src/scripting/functions.cpp

   1 //  SuperTux
   2 //  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
   3 //
   4 //  This program is free software: you can redistribute it and/or modify
   5 //  it under the terms of the GNU General Public License as published by
   6 //  the Free Software Foundation, either version 3 of the License, or
   7 //  (at your option) any later version.
   8 //
   9 //  This program is distributed in the hope that it will be useful,
  10 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 //  GNU General Public License for more details.
  13 //
  14 //  You should have received a copy of the GNU General Public License
  15 //  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 #include "scripting/functions.hpp"
  18
  19 #include "audio/sound_manager.hpp"
  20 #include "math/random_generator.hpp"
  21 #include "object/camera.hpp"
  22 #include "object/player.hpp"
  23 #include "physfs/ifile_stream.hpp"
  24 #include "supertux/fadeout.hpp"
  25 #include "supertux/game_session.hpp"
  26 #include "supertux/gameconfig.hpp"
  27 #include "supertux/globals.hpp"
  28 #include "supertux/screen_manager.hpp"
  29 #include "supertux/sector.hpp"
  30 #include "supertux/shrinkfade.hpp"
  31 #include "supertux/textscroller.hpp"
  32 #include "supertux/world.hpp"
  33 #include "util/gettext.hpp"
  34 #include "worldmap/tux.hpp"
  35
  36 #include "scripting/squirrel_util.hpp"
  37 #include "scripting/time_scheduler.hpp"
  38
  39 namespace Scripting {
  40
  41 SQInteger display(HSQUIRRELVM vm)
  42 {
  43   Console::output << squirrel2string(vm, -1) << std::endl;
  44   return 0;
  45 }
  46
  47 void print_stacktrace(HSQUIRRELVM vm)
  48 {
  49   print_squirrel_stack(vm);
  50 }
  51
  52 SQInteger get_current_thread(HSQUIRRELVM vm)
  53 {
  54   sq_pushobject(vm, vm_to_object(vm));
  55   return 1;
  56 }
  57
  58 void wait(HSQUIRRELVM vm, float seconds)
  59 {
  60   TimeScheduler::instance->schedule_thread(vm, game_time + seconds);
  61 }
  62
  63 void wait_for_screenswitch(HSQUIRRELVM vm)
  64 {
  65   g_screen_manager->waiting_threads.add(vm);
  66 }
  67
  68 void exit_screen()
  69 {
  70   g_screen_manager->exit_screen();
  71 }
  72
  73 void fadeout_screen(float seconds)
  74 {
  75   g_screen_manager->set_screen_fade(new FadeOut(seconds));
  76 }
  77
  78 void shrink_screen(float dest_x, float dest_y, float seconds)
  79 {
  80   g_screen_manager->set_screen_fade(new ShrinkFade(Vector(dest_x, dest_y), seconds));
  81 }
  82
  83 void abort_screenfade()
  84 {
  85   g_screen_manager->set_screen_fade(NULL);
  86 }
  87
  88 std::string translate(const std::string& text)
  89 {
  90   return dictionary_manager->get_dictionary().translate(text);
  91 }
  92
  93 void display_text_file(const std::string& filename)
  94 {
  95   g_screen_manager->push_screen(new TextScroller(filename));
  96 }
  97
  98 void load_worldmap(const std::string& filename)
  99 {
 100   using namespace WorldMapNS;
 101
 102   g_screen_manager->push_screen(new WorldMap(filename));
 103 }
 104
 105 void load_level(const std::string& filename)
 106 {
 107   g_screen_manager->push_screen(new GameSession(filename));
 108 }
 109
 110 static SQInteger squirrel_read_char(SQUserPointer file)
 111 {
 112   std::istream* in = reinterpret_cast<std::istream*> (file);
 113   char c = in->get();
 114   if(in->eof())
 115     return 0;
 116
 117   return c;
 118 }
 119
 120 void import(HSQUIRRELVM vm, const std::string& filename)
 121 {
 122   IFileStream in(filename);
 123
 124   if(SQ_FAILED(sq_compile(vm, squirrel_read_char, &in,
 125                           filename.c_str(), SQTrue)))
 126     throw SquirrelError(vm, "Couldn't parse script");
 127
 128   sq_pushroottable(vm);
 129   if(SQ_FAILED(sq_call(vm, 1, SQFalse, SQTrue))) {
 130     sq_pop(vm, 1);
 131     throw SquirrelError(vm, "Couldn't execute script");
 132   }
 133   sq_pop(vm, 1);
 134 }
 135
 136 void debug_collrects(bool enable)
 137 {
 138   Sector::show_collrects = enable;
 139 }
 140
 141 void debug_show_fps(bool enable)
 142 {
 143   g_config->show_fps = enable;
 144 }
 145
 146 void debug_draw_solids_only(bool enable)
 147 {
 148   Sector::draw_solids_only = enable;
 149 }
 150
 151 void debug_worldmap_ghost(bool enable)
 152 {
 153   using namespace WorldMapNS;
 154
 155   if(WorldMap::current() == NULL)
 156     throw std::runtime_error("Can't change ghost mode without active WorldMap");
 157
 158   WorldMap::current()->get_tux()->set_ghost_mode(enable);
 159 }
 160
 161 void save_state()
 162 {
 163   using namespace WorldMapNS;
 164
 165   if(World::current() == NULL || WorldMap::current() == NULL)
 166     throw std::runtime_error("Can't save state without active World");
 167
 168   WorldMap::current()->save_state();
 169   World::current()->save_state();
 170 }
 171
 172 void update_worldmap()
 173 {
 174   using namespace WorldMapNS;
 175
 176   if(WorldMap::current() == NULL)
 177     throw std::runtime_error("Can't update Worldmap: none active");
 178
 179   WorldMap::current()->load_state();
 180 }
 181
 182 // not added to header, function to only be used by others
 183 // in this file
 184 bool validate_sector_player()
 185 {
 186   if (Sector::current() == 0)
 187   {
 188     log_info << "No current sector." << std::endl;
 189     return false;
 190   }
 191
 192   if (Sector::current()->player == 0)
 193   {
 194     log_info << "No player." << std::endl;
 195     return false;
 196   }
 197   return true;
 198 }
 199
 200 void play_music(const std::string& filename)
 201 {
 202   sound_manager->play_music(filename);
 203 }
 204
 205 void play_sound(const std::string& filename)
 206 {
 207   sound_manager->play(filename);
 208 }
 209
 210 void grease()
 211 {
 212   if (!validate_sector_player()) return;
 213   ::Player* tux = Sector::current()->player; // Scripting::Player != ::Player
 214   tux->get_physic().set_velocity_x(tux->get_physic().get_velocity_x()*3);
 215 }
 216
 217 void invincible()
 218 {
 219   if (!validate_sector_player()) return;
 220   ::Player* tux = Sector::current()->player;
 221   tux->invincible_timer.start(10000);
 222 }
 223
 224 void ghost()
 225 {
 226   if (!validate_sector_player()) return;
 227   ::Player* tux = Sector::current()->player;
 228   tux->set_ghost_mode(true);
 229 }
 230
 231 void mortal()
 232 {
 233   if (!validate_sector_player()) return;
 234   ::Player* tux = Sector::current()->player;
 235   tux->invincible_timer.stop();
 236   tux->set_ghost_mode(false);
 237 }
 238
 239 void restart()
 240 {
 241   if (GameSession::current() == 0)
 242   {
 243     log_info << "No game session" << std::endl;
 244     return;
 245   }
 246   GameSession::current()->restart_level();
 247 }
 248
 249 void whereami()
 250 {
 251   if (!validate_sector_player()) return;
 252   ::Player* tux = Sector::current()->player;
 253   log_info << "You are at x " << tux->get_pos().x << ", y " << tux->get_pos().y << std::endl;
 254 }
 255
 256 void gotoend()
 257 {
 258   if (!validate_sector_player()) return;
 259   ::Player* tux = Sector::current()->player;
 260   tux->move(Vector(
 261               (Sector::current()->get_width()) - (SCREEN_WIDTH*2), 0));
 262   Sector::current()->camera->reset(
 263     Vector(tux->get_pos().x, tux->get_pos().y));
 264 }
 265
 266 void camera()
 267 {
 268   if (!validate_sector_player()) return;
 269   log_info << "Camera is at " << Sector::current()->camera->get_translation().x << "," << Sector::current()->camera->get_translation().y << std::endl;
 270 }
 271
 272 void set_gamma(float gamma) {
 273   SDL_SetGamma(gamma, gamma, gamma);
 274 }
 275
 276 void quit()
 277 {
 278   g_screen_manager->quit();
 279 }
 280
 281 int rand()
 282 {
 283   return systemRandom.rand();
 284 }
 285
 286 void set_game_speed(float speed)
 287 {
 288   ::g_game_speed = speed;
 289 }
 290
 291 void record_demo(const std::string& filename)
 292 {
 293   if (GameSession::current() == 0)
 294   {
 295     log_info << "No game session" << std::endl;
 296     return;
 297   }
 298   GameSession::current()->restart_level();
 299   GameSession::current()->record_demo(filename);
 300 }
 301
 302 void play_demo(const std::string& filename)
 303 {
 304   if (GameSession::current() == 0)
 305   {
 306     log_info << "No game session" << std::endl;
 307     return;
 308   }
 309   // Reset random seed
 310   g_config->random_seed = GameSession::current()->get_demo_random_seed(filename);
 311   g_config->random_seed = systemRandom.srand(g_config->random_seed);
 312   GameSession::current()->restart_level();
 313   GameSession::current()->play_demo(filename);
 314 }
 315
 316 }
 317
 318 /* EOF */