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/physfs_stream.hpp"
  24 #include "supertux/fadeout.hpp"
  25 #include "supertux/game_session.hpp"
  26 #include "supertux/gameconfig.hpp"
  27 #include "supertux/main.hpp"
  28 #include "supertux/mainloop.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 extern float g_game_speed;
  40
  41 namespace Scripting {
  42
  43 SQInteger display(HSQUIRRELVM vm)
  44 {
  45   Console::output << squirrel2string(vm, -1) << std::endl;
  46   return 0;
  47 }
  48
  49 void print_stacktrace(HSQUIRRELVM vm)
  50 {
  51   print_squirrel_stack(vm);
  52 }
  53
  54 SQInteger get_current_thread(HSQUIRRELVM vm)
  55 {
  56   sq_pushobject(vm, vm_to_object(vm));
  57   return 1;
  58 }
  59
  60 void wait(HSQUIRRELVM vm, float seconds)
  61 {
  62   TimeScheduler::instance->schedule_thread(vm, game_time + seconds);
  63 }
  64
  65 void wait_for_screenswitch(HSQUIRRELVM vm)
  66 {
  67   g_main_loop->waiting_threads.add(vm);
  68 }
  69
  70 void exit_screen()
  71 {
  72   g_main_loop->exit_screen();
  73 }
  74
  75 void fadeout_screen(float seconds)
  76 {
  77   g_main_loop->set_screen_fade(new FadeOut(seconds));
  78 }
  79
  80 void shrink_screen(float dest_x, float dest_y, float seconds)
  81 {
  82   g_main_loop->set_screen_fade(new ShrinkFade(Vector(dest_x, dest_y), seconds));
  83 }
  84
  85 void abort_screenfade()
  86 {
  87   g_main_loop->set_screen_fade(NULL);
  88 }
  89
  90 std::string translate(const std::string& text)
  91 {
  92   return dictionary_manager.get_dictionary().translate(text);
  93 }
  94
  95 void display_text_file(const std::string& filename)
  96 {
  97   g_main_loop->push_screen(new TextScroller(filename));
  98 }
  99
 100 void load_worldmap(const std::string& filename)
 101 {
 102   using namespace WorldMapNS;
 103
 104   g_main_loop->push_screen(new WorldMap(filename));
 105 }
 106
 107 void load_level(const std::string& filename)
 108 {
 109   g_main_loop->push_screen(new GameSession(filename));
 110 }
 111
 112 static SQInteger squirrel_read_char(SQUserPointer file)
 113 {
 114   std::istream* in = reinterpret_cast<std::istream*> (file);
 115   char c = in->get();
 116   if(in->eof())
 117     return 0;
 118
 119   return c;
 120 }
 121
 122 void import(HSQUIRRELVM vm, const std::string& filename)
 123 {
 124   IFileStream in(filename);
 125
 126   if(SQ_FAILED(sq_compile(vm, squirrel_read_char, &in,
 127                           filename.c_str(), SQTrue)))
 128     throw SquirrelError(vm, "Couldn't parse script");
 129
 130   sq_pushroottable(vm);
 131   if(SQ_FAILED(sq_call(vm, 1, SQFalse, SQTrue))) {
 132     sq_pop(vm, 1);
 133     throw SquirrelError(vm, "Couldn't execute script");
 134   }
 135   sq_pop(vm, 1);
 136 }
 137
 138 void debug_collrects(bool enable)
 139 {
 140   Sector::show_collrects = enable;
 141 }
 142
 143 void debug_show_fps(bool enable)
 144 {
 145   g_config->show_fps = enable;
 146 }
 147
 148 void debug_draw_solids_only(bool enable)
 149 {
 150   Sector::draw_solids_only = enable;
 151 }
 152
 153 void debug_worldmap_ghost(bool enable)
 154 {
 155   using namespace WorldMapNS;
 156
 157   if(WorldMap::current() == NULL)
 158     throw std::runtime_error("Can't change ghost mode without active WorldMap");
 159
 160   WorldMap::current()->get_tux()->set_ghost_mode(enable);
 161 }
 162
 163 void save_state()
 164 {
 165   using namespace WorldMapNS;
 166
 167   if(World::current() == NULL || WorldMap::current() == NULL)
 168     throw std::runtime_error("Can't save state without active World");
 169
 170   WorldMap::current()->save_state();
 171   World::current()->save_state();
 172 }
 173
 174 void update_worldmap()
 175 {
 176   using namespace WorldMapNS;
 177
 178   if(WorldMap::current() == NULL)
 179     throw std::runtime_error("Can't update Worldmap: none active");
 180
 181   WorldMap::current()->load_state();
 182 }
 183
 184 // not added to header, function to only be used by others
 185 // in this file
 186 bool validate_sector_player()
 187 {
 188   if (Sector::current() == 0)
 189   {
 190     log_info << "No current sector." << std::endl;
 191     return false;
 192   }
 193
 194   if (Sector::current()->player == 0)
 195   {
 196     log_info << "No player." << std::endl;
 197     return false;
 198   }
 199   return true;
 200 }
 201
 202 void play_music(const std::string& filename)
 203 {
 204   sound_manager->play_music(filename);
 205 }
 206
 207 void play_sound(const std::string& filename)
 208 {
 209   sound_manager->play(filename);
 210 }
 211
 212 void grease()
 213 {
 214   if (!validate_sector_player()) return;
 215   ::Player* tux = Sector::current()->player; // Scripting::Player != ::Player
 216   tux->get_physic().set_velocity_x(tux->get_physic().get_velocity_x()*3);
 217 }
 218
 219 void invincible()
 220 {
 221   if (!validate_sector_player()) return;
 222   ::Player* tux = Sector::current()->player;
 223   tux->invincible_timer.start(10000);
 224 }
 225
 226 void ghost()
 227 {
 228   if (!validate_sector_player()) return;
 229   ::Player* tux = Sector::current()->player;
 230   tux->set_ghost_mode(true);
 231 }
 232
 233 void mortal()
 234 {
 235   if (!validate_sector_player()) return;
 236   ::Player* tux = Sector::current()->player;
 237   tux->invincible_timer.stop();
 238   tux->set_ghost_mode(false);
 239 }
 240
 241 void restart()
 242 {
 243   if (GameSession::current() == 0)
 244   {
 245     log_info << "No game session" << std::endl;
 246     return;
 247   }
 248   GameSession::current()->restart_level();
 249 }
 250
 251 void whereami()
 252 {
 253   if (!validate_sector_player()) return;
 254   ::Player* tux = Sector::current()->player;
 255   log_info << "You are at x " << tux->get_pos().x << ", y " << tux->get_pos().y << std::endl;
 256 }
 257
 258 void gotoend()
 259 {
 260   if (!validate_sector_player()) return;
 261   ::Player* tux = Sector::current()->player;
 262   tux->move(Vector(
 263               (Sector::current()->get_width()) - (SCREEN_WIDTH*2), 0));
 264   Sector::current()->camera->reset(
 265     Vector(tux->get_pos().x, tux->get_pos().y));
 266 }
 267
 268 void camera()
 269 {
 270   if (!validate_sector_player()) return;
 271   log_info << "Camera is at " << Sector::current()->camera->get_translation().x << "," << Sector::current()->camera->get_translation().y << std::endl;
 272 }
 273
 274 void set_gamma(float gamma) {
 275   SDL_SetGamma(gamma, gamma, gamma);
 276 }
 277
 278 void quit()
 279 {
 280   g_main_loop->quit();
 281 }
 282
 283 int rand()
 284 {
 285   return systemRandom.rand();
 286 }
 287
 288 void set_game_speed(float speed)
 289 {
 290   ::g_game_speed = speed;
 291 }
 292
 293 void record_demo(const std::string& filename)
 294 {
 295   if (GameSession::current() == 0)
 296   {
 297     log_info << "No game session" << std::endl;
 298     return;
 299   }
 300   GameSession::current()->restart_level();
 301   GameSession::current()->record_demo(filename);
 302 }
 303
 304 void play_demo(const std::string& filename)
 305 {
 306   if (GameSession::current() == 0)
 307   {
 308     log_info << "No game session" << std::endl;
 309     return;
 310   }
 311   // Reset random seed
 312   g_config->random_seed = GameSession::current()->get_demo_random_seed(filename);
 313   g_config->random_seed = systemRandom.srand(g_config->random_seed);
 314   GameSession::current()->restart_level();
 315   GameSession::current()->play_demo(filename);
 316 }
 317
 318 }
 319
 320 /* EOF */