &PhysicsServer2D::free);
  
  	ClassDB::bind_method(D_METHOD("set_active", "active"), &PhysicsServer2D::set_active);
  
  	ClassDB::bind_method(D_METHOD("get_process_info", "process_info"), &PhysicsServer2D::get_process_info);
  
  	BIND_ENUM_CONSTANT(SPACE_PARAM_CONTACT_RECYCLE_RADIUS);
  	BIND_ENUM_CONSTANT(SPACE_PARAM_CONTACT_MAX_SEPARATION);
  	BIND_ENUM_CONSTANT(SPACE_PARAM_BODY_MAX_ALLOWED_PENETRATION);
  	BIND_ENUM_CONSTANT(SPACE_PARAM_BODY_LINEAR_VELOCITY_SLEEP_THRESHOLD);
  	BIND_ENUM_CONSTANT(SPACE_PARAM_BODY_ANGULAR_VELOCITY_SLEEP_THRESHOLD);
  	BIND_ENUM_CONSTANT(SPACE_PARAM_BODY_TIME_TO_SLEEP);
  	BIND_ENUM_CONSTANT(SPACE_PARAM_CONSTRAINT_DEFAULT_BIAS);
  	BIND_ENUM_CONSTANT(SPACE_PARAM_TEST_MOTION_MIN_CONTACT_DEPTH);
  
  	BIND_ENUM_CONSTANT(SHAPE_LINE);
  	BIND_ENUM_CONSTANT(SHAPE_RAY);
  	BIND_ENUM_CONSTANT(SHAPE_SEGMENT);
  	BIND_ENUM_CONSTANT(SHAPE_CIRCLE);
  	BIND_ENUM_CONSTANT(SHAPE_RECTANGLE);
  	BIND_ENUM_CONSTANT(SHAPE_CAPSULE);
  	BIND_ENUM_CONSTANT(SHAPE_CONVEX_POLYGON);
  	BIND_ENUM_CONSTANT(SHAPE_CONCAVE_POLYGON);
  	BIND_ENUM_CONSTANT(SHAPE_CUSTOM);
  
  	BIND_ENUM_CONSTANT(AREA_PARAM_GRAVITY);
  	BIND_ENUM_CONSTANT(AREA_PARAM_GRAVITY_VECTOR);
  	BIND_ENUM_CONSTANT(AREA_PARAM_GRAVITY_IS_POINT);
  	BIND_ENUM_CONSTANT(AREA_PARAM_GRAVITY_DISTANCE_SCALE);
  	BIND_ENUM_CONSTANT(AREA_PARAM_GRAVITY_POINT_ATTENUATION);
  	BIND_ENUM_CONSTANT(AREA_PARAM_LINEAR_DAMP);
  	BIND_ENUM_CONSTANT(AREA_PARAM_ANGULAR_DAMP);
  	BIND_ENUM_CONSTANT(AREA_PARAM_PRIORITY);
  
  	BIND_ENUM_CONSTANT(AREA_SPACE_OVERRIDE_DISABLED);
  	BIND_ENUM_CONSTANT(AREA_SPACE_OVERRIDE_COMBINE);
  	BIND_ENUM_CONSTANT(AREA_SPACE_OVERRIDE_COMBINE_REPLACE);
  	BIND_ENUM_CONSTANT(AREA_SPACE_OVERRIDE_REPLACE);
  	BIND_ENUM_CONSTANT(AREA_SPACE_OVERRIDE_REPLACE_COMBINE);
  
  	BIND_ENUM_CONSTANT(BODY_MODE_STATIC);
  	BIND_ENUM_CONSTANT(BODY_MODE_KINEMATIC);
  	BIND_ENUM_CONSTANT(BODY_MODE_RIGID);
  	BIND_ENUM_CONSTANT(BODY_MODE_CHARACTER);
  
  	BIND_ENUM_CONSTANT(BODY_PARAM_BOUNCE);
  	BIND_ENUM_CONSTANT(BODY_PARAM_FRICTION);
  	BIND_ENUM_CONSTANT(BODY_PARAM_MASS);
  	BIND_ENUM_CONSTANT(BODY_PARAM_INERTIA);
  	BIND_ENUM_CONSTANT(BODY_PARAM_GRAVITY_SCALE);
  	BIND_ENUM_CONSTANT(BODY_PARAM_LINEAR_DAMP);
  	BIND_ENUM_CONSTANT(BODY_PARAM_ANGULAR_DAMP);
  	BIND_ENUM_CONSTANT(BODY_PARAM_MAX);
  
  	BIND_ENUM_CONSTANT(BODY_STATE_TRANSFORM);
  	BIND_ENUM_CONSTANT(BODY_STATE_LINEAR_VELOCITY);
  	BIND_ENUM_CONSTANT(BODY_STATE_ANGULAR_VELOCITY);
  	BIND_ENUM_CONSTANT(BODY_STATE_SLEEPING);
  	BIND_ENUM_CONSTANT(BODY_STATE_CAN_SLEEP);
  
  	BIND_ENUM_CONSTANT(JOINT_PIN);
  	BIND_ENUM_CONSTANT(JOINT_GROOVE);
  	BIND_ENUM_CONSTANT(JOINT_DAMPED_SPRING);
  
  	BIND_ENUM_CONSTANT(JOINT_PARAM_BIAS);
  	BIND_ENUM_CONSTANT(JOINT_PARAM_MAX_BIAS);
  	BIND_ENUM_CONSTANT(JOINT_PARAM_MAX_FORCE);
  
  	BIND_ENUM_CONSTANT(DAMPED_STRING_REST_LENGTH);
  	BIND_ENUM_CONSTANT(DAMPED_STRING_STIFFNESS);
  	BIND_ENUM_CONSTANT(DAMPED_STRING_DAMPING);
  
  	BIND_ENUM_CONSTANT(CCD_MODE_DISABLED);
  	BIND_ENUM_CONSTANT(CCD_MODE_CAST_RAY);
  	BIND_ENUM_CONSTANT(CCD_MODE_CAST_SHAPE);
  
  	BIND_ENUM_CONSTANT(AREA_BODY_ADDED);
  	BIND_ENUM_CONSTANT(AREA_BODY_REMOVED);
  
  	BIND_ENUM_CONSTANT(INFO_ACTIVE_OBJECTS);
  	BIND_ENUM_CONSTANT(INFO_COLLISION_PAIRS);
  	BIND_ENUM_CONSTANT(INFO_ISLAND_COUNT);
  }
  
  PhysicsServer2D::PhysicsServer2D() {
  
  	singleton = this;
  }
  
  PhysicsServer2D::~PhysicsServer2D() {
  
  	singleton = NULL;
  }
  
  Vector<PhysicsServer2DManager::ClassInfo> PhysicsServer2DManager::physics_2d_servers;
  int PhysicsServer2DManager::default_server_id = -1;
  int PhysicsServer2DManager::default_server_priority = -1;
  const String PhysicsServer2DManager::setting_property_name("physics/2d/physics_engine");
  
  void PhysicsServer2DManager::on_servers_changed() {
  
  	String physics_servers("DEFAULT");
  	for (int i = get_servers_count() - 1; 0 <= i; --i) {
  		physics_servers += "," + get_server_name(i);
  	}
  	ProjectSettings::get_singleton()->set_custom_property_info(setting_property_name, PropertyInfo(Variant::STRING, setting_property_name, PROPERTY_HINT_ENUM, physics_servers));
  }
  
  void PhysicsServer2DManager::register_server(const String &p_name, CreatePhysicsServer2DCallback p_creat_callback) {
  
  	ERR_FAIL_COND(!p_creat_callback);
  	ERR_FAIL_COND(find_server_id(p_name) != -1);
  	physics_2d_servers.push_back(ClassInfo(p_name, p_creat_callback));
  	on_servers_changed();
  }
  
  void PhysicsServer2DManager::set_default_server(const String &p_name, int p_priority) {
  
  	const int id = find_server_id(p_name);
  	ERR_FAIL_COND(id == -1); // Not found
  	if (default_server_priority < p_priority) {
  		default_server_id = id;
  		default_server_priority = p_priority;
  	}
  }
  
  int PhysicsServer2DManager::find_server_id(const String &p_name) {
  
  	for (int i = physics_2d_servers.size() - 1; 0 <= i; --i) {
  		if (p_name == physics_2d_servers[i].name) {
  			return i;
  		}
  	}
  	return -1;
  }
  
  int PhysicsServer2DManager::get_servers_count() {
  	return physics_2d_servers.size();
  }
  
  String PhysicsServer2DManager::get_server_name(int p_id) {
  	ERR_FAIL_INDEX_V(p_id, get_servers_count(), "");
  	return physics_2d_servers[p_id].name;
  }
  
  PhysicsServer2D *PhysicsServer2DManager::new_default_server() {
  	ERR_FAIL_COND_V(default_server_id == -1, NULL);
  	return physics_2d_servers[default_server_id].create_callback();
  }
  
  PhysicsServer2D *PhysicsServer2DManager::new_server(const String &p_name) {
  	int id = find_server_id(p_name);
  	if (id == -1) {
  		return NULL;
  	} else {
  		return physics_2d_servers[id].create_callback();
  	}
  }
  