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