src/video-driver.cpp

   1 /* guile-irrlicht --- GNU Guile bindings for Irrlicht Engine
   2
   3    Copyright (C) 2020 Javier Sancho <jsf@jsancho.org>
   4
   5    This file is part of guile-irrlicht.
   6
   7    guile-irrlicht is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU Lesser General Public License as
   9    published by the Free Software Foundation; either version 3 of the
  10    License, or (at your option) any later version.
  11
  12    guile-irrlicht is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with guile-irrlicht. If not, see
  19    <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include <irrlicht/irrlicht.h>
  23 #include <libguile.h>
  24
  25 #include "color.h"
  26 #include "device.h"
  27 #include "gui-environment.h"
  28 #include "material.h"
  29 #include "matrix4.h"
  30 #include "rect.h"
  31 #include "scene-manager.h"
  32 #include "texture.h"
  33 #include "video-driver.h"
  34 #include "wrapped.h"
  35
  36 extern "C" {
  37
  38   void
  39   init_video_driver (void)
  40   {
  41     init_video_driver_type ();
  42     scm_c_define_gsubr ("begin-scene", 1, 0, 1, (scm_t_subr)irr_video_beginScene);
  43     scm_c_define_gsubr ("end-scene", 1, 0, 0, (scm_t_subr)irr_video_endScene);
  44     scm_c_define_gsubr ("get-fps", 1, 0, 0, (scm_t_subr)irr_video_getFPS);
  45     scm_c_define_gsubr ("get-texture", 2, 0, 0, (scm_t_subr)irr_video_getTexture);
  46     scm_c_define_gsubr ("get-video-driver", 1, 0, 0, (scm_t_subr)irr_getVideoDriver);
  47     scm_c_define_gsubr ("set-transform!", 3, 0, 0, (scm_t_subr)irr_video_setTransform);
  48     scm_c_export ("begin-scene", "end-scene", "get-fps", "get-texture",
  49                   "get-video-driver", "set-transform!", NULL);
  50   }
  51
  52   DEFINE_WRAPPED_TYPE (irr::video::IVideoDriver*, "video-driver",
  53                        init_video_driver_type, video_driver_p,
  54                        wrap_video_driver, unwrap_video_driver);
  55
  56   SCM
  57   irr_video_beginScene (SCM wrapped_video_driver,
  58                         SCM rest)
  59   {
  60     SCM back_buffer = scm_from_bool(1);
  61     SCM z_buffer = scm_from_bool(1);
  62     SCM color = scm_list_4 (scm_from_uint32 (255),
  63                             scm_from_uint32 (0),
  64                             scm_from_uint32 (0),
  65                             scm_from_uint32 (0));
  66     SCM video_data = scm_from_bool(0);
  67     SCM source_rect = scm_from_bool(0);
  68
  69     scm_c_bind_keyword_arguments ("begin-scene", rest, (scm_t_keyword_arguments_flags)0,
  70                                   scm_from_utf8_keyword ("back-buffer"), &back_buffer,
  71                                   scm_from_utf8_keyword ("z-buffer"), &z_buffer,
  72                                   scm_from_utf8_keyword ("color"), &color,
  73                                   scm_from_utf8_keyword ("video-data"), &video_data,
  74                                   scm_from_utf8_keyword ("source-rect"), &source_rect,
  75                                   SCM_UNDEFINED);
  76
  77     irr::video::IVideoDriver* driver = unwrap_video_driver (wrapped_video_driver);
  78     irr::core::rect<irr::s32>* sourceRectAddress = 0;
  79     if (!scm_is_false (source_rect))
  80       {
  81         irr::core::rect<irr::s32> sourceRect = scm_to_rect_s32 (source_rect);
  82         sourceRectAddress = &sourceRect;
  83       }
  84     return scm_from_bool (driver->beginScene (scm_to_bool (back_buffer),
  85                                               scm_to_bool (z_buffer),
  86                                               scm_to_color (color),
  87                                               irr::video::SExposedVideoData (),
  88                                               sourceRectAddress));
  89   }
  90
  91   SCM
  92   irr_video_endScene (SCM wrapped_video_driver)
  93   {
  94     irr::video::IVideoDriver* driver = unwrap_video_driver (wrapped_video_driver);
  95     return scm_from_bool (driver->endScene ());
  96   }
  97
  98   SCM
  99   irr_video_getFPS (SCM wrapped_video_driver)
 100   {
 101     irr::video::IVideoDriver* driver = unwrap_video_driver (wrapped_video_driver);
 102     return scm_from_int32 (driver->getFPS ());
 103   }
 104
 105   SCM
 106   irr_video_getTexture (SCM wrapped_video_driver,
 107                         SCM filename)
 108   {
 109     irr::video::IVideoDriver* driver = unwrap_video_driver (wrapped_video_driver);
 110     irr::video::ITexture* texture = driver->getTexture (scm_to_utf8_stringn (filename, NULL));
 111     return wrap_texture (texture);
 112   }
 113
 114   SCM
 115   irr_video_setMaterial (SCM wrapped_video_driver,
 116                          SCM material)
 117   {
 118     irr::video::IVideoDriver* driver = unwrap_video_driver (wrapped_video_driver);
 119     driver->setMaterial (*(unwrap_material (material)));
 120     return SCM_UNSPECIFIED;
 121   }
 122
 123   SCM
 124   irr_video_setTransform (SCM wrapped_video_driver,
 125                           SCM state,
 126                           SCM mat)
 127   {
 128     irr::video::IVideoDriver* driver = unwrap_video_driver (wrapped_video_driver);
 129     driver->setTransform (scm_to_transformation_state (state),
 130                           scm_to_matrix4 (mat));
 131     return SCM_UNSPECIFIED;
 132   }
 133
 134   SCM
 135   irr_getVideoDriver (SCM wrapped_obj)
 136   {
 137     irr::video::IVideoDriver* driver;
 138     if (device_p (wrapped_obj))
 139       {
 140         driver = unwrap_device (wrapped_obj)->getVideoDriver ();
 141       }
 142     else
 143       {
 144         scm_error (scm_arg_type_key, NULL, "Cannot get video driver from object: ~S",
 145                    scm_list_1 (wrapped_obj), scm_list_1 (wrapped_obj));
 146       }
 147     return wrap_video_driver (driver);
 148   }
 149
 150   irr::video::E_TRANSFORMATION_STATE
 151   scm_to_transformation_state (SCM transformation_state)
 152   {
 153     char* state = scm_to_utf8_stringn (scm_symbol_to_string (transformation_state), NULL);
 154     if (!strcmp (state, "view"))
 155       {
 156         return irr::video::ETS_VIEW;
 157       }
 158     else if (!strcmp (state, "world"))
 159       {
 160         return irr::video::ETS_WORLD;
 161       }
 162     else if (!strcmp (state, "projection"))
 163       {
 164         return irr::video::ETS_PROJECTION;
 165       }
 166     else if (!strcmp (state, "texture0"))
 167       {
 168         return irr::video::ETS_TEXTURE_0;
 169       }
 170     else if (!strcmp (state, "texture1"))
 171       {
 172         return irr::video::ETS_TEXTURE_1;
 173       }
 174     else if (!strcmp (state, "texture2"))
 175       {
 176         return irr::video::ETS_TEXTURE_2;
 177       }
 178     else if (!strcmp (state, "texture3"))
 179       {
 180         return irr::video::ETS_TEXTURE_3;
 181       }
 182     else
 183       {
 184         scm_error (scm_arg_type_key, NULL, "Wrong transformation state: ~S",
 185                    scm_list_1 (transformation_state), scm_list_1 (transformation_state));
 186       }
 187   }
 188
 189 }