src/game_session.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux
   4 //  Copyright (C) 2000 Bill Kendrick <bill@newbreedsoftware.com>
   5 //  Copyright (C) 2004 Tobias Glaesser <tobi.web@gmx.de>
   6 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmx.de>
   7 //
   8 //  This program is free software; you can redistribute it and/or
   9 //  modify it under the terms of the GNU General Public License
  10 //  as published by the Free Software Foundation; either version 2
  11 //  of the License, or (at your option) any later version.
  12 //
  13 //  This program is distributed in the hope that it will be useful,
  14 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 //  GNU General Public License for more details.
  17 //
  18 //  You should have received a copy of the GNU General Public License
  19 //  along with this program; if not, write to the Free Software
  20 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 #include <config.h>
  22
  23 #include <iostream>
  24 #include <fstream>
  25 #include <sstream>
  26 #include <cassert>
  27 #include <cstdio>
  28 #include <cstdlib>
  29 #include <cmath>
  30 #include <cstring>
  31 #include <cerrno>
  32 #include <unistd.h>
  33 #include <ctime>
  34 #include <stdexcept>
  35
  36 #include <SDL.h>
  37
  38 #include "game_session.hpp"
  39 #include "video/screen.hpp"
  40 #include "audio/sound_manager.hpp"
  41 #include "gui/menu.hpp"
  42 #include "sector.hpp"
  43 #include "level.hpp"
  44 #include "tile.hpp"
  45 #include "player_status.hpp"
  46 #include "object/particlesystem.hpp"
  47 #include "object/background.hpp"
  48 #include "object/tilemap.hpp"
  49 #include "object/camera.hpp"
  50 #include "object/player.hpp"
  51 #include "lisp/lisp.hpp"
  52 #include "lisp/parser.hpp"
  53 #include "resources.hpp"
  54 #include "worldmap.hpp"
  55 #include "misc.hpp"
  56 #include "statistics.hpp"
  57 #include "timer.hpp"
  58 #include "object/fireworks.hpp"
  59 #include "textscroller.hpp"
  60 #include "control/codecontroller.hpp"
  61 #include "control/joystickkeyboardcontroller.hpp"
  62 #include "main.hpp"
  63 #include "file_system.hpp"
  64 #include "gameconfig.hpp"
  65 #include "gettext.hpp"
  66
  67 // the engine will be run with a logical framerate of 64fps.
  68 // We chose 64fps here because it is a power of 2, so 1/64 gives an "even"
  69 // binary fraction...
  70 static const float LOGICAL_FPS = 64.0;
  71
  72 GameSession* GameSession::current_ = 0;
  73
  74 GameSession::GameSession(const std::string& levelfile_, GameSessionMode mode,
  75     Statistics* statistics)
  76   : level(0), currentsector(0), mode(mode),
  77     end_sequence(NO_ENDSEQUENCE), end_sequence_controller(0),
  78     levelfile(levelfile_), best_level_statistics(statistics),
  79     capture_demo_stream(0), playback_demo_stream(0), demo_controller(0)
  80 {
  81   current_ = this;
  82   currentsector = 0;
  83
  84   game_pause = false;
  85   music_playing = false;
  86   fps_fps = 0;
  87
  88   context = new DrawingContext();
  89
  90   restart_level();
  91 }
  92
  93 void
  94 GameSession::restart_level()
  95 {
  96   game_pause   = false;
  97   exit_status  = ES_NONE;
  98   end_sequence = NO_ENDSEQUENCE;
  99
 100   main_controller->reset();
 101
 102   delete level;
 103   currentsector = 0;
 104
 105   level = new Level;
 106   level->load(levelfile);
 107
 108   global_stats.reset();
 109   global_stats.set_total_points(COINS_COLLECTED_STAT, level->get_total_coins());
 110   global_stats.set_total_points(BADGUYS_KILLED_STAT, level->get_total_badguys());
 111   //global_stats.set_total_points(TIME_NEEDED_STAT, level->timelimit);
 112
 113   if(reset_sector != "") {
 114     currentsector = level->get_sector(reset_sector);
 115     if(!currentsector) {
 116       std::stringstream msg;
 117       msg << "Couldn't find sector '" << reset_sector << "' for resetting tux.";
 118       throw std::runtime_error(msg.str());
 119     }
 120     currentsector->activate(reset_pos);
 121   } else {
 122     currentsector = level->get_sector("main");
 123     if(!currentsector)
 124       throw std::runtime_error("Couldn't find main sector");
 125     currentsector->activate("main");
 126   }
 127
 128   if(mode == ST_GL_PLAY || mode == ST_GL_LOAD_LEVEL_FILE)
 129     levelintro();
 130
 131   if (!music_playing)
 132   {
 133     currentsector->play_music(LEVEL_MUSIC);
 134     music_playing = true;
 135   }
 136
 137   if(capture_file != "")
 138     record_demo(capture_file);
 139 }
 140
 141 GameSession::~GameSession()
 142 {
 143   delete capture_demo_stream;
 144   delete playback_demo_stream;
 145   delete demo_controller;
 146
 147   delete end_sequence_controller;
 148   delete level;
 149   delete context;
 150 }
 151
 152 void
 153 GameSession::record_demo(const std::string& filename)
 154 {
 155   delete capture_demo_stream;
 156
 157   capture_demo_stream = new std::ofstream(filename.c_str());
 158   if(!capture_demo_stream->good()) {
 159     std::stringstream msg;
 160     msg << "Couldn't open demo file '" << filename << "' for writing.";
 161     throw std::runtime_error(msg.str());
 162   }
 163   capture_file = filename;
 164 }
 165
 166 void
 167 GameSession::play_demo(const std::string& filename)
 168 {
 169   delete playback_demo_stream;
 170   delete demo_controller;
 171
 172   playback_demo_stream = new std::ifstream(filename.c_str());
 173   if(!playback_demo_stream->good()) {
 174     std::stringstream msg;
 175     msg << "Couldn't open demo file '" << filename << "' for reading.";
 176     throw std::runtime_error(msg.str());
 177   }
 178
 179   Player& tux = *currentsector->player;
 180   demo_controller = new CodeController();
 181   tux.set_controller(demo_controller);
 182 }
 183
 184 void
 185 GameSession::levelintro()
 186 {
 187   char str[60];
 188
 189   DrawingContext context;
 190   for(Sector::GameObjects::iterator i = currentsector->gameobjects.begin();
 191       i != currentsector->gameobjects.end(); ++i) {
 192     Background* background = dynamic_cast<Background*> (*i);
 193     if(background) {
 194       background->draw(context);
 195     }
 196   }
 197
 198 //  context.draw_text(gold_text, level->get_name(), Vector(SCREEN_WIDTH/2, 160),
 199 //      CENTER_ALLIGN, LAYER_FOREGROUND1);
 200   context.draw_center_text(gold_text, level->get_name(), Vector(0, 160),
 201       LAYER_FOREGROUND1);
 202
 203   sprintf(str, "TUX x %d", player_status.lives);
 204   context.draw_text(white_text, str, Vector(SCREEN_WIDTH/2, 210),
 205       CENTER_ALLIGN, LAYER_FOREGROUND1);
 206
 207   if((level->get_author().size()) && (level->get_author() != "SuperTux Team"))
 208     //TODO make author check case/blank-insensitive
 209     context.draw_text(white_small_text,
 210       std::string(_("contributed by ")) + level->get_author(),
 211       Vector(SCREEN_WIDTH/2, 350), CENTER_ALLIGN, LAYER_FOREGROUND1);
 212
 213
 214   if(best_level_statistics != NULL)
 215     best_level_statistics->draw_message_info(context, _("Best Level Statistics"));
 216
 217   context.do_drawing();
 218
 219   wait_for_event(1.0, 3.0);
 220 }
 221
 222 void
 223 GameSession::on_escape_press()
 224 {
 225   if(currentsector->player->is_dying() || end_sequence != NO_ENDSEQUENCE)
 226     return;   // don't let the player open the menu, when he is dying
 227
 228   if(mode == ST_GL_TEST) {
 229     exit_status = ES_LEVEL_ABORT;
 230   } else if (!Menu::current()) {
 231     Menu::set_current(game_menu);
 232     game_menu->set_active_item(MNID_CONTINUE);
 233     game_pause = true;
 234   } else {
 235     game_pause = false;
 236   }
 237 }
 238
 239 void
 240 GameSession::process_events()
 241 {
 242   Player& tux = *currentsector->player;
 243   main_controller->update();
 244
 245   // end of pause mode?
 246   if(!Menu::current() && game_pause) {
 247     game_pause = false;
 248   }
 249
 250   if (end_sequence != NO_ENDSEQUENCE) {
 251     if(end_sequence_controller == 0) {
 252       end_sequence_controller = new CodeController();
 253       tux.set_controller(end_sequence_controller);
 254     }
 255
 256     end_sequence_controller->press(Controller::RIGHT);
 257
 258     if (int(last_x_pos) == int(tux.get_pos().x))
 259       end_sequence_controller->press(Controller::JUMP);
 260     last_x_pos = tux.get_pos().x;
 261   }
 262
 263   main_controller->update();
 264   SDL_Event event;
 265   while (SDL_PollEvent(&event)) {
 266     /* Check for menu-events, if the menu is shown */
 267     if (Menu::current())
 268       Menu::current()->event(event);
 269     main_controller->process_event(event);
 270     if(event.type == SDL_QUIT)
 271       throw std::runtime_error("Received window close");
 272   }
 273
 274   // playback a demo?
 275   if(playback_demo_stream != 0) {
 276     demo_controller->update();
 277     char left = false;
 278     char right = false;
 279     char up = false;
 280     char down = false;
 281     char jump = false;
 282     char action = false;
 283     playback_demo_stream->get(left);
 284     playback_demo_stream->get(right);
 285     playback_demo_stream->get(up);
 286     playback_demo_stream->get(down);
 287     playback_demo_stream->get(jump);
 288     playback_demo_stream->get(action);
 289     demo_controller->press(Controller::LEFT, left);
 290     demo_controller->press(Controller::RIGHT, right);
 291     demo_controller->press(Controller::UP, up);
 292     demo_controller->press(Controller::DOWN, down);
 293     demo_controller->press(Controller::JUMP, jump);
 294     demo_controller->press(Controller::ACTION, action);
 295   }
 296
 297   // save input for demo?
 298   if(capture_demo_stream != 0) {
 299     capture_demo_stream ->put(main_controller->hold(Controller::LEFT));
 300     capture_demo_stream ->put(main_controller->hold(Controller::RIGHT));
 301     capture_demo_stream ->put(main_controller->hold(Controller::UP));
 302     capture_demo_stream ->put(main_controller->hold(Controller::DOWN));
 303     capture_demo_stream ->put(main_controller->hold(Controller::JUMP));
 304     capture_demo_stream ->put(main_controller->hold(Controller::ACTION));
 305   }
 306 }
 307
 308 void
 309 GameSession::try_cheats()
 310 {
 311   if(currentsector == 0)
 312     return;
 313   Player& tux = *currentsector->player;
 314
 315   // Cheating words (the goal of this is really for debugging,
 316   // but could be used for some cheating, nothing wrong with that)
 317   if(main_controller->check_cheatcode("grow")) {
 318     tux.set_bonus(GROWUP_BONUS, false);
 319   }
 320   if(main_controller->check_cheatcode("fire")) {
 321     tux.set_bonus(FIRE_BONUS, false);
 322   }
 323   if(main_controller->check_cheatcode("ice")) {
 324     tux.set_bonus(ICE_BONUS, false);
 325   }
 326   if(main_controller->check_cheatcode("lifeup")) {
 327     player_status.lives++;
 328   }
 329   if(main_controller->check_cheatcode("lifedown")) {
 330     player_status.lives--;
 331   }
 332   if(main_controller->check_cheatcode("grease")) {
 333     tux.physic.set_velocity_x(tux.physic.get_velocity_x()*3);
 334   }
 335   if(main_controller->check_cheatcode("invincible")) {
 336     // be invincle for the rest of the level
 337     tux.invincible_timer.start(10000);
 338   }
 339   if(main_controller->check_cheatcode("shrink")) {
 340     // remove powerups
 341     tux.kill(tux.SHRINK);
 342   }
 343   if(main_controller->check_cheatcode("kill")) {
 344     // kill Tux, but without losing a life
 345     player_status.lives++;
 346     tux.kill(tux.KILL);
 347   }
 348 #if 0
 349   if(main_controller->check_cheatcode("grid")) {
 350     // toggle debug grid
 351     debug_grid = !debug_grid;
 352   }
 353 #endif
 354   if(main_controller->check_cheatcode("hover")) {
 355     // toggle hover ability on/off
 356     tux.enable_hover = !tux.enable_hover;
 357   }
 358   if(main_controller->check_cheatcode("gotoend")) {
 359     // goes to the end of the level
 360     tux.move(Vector(
 361           (currentsector->solids->get_width()*32) - (SCREEN_WIDTH*2), 0));
 362     currentsector->camera->reset(
 363         Vector(tux.get_pos().x, tux.get_pos().y));
 364   }
 365   if(main_controller->check_cheatcode("finish")) {
 366     // finish current sector
 367     exit_status = ES_LEVEL_FINISHED;
 368     // don't add points to stats though...
 369   }
 370   // temporary to help player's choosing a flapping
 371   if(main_controller->check_cheatcode("marek")) {
 372     tux.flapping_mode = Player::MAREK_FLAP;
 373   }
 374   if(main_controller->check_cheatcode("ricardo")) {
 375     tux.flapping_mode = Player::RICARDO_FLAP;
 376   }
 377   if(main_controller->check_cheatcode("ryan")) {
 378     tux.flapping_mode = Player::RYAN_FLAP;
 379   }
 380 }
 381
 382 void
 383 GameSession::check_end_conditions()
 384 {
 385   Player* tux = currentsector->player;
 386
 387   /* End of level? */
 388   if(end_sequence && endsequence_timer.check()) {
 389     exit_status = ES_LEVEL_FINISHED;
 390     return;
 391   } else if (!end_sequence && tux->is_dead()) {
 392     if (player_status.lives < 0) { // No more lives!?
 393       exit_status = ES_GAME_OVER;
 394     } else { // Still has lives, so reset Tux to the levelstart
 395       restart_level();
 396     }
 397
 398     return;
 399   }
 400 }
 401
 402 void
 403 GameSession::update(float elapsed_time)
 404 {
 405   // handle controller
 406   if(main_controller->pressed(Controller::PAUSE_MENU))
 407     on_escape_press();
 408
 409   // advance timers
 410   if(!currentsector->player->growing_timer.started()) {
 411     // Update Tux and the World
 412     currentsector->update(elapsed_time);
 413   }
 414
 415   // respawning in new sector?
 416   if(newsector != "" && newspawnpoint != "") {
 417     Sector* sector = level->get_sector(newsector);
 418     if(sector == 0) {
 419       std::cerr << "Sector '" << newsector << "' not found.\n";
 420     }
 421     sector->activate(newspawnpoint);
 422     sector->play_music(LEVEL_MUSIC);
 423     currentsector = sector;
 424     newsector = "";
 425     newspawnpoint = "";
 426   }
 427
 428   // update sounds
 429   sound_manager->set_listener_position(currentsector->player->get_pos());
 430 }
 431
 432 void
 433 GameSession::draw()
 434 {
 435   currentsector->draw(*context);
 436   drawstatus(*context);
 437
 438   if(game_pause)
 439     draw_pause();
 440
 441   if(Menu::current()) {
 442     Menu::current()->draw(*context);
 443   }
 444
 445   context->do_drawing();
 446 }
 447
 448 void
 449 GameSession::draw_pause()
 450 {
 451   int x = SCREEN_HEIGHT / 20;
 452   for(int i = 0; i < x; ++i) {
 453     context->draw_filled_rect(
 454         Vector(i % 2 ? (pause_menu_frame * i)%SCREEN_WIDTH :
 455           -((pause_menu_frame * i)%SCREEN_WIDTH)
 456           ,(i*20+pause_menu_frame)%SCREEN_HEIGHT),
 457         Vector(SCREEN_WIDTH,10),
 458         Color(20,20,20, rand() % 20 + 1), LAYER_FOREGROUND1+1);
 459   }
 460
 461   context->draw_filled_rect(
 462       Vector(0,0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
 463       Color(rand() % 50, rand() % 50, rand() % 50, 128), LAYER_FOREGROUND1);
 464 #if 0
 465   context->draw_text(blue_text, _("PAUSE - Press 'P' To Play"),
 466       Vector(SCREEN_WIDTH/2, 230), CENTER_ALLIGN, LAYER_FOREGROUND1+2);
 467
 468   const char* str1 = _("Playing: ");
 469   const char* str2 = level->get_name().c_str();
 470
 471   context->draw_text(blue_text, str1,
 472       Vector((SCREEN_WIDTH - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2, 340),
 473       LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 474   context->draw_text(white_text, str2,
 475       Vector(((SCREEN_WIDTH - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2)+blue_text->get_text_width(str1), 340),
 476       LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 477 #endif
 478 }
 479
 480 void
 481 GameSession::process_menu()
 482 {
 483   Menu* menu = Menu::current();
 484   if(menu) {
 485     menu->update();
 486
 487     if(menu == game_menu) {
 488       switch (game_menu->check()) {
 489         case MNID_CONTINUE:
 490           Menu::set_current(0);
 491           break;
 492         case MNID_ABORTLEVEL:
 493           Menu::set_current(0);
 494           exit_status = ES_LEVEL_ABORT;
 495           break;
 496       }
 497     } else if(menu == options_menu) {
 498       process_options_menu();
 499     } else if(menu == load_game_menu ) {
 500       process_load_game_menu();
 501     }
 502   }
 503 }
 504
 505
 506 GameSession::ExitStatus
 507 GameSession::run()
 508 {
 509   Menu::set_current(0);
 510   current_ = this;
 511
 512   int fps_cnt = 0;
 513
 514   // Eat unneeded events
 515   SDL_Event event;
 516   while(SDL_PollEvent(&event))
 517   {}
 518
 519   draw();
 520
 521   Uint32 fps_ticks = SDL_GetTicks();
 522   Uint32 fps_nextframe_ticks = SDL_GetTicks();
 523   Uint32 ticks;
 524   bool skipdraw = false;
 525
 526   while (exit_status == ES_NONE) {
 527     // we run in a logical framerate so elapsed time is a constant
 528     static const float elapsed_time = 1.0 / LOGICAL_FPS;
 529     // old code... float elapsed_time = float(ticks - lastticks) / 1000.;
 530     if(!game_pause)
 531       game_time += elapsed_time;
 532
 533     // regulate fps
 534     ticks = SDL_GetTicks();
 535     if(ticks > fps_nextframe_ticks) {
 536       if(skipdraw == true) {
 537         // already skipped last frame? we have to slow down the game then...
 538         skipdraw = false;
 539         fps_nextframe_ticks -= (Uint32) (1000.0 / LOGICAL_FPS);
 540       } else {
 541         // don't draw all frames when we're getting too slow
 542         skipdraw = true;
 543       }
 544     } else {
 545       skipdraw = false;
 546       while(fps_nextframe_ticks > ticks) {
 547         /* just wait */
 548         // If we really have to wait long, then do an imprecise SDL_Delay()
 549         Uint32 diff = fps_nextframe_ticks - ticks;
 550         if(diff > 15) {
 551           SDL_Delay(diff - 10);
 552         }
 553         ticks = SDL_GetTicks();
 554       }
 555     }
 556     fps_nextframe_ticks = ticks + (Uint32) (1000.0 / LOGICAL_FPS);
 557
 558 #if 0
 559     float diff = SDL_GetTicks() - fps_nextframe_ticks;
 560     if (diff > 5.0) {
 561          // sets the ticks that must have elapsed
 562         fps_nextframe_ticks = SDL_GetTicks() + (1000.0 / LOGICAL_FPS);
 563     } else {
 564         // sets the ticks that must have elapsed
 565         // in order for the next frame to start.
 566         fps_nextframe_ticks += 1000.0 / LOGICAL_FPS;
 567     }
 568 #endif
 569
 570     process_events();
 571     process_menu();
 572
 573     // Update the world state and all objects in the world
 574     // Do that with a constante time-delta so that the game will run
 575     // determistic and not different on different machines
 576     if(!game_pause && !Menu::current())
 577     {
 578       // Update the world
 579       check_end_conditions();
 580       if (end_sequence == ENDSEQUENCE_RUNNING)
 581         update(elapsed_time/2);
 582       else if(end_sequence == NO_ENDSEQUENCE)
 583         update(elapsed_time);
 584     }
 585     else
 586     {
 587       ++pause_menu_frame;
 588     }
 589
 590     if(!skipdraw)
 591       draw();
 592
 593     // update sounds
 594     sound_manager->update();
 595
 596     /* Time stops in pause mode */
 597     if(game_pause || Menu::current())
 598     {
 599       continue;
 600     }
 601
 602     //frame_rate.update();
 603
 604     /* Handle music: */
 605     if (currentsector->player->invincible_timer.started() && !end_sequence)
 606     {
 607       currentsector->play_music(HERRING_MUSIC);
 608     }
 609     /* or just normal music? */
 610     else if(currentsector->get_music_type() != LEVEL_MUSIC && !end_sequence)
 611     {
 612       currentsector->play_music(LEVEL_MUSIC);
 613     }
 614
 615     /* Calculate frames per second */
 616     if(config->show_fps)
 617     {
 618       ++fps_cnt;
 619
 620       if(SDL_GetTicks() - fps_ticks >= 500)
 621       {
 622         fps_fps = (float) fps_cnt / .5;
 623         fps_cnt = 0;
 624         fps_ticks = SDL_GetTicks();
 625       }
 626     }
 627   }
 628
 629   // just in case
 630   currentsector = 0;
 631   main_controller->reset();
 632   return exit_status;
 633 }
 634
 635 void
 636 GameSession::finish(bool win)
 637 {
 638   if(win)
 639     exit_status = ES_LEVEL_FINISHED;
 640   else
 641     exit_status = ES_LEVEL_ABORT;
 642 }
 643
 644 void
 645 GameSession::respawn(const std::string& sector, const std::string& spawnpoint)
 646 {
 647   newsector = sector;
 648   newspawnpoint = spawnpoint;
 649 }
 650
 651 void
 652 GameSession::set_reset_point(const std::string& sector, const Vector& pos)
 653 {
 654   reset_sector = sector;
 655   reset_pos = pos;
 656 }
 657
 658 std::string
 659 GameSession::get_working_directory()
 660 {
 661   return FileSystem::dirname(levelfile);
 662 }
 663
 664 void
 665 GameSession::display_info_box(const std::string& text)
 666 {
 667   InfoBox* box = new InfoBox(text);
 668
 669   bool running = true;
 670   while(running)  {
 671
 672     main_controller->update();
 673     SDL_Event event;
 674     while (SDL_PollEvent(&event)) {
 675       main_controller->process_event(event);
 676       if(event.type == SDL_QUIT)
 677         throw std::runtime_error("Received window close event");
 678     }
 679
 680     if(main_controller->pressed(Controller::JUMP)
 681         || main_controller->pressed(Controller::ACTION)
 682         || main_controller->pressed(Controller::PAUSE_MENU)
 683         || main_controller->pressed(Controller::MENU_SELECT))
 684       running = false;
 685     box->draw(*context);
 686     draw();
 687   }
 688
 689   delete box;
 690 }
 691
 692 void
 693 GameSession::start_sequence(const std::string& sequencename)
 694 {
 695   if(sequencename == "endsequence" || sequencename == "fireworks") {
 696     if(end_sequence)
 697       return;
 698
 699     end_sequence = ENDSEQUENCE_RUNNING;
 700     endsequence_timer.start(7.0); // 7 seconds until we finish the map
 701     last_x_pos = -1;
 702     sound_manager->play_music("music/leveldone.ogg", false);
 703     currentsector->player->invincible_timer.start(7.0);
 704
 705     if(sequencename == "fireworks") {
 706       currentsector->add_object(new Fireworks());
 707     }
 708   } else if(sequencename == "stoptux") {
 709     end_sequence =  ENDSEQUENCE_WAITING;
 710   } else {
 711     std::cout << "Unknown sequence '" << sequencename << "'.\n";
 712   }
 713 }
 714
 715 /* (Status): */
 716 void
 717 GameSession::drawstatus(DrawingContext& context)
 718 {
 719   player_status.draw(context);
 720
 721   if(config->show_fps) {
 722     char str[60];
 723     snprintf(str, sizeof(str), "%2.1f", fps_fps);
 724     context.draw_text(white_text, "FPS",
 725                       Vector(SCREEN_WIDTH -
 726                              white_text->get_text_width("FPS     "), 40),
 727                       LEFT_ALLIGN, LAYER_FOREGROUND1);
 728     context.draw_text(gold_text, str,
 729                       Vector(SCREEN_WIDTH-4*16, 40),
 730                       LEFT_ALLIGN, LAYER_FOREGROUND1);
 731   }
 732 }
 733
 734 void
 735 GameSession::drawresultscreen()
 736 {
 737   char str[80];
 738
 739   DrawingContext context;
 740   for(Sector::GameObjects::iterator i = currentsector->gameobjects.begin();
 741       i != currentsector->gameobjects.end(); ++i) {
 742     Background* background = dynamic_cast<Background*> (*i);
 743     if(background) {
 744       background->draw(context);
 745     }
 746   }
 747
 748   context.draw_text(blue_text, _("Result:"), Vector(SCREEN_WIDTH/2, 200),
 749       CENTER_ALLIGN, LAYER_FOREGROUND1);
 750
 751   sprintf(str, _("SCORE: %d"), global_stats.get_points(SCORE_STAT));
 752   context.draw_text(gold_text, str, Vector(SCREEN_WIDTH/2, 224), CENTER_ALLIGN, LAYER_FOREGROUND1);
 753
 754   sprintf(str, _("COINS: %d"), player_status.coins);
 755   context.draw_text(gold_text, str, Vector(SCREEN_WIDTH/2, 256), CENTER_ALLIGN, LAYER_FOREGROUND1);
 756
 757   context.do_drawing();
 758
 759   wait_for_event(2.0, 5.0);
 760 }
 761
 762 std::string slotinfo(int slot)
 763 {
 764   std::string tmp;
 765   std::string slotfile;
 766   std::string title;
 767   std::stringstream stream;
 768   stream << slot;
 769   slotfile = "save/slot" + stream.str() + ".stsg";
 770
 771   try {
 772     lisp::Parser parser;
 773     std::auto_ptr<lisp::Lisp> root (parser.parse(slotfile));
 774
 775     const lisp::Lisp* savegame = root->get_lisp("supertux-savegame");
 776     if(!savegame)
 777       throw std::runtime_error("file is not a supertux-savegame.");
 778
 779     savegame->get("title", title);
 780   } catch(std::exception& e) {
 781     return std::string(_("Slot")) + " " + stream.str() + " - " +
 782       std::string(_("Free"));
 783   }
 784
 785   return std::string("Slot ") + stream.str() + " - " + title;
 786 }
 787
 788 bool process_load_game_menu()
 789 {
 790   int slot = load_game_menu->check();
 791
 792   if(slot == -1)
 793     return false;
 794
 795   if(load_game_menu->get_item_by_id(slot).kind != MN_ACTION)
 796     return false;
 797
 798   std::stringstream stream;
 799   stream << slot;
 800   std::string slotfile = "save/slot" + stream.str() + ".stsg";
 801
 802   sound_manager->stop_music();
 803   fadeout(256);
 804   DrawingContext context;
 805   context.draw_text(white_text, "Loading...",
 806                     Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT/2),
 807                     CENTER_ALLIGN, LAYER_FOREGROUND1);
 808   context.do_drawing();
 809
 810   WorldMapNS::WorldMap worldmap;
 811
 812   worldmap.set_map_filename("/levels/world1/worldmap.stwm");
 813   // Load the game or at least set the savegame_file variable
 814   worldmap.loadgame(slotfile);
 815
 816   worldmap.display();
 817
 818   Menu::set_current(main_menu);
 819
 820   return true;
 821 }