world.hxx

   1 //  $Id: world.hxx,v 1.23 2003/07/27 18:46:11 grumbel Exp $
   2 //
   3 //  Construo - A wire-frame construction game
   4 //  Copyright (C) 2002 Ingo Ruhnke <grumbel@gmx.de>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #ifndef HEADER_CONSTRUO_WORLD_HXX
  21 #define HEADER_CONSTRUO_WORLD_HXX
  22
  23 #include <vector>
  24 #include "spring.hxx"
  25 #include "particle.hxx"
  26 #include "collider.hxx"
  27 #include "bounding_box.hxx"
  28
  29 class Particle;
  30 class ParticleFactory;
  31 class Spring;
  32
  33 /** This class holds all particles and springs */
  34 class World
  35 {
  36 public:
  37   typedef std::vector<Collider*> Colliders;
  38   typedef std::vector<Spring*>::iterator SpringIter;
  39   typedef std::vector<Spring*>::const_iterator CSpringIter;
  40 private:
  41   /** Version number of the file, used to ensure backward compability */
  42   unsigned int file_version;
  43
  44   friend class ParticleFactory;
  45   bool has_been_run;
  46   ParticleFactory* particle_mgr;
  47
  48   std::vector<Spring*> springs;
  49
  50   Colliders colliders;
  51
  52   void parse_scene (lisp_object_t* lst);
  53   void parse_springs (lisp_object_t* lst);
  54   void parse_particles (lisp_object_t* lst);
  55   void parse_colliders (lisp_object_t* lst);
  56
  57 public:
  58   /** Create an empty world */
  59   World ();
  60
  61   /** Copy an existing world */
  62   World (const World& w);
  63
  64   /** load a world from file */
  65   World (const std::string& filename);
  66   ~World ();
  67
  68   void draw (ZoomGraphicContext* gc);
  69   void draw_springs (ZoomGraphicContext* gc);
  70   void draw_colliders (ZoomGraphicContext* gc);
  71   void draw_particles (ZoomGraphicContext* gc);
  72
  73   void update (float delta);
  74
  75   World* duplicate () { return new World (*this); }
  76
  77   /** @return the particles closed to the given coordinates */
  78   Particle* get_particle (float x, float y);
  79   /** All particles inside the given rectangle */
  80   std::vector<Particle*> get_particles (float x1, float y1, float x2, float y2);
  81   Spring*   get_spring (float x, float y);
  82
  83   void add_rect_collider(const Vector2d&, const Vector2d&);
  84   void add_spring (Particle*, Particle*);
  85
  86   /** removes the given particle and all objects/springs which
  87       reference to it */
  88   void remove_particle (Particle*);
  89
  90   /** remove the given spring */
  91   void remove_spring (Spring*);
  92
  93   /** Remove the gives collider from the world */
  94   void remove_collider (Collider*);
  95
  96   ParticleFactory* get_particle_mgr() { return particle_mgr; }
  97   std::vector<Spring*>& get_spring_mgr () { return springs; }
  98   Colliders& get_colliders() { return colliders; }
  99
 100   /** removes everything from the world */
 101   void clear ();
 102
 103   bool get_has_been_run () { return has_been_run; }
 104
 105   /** Sets the velocity of all particles to zero, usefull if the
 106       particles are getting out of order (aka. explode). Also usefull
 107       to fix broken model files */
 108   void zero_out_velocity ();
 109
 110   /** Write the current world down to a file */
 111   void write_lisp (const std::string& filename);
 112
 113   /** @return the number of particles in the world */
 114   int get_num_particles();
 115
 116   /** @return the number of springs in the world */
 117   int get_num_springs();
 118
 119   /** Callculate the bounding box of the world from the particle and
 120    *  collider it contains. */
 121   BoundingBox calc_bounding_box();
 122 private:
 123   static World* current_world;
 124 public:
 125   /** @return pointer to the current world */
 126   static World* current() { return current_world; }
 127 private:
 128   World& operator= (const World&);
 129 };
 130
 131 #endif
 132
 133 /* EOF */