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 worldmap;
 101
 102   if(World::current() == NULL)
 103     throw std::runtime_error("Can't start WorldMap without active world.");
 104
 105   g_screen_manager->push_screen(new WorldMap(filename, World::current()->get_player_status()));
 106 }
 107
 108 void load_level(const std::string& filename)
 109 {
 110   if(GameSession::current() == NULL)
 111     throw std::runtime_error("Can't start level without active level.");
 112
 113   g_screen_manager->push_screen(new GameSession(filename, GameSession::current()->get_player_status()));
 114 }
 115
 116 static SQInteger squirrel_read_char(SQUserPointer file)
 117 {
 118   std::istream* in = reinterpret_cast<std::istream*> (file);
 119   char c = in->get();
 120   if(in->eof())
 121     return 0;
 122
 123   return c;
 124 }
 125
 126 void import(HSQUIRRELVM vm, const std::string& filename)
 127 {
 128   IFileStream in(filename);
 129
 130   if(SQ_FAILED(sq_compile(vm, squirrel_read_char, &in,
 131                           filename.c_str(), SQTrue)))
 132     throw SquirrelError(vm, "Couldn't parse script");
 133
 134   sq_pushroottable(vm);
 135   if(SQ_FAILED(sq_call(vm, 1, SQFalse, SQTrue))) {
 136     sq_pop(vm, 1);
 137     throw SquirrelError(vm, "Couldn't execute script");
 138   }
 139   sq_pop(vm, 1);
 140 }
 141
 142 void debug_collrects(bool enable)
 143 {
 144   Sector::show_collrects = enable;
 145 }
 146
 147 void debug_show_fps(bool enable)
 148 {
 149   g_config->show_fps = enable;
 150 }
 151
 152 void debug_draw_solids_only(bool enable)
 153 {
 154   Sector::draw_solids_only = enable;
 155 }
 156
 157 void debug_worldmap_ghost(bool enable)
 158 {
 159   using namespace worldmap;
 160
 161   if(WorldMap::current() == NULL)
 162     throw std::runtime_error("Can't change ghost mode without active WorldMap");
 163
 164   WorldMap::current()->get_tux()->set_ghost_mode(enable);
 165 }
 166
 167 void save_state()
 168 {
 169   using namespace worldmap;
 170
 171   if(World::current() == NULL || WorldMap::current() == NULL)
 172     throw std::runtime_error("Can't save state without active World");
 173
 174   WorldMap::current()->save_state();
 175   World::current()->save_state();
 176 }
 177
 178 void update_worldmap()
 179 {
 180   using namespace worldmap;
 181
 182   if(WorldMap::current() == NULL)
 183     throw std::runtime_error("Can't update Worldmap: none active");
 184
 185   WorldMap::current()->load_state();
 186 }
 187
 188 // not added to header, function to only be used by others
 189 // in this file
 190 bool validate_sector_player()
 191 {
 192   if (Sector::current() == 0)
 193   {
 194     log_info << "No current sector." << std::endl;
 195     return false;
 196   }
 197
 198   if (Sector::current()->player == 0)
 199   {
 200     log_info << "No player." << std::endl;
 201     return false;
 202   }
 203   return true;
 204 }
 205
 206 void play_music(const std::string& filename)
 207 {
 208   sound_manager->play_music(filename);
 209 }
 210
 211 void play_sound(const std::string& filename)
 212 {
 213   sound_manager->play(filename);
 214 }
 215
 216 void grease()
 217 {
 218   if (!validate_sector_player()) return;
 219   ::Player* tux = Sector::current()->player; // scripting::Player != ::Player
 220   tux->get_physic().set_velocity_x(tux->get_physic().get_velocity_x()*3);
 221 }
 222
 223 void invincible()
 224 {
 225   if (!validate_sector_player()) return;
 226   ::Player* tux = Sector::current()->player;
 227   tux->invincible_timer.start(10000);
 228 }
 229
 230 void ghost()
 231 {
 232   if (!validate_sector_player()) return;
 233   ::Player* tux = Sector::current()->player;
 234   tux->set_ghost_mode(true);
 235 }
 236
 237 void mortal()
 238 {
 239   if (!validate_sector_player()) return;
 240   ::Player* tux = Sector::current()->player;
 241   tux->invincible_timer.stop();
 242   tux->set_ghost_mode(false);
 243 }
 244
 245 void restart()
 246 {
 247   if (GameSession::current() == 0)
 248   {
 249     log_info << "No game session" << std::endl;
 250     return;
 251   }
 252   GameSession::current()->restart_level();
 253 }
 254
 255 void whereami()
 256 {
 257   if (!validate_sector_player()) return;
 258   ::Player* tux = Sector::current()->player;
 259   log_info << "You are at x " << tux->get_pos().x << ", y " << tux->get_pos().y << std::endl;
 260 }
 261
 262 void gotoend()
 263 {
 264   if (!validate_sector_player()) return;
 265   ::Player* tux = Sector::current()->player;
 266   tux->move(Vector(
 267               (Sector::current()->get_width()) - (SCREEN_WIDTH*2), 0));
 268   Sector::current()->camera->reset(
 269     Vector(tux->get_pos().x, tux->get_pos().y));
 270 }
 271
 272 void camera()
 273 {
 274   if (!validate_sector_player()) return;
 275   log_info << "Camera is at " << Sector::current()->camera->get_translation().x << "," << Sector::current()->camera->get_translation().y << std::endl;
 276 }
 277
 278 void set_gamma(float gamma) {
 279   SDL_SetGamma(gamma, gamma, gamma);
 280 }
 281
 282 void quit()
 283 {
 284   g_screen_manager->quit();
 285 }
 286
 287 int rand()
 288 {
 289   return systemRandom.rand();
 290 }
 291
 292 void set_game_speed(float speed)
 293 {
 294   ::g_game_speed = speed;
 295 }
 296
 297 void record_demo(const std::string& filename)
 298 {
 299   if (GameSession::current() == 0)
 300   {
 301     log_info << "No game session" << std::endl;
 302     return;
 303   }
 304   GameSession::current()->restart_level();
 305   GameSession::current()->record_demo(filename);
 306 }
 307
 308 void play_demo(const std::string& filename)
 309 {
 310   if (GameSession::current() == 0)
 311   {
 312     log_info << "No game session" << std::endl;
 313     return;
 314   }
 315   // Reset random seed
 316   g_config->random_seed = GameSession::current()->get_demo_random_seed(filename);
 317   g_config->random_seed = systemRandom.srand(g_config->random_seed);
 318   GameSession::current()->restart_level();
 319   GameSession::current()->play_demo(filename);
 320 }
 321
 322 }
 323
 324 /* EOF */