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