/*************************************************************************/
/*  constraint_2d_sw.h                                                   */
/*************************************************************************/
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/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
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/*************************************************************************/
#ifndef CONSTRAINT_2D_SW_H
#define CONSTRAINT_2D_SW_H

#include "body_2d_sw.h"

class Constraint2DSW {

	Body2DSW **_body_ptr;
	int _body_count;
	uint64_t island_step;
	Constraint2DSW *island_next;
	Constraint2DSW *island_list_next;

	RID self;

protected:
	Constraint2DSW(Body2DSW **p_body_ptr = NULL, int p_body_count = 0) {
		_body_ptr = p_body_ptr;
		_body_count = p_body_count;
		island_step = 0;
	}

public:
	_FORCE_INLINE_ void set_self(const RID &p_self) { self = p_self; }
	_FORCE_INLINE_ RID get_self() const { return self; }

	_FORCE_INLINE_ uint64_t get_island_step() const { return island_step; }
	_FORCE_INLINE_ void set_island_step(uint64_t p_step) { island_step = p_step; }

	_FORCE_INLINE_ Constraint2DSW *get_island_next() const { return island_next; }
	_FORCE_INLINE_ void set_island_next(Constraint2DSW *p_next) { island_next = p_next; }

	_FORCE_INLINE_ Constraint2DSW *get_island_list_next() const { return island_list_next; }
	_FORCE_INLINE_ void set_island_list_next(Constraint2DSW *p_next) { island_list_next = p_next; }

	_FORCE_INLINE_ Body2DSW **get_body_ptr() const { return _body_ptr; }
	_FORCE_INLINE_ int get_body_count() const { return _body_count; }

	virtual bool setup(float p_step) = 0;
	virtual void solve(float p_step) = 0;

	virtual void shift_shape_indices(const CollisionObject2DSW *p_object, int p_removed_index) {}

	virtual ~Constraint2DSW() {}
};

#endif // CONSTRAINT_2D_SW_H