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 <iostream>
  23 #include <sstream>
  24 #include <cassert>
  25 #include <cstdio>
  26 #include <cstdlib>
  27 #include <cmath>
  28 #include <cstring>
  29 #include <cerrno>
  30 #include <unistd.h>
  31 #include <ctime>
  32
  33 #include "SDL.h"
  34
  35 #ifndef WIN32
  36 #include <sys/types.h>
  37 #include <ctype.h>
  38 #endif
  39
  40 #include "defines.h"
  41 #include "app/globals.h"
  42 #include "gameloop.h"
  43 #include "video/screen.h"
  44 #include "app/setup.h"
  45 #include "high_scores.h"
  46 #include "gui/menu.h"
  47 #include "badguy.h"
  48 #include "sector.h"
  49 #include "special.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
  66 GameSession* GameSession::current_ = 0;
  67
  68 bool compare_last(std::string& haystack, std::string needle)
  69 {
  70 int haystack_size = haystack.size();
  71 int needle_size = needle.size();
  72
  73 if(haystack_size < needle_size)
  74   return false;
  75
  76 if(haystack.compare(haystack_size-needle_size, needle_size, needle) == 0)
  77   return true;
  78 return false;
  79 }
  80
  81 GameSession::GameSession(const std::string& levelname_, int mode, bool flip_level_, Statistics* statistics)
  82   : level(0), currentsector(0), st_gl_mode(mode),
  83     end_sequence(NO_ENDSEQUENCE), levelname(levelname_), flip_level(flip_level_),
  84     best_level_statistics(statistics)
  85 {
  86   current_ = this;
  87
  88   global_frame_counter = 0;
  89   game_pause = false;
  90   fps_fps = 0;
  91
  92   fps_timer.init(true);
  93   frame_timer.init(true);
  94   random_timer.init(true);
  95   frame_rate.set_fps(100);
  96
  97   context = new DrawingContext();
  98
  99   if(flip_levels_mode)
 100     flip_level = true;
 101
 102   last_swap_point = Vector(-1, -1);
 103   last_swap_stats.reset();
 104
 105   restart_level();
 106 }
 107
 108 void
 109 GameSession::restart_level()
 110 {
 111   game_pause   = false;
 112   exit_status  = ES_NONE;
 113   end_sequence = NO_ENDSEQUENCE;
 114
 115   fps_timer.init(true);
 116   frame_timer.init(true);
 117   random_timer.init(true);
 118
 119   last_keys.clear();
 120
 121   Vector tux_pos = Vector(-1,-1);
 122   if (currentsector)
 123     { // Tux has lost a life, so we try to respawn him at the nearest reset point
 124       tux_pos = currentsector->player->base;
 125     }
 126
 127   delete level;
 128   currentsector = 0;
 129
 130   level = new Level;
 131   level->load(levelname);
 132   if(flip_level)
 133     level->do_vertical_flip();
 134
 135   global_stats.reset();
 136   global_stats.set_total_points(COINS_COLLECTED_STAT, level->get_total_coins());
 137   global_stats.set_total_points(BADGUYS_KILLED_STAT, level->get_total_badguys());
 138   global_stats.set_total_points(TIME_NEEDED_STAT, level->time_left);
 139
 140   currentsector = level->get_sector("main");
 141   if(!currentsector)
 142     Termination::abort("Level has no main sector.", "");
 143   currentsector->activate("main");
 144
 145   // Set Tux to the nearest reset point
 146   if(tux_pos.x != -1)
 147     {
 148     tux_pos = currentsector->get_best_spawn_point(tux_pos);
 149
 150     if(last_swap_point.x > tux_pos.x)
 151       tux_pos = last_swap_point;
 152     else  // new swap point
 153       {
 154       last_swap_point = tux_pos;
 155
 156       last_swap_stats += global_stats;
 157       }
 158
 159     currentsector->player->base.x = tux_pos.x;
 160     currentsector->player->base.y = tux_pos.y;
 161
 162     // has to reset camera on swapping
 163     currentsector->camera->reset(Vector(currentsector->player->base.x,
 164                                         currentsector->player->base.y));
 165     }
 166
 167   if (st_gl_mode != ST_GL_DEMO_GAME)
 168     {
 169       if(st_gl_mode == ST_GL_PLAY || st_gl_mode == ST_GL_LOAD_LEVEL_FILE)
 170         levelintro();
 171     }
 172
 173   time_left.init(true);
 174   start_timers();
 175   currentsector->play_music(LEVEL_MUSIC);
 176 }
 177
 178 GameSession::~GameSession()
 179 {
 180   delete level;
 181   delete context;
 182 }
 183
 184 void
 185 GameSession::levelintro(void)
 186 {
 187   SoundManager::get()->halt_music();
 188
 189   char str[60];
 190
 191   DrawingContext context;
 192   currentsector->background->draw(context);
 193
 194 //  context.draw_text(gold_text, level->get_name(), Vector(screen->w/2, 160),
 195 //      CENTER_ALLIGN, LAYER_FOREGROUND1);
 196   context.draw_center_text(gold_text, level->get_name(), Vector(0, 160),
 197       LAYER_FOREGROUND1);
 198
 199   sprintf(str, "TUX x %d", player_status.lives);
 200   context.draw_text(white_text, str, Vector(screen->w/2, 210),
 201       CENTER_ALLIGN, LAYER_FOREGROUND1);
 202
 203   if(level->get_author().size())
 204     context.draw_text(white_small_text,
 205       std::string(_("by ")) + level->get_author(),
 206       Vector(screen->w/2, 350), CENTER_ALLIGN, LAYER_FOREGROUND1);
 207
 208
 209   if(flip_level)
 210     context.draw_text(white_text,
 211       _("Level Vertically Flipped!"),
 212       Vector(screen->w/2, 310), CENTER_ALLIGN, LAYER_FOREGROUND1);
 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   SDL_Event event;
 220   wait_for_event(event,1000,3000,true);
 221 }
 222
 223 /* Reset Timers */
 224 void
 225 GameSession::start_timers()
 226 {
 227   time_left.start(level->time_left*1000);
 228   Ticks::pause_init();
 229   frame_rate.start();
 230 }
 231
 232 void
 233 GameSession::on_escape_press()
 234 {
 235   if(currentsector->player->dying || end_sequence != NO_ENDSEQUENCE)
 236     return;   // don't let the player open the menu, when he is dying
 237
 238   if(game_pause)
 239     return;
 240
 241   if(st_gl_mode == ST_GL_TEST)
 242     {
 243       exit_status = ES_LEVEL_ABORT;
 244     }
 245   else if (!Menu::current())
 246     {
 247       /* Tell Tux that the keys are all down, otherwise
 248         it could have nasty bugs, like going allways to the right
 249         or whatever that key does */
 250       Player& tux = *(currentsector->player);
 251       tux.key_event((SDLKey)keymap.jump, UP);
 252       tux.key_event((SDLKey)keymap.duck, UP);
 253       tux.key_event((SDLKey)keymap.left, UP);
 254       tux.key_event((SDLKey)keymap.right, UP);
 255       tux.key_event((SDLKey)keymap.fire, UP);
 256
 257       Menu::set_current(game_menu);
 258       Ticks::pause_start();
 259     }
 260 }
 261
 262 void
 263 GameSession::process_events()
 264 {
 265   if (end_sequence != NO_ENDSEQUENCE)
 266     {
 267       Player& tux = *currentsector->player;
 268
 269       tux.input.fire  = UP;
 270       tux.input.left  = UP;
 271       tux.input.right = DOWN;
 272       tux.input.down  = UP;
 273
 274       if (int(last_x_pos) == int(tux.base.x))
 275         tux.input.up    = DOWN;
 276       else
 277         tux.input.up    = UP;
 278
 279       last_x_pos = tux.base.x;
 280
 281       SDL_Event event;
 282       while (SDL_PollEvent(&event))
 283         {
 284           /* Check for menu-events, if the menu is shown */
 285           if (Menu::current())
 286             {
 287               Menu::current()->event(event);
 288               if(!Menu::current())
 289               Ticks::pause_stop();
 290             }
 291
 292           switch(event.type)
 293             {
 294             case SDL_QUIT:        /* Quit event - quit: */
 295               Termination::abort("Received window close", "");
 296               break;
 297
 298             case SDL_KEYDOWN:     /* A keypress! */
 299               {
 300                 SDLKey key = event.key.keysym.sym;
 301
 302                 switch(key)
 303                   {
 304                   case SDLK_ESCAPE:    /* Escape: Open/Close the menu: */
 305                     on_escape_press();
 306                     break;
 307                   default:
 308                     break;
 309                   }
 310               }
 311
 312             case SDL_JOYBUTTONDOWN:
 313               if (event.jbutton.button == joystick_keymap.start_button)
 314                 on_escape_press();
 315               break;
 316             }
 317         }
 318     }
 319   else // normal mode
 320     {
 321       if(!Menu::current() && !game_pause)
 322         Ticks::pause_stop();
 323
 324       SDL_Event event;
 325       while (SDL_PollEvent(&event))
 326         {
 327           /* Check for menu-events, if the menu is shown */
 328           if (Menu::current())
 329             {
 330               Menu::current()->event(event);
 331               if(!Menu::current())
 332                 Ticks::pause_stop();
 333             }
 334           else
 335             {
 336               Player& tux = *currentsector->player;
 337
 338               switch(event.type)
 339                 {
 340                 case SDL_QUIT:        /* Quit event - quit: */
 341                   Termination::abort("Received window close", "");
 342                   break;
 343
 344                 case SDL_KEYDOWN:     /* A keypress! */
 345                   {
 346                     SDLKey key = event.key.keysym.sym;
 347
 348                     if(tux.key_event(key,DOWN))
 349                       break;
 350
 351                     switch(key)
 352                       {
 353                       case SDLK_ESCAPE:    /* Escape: Open/Close the menu: */
 354                         on_escape_press();
 355                         break;
 356                       default:
 357                         break;
 358                       }
 359                   }
 360                   break;
 361                 case SDL_KEYUP:      /* A keyrelease! */
 362                   {
 363                     SDLKey key = event.key.keysym.sym;
 364
 365                     if(tux.key_event(key, UP))
 366                       break;
 367
 368                     switch(key)
 369                       {
 370                       case SDLK_a:
 371                         if(debug_mode)
 372                         {
 373                           char buf[160];
 374                           snprintf(buf, sizeof(buf), "P: %4.1f,%4.1f",
 375                               tux.base.x, tux.base.y);
 376                           context->draw_text(white_text, buf,
 377                               Vector(0, screen->h - white_text->get_height()),
 378                               LEFT_ALLIGN, LAYER_FOREGROUND1);
 379                           context->do_drawing();
 380                           SDL_Delay(1000);
 381                         }
 382                         break;
 383                       case SDLK_p:
 384                         if(!Menu::current())
 385                           {
 386                           // "lifeup" cheat activates pause cause of the 'p'
 387                           // so work around to ignore it
 388                             if(compare_last(last_keys, "lifeu"))
 389                               break;
 390
 391                             if(game_pause)
 392                               {
 393                                 game_pause = false;
 394                                 Ticks::pause_stop();
 395                               }
 396                             else
 397                               {
 398                                 game_pause = true;
 399                                 Ticks::pause_start();
 400                               }
 401                           }
 402                         break;
 403                       default:
 404                         break;
 405                       }
 406                   }
 407
 408                         /* Check if chacrater is ASCII */
 409                         char ch[2];
 410                         if((event.key.keysym.unicode & 0xFF80) == 0)
 411                           {
 412                           ch[0] = event.key.keysym.unicode & 0x7F;
 413                           ch[1] = '\0';
 414                           }
 415                         last_keys.append(ch);  // add to cheat keys
 416
 417                         // Cheating words (the goal of this is really for debugging,
 418                         // but could be used for some cheating, nothing wrong with that)
 419                         if(compare_last(last_keys, "grow"))
 420                           {
 421                           tux.grow(false);
 422                           last_keys.clear();
 423                           }
 424                         if(compare_last(last_keys, "fire"))
 425                           {
 426                           tux.grow(false);
 427                           tux.got_power = tux.FIRE_POWER;
 428                           last_keys.clear();
 429                           }
 430                         if(compare_last(last_keys, "ice"))
 431                           {
 432                           tux.grow(false);
 433                           tux.got_power = tux.ICE_POWER;
 434                           last_keys.clear();
 435                           }
 436                         if(compare_last(last_keys, "lifeup"))
 437                           {
 438                           player_status.lives++;
 439                           last_keys.clear();
 440                           }
 441                         if(compare_last(last_keys, "lifedown"))
 442                           {
 443                           player_status.lives--;
 444                           last_keys.clear();
 445                           }
 446                         if(compare_last(last_keys, "grease"))
 447                           {
 448                           tux.physic.set_velocity_x(tux.physic.get_velocity_x()*3);
 449                           last_keys.clear();
 450                           }
 451                         if(compare_last(last_keys, "invincible"))
 452                           {    // be invincle for the rest of the level
 453                           tux.invincible_timer.start(time_left.get_left());
 454                           last_keys.clear();
 455                           }
 456                         if(compare_last(last_keys, "shrink"))
 457                           {    // remove powerups
 458                           tux.kill(tux.SHRINK);
 459                           last_keys.clear();
 460                           }
 461                         if(compare_last(last_keys, "kill"))
 462                           {    // kill Tux, but without losing a life
 463                           player_status.lives++;
 464                           tux.kill(tux.KILL);
 465                           last_keys.clear();
 466                           }
 467                         if(compare_last(last_keys, "hover"))
 468                           {    // toggle hover ability on/off
 469                           tux.enable_hover = !tux.enable_hover;
 470                           last_keys.clear();
 471                           }
 472                         if(compare_last(last_keys, "gotoend"))
 473                           {    // goes to the end of the level
 474                           tux.base.x = (currentsector->solids->get_width()*32) - (screen->w*2);
 475                           tux.base.y = 0;
 476                           currentsector->camera->reset(Vector(tux.base.x, tux.base.y));
 477                           last_keys.clear();
 478                           }
 479                   break;
 480
 481                 case SDL_JOYAXISMOTION:
 482                   if (event.jaxis.axis == joystick_keymap.x_axis)
 483                     {
 484                       if (event.jaxis.value < -joystick_keymap.dead_zone)
 485                         {
 486                           tux.input.left  = DOWN;
 487                           tux.input.right = UP;
 488                         }
 489                       else if (event.jaxis.value > joystick_keymap.dead_zone)
 490                         {
 491                           tux.input.left  = UP;
 492                           tux.input.right = DOWN;
 493                         }
 494                       else
 495                         {
 496                           tux.input.left  = DOWN;
 497                           tux.input.right = DOWN;
 498                         }
 499                     }
 500                   else if (event.jaxis.axis == joystick_keymap.y_axis)
 501                     {
 502                       if (event.jaxis.value > joystick_keymap.dead_zone)
 503                         tux.input.down = DOWN;
 504                       else if (event.jaxis.value < -joystick_keymap.dead_zone)
 505                         tux.input.down = UP;
 506                       else
 507                         tux.input.down = UP;
 508                     }
 509                   break;
 510
 511                 case SDL_JOYHATMOTION:
 512                   if(event.jhat.value & SDL_HAT_UP) {
 513                     tux.input.up = DOWN;
 514                     tux.input.down = UP;
 515                   } else if(event.jhat.value & SDL_HAT_DOWN) {
 516                     tux.input.up = UP;
 517                     tux.input.down = DOWN;
 518                   } else if(event.jhat.value & SDL_HAT_LEFT) {
 519                     tux.input.left = DOWN;
 520                     tux.input.right = UP;
 521                   } else if(event.jhat.value & SDL_HAT_RIGHT) {
 522                     tux.input.left = UP;
 523                     tux.input.right = DOWN;
 524                   } else if(event.jhat.value == SDL_HAT_CENTERED) {
 525                     tux.input.left = UP;
 526                     tux.input.right = UP;
 527                     tux.input.up = UP;
 528                     tux.input.down = UP;
 529                   }
 530                   break;
 531
 532                 case SDL_JOYBUTTONDOWN:
 533                   if (event.jbutton.button == joystick_keymap.a_button)
 534                     tux.input.up = DOWN;
 535                   else if (event.jbutton.button == joystick_keymap.b_button)
 536                     tux.input.fire = DOWN;
 537                   else if (event.jbutton.button == joystick_keymap.start_button)
 538                     on_escape_press();
 539                   break;
 540                 case SDL_JOYBUTTONUP:
 541                   if (event.jbutton.button == joystick_keymap.a_button)
 542                     tux.input.up = UP;
 543                   else if (event.jbutton.button == joystick_keymap.b_button)
 544                     tux.input.fire = UP;
 545                   break;
 546
 547                 default:
 548                   break;
 549                 }  /* switch */
 550             }
 551         } /* while */
 552     }
 553 }
 554
 555 void
 556 GameSession::check_end_conditions()
 557 {
 558   Player* tux = currentsector->player;
 559
 560   /* End of level? */
 561   Tile* endtile = collision_goal(tux->base);
 562
 563   if(end_sequence && !endsequence_timer.check())
 564     {
 565       exit_status = ES_LEVEL_FINISHED;
 566       global_stats += last_swap_stats;  // add swap points stats
 567       return;
 568     }
 569   else if(end_sequence == ENDSEQUENCE_RUNNING && endtile && endtile->data >= 1)
 570     {
 571       end_sequence = ENDSEQUENCE_WAITING;
 572     }
 573   else if(!end_sequence && endtile && endtile->data == 0)
 574     {
 575       end_sequence = ENDSEQUENCE_RUNNING;
 576       endsequence_timer.start(7000); // 5 seconds until we finish the map
 577       last_x_pos = -1;
 578       SoundManager::get()->play_music(level_end_song, 0);
 579       tux->invincible_timer.start(7000); //FIXME: Implement a winning timer for the end sequence (with special winning animation etc.)
 580
 581       // add left time to stats
 582       global_stats.set_points(TIME_NEEDED_STAT, time_left.get_gone() / 1000);
 583
 584       random_timer.start(200);  // start 1st firework
 585     }
 586   else if (!end_sequence && tux->is_dead())
 587     {
 588       player_status.bonus = PlayerStatus::NO_BONUS;
 589
 590       if (player_status.lives < 0)
 591         { // No more lives!?
 592           exit_status = ES_GAME_OVER;
 593         }
 594       else
 595         { // Still has lives, so reset Tux to the levelstart
 596           restart_level();
 597         }
 598
 599       return;
 600     }
 601 }
 602
 603 void
 604 GameSession::action(double frame_ratio)
 605 {
 606   if (exit_status == ES_NONE && !currentsector->player->growing_timer.check())
 607     {
 608       // Update Tux and the World
 609       currentsector->action(frame_ratio);
 610     }
 611
 612   // respawning in new sector?
 613   if(newsector != "" && newspawnpoint != "") {
 614     Sector* sector = level->get_sector(newsector);
 615     currentsector = sector;
 616     currentsector->activate(newspawnpoint);
 617     currentsector->play_music(LEVEL_MUSIC);
 618     newsector = newspawnpoint = "";
 619   }
 620
 621   // on end sequence make a few fireworks
 622   if(end_sequence == ENDSEQUENCE_RUNNING && !random_timer.check() &&
 623      currentsector->end_sequence_animation() == FIREWORKS_ENDSEQ_ANIM)
 624     {
 625     Vector epicenter = currentsector->camera->get_translation();
 626     epicenter.x += screen->w * ((float)rand() / RAND_MAX);
 627     epicenter.y += (screen->h/2) * ((float)rand() / RAND_MAX);
 628
 629     int red = rand() % 255;  // calculate firework color
 630     int green = rand() % red;
 631     currentsector->add_particles(epicenter, Vector(1.4,1.4), Vector(0,0),
 632                                  45, Color(red,green,0), 3, 1300);
 633
 634     SoundManager::get()->play_sound(IDToSound(SND_FIREWORKS));
 635     random_timer.start(rand() % 400 + 600);  // next firework
 636     }
 637 }
 638
 639 void
 640 GameSession::draw()
 641 {
 642   currentsector->draw(*context);
 643   drawstatus(*context);
 644
 645   if(game_pause)
 646     {
 647       int x = screen->h / 20;
 648       for(int i = 0; i < x; ++i)
 649         {
 650           context->draw_filled_rect(
 651               Vector(i % 2 ? (pause_menu_frame * i)%screen->w :
 652                 -((pause_menu_frame * i)%screen->w)
 653                 ,(i*20+pause_menu_frame)%screen->h),
 654               Vector(screen->w,10),
 655               Color(20,20,20, rand() % 20 + 1), LAYER_FOREGROUND1+1);
 656         }
 657       context->draw_filled_rect(
 658           Vector(0,0), Vector(screen->w, screen->h),
 659           Color(rand() % 50, rand() % 50, rand() % 50, 128), LAYER_FOREGROUND1);
 660       context->draw_text(blue_text, _("PAUSE - Press 'P' To Play"),
 661           Vector(screen->w/2, 230), CENTER_ALLIGN, LAYER_FOREGROUND1+2);
 662
 663       char str1[60];
 664       char str2[124];
 665       sprintf(str1, _("Playing: "));
 666       sprintf(str2, level->name.c_str());
 667
 668       context->draw_text(blue_text, str1,
 669           Vector((screen->w - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2, 340),
 670           LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 671       context->draw_text(white_text, str2,
 672           Vector(((screen->w - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2)+blue_text->get_text_width(str1), 340),
 673           LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 674     }
 675
 676   if(Menu::current())
 677     {
 678       Menu::current()->draw(*context);
 679       mouse_cursor->draw(*context);
 680     }
 681
 682   context->do_drawing();
 683 }
 684
 685 void
 686 GameSession::process_menu()
 687 {
 688   Menu* menu = Menu::current();
 689   if(menu)
 690     {
 691       menu->action();
 692
 693       if(menu == game_menu)
 694         {
 695           switch (game_menu->check())
 696             {
 697             case MNID_CONTINUE:
 698               Ticks::pause_stop();
 699               break;
 700             case MNID_ABORTLEVEL:
 701               Ticks::pause_stop();
 702               exit_status = ES_LEVEL_ABORT;
 703               break;
 704             }
 705         }
 706       else if(menu == options_menu)
 707         {
 708           process_options_menu();
 709         }
 710       else if(menu == load_game_menu )
 711         {
 712           process_load_game_menu();
 713         }
 714     }
 715 }
 716
 717 GameSession::ExitStatus
 718 GameSession::run()
 719 {
 720   Menu::set_current(0);
 721   current_ = this;
 722
 723   int fps_cnt = 0;
 724
 725   frame_rate.start();
 726
 727   // Eat unneeded events
 728   SDL_Event event;
 729   while (SDL_PollEvent(&event)) {}
 730
 731   draw();
 732
 733   while (exit_status == ES_NONE)
 734     {
 735       /* Calculate the movement-factor */
 736       double frame_ratio = frame_rate.get();
 737
 738       if(!frame_timer.check())
 739         {
 740           frame_timer.start(25);
 741           ++global_frame_counter;
 742         }
 743
 744       /* Handle events: */
 745       currentsector->player->input.old_fire
 746         = currentsector->player->input.fire;
 747
 748       process_events();
 749       process_menu();
 750
 751       // Update the world state and all objects in the world
 752       // Do that with a constante time-delta so that the game will run
 753       // determistic and not different on different machines
 754       if(!game_pause && !Menu::current())
 755         {
 756           // Update the world
 757           check_end_conditions();
 758           if (end_sequence == ENDSEQUENCE_RUNNING)
 759              action(frame_ratio/2);
 760           else if(end_sequence == NO_ENDSEQUENCE)
 761              action(frame_ratio);
 762         }
 763       else
 764         {
 765           ++pause_menu_frame;
 766           SDL_Delay(50);
 767         }
 768
 769       draw();
 770
 771       /* Time stops in pause mode */
 772       if(game_pause || Menu::current())
 773         {
 774           continue;
 775         }
 776
 777       frame_rate.update();
 778
 779       /* Handle time: */
 780       if (!time_left.check() && currentsector->player->dying == DYING_NOT
 781               && !end_sequence)
 782         currentsector->player->kill(Player::KILL);
 783
 784       /* Handle music: */
 785       if(currentsector->player->invincible_timer.check() && !end_sequence)
 786         {
 787           currentsector->play_music(HERRING_MUSIC);
 788         }
 789       /* are we low on time ? */
 790       else if (time_left.get_left() < TIME_WARNING && !end_sequence)
 791         {
 792           currentsector->play_music(HURRYUP_MUSIC);
 793         }
 794       /* or just normal music? */
 795       else if(currentsector->get_music_type() != LEVEL_MUSIC && !end_sequence)
 796         {
 797           currentsector->play_music(LEVEL_MUSIC);
 798         }
 799
 800       /* Calculate frames per second */
 801       if(show_fps)
 802         {
 803           ++fps_cnt;
 804           fps_fps = (1000.0 / (float)fps_timer.get_gone()) * (float)fps_cnt;
 805
 806           if(!fps_timer.check())
 807             {
 808               fps_timer.start(1000);
 809               fps_cnt = 0;
 810             }
 811         }
 812     }
 813
 814   return exit_status;
 815 }
 816
 817 void
 818 GameSession::respawn(const std::string& sector, const std::string& spawnpoint)
 819 {
 820   newsector = sector;
 821   newspawnpoint = spawnpoint;
 822 }
 823
 824 /* Bounce a brick: */
 825 void bumpbrick(float x, float y)
 826 {
 827   Sector::current()->add_bouncy_brick(Vector(((int)(x + 1) / 32) * 32,
 828                          (int)(y / 32) * 32));
 829
 830   SoundManager::get()->play_sound(IDToSound(SND_BRICK), Vector(x, y), Sector::current()->player->get_pos());
 831 }
 832
 833 /* (Status): */
 834 void
 835 GameSession::drawstatus(DrawingContext& context)
 836 {
 837   char str[60];
 838
 839   snprintf(str, 60, " %d", global_stats.get_points(SCORE_STAT));
 840   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
 841   context.draw_text(gold_text, str, Vector(96, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
 842
 843   if(st_gl_mode == ST_GL_TEST)
 844     {
 845       context.draw_text(white_text, _("Press ESC To Return"), Vector(0,20),
 846           LEFT_ALLIGN, LAYER_FOREGROUND1);
 847     }
 848
 849   if(!time_left.check()) {
 850     context.draw_text(white_text, _("TIME's UP"), Vector(screen->w/2, 0),
 851         CENTER_ALLIGN, LAYER_FOREGROUND1);
 852   } else if (time_left.get_left() > TIME_WARNING || (global_frame_counter % 10) < 5) {
 853     sprintf(str, " %d", time_left.get_left() / 1000 );
 854     context.draw_text(white_text, _("TIME"),
 855         Vector(screen->w/2, 0), CENTER_ALLIGN, LAYER_FOREGROUND1);
 856     context.draw_text(gold_text, str,
 857         Vector(screen->w/2 + 4*16, 0), CENTER_ALLIGN, LAYER_FOREGROUND1);
 858   }
 859
 860   sprintf(str, " %d", player_status.distros);
 861   context.draw_text(white_text, _("COINS"),
 862       Vector(screen->w - white_text->get_text_width(_("COINS"))-white_text->get_text_width("   99"), 0),
 863         LEFT_ALLIGN, LAYER_FOREGROUND1);
 864   context.draw_text(gold_text, str,
 865       Vector(screen->w - gold_text->get_text_width(" 99"), 0),LEFT_ALLIGN, LAYER_FOREGROUND1);
 866
 867   if (player_status.lives >= 5)
 868     {
 869       sprintf(str, "%dx", player_status.lives);
 870       float x = screen->w - gold_text->get_text_width(str) - tux_life->w;
 871       context.draw_text(gold_text, str, Vector(x, 20), LEFT_ALLIGN, LAYER_FOREGROUND1);
 872       context.draw_surface(tux_life, Vector(screen->w - 16, 20),
 873           LAYER_FOREGROUND1);
 874     }
 875   else
 876     {
 877       for(int i= 0; i < player_status.lives; ++i)
 878         context.draw_surface(tux_life,
 879             Vector(screen->w - tux_life->w*4 +(tux_life->w*i), 20),
 880             LAYER_FOREGROUND1);
 881     }
 882
 883   context.draw_text(white_text, _("LIVES"),
 884       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 20),
 885       LEFT_ALLIGN, LAYER_FOREGROUND1);
 886
 887   if(show_fps)
 888     {
 889       sprintf(str, "%2.1f", fps_fps);
 890       context.draw_text(white_text, "FPS",
 891           Vector(screen->w - white_text->get_text_width("FPS     "), 40),
 892           LEFT_ALLIGN, LAYER_FOREGROUND1);
 893       context.draw_text(gold_text, str,
 894           Vector(screen->w-4*16, 40), LEFT_ALLIGN, LAYER_FOREGROUND1);
 895     }
 896 }
 897
 898 void
 899 GameSession::drawresultscreen(void)
 900 {
 901   char str[80];
 902
 903   DrawingContext context;
 904   currentsector->background->draw(context);
 905
 906   context.draw_text(blue_text, _("Result:"), Vector(screen->w/2, 200),
 907       CENTER_ALLIGN, LAYER_FOREGROUND1);
 908
 909   sprintf(str, _("SCORE: %d"), global_stats.get_points(SCORE_STAT));
 910   context.draw_text(gold_text, str, Vector(screen->w/2, 224), CENTER_ALLIGN, LAYER_FOREGROUND1);
 911
 912   sprintf(str, _("COINS: %d"), player_status.distros);
 913   context.draw_text(gold_text, str, Vector(screen->w/2, 256), CENTER_ALLIGN, LAYER_FOREGROUND1);
 914
 915   context.do_drawing();
 916
 917   SDL_Event event;
 918   wait_for_event(event,2000,5000,true);
 919 }
 920
 921 std::string slotinfo(int slot)
 922 {
 923   std::string tmp;
 924   std::string slotfile;
 925   std::string title;
 926   std::stringstream stream;
 927   stream << slot;
 928   slotfile = st_save_dir + "/slot" + stream.str() + ".stsg";
 929
 930   lisp_object_t* savegame = lisp_read_from_file(slotfile.c_str());
 931   if (savegame)
 932     {
 933       LispReader reader(lisp_cdr(savegame));
 934       reader.read_string("title", title);
 935       lisp_free(savegame);
 936     }
 937
 938   if (access(slotfile.c_str(), F_OK) == 0)
 939     {
 940       if (!title.empty())
 941         tmp = "Slot " + stream.str() + " - " + title;
 942       else
 943         tmp = "Slot " + stream.str() + " - Savegame";
 944     }
 945   else
 946     tmp = std::string(_("Slot")) + " " + stream.str() + " - " + std::string(_("Free"));
 947
 948   return tmp;
 949 }
 950
 951 bool process_load_game_menu()
 952 {
 953   int slot = load_game_menu->check();
 954
 955   if(slot != -1 && load_game_menu->get_item_by_id(slot).kind == MN_ACTION)
 956     {
 957       std::stringstream stream;
 958       stream << slot;
 959       std::string slotfile = st_save_dir + "/slot" + stream.str() + ".stsg";
 960
 961       if (access(slotfile.c_str(), F_OK) != 0)
 962         {
 963           draw_intro();
 964         }
 965
 966       // shrink_fade(Point((screen->w/2),(screen->h/2)), 1000);
 967       fadeout(256);
 968
 969       DrawingContext context;
 970       context.draw_text(white_text, "Loading...",
 971                         Vector(screen->w/2, screen->h/2), CENTER_ALLIGN, LAYER_FOREGROUND1);
 972       context.do_drawing();
 973
 974       WorldMapNS::WorldMap worldmap;
 975
 976       worldmap.set_map_filename("icyisland.stwm");
 977       // Load the game or at least set the savegame_file variable
 978       worldmap.loadgame(slotfile);
 979
 980       worldmap.display();
 981
 982       Menu::set_current(main_menu);
 983
 984       Ticks::pause_stop();
 985       return true;
 986     }
 987   else
 988     {
 989       return false;
 990     }
 991 }