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())
 202     context.draw_text(white_small_text,
 203       std::string(_("by ")) + level->get_author(),
 204       Vector(screen->w/2, 350), CENTER_ALLIGN, LAYER_FOREGROUND1);
 205
 206
 207   if(flip_level)
 208     context.draw_text(white_text,
 209       _("Level Vertically Flipped!"),
 210       Vector(screen->w/2, 310), CENTER_ALLIGN, LAYER_FOREGROUND1);
 211
 212   if(best_level_statistics != NULL)
 213     best_level_statistics->draw_message_info(context, _("Best Level Statistics"));
 214
 215   context.do_drawing();
 216
 217   SDL_Event event;
 218   wait_for_event(event,1000,3000,true);
 219 }
 220
 221 /* Reset Timers */
 222 void
 223 GameSession::start_timers()
 224 {
 225   time_left.start(level->timelimit);
 226   Ticks::pause_init();
 227 }
 228
 229 void
 230 GameSession::on_escape_press()
 231 {
 232   if(currentsector->player->dying || end_sequence != NO_ENDSEQUENCE)
 233     return;   // don't let the player open the menu, when he is dying
 234
 235   if(game_pause)
 236     return;
 237
 238   if(st_gl_mode == ST_GL_TEST)
 239     {
 240       exit_status = ES_LEVEL_ABORT;
 241     }
 242   else if (!Menu::current())
 243     {
 244       /* Tell Tux that the keys are all down, otherwise
 245         it could have nasty bugs, like going allways to the right
 246         or whatever that key does */
 247       Player& tux = *(currentsector->player);
 248       tux.key_event((SDLKey)keymap.up, UP);
 249       tux.key_event((SDLKey)keymap.down, UP);
 250       tux.key_event((SDLKey)keymap.left, UP);
 251       tux.key_event((SDLKey)keymap.right, UP);
 252       tux.key_event((SDLKey)keymap.jump, UP);
 253       tux.key_event((SDLKey)keymap.power, UP);
 254
 255       Menu::set_current(game_menu);
 256       Ticks::pause_start();
 257     }
 258 }
 259
 260 void
 261 GameSession::process_events()
 262 {
 263   if (end_sequence != NO_ENDSEQUENCE)
 264     {
 265       Player& tux = *currentsector->player;
 266
 267       tux.input.fire  = UP;
 268       tux.input.left  = UP;
 269       tux.input.right = DOWN;
 270       tux.input.down  = UP;
 271
 272       if (int(last_x_pos) == int(tux.get_pos().x))
 273         tux.input.up    = DOWN;
 274       else
 275         tux.input.up    = UP;
 276
 277       last_x_pos = tux.get_pos().x;
 278
 279       SDL_Event event;
 280       while (SDL_PollEvent(&event))
 281         {
 282           /* Check for menu-events, if the menu is shown */
 283           if (Menu::current())
 284             {
 285               Menu::current()->event(event);
 286               if(!Menu::current())
 287               Ticks::pause_stop();
 288             }
 289
 290           switch(event.type)
 291             {
 292             case SDL_QUIT:        /* Quit event - quit: */
 293               Termination::abort("Received window close", "");
 294               break;
 295
 296             case SDL_KEYDOWN:     /* A keypress! */
 297               {
 298                 SDLKey key = event.key.keysym.sym;
 299
 300                 switch(key)
 301                   {
 302                   case SDLK_ESCAPE:    /* Escape: Open/Close the menu: */
 303                     on_escape_press();
 304                     break;
 305                   default:
 306                     break;
 307                   }
 308               }
 309
 310             case SDL_JOYBUTTONDOWN:
 311               if (event.jbutton.button == joystick_keymap.start_button)
 312                 on_escape_press();
 313               break;
 314             }
 315         }
 316     }
 317   else // normal mode
 318     {
 319       if(!Menu::current() && !game_pause)
 320         Ticks::pause_stop();
 321
 322       SDL_Event event;
 323       while (SDL_PollEvent(&event))
 324         {
 325           /* Check for menu-events, if the menu is shown */
 326           if (Menu::current())
 327             {
 328               Menu::current()->event(event);
 329               if(!Menu::current())
 330                 Ticks::pause_stop();
 331             }
 332           else
 333             {
 334               Player& tux = *currentsector->player;
 335
 336               switch(event.type)
 337                 {
 338                 case SDL_QUIT:        /* Quit event - quit: */
 339                   Termination::abort("Received window close", "");
 340                   break;
 341
 342                 case SDL_KEYDOWN:     /* A keypress! */
 343                   {
 344                     SDLKey key = event.key.keysym.sym;
 345
 346                     if(tux.key_event(key,DOWN))
 347                       break;
 348
 349                     switch(key)
 350                       {
 351                       case SDLK_ESCAPE:    /* Escape: Open/Close the menu: */
 352                         on_escape_press();
 353                         break;
 354                       default:
 355                         break;
 356                       }
 357                   }
 358                   break;
 359                 case SDL_KEYUP:      /* A keyrelease! */
 360                   {
 361                     SDLKey key = event.key.keysym.sym;
 362
 363                     if(tux.key_event(key, UP))
 364                       break;
 365
 366                     switch(key)
 367                       {
 368                       case SDLK_a:
 369                         if(debug_mode)
 370                         {
 371                           char buf[160];
 372                           snprintf(buf, sizeof(buf), "P: %4.1f,%4.1f",
 373                               tux.get_pos().x, tux.get_pos().y);
 374                           context->draw_text(white_text, buf,
 375                               Vector(0, screen->h - white_text->get_height()),
 376                               LEFT_ALLIGN, LAYER_FOREGROUND1);
 377                           context->do_drawing();
 378                           SDL_Delay(1000);
 379                         }
 380                         break;
 381                       case SDLK_p:
 382                         if(!Menu::current())
 383                           {
 384                           // "lifeup" cheat activates pause cause of the 'p'
 385                           // so work around to ignore it
 386                             if(compare_last(last_keys, "lifeu"))
 387                               break;
 388
 389                             if(game_pause)
 390                               {
 391                                 game_pause = false;
 392                                 Ticks::pause_stop();
 393                               }
 394                             else
 395                               {
 396                                 game_pause = true;
 397                                 Ticks::pause_start();
 398                               }
 399                           }
 400                         break;
 401                       default:
 402                         break;
 403                       }
 404                   }
 405
 406                         /* Check if chacrater is ASCII */
 407                         char ch[2];
 408                         if((event.key.keysym.unicode & 0xFF80) == 0)
 409                           {
 410                           ch[0] = event.key.keysym.unicode & 0x7F;
 411                           ch[1] = '\0';
 412                           }
 413                         last_keys.append(ch);  // add to cheat keys
 414
 415                         // Cheating words (the goal of this is really for debugging,
 416                         // but could be used for some cheating, nothing wrong with that)
 417                         if(compare_last(last_keys, "grow"))
 418                           {
 419                           tux.grow(false);
 420                           last_keys.clear();
 421                           }
 422                         if(compare_last(last_keys, "fire"))
 423                           {
 424                           tux.grow(false);
 425                           tux.got_power = tux.FIRE_POWER;
 426                           last_keys.clear();
 427                           }
 428                         if(compare_last(last_keys, "ice"))
 429                           {
 430                           tux.grow(false);
 431                           tux.got_power = tux.ICE_POWER;
 432                           last_keys.clear();
 433                           }
 434                         if(compare_last(last_keys, "lifeup"))
 435                           {
 436                           player_status.lives++;
 437                           last_keys.clear();
 438                           }
 439                         if(compare_last(last_keys, "lifedown"))
 440                           {
 441                           player_status.lives--;
 442                           last_keys.clear();
 443                           }
 444                         if(compare_last(last_keys, "grease"))
 445                           {
 446                           tux.physic.set_velocity_x(tux.physic.get_velocity_x()*3);
 447                           last_keys.clear();
 448                           }
 449                         if(compare_last(last_keys, "invincible"))
 450                           {    // be invincle for the rest of the level
 451                           tux.invincible_timer.start(10000);
 452                           last_keys.clear();
 453                           }
 454                         if(compare_last(last_keys, "shrink"))
 455                           {    // remove powerups
 456                           tux.kill(tux.SHRINK);
 457                           last_keys.clear();
 458                           }
 459                         if(compare_last(last_keys, "kill"))
 460                           {    // kill Tux, but without losing a life
 461                           player_status.lives++;
 462                           tux.kill(tux.KILL);
 463                           last_keys.clear();
 464                           }
 465                         if(compare_last(last_keys, "hover"))
 466                           {    // toggle hover ability on/off
 467                           tux.enable_hover = !tux.enable_hover;
 468                           last_keys.clear();
 469                           }
 470                         if(compare_last(last_keys, "gotoend"))
 471                           {    // goes to the end of the level
 472                           tux.move(Vector(
 473                               (currentsector->solids->get_width()*32)
 474                                 - (screen->w*2),
 475                                 0));
 476                           currentsector->camera->reset(
 477                               Vector(tux.get_pos().x, tux.get_pos().y));
 478                           last_keys.clear();
 479                           }
 480                         // temporary to help player's choosing a flapping
 481                         if(compare_last(last_keys, "marek"))
 482                           {
 483                           tux.flapping_mode = Player::MAREK_FLAP;
 484                           last_keys.clear();
 485                           }
 486                         if(compare_last(last_keys, "ricardo"))
 487                           {
 488                           tux.flapping_mode = Player::RICARDO_FLAP;
 489                           last_keys.clear();
 490                           }
 491                         if(compare_last(last_keys, "ryan"))
 492                           {
 493                           tux.flapping_mode = Player::RYAN_FLAP;
 494                           last_keys.clear();
 495                           }
 496                   break;
 497
 498                 case SDL_JOYAXISMOTION:
 499                   if (event.jaxis.axis == joystick_keymap.x_axis)
 500                     {
 501                       if (event.jaxis.value < -joystick_keymap.dead_zone)
 502                         {
 503                           tux.input.left  = DOWN;
 504                           tux.input.right = UP;
 505                         }
 506                       else if (event.jaxis.value > joystick_keymap.dead_zone)
 507                         {
 508                           tux.input.left  = UP;
 509                           tux.input.right = DOWN;
 510                         }
 511                       else
 512                         {
 513                           tux.input.left  = DOWN;
 514                           tux.input.right = DOWN;
 515                         }
 516                     }
 517                   else if (event.jaxis.axis == joystick_keymap.y_axis)
 518                     {
 519                       if (event.jaxis.value > joystick_keymap.dead_zone)
 520                         {
 521                         tux.input.up = DOWN;
 522                         tux.input.down = UP;
 523                         }
 524                       else if (event.jaxis.value < -joystick_keymap.dead_zone)
 525                         {
 526                         tux.input.up = UP;
 527                         tux.input.down = DOWN;
 528                         }
 529                       else
 530                         {
 531                         tux.input.up = DOWN;
 532                         tux.input.down = DOWN;
 533                         }
 534                     }
 535                   break;
 536
 537                 case SDL_JOYHATMOTION:
 538                   if(event.jhat.value & SDL_HAT_UP) {
 539                     tux.input.up = DOWN;
 540                     tux.input.down = UP;
 541                   } else if(event.jhat.value & SDL_HAT_DOWN) {
 542                     tux.input.up = UP;
 543                     tux.input.down = DOWN;
 544                   } else if(event.jhat.value & SDL_HAT_LEFT) {
 545                     tux.input.left = DOWN;
 546                     tux.input.right = UP;
 547                   } else if(event.jhat.value & SDL_HAT_RIGHT) {
 548                     tux.input.left = UP;
 549                     tux.input.right = DOWN;
 550                   } else if(event.jhat.value == SDL_HAT_CENTERED) {
 551                     tux.input.left = UP;
 552                     tux.input.right = UP;
 553                     tux.input.up = UP;
 554                     tux.input.down = UP;
 555                   }
 556                   break;
 557
 558                 case SDL_JOYBUTTONDOWN:
 559                   if (event.jbutton.button == joystick_keymap.a_button)
 560                     tux.input.jump = DOWN;
 561                   else if (event.jbutton.button == joystick_keymap.b_button)
 562                     tux.input.fire = DOWN;
 563                   else if (event.jbutton.button == joystick_keymap.start_button)
 564                     on_escape_press();
 565                   break;
 566                 case SDL_JOYBUTTONUP:
 567                   if (event.jbutton.button == joystick_keymap.a_button)
 568                     tux.input.jump = UP;
 569                   else if (event.jbutton.button == joystick_keymap.b_button)
 570                     tux.input.fire = UP;
 571                   break;
 572
 573                 default:
 574                   break;
 575                 }  /* switch */
 576             }
 577         } /* while */
 578     }
 579 }
 580
 581 void
 582 GameSession::check_end_conditions()
 583 {
 584   Player* tux = currentsector->player;
 585
 586   /* End of level? */
 587   if(end_sequence && endsequence_timer.check()) {
 588       exit_status = ES_LEVEL_FINISHED;
 589       global_stats += last_swap_stats;  // add swap points stats
 590       return;
 591   } else if (!end_sequence && tux->is_dead()) {
 592     player_status.bonus = PlayerStatus::NO_BONUS;
 593
 594     if (player_status.lives < 0) { // No more lives!?
 595       exit_status = ES_GAME_OVER;
 596     } else { // Still has lives, so reset Tux to the levelstart
 597       restart_level();
 598     }
 599
 600     return;
 601   }
 602 }
 603
 604 void
 605 GameSession::action(float elapsed_time)
 606 {
 607   // advance timers
 608   if (exit_status == ES_NONE && !currentsector->player->growing_timer.check())
 609     {
 610       // Update Tux and the World
 611       currentsector->action(elapsed_time);
 612     }
 613
 614   // respawning in new sector?
 615   if(newsector != "" && newspawnpoint != "") {
 616     Sector* sector = level->get_sector(newsector);
 617     currentsector = sector;
 618     currentsector->activate(newspawnpoint);
 619     currentsector->play_music(LEVEL_MUSIC);
 620     newsector = newspawnpoint = "";
 621   }
 622 }
 623
 624 void
 625 GameSession::draw()
 626 {
 627   currentsector->draw(*context);
 628   drawstatus(*context);
 629
 630   if(game_pause)
 631     {
 632       int x = screen->h / 20;
 633       for(int i = 0; i < x; ++i)
 634         {
 635           context->draw_filled_rect(
 636               Vector(i % 2 ? (pause_menu_frame * i)%screen->w :
 637                 -((pause_menu_frame * i)%screen->w)
 638                 ,(i*20+pause_menu_frame)%screen->h),
 639               Vector(screen->w,10),
 640               Color(20,20,20, rand() % 20 + 1), LAYER_FOREGROUND1+1);
 641         }
 642       context->draw_filled_rect(
 643           Vector(0,0), Vector(screen->w, screen->h),
 644           Color(rand() % 50, rand() % 50, rand() % 50, 128), LAYER_FOREGROUND1);
 645       context->draw_text(blue_text, _("PAUSE - Press 'P' To Play"),
 646           Vector(screen->w/2, 230), CENTER_ALLIGN, LAYER_FOREGROUND1+2);
 647
 648       char str1[60];
 649       char str2[124];
 650       sprintf(str1, _("Playing: "));
 651       sprintf(str2, level->name.c_str());
 652
 653       context->draw_text(blue_text, str1,
 654           Vector((screen->w - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2, 340),
 655           LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 656       context->draw_text(white_text, str2,
 657           Vector(((screen->w - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2)+blue_text->get_text_width(str1), 340),
 658           LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 659     }
 660
 661   if(Menu::current())
 662     {
 663       Menu::current()->draw(*context);
 664       mouse_cursor->draw(*context);
 665     }
 666
 667   context->do_drawing();
 668 }
 669
 670 void
 671 GameSession::process_menu()
 672 {
 673   Menu* menu = Menu::current();
 674   if(menu)
 675     {
 676       menu->action();
 677
 678       if(menu == game_menu)
 679         {
 680           switch (game_menu->check())
 681             {
 682             case MNID_CONTINUE:
 683               Ticks::pause_stop();
 684               break;
 685             case MNID_ABORTLEVEL:
 686               Ticks::pause_stop();
 687               exit_status = ES_LEVEL_ABORT;
 688               break;
 689             }
 690         }
 691       else if(menu == options_menu)
 692         {
 693           process_options_menu();
 694         }
 695       else if(menu == load_game_menu )
 696         {
 697           process_load_game_menu();
 698         }
 699     }
 700 }
 701
 702 GameSession::ExitStatus
 703 GameSession::run()
 704 {
 705   Menu::set_current(0);
 706   current_ = this;
 707
 708   int fps_cnt = 0;
 709
 710   // Eat unneeded events
 711   SDL_Event event;
 712   while(SDL_PollEvent(&event))
 713   {}
 714
 715   draw();
 716
 717   Uint32 lastticks = SDL_GetTicks();
 718   fps_ticks = SDL_GetTicks();
 719
 720   while (exit_status == ES_NONE) {
 721     Uint32 ticks = SDL_GetTicks();
 722     float elapsed_time = float(ticks - lastticks) / 1000.;
 723     global_time += elapsed_time;
 724     lastticks = ticks;
 725     // 40fps is minimum
 726     if(elapsed_time > .05)
 727       elapsed_time = .05;
 728
 729     /* Handle events: */
 730     currentsector->player->input.old_fire = currentsector->player->input.fire;
 731     currentsector->player->input.old_up = currentsector->player->input.old_up;
 732
 733     process_events();
 734     process_menu();
 735
 736     // Update the world state and all objects in the world
 737     // Do that with a constante time-delta so that the game will run
 738     // determistic and not different on different machines
 739     if(!game_pause && !Menu::current())
 740     {
 741       // Update the world
 742       check_end_conditions();
 743       if (end_sequence == ENDSEQUENCE_RUNNING)
 744         action(elapsed_time/2);
 745       else if(end_sequence == NO_ENDSEQUENCE)
 746         action(elapsed_time);
 747     }
 748     else
 749     {
 750       ++pause_menu_frame;
 751       SDL_Delay(50);
 752     }
 753
 754     draw();
 755
 756     /* Time stops in pause mode */
 757     if(game_pause || Menu::current())
 758     {
 759       continue;
 760     }
 761
 762     //frame_rate.update();
 763
 764     /* Handle time: */
 765     if (time_left.check() && currentsector->player->dying == DYING_NOT
 766         && !end_sequence)
 767       currentsector->player->kill(Player::KILL);
 768
 769     /* Handle music: */
 770     if(currentsector->player->invincible_timer.check() && !end_sequence)
 771     {
 772       currentsector->play_music(HERRING_MUSIC);
 773     }
 774     /* are we low on time ? */
 775     else if (time_left.get_timeleft() < TIME_WARNING && !end_sequence)
 776     {
 777       currentsector->play_music(HURRYUP_MUSIC);
 778     }
 779     /* or just normal music? */
 780     else if(currentsector->get_music_type() != LEVEL_MUSIC && !end_sequence)
 781     {
 782       currentsector->play_music(LEVEL_MUSIC);
 783     }
 784
 785     /* Calculate frames per second */
 786     if(show_fps)
 787     {
 788       ++fps_cnt;
 789
 790       if(SDL_GetTicks() - fps_ticks >= 500)
 791       {
 792         fps_fps = (float) fps_cnt / .5;
 793         fps_cnt = 0;
 794         fps_ticks = SDL_GetTicks();
 795       }
 796     }
 797   }
 798
 799   return exit_status;
 800 }
 801
 802 void
 803 GameSession::respawn(const std::string& sector, const std::string& spawnpoint)
 804 {
 805   newsector = sector;
 806   newspawnpoint = spawnpoint;
 807 }
 808
 809 void
 810 GameSession::start_sequence(const std::string& sequencename)
 811 {
 812   if(sequencename == "endsequence") {
 813     if(end_sequence)
 814       return;
 815
 816     end_sequence = ENDSEQUENCE_RUNNING;
 817     endsequence_timer.start(7.0); // 7 seconds until we finish the map
 818     last_x_pos = -1;
 819     SoundManager::get()->play_music(level_end_song, 0);
 820     currentsector->player->invincible_timer.start(7.0);
 821
 822     // add left time to stats
 823     global_stats.set_points(TIME_NEEDED_STAT,
 824         int(time_left.get_period() - time_left.get_timeleft()));
 825
 826     if(level->get_end_sequence_type() == Level::FIREWORKS_ENDSEQ_ANIM) {
 827       currentsector->add_object(new Fireworks());
 828     }
 829   } else {
 830     std::cout << "Unknown sequence '" << sequencename << "'.\n";
 831   }
 832 }
 833
 834 /* (Status): */
 835 void
 836 GameSession::drawstatus(DrawingContext& context)
 837 {
 838   char str[60];
 839
 840   snprintf(str, 60, " %d", global_stats.get_points(SCORE_STAT));
 841   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
 842   context.draw_text(gold_text, str, Vector(96, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
 843
 844   if(st_gl_mode == ST_GL_TEST)
 845     {
 846       context.draw_text(white_text, _("Press ESC To Return"), Vector(0,20),
 847           LEFT_ALLIGN, LAYER_FOREGROUND1);
 848     }
 849
 850   if(time_left.check()) {
 851     context.draw_text(white_text, _("TIME's UP"), Vector(screen->w/2, 0),
 852         CENTER_ALLIGN, LAYER_FOREGROUND1);
 853   } else if (time_left.get_timeleft() > TIME_WARNING
 854       || int(global_time * 2.5) % 2) {
 855     sprintf(str, " %d", int(time_left.get_timeleft()));
 856     context.draw_text(white_text, _("TIME"),
 857         Vector(screen->w/2, 0), CENTER_ALLIGN, LAYER_FOREGROUND1);
 858     context.draw_text(gold_text, str,
 859         Vector(screen->w/2 + 4*16, 0), CENTER_ALLIGN, LAYER_FOREGROUND1);
 860   }
 861
 862   sprintf(str, " %d", player_status.distros);
 863   context.draw_text(white_text, _("COINS"),
 864       Vector(screen->w - white_text->get_text_width(_("COINS"))-white_text->get_text_width("   99"), 0),
 865         LEFT_ALLIGN, LAYER_FOREGROUND1);
 866   context.draw_text(gold_text, str,
 867       Vector(screen->w - gold_text->get_text_width(" 99"), 0),LEFT_ALLIGN, LAYER_FOREGROUND1);
 868
 869   if (player_status.lives >= 5)
 870     {
 871       sprintf(str, "%dx", player_status.lives);
 872       float x = screen->w - gold_text->get_text_width(str) - tux_life->w;
 873       context.draw_text(gold_text, str, Vector(x, 20), LEFT_ALLIGN, LAYER_FOREGROUND1);
 874       context.draw_surface(tux_life, Vector(screen->w - 16, 20),
 875           LAYER_FOREGROUND1);
 876     }
 877   else
 878     {
 879       for(int i= 0; i < player_status.lives; ++i)
 880         context.draw_surface(tux_life,
 881             Vector(screen->w - tux_life->w*4 +(tux_life->w*i), 20),
 882             LAYER_FOREGROUND1);
 883     }
 884
 885   context.draw_text(white_text, _("LIVES"),
 886       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 20),
 887       LEFT_ALLIGN, LAYER_FOREGROUND1);
 888
 889   if(show_fps)
 890     {
 891       sprintf(str, "%2.1f", fps_fps);
 892       context.draw_text(white_text, "FPS",
 893           Vector(screen->w - white_text->get_text_width("FPS     "), 40),
 894           LEFT_ALLIGN, LAYER_FOREGROUND1);
 895       context.draw_text(gold_text, str,
 896           Vector(screen->w-4*16, 40), LEFT_ALLIGN, LAYER_FOREGROUND1);
 897     }
 898 }
 899
 900 void
 901 GameSession::drawresultscreen(void)
 902 {
 903   char str[80];
 904
 905   DrawingContext context;
 906   currentsector->background->draw(context);
 907
 908   context.draw_text(blue_text, _("Result:"), Vector(screen->w/2, 200),
 909       CENTER_ALLIGN, LAYER_FOREGROUND1);
 910
 911   sprintf(str, _("SCORE: %d"), global_stats.get_points(SCORE_STAT));
 912   context.draw_text(gold_text, str, Vector(screen->w/2, 224), CENTER_ALLIGN, LAYER_FOREGROUND1);
 913
 914   sprintf(str, _("COINS: %d"), player_status.distros);
 915   context.draw_text(gold_text, str, Vector(screen->w/2, 256), CENTER_ALLIGN, LAYER_FOREGROUND1);
 916
 917   context.do_drawing();
 918
 919   SDL_Event event;
 920   wait_for_event(event,2000,5000,true);
 921 }
 922
 923 std::string slotinfo(int slot)
 924 {
 925   std::string tmp;
 926   std::string slotfile;
 927   std::string title;
 928   std::stringstream stream;
 929   stream << slot;
 930   slotfile = st_save_dir + "/slot" + stream.str() + ".stsg";
 931
 932   lisp_object_t* savegame = lisp_read_from_file(slotfile.c_str());
 933   if (savegame)
 934     {
 935       LispReader reader(lisp_cdr(savegame));
 936       reader.read_string("title", title);
 937       lisp_free(savegame);
 938     }
 939
 940   if (access(slotfile.c_str(), F_OK) == 0)
 941     {
 942       if (!title.empty())
 943         tmp = "Slot " + stream.str() + " - " + title;
 944       else
 945         tmp = "Slot " + stream.str() + " - Savegame";
 946     }
 947   else
 948     tmp = std::string(_("Slot")) + " " + stream.str() + " - " + std::string(_("Free"));
 949
 950   return tmp;
 951 }
 952
 953 bool process_load_game_menu()
 954 {
 955   int slot = load_game_menu->check();
 956
 957   if(slot != -1 && load_game_menu->get_item_by_id(slot).kind == MN_ACTION)
 958     {
 959       std::stringstream stream;
 960       stream << slot;
 961       std::string slotfile = st_save_dir + "/slot" + stream.str() + ".stsg";
 962
 963       if (access(slotfile.c_str(), F_OK) != 0)
 964         {
 965           shrink_fade(Vector(screen->w/2,screen->h/2), 600);
 966           draw_intro();
 967         }
 968
 969       fadeout(256);
 970       DrawingContext context;
 971       context.draw_text(white_text, "Loading...",
 972                         Vector(screen->w/2, screen->h/2), CENTER_ALLIGN, LAYER_FOREGROUND1);
 973       context.do_drawing();
 974
 975       WorldMapNS::WorldMap worldmap;
 976
 977       worldmap.set_map_filename("icyisland.stwm");
 978       // Load the game or at least set the savegame_file variable
 979       worldmap.loadgame(slotfile);
 980
 981       worldmap.display();
 982
 983       Menu::set_current(main_menu);
 984
 985       Ticks::pause_stop();
 986       return true;
 987     }
 988   else
 989     {
 990       return false;
 991     }
 992 }