src/scripting/functions.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux
   4 //  Copyright (C) 2006 Matthias Braun <matze@braunis.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 #include <config.h>
  21
  22 #include <memory>
  23 #include <stdio.h>
  24 #include <string>
  25 #include <squirrel.h>
  26 #include <sqstdio.h>
  27 #include "textscroller.hpp"
  28 #include "functions.hpp"
  29 #include "game_session.hpp"
  30 #include "tinygettext/tinygettext.hpp"
  31 #include "physfs/physfs_stream.hpp"
  32 #include "resources.hpp"
  33 #include "gettext.hpp"
  34 #include "log.hpp"
  35 #include "mainloop.hpp"
  36 #include "worldmap/worldmap.hpp"
  37 #include "worldmap/tux.hpp"
  38 #include "world.hpp"
  39 #include "sector.hpp"
  40 #include "gameconfig.hpp"
  41 #include "object/player.hpp"
  42 #include "object/tilemap.hpp"
  43 #include "main.hpp"
  44 #include "fadeout.hpp"
  45 #include "shrinkfade.hpp"
  46 #include "object/camera.hpp"
  47 #include "flip_level_transformer.hpp"
  48 #include "audio/sound_manager.hpp"
  49 #include "random_generator.hpp"
  50
  51 #include "squirrel_error.hpp"
  52 #include "squirrel_util.hpp"
  53 #include "time_scheduler.hpp"
  54
  55 extern float game_speed;
  56
  57 namespace Scripting
  58 {
  59
  60 SQInteger display(HSQUIRRELVM vm)
  61 {
  62   Console::output << squirrel2string(vm, -1) << std::endl;
  63   return 0;
  64 }
  65
  66 void print_stacktrace(HSQUIRRELVM vm)
  67 {
  68   print_squirrel_stack(vm);
  69 }
  70
  71 SQInteger get_current_thread(HSQUIRRELVM vm)
  72 {
  73   sq_pushobject(vm, vm_to_object(vm));
  74   return 1;
  75 }
  76
  77 void wait(HSQUIRRELVM vm, float seconds)
  78 {
  79   TimeScheduler::instance->schedule_thread(vm, game_time + seconds);
  80 }
  81
  82 void wait_for_screenswitch(HSQUIRRELVM vm)
  83 {
  84   main_loop->waiting_threads.add(vm);
  85 }
  86
  87 void exit_screen()
  88 {
  89   main_loop->exit_screen();
  90 }
  91
  92 void fadeout_screen(float seconds)
  93 {
  94   main_loop->set_screen_fade(new FadeOut(seconds));
  95 }
  96
  97 void shrink_screen(float dest_x, float dest_y, float seconds)
  98 {
  99   main_loop->set_screen_fade(new ShrinkFade(Vector(dest_x, dest_y), seconds));
 100 }
 101
 102 void abort_screenfade()
 103 {
 104   main_loop->set_screen_fade(NULL);
 105 }
 106
 107 std::string translate(const std::string& text)
 108 {
 109   return dictionary_manager.get_dictionary().translate(text);
 110 }
 111
 112 void display_text_file(const std::string& filename)
 113 {
 114   main_loop->push_screen(new TextScroller(filename));
 115 }
 116
 117 void load_worldmap(const std::string& filename)
 118 {
 119   using namespace WorldMapNS;
 120
 121   main_loop->push_screen(new WorldMap(filename));
 122 }
 123
 124 void load_level(const std::string& filename)
 125 {
 126   main_loop->push_screen(new GameSession(filename));
 127 }
 128
 129 static SQInteger squirrel_read_char(SQUserPointer file)
 130 {
 131   std::istream* in = reinterpret_cast<std::istream*> (file);
 132   char c = in->get();
 133   if(in->eof())
 134     return 0;
 135
 136   return c;
 137 }
 138
 139 void import(HSQUIRRELVM vm, const std::string& filename)
 140 {
 141   IFileStream in(filename);
 142
 143   if(SQ_FAILED(sq_compile(vm, squirrel_read_char, &in,
 144           filename.c_str(), SQTrue)))
 145     throw SquirrelError(vm, "Couldn't parse script");
 146
 147   sq_pushroottable(vm);
 148   if(SQ_FAILED(sq_call(vm, 1, SQFalse, SQTrue))) {
 149     sq_pop(vm, 1);
 150     throw SquirrelError(vm, "Couldn't execute script");
 151   }
 152   sq_pop(vm, 1);
 153 }
 154
 155 void debug_collrects(bool enable)
 156 {
 157   Sector::show_collrects = enable;
 158 }
 159
 160 void debug_show_fps(bool enable)
 161 {
 162   config->show_fps = enable;
 163 }
 164
 165 void debug_draw_solids_only(bool enable)
 166 {
 167   Sector::draw_solids_only = enable;
 168 }
 169
 170 void debug_worldmap_ghost(bool enable)
 171 {
 172   using namespace WorldMapNS;
 173
 174   if(WorldMap::current() == NULL)
 175     throw std::runtime_error("Can't change ghost mode without active WorldMap");
 176
 177   WorldMap::current()->get_tux()->set_ghost_mode(enable);
 178 }
 179
 180 void save_state()
 181 {
 182   using namespace WorldMapNS;
 183
 184   if(World::current() == NULL || WorldMap::current() == NULL)
 185     throw std::runtime_error("Can't save state without active World");
 186
 187   WorldMap::current()->save_state();
 188   World::current()->save_state();
 189 }
 190
 191 void update_worldmap()
 192 {
 193   using namespace WorldMapNS;
 194
 195   if(WorldMap::current() == NULL)
 196     throw std::runtime_error("Can't update Worldmap: none active");
 197
 198   WorldMap::current()->load_state();
 199 }
 200
 201 // not added to header, function to only be used by others
 202 // in this file
 203 bool validate_sector_player()
 204 {
 205   if (Sector::current() == 0)
 206   {
 207     log_info << "No current sector." << std::endl;
 208     return false;
 209   }
 210
 211   if (Sector::current()->player == 0)
 212   {
 213     log_info << "No player." << std::endl;
 214     return false;
 215   }
 216   return true;
 217 }
 218
 219 void play_music(const std::string& filename)
 220 {
 221   sound_manager->play_music(filename);
 222 }
 223
 224 void play_sound(const std::string& filename)
 225 {
 226   sound_manager->play(filename);
 227 }
 228
 229 void grease()
 230 {
 231   if (!validate_sector_player()) return;
 232   ::Player* tux = Sector::current()->player; // Scripting::Player != ::Player
 233   tux->physic.set_velocity_x(tux->physic.get_velocity_x()*3);
 234 }
 235
 236 void invincible()
 237 {
 238   if (!validate_sector_player()) return;
 239   ::Player* tux = Sector::current()->player;
 240   tux->invincible_timer.start(10000);
 241 }
 242
 243 void ghost()
 244 {
 245   if (!validate_sector_player()) return;
 246   ::Player* tux = Sector::current()->player;
 247   tux->set_ghost_mode(true);
 248 }
 249
 250 void mortal()
 251 {
 252   if (!validate_sector_player()) return;
 253   ::Player* tux = Sector::current()->player;
 254   tux->invincible_timer.stop();
 255   tux->set_ghost_mode(false);
 256 }
 257
 258 void restart()
 259 {
 260   if (GameSession::current() == 0)
 261   {
 262     log_info << "No game session" << std::endl;
 263     return;
 264   }
 265   GameSession::current()->restart_level();
 266 }
 267
 268 void whereami()
 269 {
 270   if (!validate_sector_player()) return;
 271   ::Player* tux = Sector::current()->player;
 272   log_info << "You are at x " << tux->get_pos().x << ", y " << tux->get_pos().y << std::endl;
 273 }
 274
 275 void gotoend()
 276 {
 277   if (!validate_sector_player()) return;
 278   ::Player* tux = Sector::current()->player;
 279   tux->move(Vector(
 280           (Sector::current()->get_width()) - (SCREEN_WIDTH*2), 0));
 281   Sector::current()->camera->reset(
 282         Vector(tux->get_pos().x, tux->get_pos().y));
 283 }
 284
 285 void camera()
 286 {
 287   if (!validate_sector_player()) return;
 288   log_info << "Camera is at " << Sector::current()->camera->get_translation().x << "," << Sector::current()->camera->get_translation().y << std::endl;
 289 }
 290
 291 void set_gamma(float gamma) {
 292   SDL_SetGamma(gamma, gamma, gamma);
 293 }
 294
 295 void quit()
 296 {
 297   main_loop->quit();
 298 }
 299
 300 int rand()
 301 {
 302   return systemRandom.rand();
 303 }
 304
 305 void set_game_speed(float speed)
 306 {
 307   ::game_speed = speed;
 308 }
 309
 310 void record_demo(const std::string& filename)
 311 {
 312   if (GameSession::current() == 0)
 313   {
 314     log_info << "No game session" << std::endl;
 315     return;
 316   }
 317   GameSession::current()->restart_level();
 318   GameSession::current()->record_demo(filename);
 319 }
 320
 321 void play_demo(const std::string& filename)
 322 {
 323   if (GameSession::current() == 0)
 324   {
 325     log_info << "No game session" << std::endl;
 326     return;
 327   }
 328   // Reset random seed
 329   config->random_seed = GameSession::current()->get_demo_random_seed(filename);
 330   config->random_seed = systemRandom.srand(config->random_seed);
 331   GameSession::current()->restart_level();
 332   GameSession::current()->play_demo(filename);
 333 }
 334
 335 }