joint_2d.h

/**************************************************************************/
/*  joint_2d.h                                                            */
/**************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#pragma once

#include "scene/2d/node_2d.h"

class PhysicsBody2D;

class Joint2D : public Node2D {
	GDCLASS(Joint2D, Node2D);

	RID joint;
	RID ba, bb;

	NodePath a;
	NodePath b;
	real_t bias = 0.0;

	bool exclude_from_collision = true;
	bool configured = false;
	String warning;

protected:
	void _disconnect_signals();
	void _body_exit_tree();
	void _update_joint(bool p_only_free = false);

	void _notification(int p_what);
	virtual void _configure_joint(RID p_joint, PhysicsBody2D *body_a, PhysicsBody2D *body_b) = 0;

	static void _bind_methods();

	_FORCE_INLINE_ bool is_configured() const { return configured; }

public:
	virtual PackedStringArray get_configuration_warnings() const override;

	void set_node_a(const NodePath &p_node_a);
	NodePath get_node_a() const;

	void set_node_b(const NodePath &p_node_b);
	NodePath get_node_b() const;

	void set_bias(real_t p_bias);
	real_t get_bias() const;

	void set_exclude_nodes_from_collision(bool p_enable);
	bool get_exclude_nodes_from_collision() const;

	RID get_rid() const { return joint; }
	Joint2D();
	~Joint2D();
};