joints_2d.h

/*************************************************************************/
/*  joints_2d.h                                                          */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/*************************************************************************/
/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur.                 */
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/* 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    */
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/* the following conditions:                                             */
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/* The above copyright notice and this permission notice shall be        */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
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/*************************************************************************/
#ifndef JOINTS_2D_H
#define JOINTS_2D_H


#include "node_2d.h"

class Joint2D : public Node2D {

    OBJ_TYPE(Joint2D,Node2D);

    RID joint;

    NodePath a;
    NodePath b;
    real_t bias;

    bool exclude_from_collision;


protected:

    void _update_joint();

    void _notification(int p_what);
    virtual RID _configure_joint()=0;

    static void _bind_methods();
public:

    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_joint() const { return joint; }
    Joint2D();

};


class PinJoint2D : public Joint2D {

    OBJ_TYPE(PinJoint2D,Joint2D);

    real_t softness;

protected:

    void _notification(int p_what);
    virtual RID _configure_joint();
    static void _bind_methods();
public:

    void set_softness(real_t p_stiffness);
    real_t get_softness() const;

    PinJoint2D();
};

class GrooveJoint2D : public Joint2D {

    OBJ_TYPE(GrooveJoint2D,Joint2D);

    real_t length;
    real_t initial_offset;

protected:

    void _notification(int p_what);
    virtual RID _configure_joint();
    static void _bind_methods();
public:

    void set_length(real_t p_length);
    real_t get_length() const;

    void set_initial_offset(real_t p_initial_offset);
    real_t get_initial_offset() const;

    GrooveJoint2D();
};

class DampedSpringJoint2D : public Joint2D {

    OBJ_TYPE(DampedSpringJoint2D,Joint2D);

    real_t stiffness;
    real_t damping;
    real_t rest_length;
    real_t length;

protected:

    void _notification(int p_what);
    virtual RID _configure_joint();
    static void _bind_methods();
public:

    void set_length(real_t p_length);
    real_t get_length() const;

    void set_rest_length(real_t p_rest_length);
    real_t get_rest_length() const;

    void set_damping(real_t p_damping);
    real_t get_damping() const;

    void set_stiffness(real_t p_stiffness);
    real_t get_stiffness() const;

    DampedSpringJoint2D();
};


#endif // JOINTS_2D_H