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.up, UP);
 252       tux.key_event((SDLKey)keymap.down, UP);
 253       tux.key_event((SDLKey)keymap.left, UP);
 254       tux.key_event((SDLKey)keymap.right, UP);
 255       tux.key_event((SDLKey)keymap.jump, UP);
 256       tux.key_event((SDLKey)keymap.power, UP);
 257
 258       Menu::set_current(game_menu);
 259       Ticks::pause_start();
 260     }
 261 }
 262
 263 void
 264 GameSession::process_events()
 265 {
 266   if (end_sequence != NO_ENDSEQUENCE)
 267     {
 268       Player& tux = *currentsector->player;
 269
 270       tux.input.fire  = UP;
 271       tux.input.left  = UP;
 272       tux.input.right = DOWN;
 273       tux.input.down  = UP;
 274
 275       if (int(last_x_pos) == int(tux.base.x))
 276         tux.input.up    = DOWN;
 277       else
 278         tux.input.up    = UP;
 279
 280       last_x_pos = tux.base.x;
 281
 282       SDL_Event event;
 283       while (SDL_PollEvent(&event))
 284         {
 285           /* Check for menu-events, if the menu is shown */
 286           if (Menu::current())
 287             {
 288               Menu::current()->event(event);
 289               if(!Menu::current())
 290               Ticks::pause_stop();
 291             }
 292
 293           switch(event.type)
 294             {
 295             case SDL_QUIT:        /* Quit event - quit: */
 296               Termination::abort("Received window close", "");
 297               break;
 298
 299             case SDL_KEYDOWN:     /* A keypress! */
 300               {
 301                 SDLKey key = event.key.keysym.sym;
 302
 303                 switch(key)
 304                   {
 305                   case SDLK_ESCAPE:    /* Escape: Open/Close the menu: */
 306                     on_escape_press();
 307                     break;
 308                   default:
 309                     break;
 310                   }
 311               }
 312
 313             case SDL_JOYBUTTONDOWN:
 314               if (event.jbutton.button == joystick_keymap.start_button)
 315                 on_escape_press();
 316               break;
 317             }
 318         }
 319     }
 320   else // normal mode
 321     {
 322       if(!Menu::current() && !game_pause)
 323         Ticks::pause_stop();
 324
 325       SDL_Event event;
 326       while (SDL_PollEvent(&event))
 327         {
 328           /* Check for menu-events, if the menu is shown */
 329           if (Menu::current())
 330             {
 331               Menu::current()->event(event);
 332               if(!Menu::current())
 333                 Ticks::pause_stop();
 334             }
 335           else
 336             {
 337               Player& tux = *currentsector->player;
 338
 339               switch(event.type)
 340                 {
 341                 case SDL_QUIT:        /* Quit event - quit: */
 342                   Termination::abort("Received window close", "");
 343                   break;
 344
 345                 case SDL_KEYDOWN:     /* A keypress! */
 346                   {
 347                     SDLKey key = event.key.keysym.sym;
 348
 349                     if(tux.key_event(key,DOWN))
 350                       break;
 351
 352                     switch(key)
 353                       {
 354                       case SDLK_ESCAPE:    /* Escape: Open/Close the menu: */
 355                         on_escape_press();
 356                         break;
 357                       default:
 358                         break;
 359                       }
 360                   }
 361                   break;
 362                 case SDL_KEYUP:      /* A keyrelease! */
 363                   {
 364                     SDLKey key = event.key.keysym.sym;
 365
 366                     if(tux.key_event(key, UP))
 367                       break;
 368
 369                     switch(key)
 370                       {
 371                       case SDLK_a:
 372                         if(debug_mode)
 373                         {
 374                           char buf[160];
 375                           snprintf(buf, sizeof(buf), "P: %4.1f,%4.1f",
 376                               tux.base.x, tux.base.y);
 377                           context->draw_text(white_text, buf,
 378                               Vector(0, screen->h - white_text->get_height()),
 379                               LEFT_ALLIGN, LAYER_FOREGROUND1);
 380                           context->do_drawing();
 381                           SDL_Delay(1000);
 382                         }
 383                         break;
 384                       case SDLK_p:
 385                         if(!Menu::current())
 386                           {
 387                           // "lifeup" cheat activates pause cause of the 'p'
 388                           // so work around to ignore it
 389                             if(compare_last(last_keys, "lifeu"))
 390                               break;
 391
 392                             if(game_pause)
 393                               {
 394                                 game_pause = false;
 395                                 Ticks::pause_stop();
 396                               }
 397                             else
 398                               {
 399                                 game_pause = true;
 400                                 Ticks::pause_start();
 401                               }
 402                           }
 403                         break;
 404                       default:
 405                         break;
 406                       }
 407                   }
 408
 409                         /* Check if chacrater is ASCII */
 410                         char ch[2];
 411                         if((event.key.keysym.unicode & 0xFF80) == 0)
 412                           {
 413                           ch[0] = event.key.keysym.unicode & 0x7F;
 414                           ch[1] = '\0';
 415                           }
 416                         last_keys.append(ch);  // add to cheat keys
 417
 418                         // Cheating words (the goal of this is really for debugging,
 419                         // but could be used for some cheating, nothing wrong with that)
 420                         if(compare_last(last_keys, "grow"))
 421                           {
 422                           tux.grow(false);
 423                           last_keys.clear();
 424                           }
 425                         if(compare_last(last_keys, "fire"))
 426                           {
 427                           tux.grow(false);
 428                           tux.got_power = tux.FIRE_POWER;
 429                           last_keys.clear();
 430                           }
 431                         if(compare_last(last_keys, "ice"))
 432                           {
 433                           tux.grow(false);
 434                           tux.got_power = tux.ICE_POWER;
 435                           last_keys.clear();
 436                           }
 437                         if(compare_last(last_keys, "lifeup"))
 438                           {
 439                           player_status.lives++;
 440                           last_keys.clear();
 441                           }
 442                         if(compare_last(last_keys, "lifedown"))
 443                           {
 444                           player_status.lives--;
 445                           last_keys.clear();
 446                           }
 447                         if(compare_last(last_keys, "grease"))
 448                           {
 449                           tux.physic.set_velocity_x(tux.physic.get_velocity_x()*3);
 450                           last_keys.clear();
 451                           }
 452                         if(compare_last(last_keys, "invincible"))
 453                           {    // be invincle for the rest of the level
 454                           tux.invincible_timer.start(time_left.get_left());
 455                           last_keys.clear();
 456                           }
 457                         if(compare_last(last_keys, "shrink"))
 458                           {    // remove powerups
 459                           tux.kill(tux.SHRINK);
 460                           last_keys.clear();
 461                           }
 462                         if(compare_last(last_keys, "kill"))
 463                           {    // kill Tux, but without losing a life
 464                           player_status.lives++;
 465                           tux.kill(tux.KILL);
 466                           last_keys.clear();
 467                           }
 468                         if(compare_last(last_keys, "hover"))
 469                           {    // toggle hover ability on/off
 470                           tux.enable_hover = !tux.enable_hover;
 471                           last_keys.clear();
 472                           }
 473                         if(compare_last(last_keys, "gotoend"))
 474                           {    // goes to the end of the level
 475                           tux.base.x = (currentsector->solids->get_width()*32) - (screen->w*2);
 476                           tux.base.y = 0;
 477                           currentsector->camera->reset(Vector(tux.base.x, tux.base.y));
 478                           last_keys.clear();
 479                           }
 480                   break;
 481
 482                 case SDL_JOYAXISMOTION:
 483                   if (event.jaxis.axis == joystick_keymap.x_axis)
 484                     {
 485                       if (event.jaxis.value < -joystick_keymap.dead_zone)
 486                         {
 487                           tux.input.left  = DOWN;
 488                           tux.input.right = UP;
 489                         }
 490                       else if (event.jaxis.value > joystick_keymap.dead_zone)
 491                         {
 492                           tux.input.left  = UP;
 493                           tux.input.right = DOWN;
 494                         }
 495                       else
 496                         {
 497                           tux.input.left  = DOWN;
 498                           tux.input.right = DOWN;
 499                         }
 500                     }
 501                   else if (event.jaxis.axis == joystick_keymap.y_axis)
 502                     {
 503                       if (event.jaxis.value > joystick_keymap.dead_zone)
 504                         {
 505                         tux.input.up = DOWN;
 506                         tux.input.down = UP;
 507                         }
 508                       else if (event.jaxis.value < -joystick_keymap.dead_zone)
 509                         {
 510                         tux.input.up = UP;
 511                         tux.input.down = DOWN;
 512                         }
 513                       else
 514                         {
 515                         tux.input.up = DOWN;
 516                         tux.input.down = DOWN;
 517                         }
 518                     }
 519                   break;
 520
 521                 case SDL_JOYHATMOTION:
 522                   if(event.jhat.value & SDL_HAT_UP) {
 523                     tux.input.up = DOWN;
 524                     tux.input.down = UP;
 525                   } else if(event.jhat.value & SDL_HAT_DOWN) {
 526                     tux.input.up = UP;
 527                     tux.input.down = DOWN;
 528                   } else if(event.jhat.value & SDL_HAT_LEFT) {
 529                     tux.input.left = DOWN;
 530                     tux.input.right = UP;
 531                   } else if(event.jhat.value & SDL_HAT_RIGHT) {
 532                     tux.input.left = UP;
 533                     tux.input.right = DOWN;
 534                   } else if(event.jhat.value == SDL_HAT_CENTERED) {
 535                     tux.input.left = UP;
 536                     tux.input.right = UP;
 537                     tux.input.up = UP;
 538                     tux.input.down = UP;
 539                   }
 540                   break;
 541
 542                 case SDL_JOYBUTTONDOWN:
 543                   if (event.jbutton.button == joystick_keymap.a_button)
 544                     tux.input.jump = DOWN;
 545                   else if (event.jbutton.button == joystick_keymap.b_button)
 546                     tux.input.fire = DOWN;
 547                   else if (event.jbutton.button == joystick_keymap.start_button)
 548                     on_escape_press();
 549                   break;
 550                 case SDL_JOYBUTTONUP:
 551                   if (event.jbutton.button == joystick_keymap.a_button)
 552                     tux.input.jump = UP;
 553                   else if (event.jbutton.button == joystick_keymap.b_button)
 554                     tux.input.fire = UP;
 555                   break;
 556
 557                 default:
 558                   break;
 559                 }  /* switch */
 560             }
 561         } /* while */
 562     }
 563 }
 564
 565 void
 566 GameSession::check_end_conditions()
 567 {
 568   Player* tux = currentsector->player;
 569
 570   /* End of level? */
 571   Tile* endtile = collision_goal(tux->base);
 572
 573   if(end_sequence && !endsequence_timer.check())
 574     {
 575       exit_status = ES_LEVEL_FINISHED;
 576       global_stats += last_swap_stats;  // add swap points stats
 577       return;
 578     }
 579   else if(end_sequence == ENDSEQUENCE_RUNNING && endtile && endtile->data >= 1)
 580     {
 581       end_sequence = ENDSEQUENCE_WAITING;
 582     }
 583   else if(!end_sequence && endtile && endtile->data == 0)
 584     {
 585       end_sequence = ENDSEQUENCE_RUNNING;
 586       endsequence_timer.start(7000); // 5 seconds until we finish the map
 587       last_x_pos = -1;
 588       SoundManager::get()->play_music(level_end_song, 0);
 589       tux->invincible_timer.start(7000); //FIXME: Implement a winning timer for the end sequence (with special winning animation etc.)
 590
 591       // add left time to stats
 592       global_stats.set_points(TIME_NEEDED_STAT, time_left.get_gone() / 1000);
 593
 594       random_timer.start(200);  // start 1st firework
 595     }
 596   else if (!end_sequence && tux->is_dead())
 597     {
 598       player_status.bonus = PlayerStatus::NO_BONUS;
 599
 600       if (player_status.lives < 0)
 601         { // No more lives!?
 602           exit_status = ES_GAME_OVER;
 603         }
 604       else
 605         { // Still has lives, so reset Tux to the levelstart
 606           restart_level();
 607         }
 608
 609       return;
 610     }
 611 }
 612
 613 void
 614 GameSession::action(double frame_ratio)
 615 {
 616   if (exit_status == ES_NONE && !currentsector->player->growing_timer.check())
 617     {
 618       // Update Tux and the World
 619       currentsector->action(frame_ratio);
 620     }
 621
 622   // respawning in new sector?
 623   if(newsector != "" && newspawnpoint != "") {
 624     Sector* sector = level->get_sector(newsector);
 625     currentsector = sector;
 626     currentsector->activate(newspawnpoint);
 627     currentsector->play_music(LEVEL_MUSIC);
 628     newsector = newspawnpoint = "";
 629   }
 630
 631   // on end sequence make a few fireworks
 632   if(end_sequence == ENDSEQUENCE_RUNNING && !random_timer.check() &&
 633      currentsector->end_sequence_animation() == FIREWORKS_ENDSEQ_ANIM)
 634     {
 635     Vector epicenter = currentsector->camera->get_translation();
 636     epicenter.x += screen->w * ((float)rand() / RAND_MAX);
 637     epicenter.y += (screen->h/2) * ((float)rand() / RAND_MAX);
 638
 639     int red = rand() % 255;  // calculate firework color
 640     int green = rand() % red;
 641     currentsector->add_particles(epicenter, Vector(1.4,1.4), Vector(0,0),
 642                                  45, Color(red,green,0), 3, 1300);
 643
 644     SoundManager::get()->play_sound(IDToSound(SND_FIREWORKS));
 645     random_timer.start(rand() % 400 + 600);  // next firework
 646     }
 647 }
 648
 649 void
 650 GameSession::draw()
 651 {
 652   currentsector->draw(*context);
 653   drawstatus(*context);
 654
 655   if(game_pause)
 656     {
 657       int x = screen->h / 20;
 658       for(int i = 0; i < x; ++i)
 659         {
 660           context->draw_filled_rect(
 661               Vector(i % 2 ? (pause_menu_frame * i)%screen->w :
 662                 -((pause_menu_frame * i)%screen->w)
 663                 ,(i*20+pause_menu_frame)%screen->h),
 664               Vector(screen->w,10),
 665               Color(20,20,20, rand() % 20 + 1), LAYER_FOREGROUND1+1);
 666         }
 667       context->draw_filled_rect(
 668           Vector(0,0), Vector(screen->w, screen->h),
 669           Color(rand() % 50, rand() % 50, rand() % 50, 128), LAYER_FOREGROUND1);
 670       context->draw_text(blue_text, _("PAUSE - Press 'P' To Play"),
 671           Vector(screen->w/2, 230), CENTER_ALLIGN, LAYER_FOREGROUND1+2);
 672
 673       char str1[60];
 674       char str2[124];
 675       sprintf(str1, _("Playing: "));
 676       sprintf(str2, level->name.c_str());
 677
 678       context->draw_text(blue_text, str1,
 679           Vector((screen->w - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2, 340),
 680           LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 681       context->draw_text(white_text, str2,
 682           Vector(((screen->w - (blue_text->get_text_width(str1) + white_text->get_text_width(str2)))/2)+blue_text->get_text_width(str1), 340),
 683           LEFT_ALLIGN, LAYER_FOREGROUND1+2);
 684     }
 685
 686   if(Menu::current())
 687     {
 688       Menu::current()->draw(*context);
 689       mouse_cursor->draw(*context);
 690     }
 691
 692   context->do_drawing();
 693 }
 694
 695 void
 696 GameSession::process_menu()
 697 {
 698   Menu* menu = Menu::current();
 699   if(menu)
 700     {
 701       menu->action();
 702
 703       if(menu == game_menu)
 704         {
 705           switch (game_menu->check())
 706             {
 707             case MNID_CONTINUE:
 708               Ticks::pause_stop();
 709               break;
 710             case MNID_ABORTLEVEL:
 711               Ticks::pause_stop();
 712               exit_status = ES_LEVEL_ABORT;
 713               break;
 714             }
 715         }
 716       else if(menu == options_menu)
 717         {
 718           process_options_menu();
 719         }
 720       else if(menu == load_game_menu )
 721         {
 722           process_load_game_menu();
 723         }
 724     }
 725 }
 726
 727 GameSession::ExitStatus
 728 GameSession::run()
 729 {
 730   Menu::set_current(0);
 731   current_ = this;
 732
 733   int fps_cnt = 0;
 734
 735   frame_rate.start();
 736
 737   // Eat unneeded events
 738   SDL_Event event;
 739   while (SDL_PollEvent(&event)) {}
 740
 741   draw();
 742
 743   while (exit_status == ES_NONE)
 744     {
 745       /* Calculate the movement-factor */
 746       double frame_ratio = frame_rate.get();
 747
 748       if(!frame_timer.check())
 749         {
 750           frame_timer.start(25);
 751           ++global_frame_counter;
 752         }
 753
 754       /* Handle events: */
 755       currentsector->player->input.old_fire
 756         = currentsector->player->input.fire;
 757
 758       process_events();
 759       process_menu();
 760
 761       // Update the world state and all objects in the world
 762       // Do that with a constante time-delta so that the game will run
 763       // determistic and not different on different machines
 764       if(!game_pause && !Menu::current())
 765         {
 766           // Update the world
 767           check_end_conditions();
 768           if (end_sequence == ENDSEQUENCE_RUNNING)
 769              action(frame_ratio/2);
 770           else if(end_sequence == NO_ENDSEQUENCE)
 771              action(frame_ratio);
 772         }
 773       else
 774         {
 775           ++pause_menu_frame;
 776           SDL_Delay(50);
 777         }
 778
 779       draw();
 780
 781       /* Time stops in pause mode */
 782       if(game_pause || Menu::current())
 783         {
 784           continue;
 785         }
 786
 787       frame_rate.update();
 788
 789       /* Handle time: */
 790       if (!time_left.check() && currentsector->player->dying == DYING_NOT
 791               && !end_sequence)
 792         currentsector->player->kill(Player::KILL);
 793
 794       /* Handle music: */
 795       if(currentsector->player->invincible_timer.check() && !end_sequence)
 796         {
 797           currentsector->play_music(HERRING_MUSIC);
 798         }
 799       /* are we low on time ? */
 800       else if (time_left.get_left() < TIME_WARNING && !end_sequence)
 801         {
 802           currentsector->play_music(HURRYUP_MUSIC);
 803         }
 804       /* or just normal music? */
 805       else if(currentsector->get_music_type() != LEVEL_MUSIC && !end_sequence)
 806         {
 807           currentsector->play_music(LEVEL_MUSIC);
 808         }
 809
 810       /* Calculate frames per second */
 811       if(show_fps)
 812         {
 813           ++fps_cnt;
 814           fps_fps = (1000.0 / (float)fps_timer.get_gone()) * (float)fps_cnt;
 815
 816           if(!fps_timer.check())
 817             {
 818               fps_timer.start(1000);
 819               fps_cnt = 0;
 820             }
 821         }
 822     }
 823
 824   return exit_status;
 825 }
 826
 827 void
 828 GameSession::respawn(const std::string& sector, const std::string& spawnpoint)
 829 {
 830   newsector = sector;
 831   newspawnpoint = spawnpoint;
 832 }
 833
 834 /* Bounce a brick: */
 835 void bumpbrick(float x, float y)
 836 {
 837   Sector::current()->add_bouncy_brick(Vector(((int)(x + 1) / 32) * 32,
 838                          (int)(y / 32) * 32));
 839
 840   SoundManager::get()->play_sound(IDToSound(SND_BRICK), Vector(x, y), Sector::current()->player->get_pos());
 841 }
 842
 843 /* (Status): */
 844 void
 845 GameSession::drawstatus(DrawingContext& context)
 846 {
 847   char str[60];
 848
 849   snprintf(str, 60, " %d", global_stats.get_points(SCORE_STAT));
 850   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
 851   context.draw_text(gold_text, str, Vector(96, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
 852
 853   if(st_gl_mode == ST_GL_TEST)
 854     {
 855       context.draw_text(white_text, _("Press ESC To Return"), Vector(0,20),
 856           LEFT_ALLIGN, LAYER_FOREGROUND1);
 857     }
 858
 859   if(!time_left.check()) {
 860     context.draw_text(white_text, _("TIME's UP"), Vector(screen->w/2, 0),
 861         CENTER_ALLIGN, LAYER_FOREGROUND1);
 862   } else if (time_left.get_left() > TIME_WARNING || (global_frame_counter % 10) < 5) {
 863     sprintf(str, " %d", time_left.get_left() / 1000 );
 864     context.draw_text(white_text, _("TIME"),
 865         Vector(screen->w/2, 0), CENTER_ALLIGN, LAYER_FOREGROUND1);
 866     context.draw_text(gold_text, str,
 867         Vector(screen->w/2 + 4*16, 0), CENTER_ALLIGN, LAYER_FOREGROUND1);
 868   }
 869
 870   sprintf(str, " %d", player_status.distros);
 871   context.draw_text(white_text, _("COINS"),
 872       Vector(screen->w - white_text->get_text_width(_("COINS"))-white_text->get_text_width("   99"), 0),
 873         LEFT_ALLIGN, LAYER_FOREGROUND1);
 874   context.draw_text(gold_text, str,
 875       Vector(screen->w - gold_text->get_text_width(" 99"), 0),LEFT_ALLIGN, LAYER_FOREGROUND1);
 876
 877   if (player_status.lives >= 5)
 878     {
 879       sprintf(str, "%dx", player_status.lives);
 880       float x = screen->w - gold_text->get_text_width(str) - tux_life->w;
 881       context.draw_text(gold_text, str, Vector(x, 20), LEFT_ALLIGN, LAYER_FOREGROUND1);
 882       context.draw_surface(tux_life, Vector(screen->w - 16, 20),
 883           LAYER_FOREGROUND1);
 884     }
 885   else
 886     {
 887       for(int i= 0; i < player_status.lives; ++i)
 888         context.draw_surface(tux_life,
 889             Vector(screen->w - tux_life->w*4 +(tux_life->w*i), 20),
 890             LAYER_FOREGROUND1);
 891     }
 892
 893   context.draw_text(white_text, _("LIVES"),
 894       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 20),
 895       LEFT_ALLIGN, LAYER_FOREGROUND1);
 896
 897   if(show_fps)
 898     {
 899       sprintf(str, "%2.1f", fps_fps);
 900       context.draw_text(white_text, "FPS",
 901           Vector(screen->w - white_text->get_text_width("FPS     "), 40),
 902           LEFT_ALLIGN, LAYER_FOREGROUND1);
 903       context.draw_text(gold_text, str,
 904           Vector(screen->w-4*16, 40), LEFT_ALLIGN, LAYER_FOREGROUND1);
 905     }
 906 }
 907
 908 void
 909 GameSession::drawresultscreen(void)
 910 {
 911   char str[80];
 912
 913   DrawingContext context;
 914   currentsector->background->draw(context);
 915
 916   context.draw_text(blue_text, _("Result:"), Vector(screen->w/2, 200),
 917       CENTER_ALLIGN, LAYER_FOREGROUND1);
 918
 919   sprintf(str, _("SCORE: %d"), global_stats.get_points(SCORE_STAT));
 920   context.draw_text(gold_text, str, Vector(screen->w/2, 224), CENTER_ALLIGN, LAYER_FOREGROUND1);
 921
 922   sprintf(str, _("COINS: %d"), player_status.distros);
 923   context.draw_text(gold_text, str, Vector(screen->w/2, 256), CENTER_ALLIGN, LAYER_FOREGROUND1);
 924
 925   context.do_drawing();
 926
 927   SDL_Event event;
 928   wait_for_event(event,2000,5000,true);
 929 }
 930
 931 std::string slotinfo(int slot)
 932 {
 933   std::string tmp;
 934   std::string slotfile;
 935   std::string title;
 936   std::stringstream stream;
 937   stream << slot;
 938   slotfile = st_save_dir + "/slot" + stream.str() + ".stsg";
 939
 940   lisp_object_t* savegame = lisp_read_from_file(slotfile.c_str());
 941   if (savegame)
 942     {
 943       LispReader reader(lisp_cdr(savegame));
 944       reader.read_string("title", title);
 945       lisp_free(savegame);
 946     }
 947
 948   if (access(slotfile.c_str(), F_OK) == 0)
 949     {
 950       if (!title.empty())
 951         tmp = "Slot " + stream.str() + " - " + title;
 952       else
 953         tmp = "Slot " + stream.str() + " - Savegame";
 954     }
 955   else
 956     tmp = std::string(_("Slot")) + " " + stream.str() + " - " + std::string(_("Free"));
 957
 958   return tmp;
 959 }
 960
 961 bool process_load_game_menu()
 962 {
 963   int slot = load_game_menu->check();
 964
 965   if(slot != -1 && load_game_menu->get_item_by_id(slot).kind == MN_ACTION)
 966     {
 967       std::stringstream stream;
 968       stream << slot;
 969       std::string slotfile = st_save_dir + "/slot" + stream.str() + ".stsg";
 970
 971       if (access(slotfile.c_str(), F_OK) != 0)
 972         {
 973           shrink_fade(Vector(screen->w/2,screen->h/2), 600);
 974           draw_intro();
 975         }
 976
 977       fadeout(256);
 978       DrawingContext context;
 979       context.draw_text(white_text, "Loading...",
 980                         Vector(screen->w/2, screen->h/2), CENTER_ALLIGN, LAYER_FOREGROUND1);
 981       context.do_drawing();
 982
 983       WorldMapNS::WorldMap worldmap;
 984
 985       worldmap.set_map_filename("icyisland.stwm");
 986       // Load the game or at least set the savegame_file variable
 987       worldmap.loadgame(slotfile);
 988
 989       worldmap.display();
 990
 991       Menu::set_current(main_menu);
 992
 993       Ticks::pause_stop();
 994       return true;
 995     }
 996   else
 997     {
 998       return false;
 999     }
1000 }