src/gameloop.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
  22 #include <config.h>
  23
  24 #include <iostream>
  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
  35 #include "SDL.h"
  36
  37 #ifndef WIN32
  38 #include <sys/types.h>
  39 #include <ctype.h>
  40 #endif
  41
  42 #include "defines.h"
  43 #include "app/globals.h"
  44 #include "gameloop.h"
  45 #include "video/screen.h"
  46 #include "app/setup.h"
  47 #include "high_scores.h"
  48 #include "gui/menu.h"
  49 #include "sector.h"
  50 #include "player.h"
  51 #include "level.h"
  52 #include "scene.h"
  53 #include "collision.h"
  54 #include "tile.h"
  55 #include "particlesystem.h"
  56 #include "resources.h"
  57 #include "background.h"
  58 #include "tilemap.h"
  59 #include "app/gettext.h"
  60 #include "worldmap.h"
  61 #include "intro.h"
  62 #include "misc.h"
  63 #include "camera.h"
  64 #include "statistics.h"
  65 #include "timer.h"
  66 #include "object/fireworks.h"
  67
  68 GameSession* GameSession::current_ = 0;
  69
  70 bool compare_last(std::string& haystack, std::string needle)
  71 {
  72   int haystack_size = haystack.size();
  73   int needle_size = needle.size();
  74
  75   if(haystack_size < needle_size)
  76     return false;
  77
  78   if(haystack.compare(haystack_size-needle_size, needle_size, needle) == 0)
  79     return true;
  80   return false;
  81 }
  82
  83 GameSession::GameSession(const std::string& levelname_, int mode,
  84     bool flip_level_, Statistics* statistics)
  85   : level(0), currentsector(0), st_gl_mode(mode),
  86     end_sequence(NO_ENDSEQUENCE), levelname(levelname_), flip_level(flip_level_),
  87     best_level_statistics(statistics)
  88 {
  89   current_ = this;
  90
  91   game_pause = false;
  92   fps_fps = 0;
  93
  94   context = new DrawingContext();
  95
  96   if(flip_levels_mode)
  97     flip_level = true;
  98
  99   last_swap_point = Vector(-1, -1);
 100   last_swap_stats.reset();
 101
 102   restart_level();
 103 }
 104
 105 void
 106 GameSession::restart_level()
 107 {
 108   game_pause   = false;
 109   exit_status  = ES_NONE;
 110   end_sequence = NO_ENDSEQUENCE;
 111
 112   last_keys.clear();
 113
 114 #if 0
 115   Vector tux_pos = Vector(-1,-1);
 116   if (currentsector)
 117     {
 118       // Tux has lost a life, so we try to respawn him at the nearest reset point
 119       tux_pos = currentsector->player->base;
 120     }
 121 #endif
 122
 123   delete level;
 124   currentsector = 0;
 125
 126   level = new Level;
 127   level->load(levelname);
 128   if(flip_level)
 129     level->do_vertical_flip();
 130
 131   global_stats.reset();
 132   global_stats.set_total_points(COINS_COLLECTED_STAT, level->get_total_coins());
 133   global_stats.set_total_points(BADGUYS_KILLED_STAT, level->get_total_badguys());
 134   global_stats.set_total_points(TIME_NEEDED_STAT, level->timelimit);
 135
 136   currentsector = level->get_sector("main");
 137   if(!currentsector)
 138     Termination::abort("Level has no main sector.", "");
 139   currentsector->activate("main");
 140
 141 #if 0
 142   // Set Tux to the nearest reset point
 143   if(tux_pos.x != -1)
 144     {
 145     tux_pos = currentsector->get_best_spawn_point(tux_pos);
 146
 147     if(last_swap_point.x > tux_pos.x)
 148       tux_pos = last_swap_point;
 149     else  // new swap point
 150       {
 151       last_swap_point = tux_pos;
 152
 153       last_swap_stats += global_stats;
 154       }
 155
 156     currentsector->player->base.x = tux_pos.x;
 157     currentsector->player->base.y = tux_pos.y;
 158
 159     // has to reset camera on swapping
 160     currentsector->camera->reset(Vector(currentsector->player->base.x,
 161                                         currentsector->player->base.y));
 162     }
 163 #endif
 164
 165   if (st_gl_mode != ST_GL_DEMO_GAME)
 166     {
 167       if(st_gl_mode == ST_GL_PLAY || st_gl_mode == ST_GL_LOAD_LEVEL_FILE)
 168         levelintro();
 169     }
 170
 171   start_timers();
 172   currentsector->play_music(LEVEL_MUSIC);
 173 }
 174
 175 GameSession::~GameSession()
 176 {
 177   delete level;
 178   delete context;
 179 }
 180
 181 void
 182 GameSession::levelintro(void)
 183 {
 184   SoundManager::get()->halt_music();
 185
 186   char str[60];
 187
 188   DrawingContext context;
 189   if(currentsector->background)
 190     currentsector->background->draw(context);
 191
 192 //  context.draw_text(gold_text, level->get_name(), Vector(screen->w/2, 160),
 193 //      CENTER_ALLIGN, LAYER_FOREGROUND1);
 194   context.draw_center_text(gold_text, level->get_name(), Vector(0, 160),
 195       LAYER_FOREGROUND1);
 196
 197   sprintf(str, "TUX x %d", player_status.lives);
 198   context.draw_text(white_text, str, Vector(screen->w/2, 210),
 199       CENTER_ALLIGN, LAYER_FOREGROUND1);
 200
 201   if((level->get_author().size()) && (level->get_author() != "SuperTux Team"))
 202     //TODO make author check case/blank-insensitive
 203     context.draw_text(white_small_text,
 204       std::string(_("contributed by ")) + level->get_author(),
 205       Vector(screen->w/2, 350), CENTER_ALLIGN, LAYER_FOREGROUND1);
 206
 207
 208   if(flip_level)
 209     context.draw_text(white_text,
 210       _("Level Vertically Flipped!"),
 211       Vector(screen->w/2, 310), CENTER_ALLIGN, LAYER_FOREGROUND1);
 212
 213   if(best_level_statistics != NULL)
 214     best_level_statistics->draw_message_info(context, _("Best Level Statistics"));
 215
 216   context.do_drawing();
 217
 218   SDL_Event event;
 219   wait_for_event(event,1000,3000,true);
 220 }
 221
 222 /* Reset Timers */
 223 void
 224 GameSession::start_timers()
 225 {
 226   time_left.start(level->timelimit);
 227   Ticks::pause_init();
 228 }
 229
 230 void
 231 GameSession::on_escape_press()
 232 {
 233   if(currentsector->player->dying || end_sequence != NO_ENDSEQUENCE)
 234     return;   // don't let the player open the menu, when he is dying
 235
 236   if(game_pause)
 237     return;
 238
 239   if(st_gl_mode == ST_GL_TEST)
 240     {
 241       exit_status = ES_LEVEL_ABORT;
 242     }
 243   else if (!Menu::current())
 244     {
 245       /* Tell Tux that the keys are all down, otherwise
 246         it could have nasty bugs, like going allways to the right
 247         or whatever that key does */
 248       Player& tux = *(currentsector->player);
 249       tux.key_event((SDLKey)keymap.up, UP);
 250       tux.key_event((SDLKey)keymap.down, UP);
 251       tux.key_event((SDLKey)keymap.left, UP);
 252       tux.key_event((SDLKey)keymap.right, UP);
 253       tux.key_event((SDLKey)keymap.jump, UP);
 254       tux.key_event((SDLKey)keymap.power, UP);
 255
 256       Menu::set_current(game_menu);
 257       Ticks::pause_start();
 258     }
 259 }
 260
 261 void
 262 GameSession::process_events()
 263 {
 264   if (end_sequence != NO_ENDSEQUENCE)
 265     {
 266       Player& tux = *currentsector->player;
 267
 268       tux.input.fire  = UP;
 269       tux.input.left  = UP;
 270       tux.input.right = DOWN;
 271       tux.input.down  = UP;
 272
 273       if (int(last_x_pos) == int(tux.get_pos().x))
 274         tux.input.up    = DOWN;
 275       else
 276         tux.input.up    = UP;
 277
 278       last_x_pos = tux.get_pos().x;
 279
 280       SDL_Event event;
 281       while (SDL_PollEvent(&event))
 282         {
 283           /* Check for menu-events, if the menu is shown */
 284           if (Menu::current())
 285             {
 286               Menu::current()->event(event);
 287               if(!Menu::current())
 288               Ticks::pause_stop();
 289             }
 290
 291           switch(event.type)
 292             {
 293             case SDL_QUIT:        /* Quit event - quit: */
 294               Termination::abort("Received window close", "");
 295               break;
 296
 297             case SDL_KEYDOWN:     /* A keypress! */
 298               {
 299                 SDLKey key = event.key.keysym.sym;
 300
 301                 switch(key)
 302                   {
 303                   case SDLK_ESCAPE:    /* Escape: Open/Close the menu: */
 304                     on_escape_press();
 305                     break;
 306                   default:
 307                     break;
 308                   }
 309               }
 310
 311             case SDL_JOYBUTTONDOWN:
 312               if (event.jbutton.button == joystick_keymap.start_button)
 313                 on_escape_press();
 314               break;
 315             }
 316         }
 317     }
 318   else // normal mode
 319     {
 320       if(!Menu::current() && !game_pause)
 321         Ticks::pause_stop();
 322
 323       SDL_Event event;
 324       while (SDL_PollEvent(&event))
 325         {
 326           /* Check for menu-events, if the menu is shown */
 327           if (Menu::current())
 328             {
 329               Menu::current()->event(event);
 330               if(!Menu::current())
 331                 Ticks::pause_stop();
 332             }
 333           else
 334             {
 335               Player& tux = *currentsector->player;
 336
 337               switch(event.type)
 338                 {
 339                 case SDL_QUIT:        /* Quit event - quit: */
 340                   Termination::abort("Received window close", "");
 341                   break;
 342
 343                 case SDL_KEYDOWN:     /* A keypress! */
 344                   {
 345                     SDLKey key = event.key.keysym.sym;
 346
 347                     if(tux.key_event(key,DOWN))
 348                       break;
 349
 350                     switch(key)
 351                       {
 352                       case SDLK_ESCAPE:    /* Escape: Open/Close the menu: */
 353                         on_escape_press();
 354                         break;
 355                       default:
 356                         break;
 357                       }
 358                   }
 359                   break;
 360                 case SDL_KEYUP:      /* A keyrelease! */
 361                   {
 362                     SDLKey key = event.key.keysym.sym;
 363
 364                     if(tux.key_event(key, UP))
 365                       break;
 366
 367                     switch(key)
 368                       {
 369                       case SDLK_a:
 370                         if(debug_mode)
 371                         {
 372                           char buf[160];
 373                           snprintf(buf, sizeof(buf), "P: %4.1f,%4.1f",
 374                               tux.get_pos().x, tux.get_pos().y);
 375                           context->draw_text(white_text, buf,
 376                               Vector(0, screen->h - white_text->get_height()),
 377                               LEFT_ALLIGN, LAYER_FOREGROUND1);
 378                           context->do_drawing();
 379                           SDL_Delay(1000);
 380                         }
 381                         break;
 382                       case SDLK_p:
 383                         if(!Menu::current())
 384                           {
 385                           // "lifeup" cheat activates pause cause of the 'p'
 386                           // so work around to ignore it
 387                             if(compare_last(last_keys, "lifeu"))
 388                               break;
 389
 390                             if(game_pause)
 391                               {
 392                                 game_pause = false;
 393                                 Ticks::pause_stop();
 394                               }
 395                             else
 396                               {
 397                                 game_pause = true;
 398                                 Ticks::pause_start();
 399                               }
 400                           }
 401                         break;
 402                       default:
 403                         break;
 404                       }
 405                   }
 406
 407                         /* Check if chacrater is ASCII */
 408                         char ch[2];
 409                         if((event.key.keysym.unicode & 0xFF80) == 0)
 410                           {
 411                           ch[0] = event.key.keysym.unicode & 0x7F;
 412                           ch[1] = '\0';
 413                           }
 414                         last_keys.append(ch);  // add to cheat keys
 415
 416                         // Cheating words (the goal of this is really for debugging,
 417                         // but could be used for some cheating, nothing wrong with that)
 418                         if(compare_last(last_keys, "grow"))
 419                           {
 420                           tux.grow(false);
 421                           last_keys.clear();
 422                           }
 423                         if(compare_last(last_keys, "fire"))
 424                           {
 425                           tux.grow(false);
 426                           tux.got_power = tux.FIRE_POWER;
 427                           last_keys.clear();
 428                           }
 429                         if(compare_last(last_keys, "ice"))
 430                           {
 431                           tux.grow(false);
 432                           tux.got_power = tux.ICE_POWER;
 433                           last_keys.clear();
 434                           }
 435                         if(compare_last(last_keys, "lifeup"))
 436                           {
 437                           player_status.lives++;
 438                           last_keys.clear();
 439                           }
 440                         if(compare_last(last_keys, "lifedown"))
 441                           {
 442                           player_status.lives--;
 443                           last_keys.clear();
 444                           }
 445                         if(compare_last(last_keys, "grease"))
 446                           {
 447                           tux.physic.set_velocity_x(tux.physic.get_velocity_x()*3);
 448                           last_keys.clear();
 449                           }
 450                         if(compare_last(last_keys, "invincible"))
 451                           {    // be invincle for the rest of the level
 452                           tux.invincible_timer.start(10000);
 453                           last_keys.clear();
 454                           }
 455                         if(compare_last(last_keys, "shrink"))
 456                           {    // remove powerups
 457                           tux.kill(tux.SHRINK);
 458                           last_keys.clear();
 459                           }
 460                         if(compare_last(last_keys, "kill"))
 461                           {    // kill Tux, but without losing a life
 462                           player_status.lives++;
 463                           tux.kill(tux.KILL);
 464                           last_keys.clear();
 465                           }
 466                         if(compare_last(last_keys, "hover"))
 467                           {    // toggle hover ability on/off
 468                           tux.enable_hover = !tux.enable_hover;
 469                           last_keys.clear();
 470                           }
 471                         if(compare_last(last_keys, "gotoend"))
 472                           {    // goes to the end of the level
 473                           tux.move(Vector(
 474                               (currentsector->solids->get_width()*32)
 475                                 - (screen->w*2),
 476                                 0));
 477                           currentsector->camera->reset(
 478                               Vector(tux.get_pos().x, tux.get_pos().y));
 479                           last_keys.clear();
 480                           }
 481                         // temporary to help player's choosing a flapping
 482                         if(compare_last(last_keys, "marek"))
 483                           {
 484                           tux.flapping_mode = Player::MAREK_FLAP;
 485                           last_keys.clear();
 486                           }
 487                         if(compare_last(last_keys, "ricardo"))
 488                           {
 489                           tux.flapping_mode = Player::RICARDO_FLAP;
 490                           last_keys.clear();
 491                           }
 492                         if(compare_last(last_keys, "ryan"))
 493                           {
 494                           tux.flapping_mode = Player::RYAN_FLAP;
 495                           last_keys.clear();
 496                           }
 497                   break;
 498
 499                 case SDL_JOYAXISMOTION:
 500                   if (event.jaxis.axis == joystick_keymap.x_axis)
 501                     {
 502                       if (event.jaxis.value < -joystick_keymap.dead_zone)
 503                         {
 504                           tux.input.left  = DOWN;
 505                           tux.input.right = UP;
 506                         }
 507                       else if (event.jaxis.value > joystick_keymap.dead_zone)
 508                         {
 509                           tux.input.left  = UP;
 510                           tux.input.right = DOWN;
 511                         }
 512                       else
 513                         {
 514                           tux.input.left  = DOWN;
 515                           tux.input.right = DOWN;
 516                         }
 517                     }
 518                   else if (event.jaxis.axis == joystick_keymap.y_axis)
 519                     {
 520                       if (event.jaxis.value > joystick_keymap.dead_zone)
 521                         {
 522                         tux.input.up = DOWN;
 523                         tux.input.down = UP;
 524                         }
 525                       else if (event.jaxis.value < -joystick_keymap.dead_zone)
 526                         {
 527                         tux.input.up = UP;
 528                         tux.input.down = DOWN;
 529                         }
 530                       else
 531                         {
 532                         tux.input.up = DOWN;
 533                         tux.input.down = DOWN;
 534                         }
 535                     }
 536                   break;
 537
 538                 case SDL_JOYHATMOTION:
 539                   if(event.jhat.value & SDL_HAT_UP) {
 540                     tux.input.up = DOWN;
 541                     tux.input.down = UP;
 542                   } else if(event.jhat.value & SDL_HAT_DOWN) {
 543                     tux.input.up = UP;
 544                     tux.input.down = DOWN;
 545                   } else if(event.jhat.value & SDL_HAT_LEFT) {
 546                     tux.input.left = DOWN;
 547                     tux.input.right = UP;
 548                   } else if(event.jhat.value & SDL_HAT_RIGHT) {
 549                     tux.input.left = UP;
 550                     tux.input.right = DOWN;
 551                   } else if(event.jhat.value == SDL_HAT_CENTERED) {
 552                     tux.input.left = UP;
 553                     tux.input.right = UP;
 554                     tux.input.up = UP;
 555                     tux.input.down = UP;
 556                   }
 557                   break;
 558
 559                 case SDL_JOYBUTTONDOWN:
 560                   if (event.jbutton.button == joystick_keymap.a_button)
 561                     tux.input.jump = DOWN;
 562                   else if (event.jbutton.button == joystick_keymap.b_button)
 563                     tux.input.fire = DOWN;
 564                   else if (event.jbutton.button == joystick_keymap.start_button)
 565                     on_escape_press();
 566                   break;
 567                 case SDL_JOYBUTTONUP:
 568                   if (event.jbutton.button == joystick_keymap.a_button)
 569                     tux.input.jump = UP;
 570                   else if (event.jbutton.button == joystick_keymap.b_button)
 571                     tux.input.fire = UP;
 572                   break;
 573
 574                 default:
 575                   break;
 576                 }  /* switch */
 577             }
 578         } /* while */
 579     }
 580 }
 581
 582 void
 583 GameSession::check_end_conditions()
 584 {
 585   Player* tux = currentsector->player;
 586
 587   /* End of level? */
 588   if(end_sequence && endsequence_timer.check()) {
 589       exit_status = ES_LEVEL_FINISHED;
 590       global_stats += last_swap_stats;  // add swap points stats
 591       return;
 592   } else if (!end_sequence && tux->is_dead()) {
 593     player_status.bonus = PlayerStatus::NO_BONUS;
 594
 595     if (player_status.lives < 0) { // No more lives!?
 596       exit_status = ES_GAME_OVER;
 597     } else { // Still has lives, so reset Tux to the levelstart
 598       restart_level();
 599     }
 600
 601     return;
 602   }
 603 }
 604
 605 void
 606 GameSession::action(float elapsed_time)
 607 {
 608   // advance timers
 609   if (exit_status == ES_NONE && !currentsector->player->growing_timer.check())
 610     {
 611       // Update Tux and the World
 612       currentsector->action(elapsed_time);
 613     }
 614
 615   // respawning in new sector?
 616   if(newsector != "" && newspawnpoint != "") {
 617     Sector* sector = level->get_sector(newsector);
 618     currentsector = sector;
 619     currentsector->activate(newspawnpoint);
 620     currentsector->play_music(LEVEL_MUSIC);
 621     newsector = newspawnpoint = "";
 622   }
 623 }
 624
 625 void
 626 GameSession::draw()
 627 {
 628   currentsector->draw(*context);
 629   drawstatus(*context);
 630
 631   if(game_pause)
 632     {
 633       int x = screen->h / 20;
 634       for(int i = 0; i < x; ++i)
 635         {
 636           context->draw_filled_rect(
 637               Vector(i % 2 ? (pause_menu_frame * i)%screen->w :
 638                 -((pause_menu_frame * i)%screen->w)
 639                 ,(i*20+pause_menu_frame)%screen->h),
 640               Vector(screen->w,10),
 641               Color(20,20,20, rand() % 20 + 1), LAYER_FOREGROUND1+1);
 642         }
 643       context->draw_filled_rect(
 644           Vector(0,0), Vector(screen->w, screen->h),
 645           Color(rand() % 50, rand() % 50, rand() % 50, 128), LAYER_FOREGROUND1);
 646       context->draw_text(blue_text, _("PAUSE - Press 'P' To Play"),
 647           Vector(screen->w/2, 230), CENTER_ALLIGN, LAYER_FOREGROUND1+2);
 648
 649       char str1[60];
 650       char str2[124];
 651       sprintf(str1, _("Playing: "));
 652       sprintf(str2, level->name.c_str());
 653
 654       context->draw_text(blue_text, str1,
 655           Vector((screen->w - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2, 340),
 656           LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 657       context->draw_text(white_text, str2,
 658           Vector(((screen->w - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2)+blue_text->get_text_width(str1), 340),
 659           LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 660     }
 661
 662   if(Menu::current())
 663     {
 664       Menu::current()->draw(*context);
 665       mouse_cursor->draw(*context);
 666     }
 667
 668   context->do_drawing();
 669 }
 670
 671 void
 672 GameSession::process_menu()
 673 {
 674   Menu* menu = Menu::current();
 675   if(menu)
 676     {
 677       menu->action();
 678
 679       if(menu == game_menu)
 680         {
 681           switch (game_menu->check())
 682             {
 683             case MNID_CONTINUE:
 684               Ticks::pause_stop();
 685               break;
 686             case MNID_ABORTLEVEL:
 687               Ticks::pause_stop();
 688               exit_status = ES_LEVEL_ABORT;
 689               break;
 690             }
 691         }
 692       else if(menu == options_menu)
 693         {
 694           process_options_menu();
 695         }
 696       else if(menu == load_game_menu )
 697         {
 698           process_load_game_menu();
 699         }
 700     }
 701 }
 702
 703 GameSession::ExitStatus
 704 GameSession::run()
 705 {
 706   Menu::set_current(0);
 707   current_ = this;
 708
 709   int fps_cnt = 0;
 710
 711   // Eat unneeded events
 712   SDL_Event event;
 713   while(SDL_PollEvent(&event))
 714   {}
 715
 716   draw();
 717
 718   Uint32 lastticks = SDL_GetTicks();
 719   fps_ticks = SDL_GetTicks();
 720
 721   while (exit_status == ES_NONE) {
 722     Uint32 ticks = SDL_GetTicks();
 723     float elapsed_time = float(ticks - lastticks) / 1000.;
 724     global_time += elapsed_time;
 725     lastticks = ticks;
 726
 727     // 40fps is minimum
 728     if(elapsed_time > .025)
 729       elapsed_time = .025;
 730
 731     /* Handle events: */
 732     currentsector->player->input.old_fire = currentsector->player->input.fire;
 733     currentsector->player->input.old_up = currentsector->player->input.old_up;
 734
 735     process_events();
 736     process_menu();
 737
 738     // Update the world state and all objects in the world
 739     // Do that with a constante time-delta so that the game will run
 740     // determistic and not different on different machines
 741     if(!game_pause && !Menu::current())
 742     {
 743       // Update the world
 744       check_end_conditions();
 745       if (end_sequence == ENDSEQUENCE_RUNNING)
 746         action(elapsed_time/2);
 747       else if(end_sequence == NO_ENDSEQUENCE)
 748         action(elapsed_time);
 749     }
 750     else
 751     {
 752       ++pause_menu_frame;
 753       SDL_Delay(50);
 754     }
 755
 756     draw();
 757
 758     /* Time stops in pause mode */
 759     if(game_pause || Menu::current())
 760     {
 761       continue;
 762     }
 763
 764     //frame_rate.update();
 765
 766     /* Handle time: */
 767     if (time_left.check() && currentsector->player->dying == DYING_NOT
 768         && !end_sequence)
 769       currentsector->player->kill(Player::KILL);
 770
 771     /* Handle music: */
 772     if(currentsector->player->invincible_timer.check() && !end_sequence)
 773     {
 774       currentsector->play_music(HERRING_MUSIC);
 775     }
 776     /* are we low on time ? */
 777     else if (time_left.get_timeleft() < TIME_WARNING && !end_sequence)
 778     {
 779       currentsector->play_music(HURRYUP_MUSIC);
 780     }
 781     /* or just normal music? */
 782     else if(currentsector->get_music_type() != LEVEL_MUSIC && !end_sequence)
 783     {
 784       currentsector->play_music(LEVEL_MUSIC);
 785     }
 786
 787     /* Calculate frames per second */
 788     if(show_fps)
 789     {
 790       ++fps_cnt;
 791
 792       if(SDL_GetTicks() - fps_ticks >= 500)
 793       {
 794         fps_fps = (float) fps_cnt / .5;
 795         fps_cnt = 0;
 796         fps_ticks = SDL_GetTicks();
 797       }
 798     }
 799   }
 800
 801   return exit_status;
 802 }
 803
 804 void
 805 GameSession::respawn(const std::string& sector, const std::string& spawnpoint)
 806 {
 807   newsector = sector;
 808   newspawnpoint = spawnpoint;
 809 }
 810
 811 void
 812 GameSession::start_sequence(const std::string& sequencename)
 813 {
 814   if(sequencename == "endsequence") {
 815     if(end_sequence)
 816       return;
 817
 818     end_sequence = ENDSEQUENCE_RUNNING;
 819     endsequence_timer.start(7.0); // 7 seconds until we finish the map
 820     last_x_pos = -1;
 821     SoundManager::get()->play_music(level_end_song, 0);
 822     currentsector->player->invincible_timer.start(7.0);
 823
 824     // add left time to stats
 825     global_stats.set_points(TIME_NEEDED_STAT,
 826         int(time_left.get_period() - time_left.get_timeleft()));
 827
 828     if(level->get_end_sequence_type() == Level::FIREWORKS_ENDSEQ_ANIM) {
 829       currentsector->add_object(new Fireworks());
 830     }
 831   } else {
 832     std::cout << "Unknown sequence '" << sequencename << "'.\n";
 833   }
 834 }
 835
 836 /* (Status): */
 837 void
 838 GameSession::drawstatus(DrawingContext& context)
 839 {
 840   char str[60];
 841
 842   snprintf(str, 60, " %d", global_stats.get_points(SCORE_STAT));
 843   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
 844   context.draw_text(gold_text, str, Vector(96, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
 845
 846   if(st_gl_mode == ST_GL_TEST)
 847     {
 848       context.draw_text(white_text, _("Press ESC To Return"), Vector(0,20),
 849           LEFT_ALLIGN, LAYER_FOREGROUND1);
 850     }
 851
 852   if(time_left.check()) {
 853     context.draw_text(white_text, _("TIME's UP"), Vector(screen->w/2, 0),
 854         CENTER_ALLIGN, LAYER_FOREGROUND1);
 855   } else if (time_left.get_timeleft() > TIME_WARNING
 856       || int(global_time * 2.5) % 2) {
 857     sprintf(str, " %d", int(time_left.get_timeleft()));
 858     context.draw_text(white_text, _("TIME"),
 859         Vector(screen->w/2, 0), CENTER_ALLIGN, LAYER_FOREGROUND1);
 860     context.draw_text(gold_text, str,
 861         Vector(screen->w/2 + 4*16, 0), CENTER_ALLIGN, LAYER_FOREGROUND1);
 862   }
 863
 864   sprintf(str, " %d", player_status.distros);
 865   context.draw_text(white_text, _("COINS"),
 866       Vector(screen->w - white_text->get_text_width(_("COINS"))-white_text->get_text_width("   99"), 0),
 867         LEFT_ALLIGN, LAYER_FOREGROUND1);
 868   context.draw_text(gold_text, str,
 869       Vector(screen->w - gold_text->get_text_width(" 99"), 0),LEFT_ALLIGN, LAYER_FOREGROUND1);
 870
 871   if (player_status.lives >= 5)
 872     {
 873       sprintf(str, "%dx", player_status.lives);
 874       float x = screen->w - gold_text->get_text_width(str) - tux_life->w;
 875       context.draw_text(gold_text, str, Vector(x, 20), LEFT_ALLIGN, LAYER_FOREGROUND1);
 876       context.draw_surface(tux_life, Vector(screen->w - 16, 20),
 877           LAYER_FOREGROUND1);
 878     }
 879   else
 880     {
 881       for(int i= 0; i < player_status.lives; ++i)
 882         context.draw_surface(tux_life,
 883             Vector(screen->w - tux_life->w*4 +(tux_life->w*i), 20),
 884             LAYER_FOREGROUND1);
 885     }
 886
 887   context.draw_text(white_text, _("LIVES"),
 888       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 20),
 889       LEFT_ALLIGN, LAYER_FOREGROUND1);
 890
 891   if(show_fps)
 892     {
 893       sprintf(str, "%2.1f", fps_fps);
 894       context.draw_text(white_text, "FPS",
 895           Vector(screen->w - white_text->get_text_width("FPS     "), 40),
 896           LEFT_ALLIGN, LAYER_FOREGROUND1);
 897       context.draw_text(gold_text, str,
 898           Vector(screen->w-4*16, 40), LEFT_ALLIGN, LAYER_FOREGROUND1);
 899     }
 900 }
 901
 902 void
 903 GameSession::drawresultscreen(void)
 904 {
 905   char str[80];
 906
 907   DrawingContext context;
 908   currentsector->background->draw(context);
 909
 910   context.draw_text(blue_text, _("Result:"), Vector(screen->w/2, 200),
 911       CENTER_ALLIGN, LAYER_FOREGROUND1);
 912
 913   sprintf(str, _("SCORE: %d"), global_stats.get_points(SCORE_STAT));
 914   context.draw_text(gold_text, str, Vector(screen->w/2, 224), CENTER_ALLIGN, LAYER_FOREGROUND1);
 915
 916   sprintf(str, _("COINS: %d"), player_status.distros);
 917   context.draw_text(gold_text, str, Vector(screen->w/2, 256), CENTER_ALLIGN, LAYER_FOREGROUND1);
 918
 919   context.do_drawing();
 920
 921   SDL_Event event;
 922   wait_for_event(event,2000,5000,true);
 923 }
 924
 925 std::string slotinfo(int slot)
 926 {
 927   std::string tmp;
 928   std::string slotfile;
 929   std::string title;
 930   std::stringstream stream;
 931   stream << slot;
 932   slotfile = st_save_dir + "/slot" + stream.str() + ".stsg";
 933
 934   lisp_object_t* savegame = lisp_read_from_file(slotfile.c_str());
 935   if (savegame)
 936     {
 937       LispReader reader(lisp_cdr(savegame));
 938       reader.read_string("title", title);
 939       lisp_free(savegame);
 940     }
 941
 942   if (access(slotfile.c_str(), F_OK) == 0)
 943     {
 944       if (!title.empty())
 945         tmp = "Slot " + stream.str() + " - " + title;
 946       else
 947         tmp = "Slot " + stream.str() + " - Savegame";
 948     }
 949   else
 950     tmp = std::string(_("Slot")) + " " + stream.str() + " - " + std::string(_("Free"));
 951
 952   return tmp;
 953 }
 954
 955 bool process_load_game_menu()
 956 {
 957   int slot = load_game_menu->check();
 958
 959   if(slot != -1 && load_game_menu->get_item_by_id(slot).kind == MN_ACTION)
 960     {
 961       std::stringstream stream;
 962       stream << slot;
 963       std::string slotfile = st_save_dir + "/slot" + stream.str() + ".stsg";
 964
 965       if (access(slotfile.c_str(), F_OK) != 0)
 966         {
 967           shrink_fade(Vector(screen->w/2,screen->h/2), 600);
 968           draw_intro();
 969         }
 970
 971       fadeout(256);
 972       DrawingContext context;
 973       context.draw_text(white_text, "Loading...",
 974                         Vector(screen->w/2, screen->h/2), CENTER_ALLIGN, LAYER_FOREGROUND1);
 975       context.do_drawing();
 976
 977       WorldMapNS::WorldMap worldmap;
 978
 979       worldmap.set_map_filename("icyisland.stwm");
 980       // Load the game or at least set the savegame_file variable
 981       worldmap.loadgame(slotfile);
 982
 983       worldmap.display();
 984
 985       Menu::set_current(main_menu);
 986
 987       Ticks::pause_stop();
 988       return true;
 989     }
 990   else
 991     {
 992       return false;
 993     }
 994 }