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 #ifndef WIN32
  39 #include <sys/types.h>
  40 #include <ctype.h>
  41 #endif
  42
  43 #include "game_session.h"
  44 #include "video/screen.h"
  45 #include "gui/menu.h"
  46 #include "sector.h"
  47 #include "level.h"
  48 #include "tile.h"
  49 #include "player_status.h"
  50 #include "object/particlesystem.h"
  51 #include "object/background.h"
  52 #include "object/tilemap.h"
  53 #include "object/camera.h"
  54 #include "object/player.h"
  55 #include "lisp/lisp.h"
  56 #include "lisp/parser.h"
  57 #include "resources.h"
  58 #include "worldmap.h"
  59 #include "misc.h"
  60 #include "statistics.h"
  61 #include "timer.h"
  62 #include "object/fireworks.h"
  63 #include "textscroller.h"
  64 #include "control/codecontroller.h"
  65 #include "control/joystickkeyboardcontroller.h"
  66 #include "main.h"
  67 #include "file_system.h"
  68 #include "gameconfig.h"
  69 #include "gettext.h"
  70
  71 // the engine will be run with a lofical framerate of 64fps.
  72 // We choose 64fps here because it is a power of 2, so 1/64 gives an "even"
  73 // binary fraction...
  74 static const float LOGICAL_FPS = 64.0;
  75
  76 GameSession* GameSession::current_ = 0;
  77
  78 GameSession::GameSession(const std::string& levelfile_, GameSessionMode mode,
  79     Statistics* statistics)
  80   : level(0), currentsector(0), mode(mode),
  81     end_sequence(NO_ENDSEQUENCE), end_sequence_controller(0),
  82     levelfile(levelfile_), best_level_statistics(statistics),
  83     capture_demo_stream(0), playback_demo_stream(0), demo_controller(0)
  84 {
  85   current_ = this;
  86
  87   game_pause = false;
  88   fps_fps = 0;
  89
  90   context = new DrawingContext();
  91
  92   restart_level();
  93 }
  94
  95 void
  96 GameSession::restart_level()
  97 {
  98   game_pause   = false;
  99   exit_status  = ES_NONE;
 100   end_sequence = NO_ENDSEQUENCE;
 101
 102   main_controller->reset();
 103
 104   delete level;
 105   currentsector = 0;
 106
 107   level = new Level;
 108   level->load(levelfile);
 109
 110   global_stats.reset();
 111   global_stats.set_total_points(COINS_COLLECTED_STAT, level->get_total_coins());
 112   global_stats.set_total_points(BADGUYS_KILLED_STAT, level->get_total_badguys());
 113   //global_stats.set_total_points(TIME_NEEDED_STAT, level->timelimit);
 114
 115   if(reset_sector != "") {
 116     currentsector = level->get_sector(reset_sector);
 117     if(!currentsector) {
 118       std::stringstream msg;
 119       msg << "Couldn't find sector '" << reset_sector << "' for resetting tux.";
 120       throw std::runtime_error(msg.str());
 121     }
 122     currentsector->activate(reset_pos);
 123   } else {
 124     currentsector = level->get_sector("main");
 125     if(!currentsector)
 126       throw std::runtime_error("Couldn't find main sector");
 127     currentsector->activate("main");
 128   }
 129
 130   if(mode == ST_GL_PLAY || mode == ST_GL_LOAD_LEVEL_FILE)
 131     levelintro();
 132
 133   currentsector->play_music(LEVEL_MUSIC);
 134
 135   if(capture_file != "")
 136     record_demo(capture_file);
 137 }
 138
 139 GameSession::~GameSession()
 140 {
 141   delete capture_demo_stream;
 142   delete playback_demo_stream;
 143   delete demo_controller;
 144
 145   delete end_sequence_controller;
 146   delete level;
 147   delete context;
 148 }
 149
 150 void
 151 GameSession::record_demo(const std::string& filename)
 152 {
 153   delete capture_demo_stream;
 154
 155   capture_demo_stream = new std::ofstream(filename.c_str());
 156   if(!capture_demo_stream->good()) {
 157     std::stringstream msg;
 158     msg << "Couldn't open demo file '" << filename << "' for writing.";
 159     throw std::runtime_error(msg.str());
 160   }
 161   capture_file = filename;
 162 }
 163
 164 void
 165 GameSession::play_demo(const std::string& filename)
 166 {
 167   delete playback_demo_stream;
 168   delete demo_controller;
 169
 170   playback_demo_stream = new std::ifstream(filename.c_str());
 171   if(!playback_demo_stream->good()) {
 172     std::stringstream msg;
 173     msg << "Couldn't open demo file '" << filename << "' for reading.";
 174     throw std::runtime_error(msg.str());
 175   }
 176
 177   Player& tux = *currentsector->player;
 178   demo_controller = new CodeController();
 179   tux.set_controller(demo_controller);
 180 }
 181
 182 void
 183 GameSession::levelintro()
 184 {
 185   sound_manager->halt_music();
 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
 429 void
 430 GameSession::draw()
 431 {
 432   currentsector->draw(*context);
 433   drawstatus(*context);
 434
 435   if(game_pause)
 436     draw_pause();
 437
 438   if(Menu::current()) {
 439     Menu::current()->draw(*context);
 440   }
 441
 442   context->do_drawing();
 443 }
 444
 445 void
 446 GameSession::draw_pause()
 447 {
 448   int x = SCREEN_HEIGHT / 20;
 449   for(int i = 0; i < x; ++i) {
 450     context->draw_filled_rect(
 451         Vector(i % 2 ? (pause_menu_frame * i)%SCREEN_WIDTH :
 452           -((pause_menu_frame * i)%SCREEN_WIDTH)
 453           ,(i*20+pause_menu_frame)%SCREEN_HEIGHT),
 454         Vector(SCREEN_WIDTH,10),
 455         Color(20,20,20, rand() % 20 + 1), LAYER_FOREGROUND1+1);
 456   }
 457
 458   context->draw_filled_rect(
 459       Vector(0,0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
 460       Color(rand() % 50, rand() % 50, rand() % 50, 128), LAYER_FOREGROUND1);
 461 #if 0
 462   context->draw_text(blue_text, _("PAUSE - Press 'P' To Play"),
 463       Vector(SCREEN_WIDTH/2, 230), CENTER_ALLIGN, LAYER_FOREGROUND1+2);
 464
 465   const char* str1 = _("Playing: ");
 466   const char* str2 = level->get_name().c_str();
 467
 468   context->draw_text(blue_text, str1,
 469       Vector((SCREEN_WIDTH - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2, 340),
 470       LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 471   context->draw_text(white_text, str2,
 472       Vector(((SCREEN_WIDTH - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2)+blue_text->get_text_width(str1), 340),
 473       LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 474 #endif
 475 }
 476
 477 void
 478 GameSession::process_menu()
 479 {
 480   Menu* menu = Menu::current();
 481   if(menu) {
 482     menu->update();
 483
 484     if(menu == game_menu) {
 485       switch (game_menu->check()) {
 486         case MNID_CONTINUE:
 487           Menu::set_current(0);
 488           break;
 489         case MNID_ABORTLEVEL:
 490           Menu::set_current(0);
 491           exit_status = ES_LEVEL_ABORT;
 492           break;
 493       }
 494     } else if(menu == options_menu) {
 495       process_options_menu();
 496     } else if(menu == load_game_menu ) {
 497       process_load_game_menu();
 498     }
 499   }
 500 }
 501
 502
 503 GameSession::ExitStatus
 504 GameSession::run()
 505 {
 506   Menu::set_current(0);
 507   current_ = this;
 508
 509   int fps_cnt = 0;
 510
 511   // Eat unneeded events
 512   SDL_Event event;
 513   while(SDL_PollEvent(&event))
 514   {}
 515
 516   draw();
 517
 518   Uint32 fps_ticks = SDL_GetTicks();
 519   Uint32 fps_nextframe_ticks = SDL_GetTicks();
 520   Uint32 ticks;
 521   bool skipdraw = false;
 522
 523   while (exit_status == ES_NONE) {
 524     // we run in a logical framerate so elapsed time is a constant
 525     static const float elapsed_time = 1.0 / LOGICAL_FPS;
 526     // old code... float elapsed_time = float(ticks - lastticks) / 1000.;
 527     if(!game_pause)
 528       global_time += elapsed_time;
 529
 530     // regulate fps
 531     ticks = SDL_GetTicks();
 532     if(ticks > fps_nextframe_ticks) {
 533       if(skipdraw == true) {
 534         // already skipped last frame? we have to slow down the game then...
 535         skipdraw = false;
 536         fps_nextframe_ticks -= (Uint32) (1000.0 / LOGICAL_FPS);
 537       } else {
 538         // don't draw all frames when we're getting too slow
 539         skipdraw = true;
 540       }
 541     } else {
 542       skipdraw = false;
 543       while(fps_nextframe_ticks > ticks) {
 544         /* just wait */
 545         // If we really have to wait long, then do an imprecise SDL_Delay()
 546         Uint32 diff = fps_nextframe_ticks - ticks;
 547         if(diff > 15) {
 548           SDL_Delay(diff - 10);
 549         }
 550         ticks = SDL_GetTicks();
 551       }
 552     }
 553     fps_nextframe_ticks = ticks + (Uint32) (1000.0 / LOGICAL_FPS);
 554
 555 #if 0
 556     float diff = SDL_GetTicks() - fps_nextframe_ticks;
 557     if (diff > 5.0) {
 558          // sets the ticks that must have elapsed
 559         fps_nextframe_ticks = SDL_GetTicks() + (1000.0 / LOGICAL_FPS);
 560     } else {
 561         // sets the ticks that must have elapsed
 562         // in order for the next frame to start.
 563         fps_nextframe_ticks += 1000.0 / LOGICAL_FPS;
 564     }
 565 #endif
 566
 567     process_events();
 568     process_menu();
 569
 570     // Update the world state and all objects in the world
 571     // Do that with a constante time-delta so that the game will run
 572     // determistic and not different on different machines
 573     if(!game_pause && !Menu::current())
 574     {
 575       // Update the world
 576       check_end_conditions();
 577       if (end_sequence == ENDSEQUENCE_RUNNING)
 578         update(elapsed_time/2);
 579       else if(end_sequence == NO_ENDSEQUENCE)
 580         update(elapsed_time);
 581     }
 582     else
 583     {
 584       ++pause_menu_frame;
 585     }
 586
 587     if(!skipdraw)
 588       draw();
 589
 590     /* Time stops in pause mode */
 591     if(game_pause || Menu::current())
 592     {
 593       continue;
 594     }
 595
 596     //frame_rate.update();
 597
 598     /* Handle music: */
 599     if (currentsector->player->invincible_timer.started() && !end_sequence)
 600     {
 601       currentsector->play_music(HERRING_MUSIC);
 602     }
 603     /* or just normal music? */
 604     else if(currentsector->get_music_type() != LEVEL_MUSIC && !end_sequence)
 605     {
 606       currentsector->play_music(LEVEL_MUSIC);
 607     }
 608
 609     /* Calculate frames per second */
 610     if(config->show_fps)
 611     {
 612       ++fps_cnt;
 613
 614       if(SDL_GetTicks() - fps_ticks >= 500)
 615       {
 616         fps_fps = (float) fps_cnt / .5;
 617         fps_cnt = 0;
 618         fps_ticks = SDL_GetTicks();
 619       }
 620     }
 621   }
 622
 623   // just in case
 624   currentsector = 0;
 625   main_controller->reset();
 626   return exit_status;
 627 }
 628
 629 void
 630 GameSession::finish(bool win)
 631 {
 632   if(win)
 633     exit_status = ES_LEVEL_FINISHED;
 634   else
 635     exit_status = ES_LEVEL_ABORT;
 636 }
 637
 638 void
 639 GameSession::respawn(const std::string& sector, const std::string& spawnpoint)
 640 {
 641   newsector = sector;
 642   newspawnpoint = spawnpoint;
 643 }
 644
 645 void
 646 GameSession::set_reset_point(const std::string& sector, const Vector& pos)
 647 {
 648   reset_sector = sector;
 649   reset_pos = pos;
 650 }
 651
 652 std::string
 653 GameSession::get_working_directory()
 654 {
 655   return FileSystem::dirname(levelfile);
 656 }
 657
 658 void
 659 GameSession::display_info_box(const std::string& text)
 660 {
 661   InfoBox* box = new InfoBox(text);
 662
 663   bool running = true;
 664   while(running)  {
 665
 666     main_controller->update();
 667     SDL_Event event;
 668     while (SDL_PollEvent(&event)) {
 669       main_controller->process_event(event);
 670       if(event.type == SDL_QUIT)
 671         throw std::runtime_error("Received window close event");
 672     }
 673
 674     if(main_controller->pressed(Controller::JUMP)
 675         || main_controller->pressed(Controller::ACTION)
 676         || main_controller->pressed(Controller::PAUSE_MENU)
 677         || main_controller->pressed(Controller::MENU_SELECT))
 678       running = false;
 679     box->draw(*context);
 680     draw();
 681   }
 682
 683   delete box;
 684 }
 685
 686 void
 687 GameSession::start_sequence(const std::string& sequencename)
 688 {
 689   if(sequencename == "endsequence" || sequencename == "fireworks") {
 690     if(end_sequence)
 691       return;
 692
 693     end_sequence = ENDSEQUENCE_RUNNING;
 694     endsequence_timer.start(7.0); // 7 seconds until we finish the map
 695     last_x_pos = -1;
 696     sound_manager->play_music(level_end_song, 0);
 697     currentsector->player->invincible_timer.start(7.0);
 698
 699     if(sequencename == "fireworks") {
 700       currentsector->add_object(new Fireworks());
 701     }
 702   } else if(sequencename == "stoptux") {
 703     end_sequence =  ENDSEQUENCE_WAITING;
 704   } else {
 705     std::cout << "Unknown sequence '" << sequencename << "'.\n";
 706   }
 707 }
 708
 709 /* (Status): */
 710 void
 711 GameSession::drawstatus(DrawingContext& context)
 712 {
 713   player_status.draw(context);
 714
 715   if(config->show_fps) {
 716     char str[60];
 717     snprintf(str, sizeof(str), "%2.1f", fps_fps);
 718     context.draw_text(white_text, "FPS",
 719                       Vector(SCREEN_WIDTH -
 720                              white_text->get_text_width("FPS     "), 40),
 721                       LEFT_ALLIGN, LAYER_FOREGROUND1);
 722     context.draw_text(gold_text, str,
 723                       Vector(SCREEN_WIDTH-4*16, 40),
 724                       LEFT_ALLIGN, LAYER_FOREGROUND1);
 725   }
 726 }
 727
 728 void
 729 GameSession::drawresultscreen()
 730 {
 731   char str[80];
 732
 733   DrawingContext context;
 734   for(Sector::GameObjects::iterator i = currentsector->gameobjects.begin();
 735       i != currentsector->gameobjects.end(); ++i) {
 736     Background* background = dynamic_cast<Background*> (*i);
 737     if(background) {
 738       background->draw(context);
 739     }
 740   }
 741
 742   context.draw_text(blue_text, _("Result:"), Vector(SCREEN_WIDTH/2, 200),
 743       CENTER_ALLIGN, LAYER_FOREGROUND1);
 744
 745   sprintf(str, _("SCORE: %d"), global_stats.get_points(SCORE_STAT));
 746   context.draw_text(gold_text, str, Vector(SCREEN_WIDTH/2, 224), CENTER_ALLIGN, LAYER_FOREGROUND1);
 747
 748   sprintf(str, _("COINS: %d"), player_status.coins);
 749   context.draw_text(gold_text, str, Vector(SCREEN_WIDTH/2, 256), CENTER_ALLIGN, LAYER_FOREGROUND1);
 750
 751   context.do_drawing();
 752
 753   wait_for_event(2.0, 5.0);
 754 }
 755
 756 std::string slotinfo(int slot)
 757 {
 758   std::string tmp;
 759   std::string slotfile;
 760   std::string title;
 761   std::stringstream stream;
 762   stream << slot;
 763   slotfile = user_dir + "/save/slot" + stream.str() + ".stsg";
 764
 765   try {
 766     lisp::Parser parser;
 767     std::auto_ptr<lisp::Lisp> root (parser.parse(slotfile));
 768
 769     const lisp::Lisp* savegame = root->get_lisp("supertux-savegame");
 770     if(!savegame)
 771       throw std::runtime_error("file is not a supertux-savegame.");
 772
 773     savegame->get("title", title);
 774   } catch(std::exception& e) {
 775     return std::string(_("Slot")) + " " + stream.str() + " - " +
 776       std::string(_("Free"));
 777   }
 778
 779   return std::string("Slot ") + stream.str() + " - " + title;
 780 }
 781
 782 bool process_load_game_menu()
 783 {
 784   int slot = load_game_menu->check();
 785
 786   if(slot == -1)
 787     return false;
 788
 789   if(load_game_menu->get_item_by_id(slot).kind != MN_ACTION)
 790     return false;
 791
 792   std::stringstream stream;
 793   stream << slot;
 794   std::string slotfile = user_dir + "/save/slot" + stream.str() + ".stsg";
 795
 796   fadeout(256);
 797   DrawingContext context;
 798   context.draw_text(white_text, "Loading...",
 799                     Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT/2),
 800                     CENTER_ALLIGN, LAYER_FOREGROUND1);
 801   context.do_drawing();
 802
 803   WorldMapNS::WorldMap worldmap;
 804
 805   worldmap.set_map_filename("/levels/world1/worldmap.stwm");
 806   // Load the game or at least set the savegame_file variable
 807   worldmap.loadgame(slotfile);
 808
 809   worldmap.display();
 810
 811   Menu::set_current(main_menu);
 812
 813   return true;
 814 }