/*************************************************************************/
/*  physics_2d_server.cpp                                                */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* 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:                                             */
/*                                                                       */
/* 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_2d_server.h"
#include "print_string.h"
Physics2DServer * Physics2DServer::singleton=NULL;


void Physics2DDirectBodyState::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* Physics2DDirectBodyState::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;
}

Physics2DServer * Physics2DServer::get_singleton() {

	return singleton;
}

void Physics2DDirectBodyState::_bind_methods() {

	ClassDB::bind_method(D_METHOD("get_total_gravity"),&Physics2DDirectBodyState::get_total_gravity);
	ClassDB::bind_method(D_METHOD("get_total_linear_damp"),&Physics2DDirectBodyState::get_total_linear_damp);
	ClassDB::bind_method(D_METHOD("get_total_angular_damp"),&Physics2DDirectBodyState::get_total_angular_damp);

	ClassDB::bind_method(D_METHOD("get_inverse_mass"),&Physics2DDirectBodyState::get_inverse_mass);
	ClassDB::bind_method(D_METHOD("get_inverse_inertia"),&Physics2DDirectBodyState::get_inverse_inertia);

	ClassDB::bind_method(D_METHOD("set_linear_velocity","velocity"),&Physics2DDirectBodyState::set_linear_velocity);
	ClassDB::bind_method(D_METHOD("get_linear_velocity"),&Physics2DDirectBodyState::get_linear_velocity);

	ClassDB::bind_method(D_METHOD("set_angular_velocity","velocity"),&Physics2DDirectBodyState::set_angular_velocity);
	ClassDB::bind_method(D_METHOD("get_angular_velocity"),&Physics2DDirectBodyState::get_angular_velocity);

	ClassDB::bind_method(D_METHOD("set_transform","transform"),&Physics2DDirectBodyState::set_transform);
	ClassDB::bind_method(D_METHOD("get_transform"),&Physics2DDirectBodyState::get_transform);

	ClassDB::bind_method(D_METHOD("set_sleep_state","enabled"),&Physics2DDirectBodyState::set_sleep_state);
	ClassDB::bind_method(D_METHOD("is_sleeping"),&Physics2DDirectBodyState::is_sleeping);

	ClassDB::bind_method(D_METHOD("get_contact_count"),&Physics2DDirectBodyState::get_contact_count);

	ClassDB::bind_method(D_METHOD("get_contact_local_pos","contact_idx"),&Physics2DDirectBodyState::get_contact_local_pos);
	ClassDB::bind_method(D_METHOD("get_contact_local_normal","contact_idx"),&Physics2DDirectBodyState::get_contact_local_normal);
	ClassDB::bind_method(D_METHOD("get_contact_local_shape","contact_idx"),&Physics2DDirectBodyState::get_contact_local_shape);
	ClassDB::bind_method(D_METHOD("get_contact_collider","contact_idx"),&Physics2DDirectBodyState::get_contact_collider);
	ClassDB::bind_method(D_METHOD("get_contact_collider_pos","contact_idx"),&Physics2DDirectBodyState::get_contact_collider_pos);
	ClassDB::bind_method(D_METHOD("get_contact_collider_id","contact_idx"),&Physics2DDirectBodyState::get_contact_collider_id);
	ClassDB::bind_method(D_METHOD("get_contact_collider_object","contact_idx"),&Physics2DDirectBodyState::get_contact_collider_object);
	ClassDB::bind_method(D_METHOD("get_contact_collider_shape","contact_idx"),&Physics2DDirectBodyState::get_contact_collider_shape);
	ClassDB::bind_method(D_METHOD("get_contact_collider_shape_metadata:Variant","contact_idx"),&Physics2DDirectBodyState::get_contact_collider_shape_metadata);
	ClassDB::bind_method(D_METHOD("get_contact_collider_velocity_at_pos","contact_idx"),&Physics2DDirectBodyState::get_contact_collider_velocity_at_pos);
	ClassDB::bind_method(D_METHOD("get_step"),&Physics2DDirectBodyState::get_step);
	ClassDB::bind_method(D_METHOD("integrate_forces"),&Physics2DDirectBodyState::integrate_forces);
	ClassDB::bind_method(D_METHOD("get_space_state:Physics2DDirectSpaceState"),&Physics2DDirectBodyState::get_space_state);

}

Physics2DDirectBodyState::Physics2DDirectBodyState() {}

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



void Physics2DShapeQueryParameters::set_shape(const RES &p_shape) {

	ERR_FAIL_COND(p_shape.is_null());
	shape=p_shape->get_rid();
}

void Physics2DShapeQueryParameters::set_shape_rid(const RID& p_shape) {

	shape=p_shape;
}

RID Physics2DShapeQueryParameters::get_shape_rid() const {

	return shape;
}

void Physics2DShapeQueryParameters::set_transform(const Transform2D& p_transform){

	transform=p_transform;
}
Transform2D Physics2DShapeQueryParameters::get_transform() const{

	return transform;
}

void Physics2DShapeQueryParameters::set_motion(const Vector2& p_motion){

	motion=p_motion;
}
Vector2 Physics2DShapeQueryParameters::get_motion() const{

	return motion;
}

void Physics2DShapeQueryParameters::set_margin(float p_margin){

	margin=p_margin;
}
float Physics2DShapeQueryParameters::get_margin() const{

	return margin;
}

void Physics2DShapeQueryParameters::set_layer_mask(int p_layer_mask){

	layer_mask=p_layer_mask;
}
int Physics2DShapeQueryParameters::get_layer_mask() const{

	return layer_mask;
}


void Physics2DShapeQueryParameters::set_object_type_mask(int p_object_type_mask){

	object_type_mask=p_object_type_mask;
}
int Physics2DShapeQueryParameters::get_object_type_mask() const{

	return object_type_mask;
}
void Physics2DShapeQueryParameters::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> Physics2DShapeQueryParameters::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[idx]=E->get();
	}
	return ret;
}

void Physics2DShapeQueryParameters::_bind_methods() {

	ClassDB::bind_method(D_METHOD("set_shape","shape:Shape2D"),&Physics2DShapeQueryParameters::set_shape);
	ClassDB::bind_method(D_METHOD("set_shape_rid","shape"),&Physics2DShapeQueryParameters::set_shape_rid);
	ClassDB::bind_method(D_METHOD("get_shape_rid"),&Physics2DShapeQueryParameters::get_shape_rid);

	ClassDB::bind_method(D_METHOD("set_transform","transform"),&Physics2DShapeQueryParameters::set_transform);
	ClassDB::bind_method(D_METHOD("get_transform"),&Physics2DShapeQueryParameters::get_transform);

	ClassDB::bind_method(D_METHOD("set_motion","motion"),&Physics2DShapeQueryParameters::set_motion);
	ClassDB::bind_method(D_METHOD("get_motion"),&Physics2DShapeQueryParameters::get_motion);

	ClassDB::bind_method(D_METHOD("set_margin","margin"),&Physics2DShapeQueryParameters::set_margin);
	ClassDB::bind_method(D_METHOD("get_margin"),&Physics2DShapeQueryParameters::get_margin);

	ClassDB::bind_method(D_METHOD("set_layer_mask","layer_mask"),&Physics2DShapeQueryParameters::set_layer_mask);
	ClassDB::bind_method(D_METHOD("get_layer_mask"),&Physics2DShapeQueryParameters::get_layer_mask);

	ClassDB::bind_method(D_METHOD("set_object_type_mask","object_type_mask"),&Physics2DShapeQueryParameters::set_object_type_mask);
	ClassDB::bind_method(D_METHOD("get_object_type_mask"),&Physics2DShapeQueryParameters::get_object_type_mask);

	ClassDB::bind_method(D_METHOD("set_exclude","exclude"),&Physics2DShapeQueryParameters::set_exclude);
	ClassDB::bind_method(D_METHOD("get_exclude"),&Physics2DShapeQueryParameters::get_exclude);


}

Physics2DShapeQueryParameters::Physics2DShapeQueryParameters() {

	margin=0;
	layer_mask=0x7FFFFFFF;
	object_type_mask=Physics2DDirectSpaceState::TYPE_MASK_COLLISION;
}


Dictionary Physics2DDirectSpaceState::_intersect_ray(const Vector2& p_from, const Vector2& p_to,const Vector<RID>& p_exclude,uint32_t p_layers,uint32_t p_object_type_mask) {

	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_object_type_mask);

	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 Physics2DDirectSpaceState::_intersect_shape(const Ref<Physics2DShapeQueryParameters> &psq, int p_max_results) {

	Vector<ShapeResult> sr;
	sr.resize(p_max_results);
	int rc = intersect_shape(psq->shape,psq->transform,psq->motion,psq->margin,sr.ptr(),sr.size(),psq->exclude,psq->layer_mask,psq->object_type_mask);
	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 Physics2DDirectSpaceState::_cast_motion(const Ref<Physics2DShapeQueryParameters> &psq){

	float closest_safe,closest_unsafe;
	bool res = cast_motion(psq->shape,psq->transform,psq->motion,psq->margin,closest_safe,closest_unsafe,psq->exclude,psq->layer_mask,psq->object_type_mask);
	if (!res)
		return Array();
	Array ret;
	ret.resize(2);
	ret[0]=closest_safe;
	ret[1]=closest_unsafe;
	return ret;

}

Array Physics2DDirectSpaceState::_intersect_point(const Vector2& p_point,int p_max_results,const Vector<RID>& p_exclude,uint32_t p_layers,uint32_t p_object_type_mask) {

	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 = intersect_point(p_point,ret.ptr(),ret.size(),exclude,p_layers,p_object_type_mask);
	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 Physics2DDirectSpaceState::_collide_shape(const Ref<Physics2DShapeQueryParameters> &psq, int p_max_results){

	Vector<Vector2> ret;
	ret.resize(p_max_results*2);
	int rc=0;
	bool res = collide_shape(psq->shape,psq->transform,psq->motion,psq->margin,ret.ptr(),p_max_results,rc,psq->exclude,psq->layer_mask,psq->object_type_mask);
	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 Physics2DDirectSpaceState::_get_rest_info(const Ref<Physics2DShapeQueryParameters> &psq){

	ShapeRestInfo sri;

	bool res = rest_info(psq->shape,psq->transform,psq->motion,psq->margin,&sri,psq->exclude,psq->layer_mask,psq->object_type_mask);
	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;
}



Physics2DDirectSpaceState::Physics2DDirectSpaceState() {



}


void Physics2DDirectSpaceState::_bind_methods() {


	ClassDB::bind_method(D_METHOD("intersect_point","point","max_results","exclude","layer_mask","type_mask"),&Physics2DDirectSpaceState::_intersect_point,DEFVAL(32),DEFVAL(Array()),DEFVAL(0x7FFFFFFF),DEFVAL(TYPE_MASK_COLLISION));
	ClassDB::bind_method(D_METHOD("intersect_ray:Dictionary","from","to","exclude","layer_mask","type_mask"),&Physics2DDirectSpaceState::_intersect_ray,DEFVAL(Array()),DEFVAL(0x7FFFFFFF),DEFVAL(TYPE_MASK_COLLISION));
	ClassDB::bind_method(D_METHOD("intersect_shape","shape:Physics2DShapeQueryParameters","max_results"),&Physics2DDirectSpaceState::_intersect_shape,DEFVAL(32));
	ClassDB::bind_method(D_METHOD("cast_motion","shape:Physics2DShapeQueryParameters"),&Physics2DDirectSpaceState::_cast_motion);
	ClassDB::bind_method(D_METHOD("collide_shape","shape:Physics2DShapeQueryParameters","max_results"),&Physics2DDirectSpaceState::_collide_shape,DEFVAL(32));
	ClassDB::bind_method(D_METHOD("get_rest_info","shape:Physics2DShapeQueryParameters"),&Physics2DDirectSpaceState::_get_rest_info);
	//ClassDB::bind_method(D_METHOD("cast_motion","shape","xform","motion","exclude","umask"),&Physics2DDirectSpaceState::_intersect_shape,DEFVAL(Array()),DEFVAL(0));

	BIND_CONSTANT( TYPE_MASK_STATIC_BODY );
	BIND_CONSTANT( TYPE_MASK_KINEMATIC_BODY );
	BIND_CONSTANT( TYPE_MASK_RIGID_BODY );
	BIND_CONSTANT( TYPE_MASK_CHARACTER_BODY );
	BIND_CONSTANT( TYPE_MASK_AREA );
	BIND_CONSTANT( TYPE_MASK_COLLISION );

}


int Physics2DShapeQueryResult::get_result_count() const {

	return result.size();
}
RID Physics2DShapeQueryResult::get_result_rid(int p_idx) const {

	return result[p_idx].rid;
}
ObjectID Physics2DShapeQueryResult::get_result_object_id(int p_idx) const {

	return result[p_idx].collider_id;
}
Object* Physics2DShapeQueryResult::get_result_object(int p_idx) const {

	return result[p_idx].collider;
}
int Physics2DShapeQueryResult::get_result_object_shape(int p_idx) const {

	return result[p_idx].shape;
}

Physics2DShapeQueryResult::Physics2DShapeQueryResult() {


}

void Physics2DShapeQueryResult::_bind_methods() {

	ClassDB::bind_method(D_METHOD("get_result_count"),&Physics2DShapeQueryResult::get_result_count);
	ClassDB::bind_method(D_METHOD("get_result_rid","idx"),&Physics2DShapeQueryResult::get_result_rid);
	ClassDB::bind_method(D_METHOD("get_result_object_id","idx"),&Physics2DShapeQueryResult::get_result_object_id);
	ClassDB::bind_method(D_METHOD("get_result_object","idx"),&Physics2DShapeQueryResult::get_result_object);
	ClassDB::bind_method(D_METHOD("get_result_object_shape","idx"),&Physics2DShapeQueryResult::get_result_object_shape);


}

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

/*bool Physics2DTestMotionResult::is_colliding() const {

	return colliding;
}*/
Vector2 Physics2DTestMotionResult::get_motion() const{

	return result.motion;
}
Vector2 Physics2DTestMotionResult::get_motion_remainder() const{

	return result.remainder;
}

Vector2 Physics2DTestMotionResult::get_collision_point() const{

	return result.collision_point;
}
Vector2 Physics2DTestMotionResult::get_collision_normal() const{

	return result.collision_normal;
}
Vector2 Physics2DTestMotionResult::get_collider_velocity() const{

	return result.collider_velocity;
}
ObjectID Physics2DTestMotionResult::get_collider_id() const{

	return result.collider_id;
}
RID Physics2DTestMotionResult::get_collider_rid() const{

	return result.collider;
}

Object* Physics2DTestMotionResult::get_collider() const {
	return ObjectDB::get_instance(result.collider_id);
}

int Physics2DTestMotionResult::get_collider_shape() const{

	return result.collider_shape;
}

void Physics2DTestMotionResult::_bind_methods() {

	//ClassDB::bind_method(D_METHOD("is_colliding"),&Physics2DTestMotionResult::is_colliding);
	ClassDB::bind_method(D_METHOD("get_motion"),&Physics2DTestMotionResult::get_motion);
	ClassDB::bind_method(D_METHOD("get_motion_remainder"),&Physics2DTestMotionResult::get_motion_remainder);
	ClassDB::bind_method(D_METHOD("get_collision_point"),&Physics2DTestMotionResult::get_collision_point);
	ClassDB::bind_method(D_METHOD("get_collision_normal"),&Physics2DTestMotionResult::get_collision_normal);
	ClassDB::bind_method(D_METHOD("get_collider_velocity"),&Physics2DTestMotionResult::get_collider_velocity);
	ClassDB::bind_method(D_METHOD("get_collider_id"),&Physics2DTestMotionResult::get_collider_id);
	ClassDB::bind_method(D_METHOD("get_collider_rid"),&Physics2DTestMotionResult::get_collider_rid);
	ClassDB::bind_method(D_METHOD("get_collider"),&Physics2DTestMotionResult::get_collider);
	ClassDB::bind_method(D_METHOD("get_collider_shape"),&Physics2DTestMotionResult::get_collider_shape);

}

Physics2DTestMotionResult::Physics2DTestMotionResult(){

	colliding=false;
	result.collider_id=0;
	result.collider_shape=0;
}


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



bool Physics2DServer::_body_test_motion(RID p_body,const Transform2D& p_from,const Vector2& p_motion,float p_margin,const Ref<Physics2DTestMotionResult>& 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_margin,r);
}

void Physics2DServer::_bind_methods() {


	ClassDB::bind_method(D_METHOD("shape_create","type"),&Physics2DServer::shape_create);
	ClassDB::bind_method(D_METHOD("shape_set_data","shape","data"),&Physics2DServer::shape_set_data);

	ClassDB::bind_method(D_METHOD("shape_get_type","shape"),&Physics2DServer::shape_get_type);
	ClassDB::bind_method(D_METHOD("shape_get_data","shape"),&Physics2DServer::shape_get_data);


	ClassDB::bind_method(D_METHOD("space_create"),&Physics2DServer::space_create);
	ClassDB::bind_method(D_METHOD("space_set_active","space","active"),&Physics2DServer::space_set_active);
	ClassDB::bind_method(D_METHOD("space_is_active","space"),&Physics2DServer::space_is_active);
	ClassDB::bind_method(D_METHOD("space_set_param","space","param","value"),&Physics2DServer::space_set_param);
	ClassDB::bind_method(D_METHOD("space_get_param","space","param"),&Physics2DServer::space_get_param);
	ClassDB::bind_method(D_METHOD("space_get_direct_state:Physics2DDirectSpaceState","space"),&Physics2DServer::space_get_direct_state);

	ClassDB::bind_method(D_METHOD("area_create"),&Physics2DServer::area_create);
	ClassDB::bind_method(D_METHOD("area_set_space","area","space"),&Physics2DServer::area_set_space);
	ClassDB::bind_method(D_METHOD("area_get_space","area"),&Physics2DServer::area_get_space);

	ClassDB::bind_method(D_METHOD("area_set_space_override_mode","area","mode"),&Physics2DServer::area_set_space_override_mode);
	ClassDB::bind_method(D_METHOD("area_get_space_override_mode","area"),&Physics2DServer::area_get_space_override_mode);

	ClassDB::bind_method(D_METHOD("area_add_shape","area","shape","transform"),&Physics2DServer::area_add_shape,DEFVAL(Transform2D()));
	ClassDB::bind_method(D_METHOD("area_set_shape","area","shape_idx","shape"),&Physics2DServer::area_set_shape);
	ClassDB::bind_method(D_METHOD("area_set_shape_transform","area","shape_idx","transform"),&Physics2DServer::area_set_shape_transform);

	ClassDB::bind_method(D_METHOD("area_get_shape_count","area"),&Physics2DServer::area_get_shape_count);
	ClassDB::bind_method(D_METHOD("area_get_shape","area","shape_idx"),&Physics2DServer::area_get_shape);
	ClassDB::bind_method(D_METHOD("area_get_shape_transform","area","shape_idx"),&Physics2DServer::area_get_shape_transform);

	ClassDB::bind_method(D_METHOD("area_remove_shape","area","shape_idx"),&Physics2DServer::area_remove_shape);
	ClassDB::bind_method(D_METHOD("area_clear_shapes","area"),&Physics2DServer::area_clear_shapes);

	ClassDB::bind_method(D_METHOD("area_set_layer_mask","area","mask"),&Physics2DServer::area_set_layer_mask);
	ClassDB::bind_method(D_METHOD("area_set_collision_mask","area","mask"),&Physics2DServer::area_set_collision_mask);

	ClassDB::bind_method(D_METHOD("area_set_param","area","param","value"),&Physics2DServer::area_set_param);
	ClassDB::bind_method(D_METHOD("area_set_transform","area","transform"),&Physics2DServer::area_set_transform);

	ClassDB::bind_method(D_METHOD("area_get_param","area","param"),&Physics2DServer::area_get_param);
	ClassDB::bind_method(D_METHOD("area_get_transform","area"),&Physics2DServer::area_get_transform);

	ClassDB::bind_method(D_METHOD("area_attach_object_instance_ID","area","id"),&Physics2DServer::area_attach_object_instance_ID);
	ClassDB::bind_method(D_METHOD("area_get_object_instance_ID","area"),&Physics2DServer::area_get_object_instance_ID);

	ClassDB::bind_method(D_METHOD("area_set_monitor_callback","area","receiver","method"),&Physics2DServer::area_set_monitor_callback);

	ClassDB::bind_method(D_METHOD("body_create","mode","init_sleeping"),&Physics2DServer::body_create,DEFVAL(BODY_MODE_RIGID),DEFVAL(false));

	ClassDB::bind_method(D_METHOD("body_set_space","body","space"),&Physics2DServer::body_set_space);
	ClassDB::bind_method(D_METHOD("body_get_space","body"),&Physics2DServer::body_get_space);

	ClassDB::bind_method(D_METHOD("body_set_mode","body","mode"),&Physics2DServer::body_set_mode);
	ClassDB::bind_method(D_METHOD("body_get_mode","body"),&Physics2DServer::body_get_mode);

	ClassDB::bind_method(D_METHOD("body_add_shape","body","shape","transform"),&Physics2DServer::body_add_shape,DEFVAL(Transform2D()));
	ClassDB::bind_method(D_METHOD("body_set_shape","body","shape_idx","shape"),&Physics2DServer::body_set_shape);
	ClassDB::bind_method(D_METHOD("body_set_shape_transform","body","shape_idx","transform"),&Physics2DServer::body_set_shape_transform);
	ClassDB::bind_method(D_METHOD("body_set_shape_metadata","body","shape_idx","metadata"),&Physics2DServer::body_set_shape_metadata);

	ClassDB::bind_method(D_METHOD("body_get_shape_count","body"),&Physics2DServer::body_get_shape_count);
	ClassDB::bind_method(D_METHOD("body_get_shape","body","shape_idx"),&Physics2DServer::body_get_shape);
	ClassDB::bind_method(D_METHOD("body_get_shape_transform","body","shape_idx"),&Physics2DServer::body_get_shape_transform);
	ClassDB::bind_method(D_METHOD("body_get_shape_metadata","body","shape_idx"),&Physics2DServer::body_get_shape_metadata);

	ClassDB::bind_method(D_METHOD("body_remove_shape","body","shape_idx"),&Physics2DServer::body_remove_shape);
	ClassDB::bind_method(D_METHOD("body_clear_shapes","body"),&Physics2DServer::body_clear_shapes);


	ClassDB::bind_method(D_METHOD("body_set_shape_as_trigger","body","shape_idx","enable"),&Physics2DServer::body_set_shape_as_trigger);
	ClassDB::bind_method(D_METHOD("body_is_shape_set_as_trigger","body","shape_idx"),&Physics2DServer::body_is_shape_set_as_trigger);

	ClassDB::bind_method(D_METHOD("body_attach_object_instance_ID","body","id"),&Physics2DServer::body_attach_object_instance_ID);
	ClassDB::bind_method(D_METHOD("body_get_object_instance_ID","body"),&Physics2DServer::body_get_object_instance_ID);


	ClassDB::bind_method(D_METHOD("body_set_continuous_collision_detection_mode","body","mode"),&Physics2DServer::body_set_continuous_collision_detection_mode);
	ClassDB::bind_method(D_METHOD("body_get_continuous_collision_detection_mode","body"),&Physics2DServer::body_get_continuous_collision_detection_mode);


	ClassDB::bind_method(D_METHOD("body_set_layer_mask","body","mask"),&Physics2DServer::body_set_layer_mask);
	ClassDB::bind_method(D_METHOD("body_get_layer_mask","body"),&Physics2DServer::body_get_layer_mask);

	ClassDB::bind_method(D_METHOD("body_set_collision_mask","body","mask"),&Physics2DServer::body_set_collision_mask);
	ClassDB::bind_method(D_METHOD("body_get_collision_mask","body"),&Physics2DServer::body_get_collision_mask);


	ClassDB::bind_method(D_METHOD("body_set_param","body","param","value"),&Physics2DServer::body_set_param);
	ClassDB::bind_method(D_METHOD("body_get_param","body","param"),&Physics2DServer::body_get_param);

	ClassDB::bind_method(D_METHOD("body_set_state","body","state","value"),&Physics2DServer::body_set_state);
	ClassDB::bind_method(D_METHOD("body_get_state","body","state"),&Physics2DServer::body_get_state);

	ClassDB::bind_method(D_METHOD("body_apply_impulse","body","pos","impulse"),&Physics2DServer::body_apply_impulse);
	ClassDB::bind_method(D_METHOD("body_add_force","body","offset","force"),&Physics2DServer::body_add_force);
	ClassDB::bind_method(D_METHOD("body_set_axis_velocity","body","axis_velocity"),&Physics2DServer::body_set_axis_velocity);

	ClassDB::bind_method(D_METHOD("body_add_collision_exception","body","excepted_body"),&Physics2DServer::body_add_collision_exception);
	ClassDB::bind_method(D_METHOD("body_remove_collision_exception","body","excepted_body"),&Physics2DServer::body_remove_collision_exception);
	//virtual void body_get_collision_exceptions(RID p_body, List<RID> *p_exceptions)=0;

	ClassDB::bind_method(D_METHOD("body_set_max_contacts_reported","body","amount"),&Physics2DServer::body_set_max_contacts_reported);
	ClassDB::bind_method(D_METHOD("body_get_max_contacts_reported","body"),&Physics2DServer::body_get_max_contacts_reported);

	ClassDB::bind_method(D_METHOD("body_set_one_way_collision_direction","body","normal"),&Physics2DServer::body_set_one_way_collision_direction);
	ClassDB::bind_method(D_METHOD("body_get_one_way_collision_direction","body"),&Physics2DServer::body_get_one_way_collision_direction);

	ClassDB::bind_method(D_METHOD("body_set_one_way_collision_max_depth","body","depth"),&Physics2DServer::body_set_one_way_collision_max_depth);
	ClassDB::bind_method(D_METHOD("body_get_one_way_collision_max_depth","body"),&Physics2DServer::body_get_one_way_collision_max_depth);


	ClassDB::bind_method(D_METHOD("body_set_omit_force_integration","body","enable"),&Physics2DServer::body_set_omit_force_integration);
	ClassDB::bind_method(D_METHOD("body_is_omitting_force_integration","body"),&Physics2DServer::body_is_omitting_force_integration);

	ClassDB::bind_method(D_METHOD("body_set_force_integration_callback","body","receiver","method","userdata"),&Physics2DServer::body_set_force_integration_callback,DEFVAL(Variant()));

	ClassDB::bind_method(D_METHOD("body_test_motion","body","from","motion","margin","result:Physics2DTestMotionResult"),&Physics2DServer::_body_test_motion,DEFVAL(0.08),DEFVAL(Variant()));

	/* JOINT API */

	ClassDB::bind_method(D_METHOD("joint_set_param","joint","param","value"),&Physics2DServer::joint_set_param);
	ClassDB::bind_method(D_METHOD("joint_get_param","joint","param"),&Physics2DServer::joint_get_param);

	ClassDB::bind_method(D_METHOD("pin_joint_create","anchor","body_a","body_b"),&Physics2DServer::pin_joint_create,DEFVAL(RID()));
	ClassDB::bind_method(D_METHOD("groove_joint_create","groove1_a","groove2_a","anchor_b","body_a","body_b"),&Physics2DServer::groove_joint_create,DEFVAL(RID()),DEFVAL(RID()));
	ClassDB::bind_method(D_METHOD("damped_spring_joint_create","anchor_a","anchor_b","body_a","body_b"),&Physics2DServer::damped_spring_joint_create,DEFVAL(RID()));

	ClassDB::bind_method(D_METHOD("damped_string_joint_set_param","joint","param","value"),&Physics2DServer::damped_string_joint_set_param);
	ClassDB::bind_method(D_METHOD("damped_string_joint_get_param","joint","param"),&Physics2DServer::damped_string_joint_get_param);

	ClassDB::bind_method(D_METHOD("joint_get_type","joint"),&Physics2DServer::joint_get_type);

	ClassDB::bind_method(D_METHOD("free_rid","rid"),&Physics2DServer::free);

	ClassDB::bind_method(D_METHOD("set_active","active"),&Physics2DServer::set_active);

	ClassDB::bind_method(D_METHOD("get_process_info","process_info"),&Physics2DServer::get_process_info);

	//ClassDB::bind_method(D_METHOD("init"),&Physics2DServer::init);
	//ClassDB::bind_method(D_METHOD("step"),&Physics2DServer::step);
	//ClassDB::bind_method(D_METHOD("sync"),&Physics2DServer::sync);
	//ClassDB::bind_method(D_METHOD("flush_queries"),&Physics2DServer::flush_queries);

	BIND_CONSTANT( SPACE_PARAM_CONTACT_RECYCLE_RADIUS );
	BIND_CONSTANT( SPACE_PARAM_CONTACT_MAX_SEPARATION );
	BIND_CONSTANT( SPACE_PARAM_BODY_MAX_ALLOWED_PENETRATION );
	BIND_CONSTANT( SPACE_PARAM_BODY_LINEAR_VELOCITY_SLEEP_TRESHOLD );
	BIND_CONSTANT( SPACE_PARAM_BODY_ANGULAR_VELOCITY_SLEEP_TRESHOLD );
	BIND_CONSTANT( SPACE_PARAM_BODY_TIME_TO_SLEEP );
	BIND_CONSTANT( SPACE_PARAM_CONSTRAINT_DEFAULT_BIAS );

	BIND_CONSTANT( SHAPE_LINE );
	BIND_CONSTANT( SHAPE_SEGMENT );
	BIND_CONSTANT( SHAPE_CIRCLE );
	BIND_CONSTANT( SHAPE_RECTANGLE );
	BIND_CONSTANT( SHAPE_CAPSULE );
	BIND_CONSTANT( SHAPE_CONVEX_POLYGON );
	BIND_CONSTANT( SHAPE_CONCAVE_POLYGON );
	BIND_CONSTANT( SHAPE_CUSTOM );

	BIND_CONSTANT( AREA_PARAM_GRAVITY );
	BIND_CONSTANT( AREA_PARAM_GRAVITY_VECTOR );
	BIND_CONSTANT( AREA_PARAM_GRAVITY_IS_POINT );
	BIND_CONSTANT( AREA_PARAM_GRAVITY_DISTANCE_SCALE );
	BIND_CONSTANT( AREA_PARAM_GRAVITY_POINT_ATTENUATION );
	BIND_CONSTANT( AREA_PARAM_LINEAR_DAMP);
	BIND_CONSTANT( AREA_PARAM_ANGULAR_DAMP);
	BIND_CONSTANT( AREA_PARAM_PRIORITY );

	BIND_CONSTANT( AREA_SPACE_OVERRIDE_DISABLED );
	BIND_CONSTANT( AREA_SPACE_OVERRIDE_COMBINE );
	BIND_CONSTANT( AREA_SPACE_OVERRIDE_COMBINE_REPLACE );
	BIND_CONSTANT( AREA_SPACE_OVERRIDE_REPLACE );
	BIND_CONSTANT( AREA_SPACE_OVERRIDE_REPLACE_COMBINE );

	BIND_CONSTANT( BODY_MODE_STATIC );
	BIND_CONSTANT( BODY_MODE_KINEMATIC );
	BIND_CONSTANT( BODY_MODE_RIGID );
	BIND_CONSTANT( BODY_MODE_CHARACTER );

	BIND_CONSTANT( BODY_PARAM_BOUNCE );
	BIND_CONSTANT( BODY_PARAM_FRICTION );
	BIND_CONSTANT( BODY_PARAM_MASS );
	BIND_CONSTANT( BODY_PARAM_INERTIA );
	BIND_CONSTANT( BODY_PARAM_GRAVITY_SCALE );
	BIND_CONSTANT( BODY_PARAM_LINEAR_DAMP);
	BIND_CONSTANT( BODY_PARAM_ANGULAR_DAMP);
	BIND_CONSTANT( BODY_PARAM_MAX );

	BIND_CONSTANT( BODY_STATE_TRANSFORM );
	BIND_CONSTANT( BODY_STATE_LINEAR_VELOCITY );
	BIND_CONSTANT( BODY_STATE_ANGULAR_VELOCITY );
	BIND_CONSTANT( BODY_STATE_SLEEPING );
	BIND_CONSTANT( BODY_STATE_CAN_SLEEP );

	BIND_CONSTANT( JOINT_PIN );
	BIND_CONSTANT( JOINT_GROOVE );
	BIND_CONSTANT( JOINT_DAMPED_SPRING );

	BIND_CONSTANT( DAMPED_STRING_REST_LENGTH );
	BIND_CONSTANT( DAMPED_STRING_STIFFNESS );
	BIND_CONSTANT( DAMPED_STRING_DAMPING );

	BIND_CONSTANT( CCD_MODE_DISABLED );
	BIND_CONSTANT( CCD_MODE_CAST_RAY );
	BIND_CONSTANT( CCD_MODE_CAST_SHAPE );

	//BIND_CONSTANT( TYPE_BODY );
	//BIND_CONSTANT( TYPE_AREA );

	BIND_CONSTANT( AREA_BODY_ADDED );
	BIND_CONSTANT( AREA_BODY_REMOVED );

	BIND_CONSTANT( INFO_ACTIVE_OBJECTS );
	BIND_CONSTANT( INFO_COLLISION_PAIRS );
	BIND_CONSTANT( INFO_ISLAND_COUNT );


}


Physics2DServer::Physics2DServer() {

	//ERR_FAIL_COND( singleton!=NULL );
	singleton=this;
}

Physics2DServer::~Physics2DServer() {

	singleton=NULL;
}

