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