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spring.hxx

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00001 //  $Id: spring.hxx,v 1.5 2003/01/02 20:49:23 grumbel Exp $
00002 // 
00003 //  Construo - A wire-frame construction game
00004 //  Copyright (C) 2002 Ingo Ruhnke <grumbel@gmx.de>
00005 //
00006 //  This program is free software; you can redistribute it and/or
00007 //  modify it under the terms of the GNU General Public License
00008 //  as published by the Free Software Foundation; either version 2
00009 //  of the License, or (at your option) any later version.
00010 //
00011 //  This program is distributed in the hope that it will be useful,
00012 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 //  GNU General Public License for more details.
00015 // 
00016 //  You should have received a copy of the GNU General Public License
00017 //  along with this program; if not, write to the Free Software
00018 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00019 
00020 #ifndef HEADER_CONSTRUO_SPRING_HXX
00021 #define HEADER_CONSTRUO_SPRING_HXX
00022 
00023 #include <iostream>
00024 #include <assert.h>
00025 #include "particle.hxx"
00026 #include "world.hxx"
00027 #include "lisp_reader.hxx"
00028 
00029 class World;
00030 
00031 class Spring
00032 {
00033 public:
00034   std::pair<Particle*, Particle*> particles;
00035   
00036   float length;
00037   bool destroyed;
00038 
00039   float stiffness;
00040   float damping;
00041   float max_stretch;
00042 
00043   Spring (Particle* f, Particle* s, float l);
00044   Spring (Particle* f, Particle* s);
00045 
00046   Spring (World* world, lisp_object_t* cursor);
00047 
00048   ~Spring ();
00049 
00050   void update (float delta);
00051   void draw (ZoomGraphicContext* gc);
00052   void draw_highlight (ZoomGraphicContext* gc);
00053 
00055   void recalc_length ();
00056 
00057   lisp_object_t* serialize();
00058 };
00059 
00060 #endif
00061 
00062 /* EOF */

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