src/CGraphics.cpp

   1 /*
   2 Copyright (C) 2004-2011 Parallel Realities
   3 Copyright (C) 2011-2015 Perpendicular Dimensions
   4
   5 This program is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU General Public License
   7 as published by the Free Software Foundation; either version 2
   8 of the License, or (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13
  14 See the GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 */
  21
  22 #include "headers.h"
  23
  24 void SDL_SetAlpha(SDL_Surface *surface, uint8_t value) {
  25         SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_BLEND);
  26         SDL_SetSurfaceAlphaMod(surface, value);
  27 }
  28
  29 Graphics::Graphics()
  30 {
  31         for (int i = 0 ; i < MAX_TILES ; i++)
  32         {
  33                 tile[i] = NULL;
  34         }
  35
  36         background = NULL;
  37         infoMessage = NULL;
  38
  39         fontSize = 0;
  40
  41         medalMessageTimer = 0;
  42         medalType = 0;
  43
  44         currentLoading = 0;
  45
  46         screenShotNumber = 0;
  47         takeRandomScreenShots = false;
  48
  49         waterAnim = 201;
  50         slimeAnim = 208;
  51         lavaAnim = 215;
  52 }
  53
  54 void Graphics::free()
  55 {
  56         debug(("graphics.free: Background\n"));
  57         if (background != NULL)
  58         {
  59                 SDL_FreeSurface(background);
  60         }
  61         debug(("graphics.free: Background - Done\n"));
  62
  63         background = NULL;
  64
  65         debug(("graphics.free: Tiles\n"));
  66         for (int i = 0 ; i < MAX_TILES ; i++)
  67         {
  68                 if (tile[i] != NULL)
  69                 {
  70                         SDL_FreeSurface(tile[i]);
  71                         tile[i] = NULL;
  72                 }
  73         }
  74         debug(("graphics.free: Tiles - Done\n"));
  75
  76         debug(("graphics.free: Sprites\n"));
  77         Sprite *sprite = (Sprite*)spriteList.getHead();
  78         while (sprite->next != NULL)
  79         {
  80                 sprite = (Sprite*)sprite->next;
  81                 //debug(("graphics.free: Sprites Sprite::Free - %s\n", sprite->name));
  82                 sprite->free();
  83         }
  84         debug(("graphics.free: Sprites Clear()\n"));
  85         spriteList.clear();
  86         debug(("graphics.free: Sprites - Done\n"));
  87 }
  88
  89 void Graphics::destroy()
  90 {
  91         free();
  92
  93         for (int i = 0 ; i < 5 ; i++)
  94         {
  95                 if (font[i])
  96                 {
  97                         TTF_CloseFont(font[i]);
  98                 }
  99         }
 100
 101         if (medalMessage != NULL)
 102         {
 103                 SDL_FreeSurface(medalMessage);
 104         }
 105
 106         if (fadeBlack)
 107         {
 108                 SDL_FreeSurface(fadeBlack);
 109         }
 110
 111         if (infoBar)
 112         {
 113                 SDL_FreeSurface(infoBar);
 114         }
 115
 116         for (int i = 0 ; i < 4 ; i++)
 117         {
 118                 if (medal[i] != NULL)
 119                 {
 120                         SDL_FreeSurface(medal[i]);
 121                         medal[i] = NULL;
 122                 }
 123         }
 124 }
 125
 126 void Graphics::registerEngine(Engine *engine)
 127 {
 128         this->engine = engine;
 129 }
 130
 131 void Graphics::mapColors()
 132 {
 133         red = SDL_MapRGB(screen->format, 0xff, 0x00, 0x00);
 134         yellow = SDL_MapRGB(screen->format, 0xff, 0xff, 0x00);
 135         green = SDL_MapRGB(screen->format, 0x00, 0xff, 0x00);
 136         darkGreen = SDL_MapRGB(screen->format, 0x00, 0x77, 0x00);
 137         skyBlue = SDL_MapRGB(screen->format, 0x66, 0x66, 0xff);
 138         blue = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
 139         cyan = SDL_MapRGB(screen->format, 0x00, 0x99, 0xff);
 140         white = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
 141         lightGrey = SDL_MapRGB(screen->format, 0xcc, 0xcc, 0xcc);
 142         grey = SDL_MapRGB(screen->format, 0x88, 0x88, 0x88);
 143         darkGrey = SDL_MapRGB(screen->format, 0x33, 0x33, 0x33);
 144         black = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 145
 146         fontForeground.r = fontForeground.g = fontForeground.b = 0xff;
 147         fontBackground.r = fontBackground.g = fontBackground.b = 0x00;
 148
 149         fadeBlack = alphaRect(640, 480, 0x00, 0x00, 0x00);
 150
 151         infoBar = alphaRect(640, 25, 0x00, 0x00, 0x00);
 152
 153         medalMessage = NULL;
 154 }
 155
 156 Sprite *Graphics::getSpriteHead()
 157 {
 158         return (Sprite*)spriteList.getHead();
 159 }
 160
 161 void Graphics::setTransparent(SDL_Surface *sprite)
 162 {
 163         SDL_SetColorKey(sprite, SDL_TRUE, SDL_MapRGB(sprite->format, 0, 0, 0));
 164 }
 165
 166 bool Graphics::canShowMedalMessage() const
 167 {
 168         return (medalMessageTimer <= 0);
 169 }
 170
 171 void Graphics::updateScreen()
 172 {
 173         if (medalMessageTimer > 0)
 174         {
 175                 int padding = 0;
 176
 177                 medalMessageTimer--;
 178
 179                 if (medalType >= 0)
 180                 {
 181                         padding = 18;
 182                 }
 183
 184                 drawRect(screen->w - (medalMessage->w + 5 + padding), 5, medalMessage->w + padding - 2, 20, grey, screen);
 185                 drawRect(screen->w - (medalMessage->w + 5 + padding - 1), 6, medalMessage->w + padding - 4, 18, black, screen);
 186                 blit(medalMessage, screen->w - (medalMessage->w + 5), 7, screen, false);
 187
 188                 if (medalType >= 0)
 189                 {
 190                         blit(medal[medalType], screen->w - (medalMessage->w + 5 + 16), 7, screen, false);
 191                 }
 192         }
 193
 194         SDL_UpdateTexture(texture, NULL, screen->pixels, screen->w * 4);
 195         SDL_RenderCopy(renderer, texture, NULL, NULL);
 196         SDL_RenderPresent(renderer);
 197
 198         if (takeRandomScreenShots)
 199         {
 200                 if ((Math::prand() % 500) == 0)
 201                 {
 202                         snprintf(screenshot, sizeof screenshot, "screenshots/screenshot%.3d.bmp", screenShotNumber);
 203                         SDL_SaveBMP(screen, screenshot);
 204                         screenShotNumber++;
 205                 }
 206
 207                 SDL_Delay(16);
 208         }
 209
 210         if (engine->keyState[SDL_SCANCODE_F12])
 211         {
 212                 snprintf(screenshot, sizeof screenshot, "screenshots/screenshot%.3d.bmp", screenShotNumber);
 213                 SDL_SaveBMP(screen, screenshot);
 214                 screenShotNumber++;
 215
 216                 engine->keyState[SDL_SCANCODE_F12] = 0;
 217         }
 218
 219         if ((engine->keyState[SDL_SCANCODE_F10]) || ((engine->keyState[SDL_SCANCODE_RETURN]) && (engine->keyState[SDL_SCANCODE_LALT])))
 220         {
 221                 engine->fullScreen = !engine->fullScreen;
 222                 SDL_SetWindowFullscreen(window, engine->fullScreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
 223
 224                 engine->keyState[SDL_SCANCODE_F10] = engine->keyState[SDL_SCANCODE_LALT] = engine->keyState[SDL_SCANCODE_RETURN] = 0;
 225         }
 226 }
 227
 228 void Graphics::delay(int time)
 229 {
 230         unsigned long then = SDL_GetTicks();
 231
 232         engine->keyState[SDL_SCANCODE_ESCAPE] = 0;
 233
 234         while (true)
 235         {
 236                 updateScreen();
 237
 238                 if (SDL_GetTicks() >= then + time)
 239                 {
 240                         break;
 241                 }
 242
 243                 engine->getInput();
 244
 245                 /*
 246                 if (engine->keyState[SDL_SCANCODE_ESCAPE])
 247                 {
 248                         break;
 249                 }
 250                 */
 251         }
 252 }
 253
 254 void Graphics::RGBtoHSV(float r, float g, float b, float *h, float *s, float *v)
 255 {
 256         float mn, mx, delta;
 257         mn = min(min(r, g), b);
 258         mx = max(max(r, g), b);
 259         *v = mx;
 260         delta = mx - mn;
 261
 262         if (mx != 0)
 263         {
 264                 *s = delta / mx;
 265         }
 266         else
 267         {
 268                 *s = 0;
 269                 *h = -1;
 270                 return;
 271         }
 272
 273         if (r == mx)
 274         {
 275                 *h = (g - b) / delta;
 276         }
 277         else if (g == mx)
 278         {
 279                 *h = 2 + (b - r) / delta;
 280         }
 281         else
 282         {
 283                 *h = 4 + (r - g) / delta;
 284         }
 285
 286         *h *= 60;
 287
 288         if (*h < 0)
 289         {
 290                 *h += 360;
 291         }
 292 }
 293
 294 void Graphics::HSVtoRGB(float *r, float *g, float *b, float h, float s, float v)
 295 {
 296         int i;
 297         float f, p, q, t;
 298         if (s == 0)
 299         {
 300                 *r = *g = *b = v;
 301                 return;
 302         }
 303
 304         h /= 60;
 305         i = (int)(h);
 306         f = h - i;
 307         p = v * (1 - s);
 308         q = v * (1 - s * f);
 309         t = v * (1 - s * (1 - f));
 310
 311         switch (i)
 312         {
 313                 case 0:
 314                         *r = v;
 315                         *g = t;
 316                         *b = p;
 317                         break;
 318
 319                 case 1:
 320                         *r = q;
 321                         *g = v;
 322                         *b = p;
 323                         break;
 324
 325                 case 2:
 326                         *r = p;
 327                         *g = v;
 328                         *b = t;
 329                         break;
 330
 331                 case 3:
 332                         *r = p;
 333                         *g = q;
 334                         *b = v;
 335                         break;
 336
 337                 case 4:
 338                         *r = t;
 339                         *g = p;
 340                         *b = v;
 341                         break;
 342
 343                 default:
 344                         *r = v;
 345                         *g = p;
 346                         *b = q;
 347                         break;
 348         }
 349 }
 350
 351 SDL_Surface *Graphics::loadImage(const char *filename, bool srcalpha)
 352 {
 353         SDL_Surface *image, *newImage;
 354
 355         #if USEPAK
 356                 if (!engine->unpack(filename, PAK_IMG))
 357                         showErrorAndExit(ERR_FILE, filename);
 358                 image = IMG_Load_RW(engine->sdlrw, 1);
 359         #else
 360                 image = IMG_Load(filename);
 361         #endif
 362
 363         if (!image)
 364                 showErrorAndExit(ERR_FILE, filename);
 365
 366         newImage = SDL_ConvertSurface(image, screen->format, 0);
 367
 368         if (newImage)
 369         {
 370                 SDL_FreeSurface(image);
 371         }
 372         else
 373         {
 374                 // This happens when we are loading the window icon image
 375                 newImage = image;
 376         }
 377
 378         if(srcalpha)
 379                 SDL_SetAlpha(newImage, 255);
 380         else
 381                 setTransparent(newImage);
 382
 383         return newImage;
 384 }
 385
 386 SDL_Surface *Graphics::loadImage(const char *filename, int hue, int sat, int value)
 387 {
 388         SDL_Surface *image, *newImage;
 389
 390         #if USEPAK
 391                 if (!engine->unpack(filename, PAK_IMG))
 392                         showErrorAndExit(ERR_FILE, filename);
 393                 image = IMG_Load_RW(engine->sdlrw, 1);
 394         #else
 395                 image = IMG_Load(filename);
 396         #endif
 397
 398         if (!image)
 399                 showErrorAndExit(ERR_FILE, filename);
 400
 401         if ((hue != 0) || (sat != 0) || (value != 0))
 402         {
 403                 if (image->format->BitsPerPixel != 8)
 404                 {
 405                         debug(("WARNING: Could not set Hue for '%s'! Not an 8 bit image!\n", filename));
 406                 }
 407                 else
 408                 {
 409                         SDL_Color *color;
 410                         float r, g, b, h, s, v;
 411
 412                         if (image->format->palette->colors != NULL)
 413                         {
 414                                 for (int i = 1 ; i < image->format->palette->ncolors ; i++)
 415                                 {
 416                                         color = &image->format->palette->colors[i];
 417
 418                                         r = (int)color->r;
 419                                         g = (int)color->g;
 420                                         b = (int)color->b;
 421
 422                                         RGBtoHSV(r, g, b, &h, &s, &v);
 423
 424                                         h += hue;
 425                                         s += sat;
 426                                         v += value;
 427
 428                                         HSVtoRGB(&r, &g, &b, h, s, v);
 429
 430                                         color->r = (int)r;
 431                                         color->g = (int)g;
 432                                         color->b = (int)b;
 433
 434                                 }
 435                         }
 436                 }
 437         }
 438
 439         newImage = SDL_ConvertSurface(image, screen->format, 0);
 440
 441         if (newImage)
 442         {
 443                 SDL_FreeSurface(image);
 444         }
 445         else
 446         {
 447                 // This happens when we are loading the window icon image
 448                 newImage = image;
 449         }
 450
 451         setTransparent(newImage);
 452
 453         return newImage;
 454 }
 455
 456 SDL_Surface *Graphics::quickSprite(const char *name, SDL_Surface *image)
 457 {
 458         Sprite *sprite = addSprite(name);
 459         sprite->setFrame(0, image, 60);
 460
 461         return sprite->getCurrentFrame();
 462 }
 463
 464 void Graphics::fade(int amount)
 465 {
 466         SDL_SetAlpha(fadeBlack, amount);
 467         blit(fadeBlack, 0, 0, screen, false);
 468 }
 469
 470 void Graphics::fadeToBlack()
 471 {
 472         int start = 0;
 473
 474         while (start < 50)
 475         {
 476                 SDL_SetAlpha(fadeBlack, start);
 477                 blit(fadeBlack, 0, 0, screen, false);
 478                 delay(60);
 479                 start++;
 480         }
 481 }
 482
 483 void Graphics::loadMapTiles(const char *baseDir)
 484 {
 485         bool found, autoAlpha;
 486         char filename[255];
 487         filename[0] = 0;
 488
 489         autoAlpha = false;
 490
 491         if (strcmp(baseDir, "gfx/common") == 0)
 492         {
 493                 autoAlpha = true;
 494         }
 495
 496         #if !USEPAK
 497         FILE *fp;
 498         #endif
 499
 500         for (int i = 1 ; i < MAX_TILES ; i++)
 501         {
 502                 found = true;
 503
 504                 snprintf(filename, sizeof filename, "%s/%d.png", baseDir, i);
 505
 506                 #if USEPAK
 507
 508                 if (!engine->getPak()->fileExists(filename))
 509                         continue;
 510
 511                 #else
 512
 513                 fp = fopen(filename, "rb");
 514                 if (!fp)
 515                         continue;
 516                 fclose(fp);
 517
 518                 #endif
 519
 520                 if (found)
 521                 {
 522                         tile[i] = loadImage(filename);
 523
 524                         if (autoAlpha)
 525                         {
 526                                 if ((i < MAP_EXITSIGN) || (i >= MAP_WATERANIM))
 527                                 {
 528                                         SDL_SetAlpha(tile[i], 130);
 529                                 }
 530                         }
 531                         else
 532                         {
 533                                 if (i < MAP_DECORATION)
 534                                 {
 535                                         SDL_SetColorKey(tile[i], 0, SDL_MapRGB(tile[i]->format, 0, 0, 0));
 536                                 }
 537                         }
 538                 }
 539         }
 540 }
 541
 542 void Graphics::loadFont(int i, const char *filename, int pointSize)
 543 {
 544         debug(("Attempting to load font %s with point size of %d...\n", filename, pointSize));
 545
 546         if (font[i])
 547         {
 548                 debug(("Freeing Font %d first...\n", i));
 549                 TTF_CloseFont(font[i]);
 550         }
 551
 552         #if USEPAK
 553                 char tempPath[PATH_MAX];
 554                 snprintf(tempPath, sizeof tempPath, "%sfont.ttf", engine->userHomeDirectory);
 555                 font[i] = TTF_OpenFont(tempPath, pointSize);
 556         #else
 557                 font[i] = TTF_OpenFont("data/vera.ttf", pointSize);
 558         #endif
 559
 560         if (!font[i])
 561         {
 562                 engine->reportFontFailure();
 563         }
 564
 565         TTF_SetFontStyle(font[i], TTF_STYLE_NORMAL);
 566 }
 567
 568 Sprite *Graphics::addSprite(const char *name)
 569 {
 570         Sprite *sprite = new Sprite;
 571         strlcpy(sprite->name, name, sizeof sprite->name);
 572
 573         spriteList.add(sprite);
 574
 575         return sprite;
 576 }
 577
 578 Sprite *Graphics::getSprite(const char *name, bool required)
 579 {
 580         Sprite *sprite = (Sprite*)spriteList.getHead();
 581
 582         while (sprite->next != NULL)
 583         {
 584                 sprite = (Sprite*)sprite->next;
 585
 586                 if (strcmp(sprite->name, name) == 0)
 587                 {
 588                         return sprite;
 589                 }
 590         }
 591
 592         if (required)
 593                 showErrorAndExit("The requested sprite '%s' does not exist", name);
 594
 595         return NULL;
 596 }
 597
 598 void Graphics::animateSprites()
 599 {
 600         Sprite *sprite = (Sprite*)spriteList.getHead();
 601
 602         while (sprite->next != NULL)
 603         {
 604                 sprite = (Sprite*)sprite->next;
 605
 606                 sprite->animate();
 607         }
 608
 609         if ((engine->getFrameLoop() % 8) == 0)
 610         {
 611                 Math::wrapInt(&(++waterAnim), 201, 204);
 612                 Math::wrapInt(&(++slimeAnim), 207, 212);
 613                 Math::wrapInt(&(++lavaAnim), 214, 220);
 614         }
 615 }
 616
 617 int Graphics::getWaterAnim() const
 618 {
 619         return waterAnim;
 620 }
 621
 622 int Graphics::getSlimeAnim() const
 623 {
 624         return slimeAnim;
 625 }
 626
 627 int Graphics::getLavaAnim() const
 628 {
 629         return lavaAnim;
 630 }
 631
 632 int Graphics::getLavaAnim(int current)
 633 {
 634         if ((engine->getFrameLoop() % 8) == 0)
 635                 return Math::rrand(214, 220);
 636
 637         return current;
 638 }
 639
 640 void Graphics::loadBackground(const char *filename)
 641 {
 642         if (background != NULL)
 643                 SDL_FreeSurface(background);
 644
 645         if (strcmp(filename, "@none@") == 0)
 646                 return;
 647
 648         background = loadImage(filename);
 649
 650         SDL_SetColorKey(background, 0, SDL_MapRGB(background->format, 0, 0, 0));
 651 }
 652
 653 void Graphics::putPixel(int x, int y, Uint32 pixel, SDL_Surface *dest)
 654 {
 655         if ((x < 0) || (x > 639) || (y < 0) || (y > 479))
 656                 return;
 657
 658         int bpp = dest->format->BytesPerPixel;
 659         /* Here p is the address to the pixel we want to set */
 660         Uint8 *p = (Uint8 *)dest->pixels + y * dest->pitch + x * bpp;
 661
 662         switch(bpp)
 663         {
 664                 case 1:
 665                         *p = pixel;
 666                         break;
 667
 668                 case 2:
 669                         *(Uint16 *)p = pixel;
 670                         break;
 671
 672                 case 3:
 673                         if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
 674                         {
 675                                 p[0] = (pixel >> 16) & 0xff;
 676                                 p[1] = (pixel >> 8) & 0xff;
 677                                 p[2] = pixel & 0xff;
 678                         }
 679                         else
 680                         {
 681                                 p[0] = pixel & 0xff;
 682                                 p[1] = (pixel >> 8) & 0xff;
 683                                 p[2] = (pixel >> 16) & 0xff;
 684                         }
 685                         break;
 686
 687                 case 4:
 688                         *(Uint32 *)p = pixel;
 689                         break;
 690         }
 691 }
 692
 693 Uint32 Graphics::getPixel(SDL_Surface *surface, int x, int y)
 694 {
 695         if ((x < 0) || (x > (surface->w - 1)) || (y < 0) || (y > (surface->h - 1)))
 696                 return 0;
 697
 698         int bpp = surface->format->BytesPerPixel;
 699         Uint8 *p = (Uint8 *)surface->pixels + y * surface->pitch + x * bpp;
 700
 701         switch(bpp) {
 702         case 1:
 703                 return *p;
 704
 705         case 2:
 706                 return *(Uint16 *)p;
 707
 708         case 3:
 709                 if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
 710                                 return p[0] << 16 | p[1] << 8 | p[2];
 711                 else
 712                                 return p[0] | p[1] << 8 | p[2] << 16;
 713
 714         case 4:
 715                 return *(Uint32 *)p;
 716
 717         default:
 718                 return 0;       /* shouldn't happen, but avoids warnings */
 719         }
 720 }
 721
 722 void Graphics::drawLine(float startX, float startY, float endX, float endY, int color, SDL_Surface *dest)
 723 {
 724         lock(screen);
 725
 726         float dx, dy;
 727
 728         Math::calculateSlope(startX, startY, endX, endY, &dx, &dy);
 729
 730         while (true)
 731         {
 732                 putPixel((int)startX, (int)startY, color, dest);
 733
 734                 if ((int)startX == (int)endX)
 735                         break;
 736
 737                 startX -= dx;
 738                 startY -= dy;
 739         }
 740
 741         unlock(screen);
 742 }
 743
 744 void Graphics::blit(SDL_Surface *image, int x, int y, SDL_Surface *dest, bool centered)
 745 {
 746         if (!image)
 747         {
 748                 showErrorAndExit("graphics::blit() - NULL pointer", SDL_GetError());
 749         }
 750
 751         if ((x < -image->w) || (x > 640 + image->w))
 752                 return;
 753
 754         if ((y < -image->h) || (y > 480 + image->h))
 755                 return;
 756
 757         // Set up a rectangle to draw to
 758         gRect.x = x;
 759         gRect.y = y;
 760         if (centered)
 761         {
 762                 gRect.x -= (image->w / 2);
 763                 gRect.y -= (image->h / 2);
 764         }
 765
 766         gRect.w = image->w;
 767         gRect.h = image->h;
 768
 769         /* Blit onto the screen surface */
 770         if (SDL_BlitSurface(image, NULL, dest, &gRect) < 0)
 771                 showErrorAndExit("graphics::blit() - %s", SDL_GetError());
 772 }
 773
 774 void Graphics::drawBackground()
 775 {
 776         if (background != NULL)
 777                 blit(background, 0, 0, screen, false);
 778         else
 779                 SDL_FillRect(screen, NULL, black);
 780 }
 781
 782 void Graphics::drawBackground(SDL_Rect *r)
 783 {
 784         if (r->x < 0) r->x = 0;
 785         if (r->y < 0) r->y = 0;
 786         if (r->x + r->w > 639) r->w = 640 - r->x;
 787         if (r->y + r->h > 639) r->h = 480 - r->y;
 788
 789         if (SDL_BlitSurface(background, r, screen, r) < 0)
 790                 showErrorAndExit("graphics::blit() - %s", SDL_GetError());
 791 }
 792
 793 void Graphics::drawRect(int x, int y, int w, int h, int color, SDL_Surface *dest)
 794 {
 795         gRect.x = x;
 796         gRect.y = y;
 797         gRect.w = w;
 798         gRect.h = h;
 799
 800         SDL_FillRect(dest, &gRect, color);
 801 }
 802
 803 void Graphics::drawRect(int x, int y, int w, int h, int color, int borderColor, SDL_Surface *dest)
 804 {
 805         drawRect(x - 1, y - 1, w + 2, h + 2, borderColor, dest);
 806         drawRect(x, y, w, h, color, dest);
 807 }
 808
 809 void Graphics::setFontColor(int red, int green, int blue, int red2, int green2, int blue2)
 810 {
 811         fontForeground.r = red;
 812         fontForeground.g = green;
 813         fontForeground.b = blue;
 814
 815         fontBackground.r = red2;
 816         fontBackground.g = green2;
 817         fontBackground.b = blue2;
 818 }
 819
 820 void Graphics::setFontSize(int size)
 821 {
 822         fontSize = size;
 823         Math::limitInt(&fontSize, 0, 4);
 824 }
 825
 826 SDL_Surface *Graphics::getString(const char *in, bool transparent)
 827 {
 828         SDL_Surface *text = TTF_RenderUTF8_Shaded(font[fontSize], in, fontForeground, fontBackground);
 829
 830         if (!text)
 831         {
 832                 text = TTF_RenderUTF8_Shaded(font[fontSize], "FONT_ERROR", fontForeground, fontBackground);
 833         }
 834
 835         if (!text)
 836         {
 837                 fprintf(stderr, "Unable to render text: %s\n", SDL_GetError());
 838                 abort();
 839         }
 840
 841         if (transparent)
 842                 setTransparent(text);
 843
 844         return text;
 845 }
 846
 847 void Graphics::drawString(const char *in, int x, int y, int alignment, SDL_Surface *dest)
 848 {
 849         bool center = false;
 850
 851         SDL_Surface *text = TTF_RenderUTF8_Shaded(font[fontSize], in, fontForeground, fontBackground);
 852
 853         if (!text)
 854                 text = TTF_RenderUTF8_Shaded(font[fontSize], "FONT_ERROR", fontForeground, fontBackground);
 855
 856         if (!text)
 857                 return;
 858
 859         setTransparent(text);
 860
 861         if (alignment == TXT_RIGHT) x -= text->w;
 862         if (alignment == TXT_CENTERED) center = true;
 863
 864         blit(text, x, y, dest, center);
 865         SDL_FreeSurface(text);
 866 }
 867
 868 void Graphics::drawString(const char *in, int x, int y, int alignment, SDL_Surface *dest, SurfaceCache &cache)
 869 {
 870         bool center = false;
 871
 872         if(!cache.text || strcmp(in, cache.text)) {
 873                 if(cache.surface)
 874                         SDL_FreeSurface(cache.surface);
 875
 876                 if(cache.text)
 877                         ::free(cache.text);
 878
 879                 cache.text = strdup(in);
 880
 881                 cache.surface = TTF_RenderUTF8_Shaded(font[fontSize], in, fontForeground, fontBackground);
 882
 883                 if (!cache.surface)
 884                         cache.surface = TTF_RenderUTF8_Shaded(font[fontSize], "FONT_ERROR", fontForeground, fontBackground);
 885
 886                 if(!cache.surface)
 887                         return;
 888
 889                 setTransparent(cache.surface);
 890         }
 891
 892         if (alignment == TXT_RIGHT) x -= cache.surface->w;
 893         if (alignment == TXT_CENTERED) center = true;
 894
 895         blit(cache.surface, x, y, dest, center);
 896 }
 897
 898 void Graphics::clearChatString()
 899 {
 900         chatString[0] = 0;
 901 }
 902
 903 void Graphics::createChatString(const char *in)
 904 {
 905         strlcat(chatString, " ", sizeof chatString);
 906         strlcat(chatString, in, sizeof chatString);
 907 }
 908
 909 void Graphics::drawChatString(SDL_Surface *surface, int y)
 910 {
 911         char *word = strtok(chatString, " ");
 912         char wordWithSpace[100];
 913
 914         int r, g, b;
 915
 916         int x = 10;
 917         int surfaceWidth = surface->w - 10;
 918
 919         SDL_Surface *wordSurface;
 920
 921         while (word)
 922         {
 923                 if (strcmp(word, "<RGB>") == 0)
 924                 {
 925                         r = atoi(strtok(NULL, " "));
 926                         g = atoi(strtok(NULL, " "));
 927                         b = atoi(strtok(NULL, " "));
 928
 929                         if ((!r) && (!g) && (!b))
 930                         {
 931                                 debug(("Parse Error in Text Color (%d:%d:%d)!!\n", r, g, b));
 932                                 exit(1);
 933                         }
 934
 935                         setFontColor(r, g, b, 0, 0, 0);
 936
 937                         word = strtok(NULL, " ");
 938
 939                         continue;
 940                 }
 941
 942                 snprintf(wordWithSpace, sizeof wordWithSpace, "%s ", word);
 943
 944                 wordSurface = getString(wordWithSpace, false);
 945
 946                 if (x + wordSurface->w > surfaceWidth)
 947                 {
 948                         y += (int)(wordSurface->h * 1.5) ;
 949                         x = 10;
 950                 }
 951
 952                 blit(wordSurface, x, y, surface, false);
 953
 954                 x += wordSurface->w;
 955
 956                 SDL_FreeSurface(wordSurface);
 957
 958                 word = strtok(NULL, " ");
 959         }
 960 }
 961
 962 void Graphics::showMedalMessage(int type, const char *in)
 963 {
 964         char message[1024];
 965
 966         if (medalMessage != NULL)
 967         {
 968                 SDL_FreeSurface(medalMessage);
 969         }
 970
 971         setFontSize(0);
 972
 973         switch (type)
 974         {
 975                 // Bronze
 976                 case 1:
 977                         setFontColor(0xA6, 0x7D, 0x3D, 0x00, 0x00, 0x00);
 978                         break;
 979
 980                 // Silver
 981                 case 2:
 982                         setFontColor(0xC0, 0xC0, 0xC0, 0x00, 0x00, 0x00);
 983                         break;
 984
 985                 // Gold
 986                 case 3:
 987                         setFontColor(0xFF, 0xCC, 0x33, 0x00, 0x00, 0x00);
 988                         break;
 989
 990                 // Ruby
 991                 case 4:
 992                         setFontColor(0xFF, 0x11, 0x55, 0x00, 0x00, 0x00);
 993                         break;
 994         }
 995
 996         medalType = type - 1; // for indexing on the image
 997         if (type != -1)
 998         {
 999                 snprintf(message, sizeof message, "  Medal Earned - %s  ", in);
1000                 medalMessage = getString(message, true);
1001         }
1002         else
1003         {
1004                 snprintf(message, sizeof message, "  %s  ", in);
1005                 medalMessage = getString(message, true);
1006         }
1007         medalMessageTimer = (5 * 60);
1008 }
1009
1010 void Graphics::drawWidgetRect(int x, int y, int w, int h)
1011 {
1012         drawRect(x - 5, y - 4, w + 10, h + 8, white, screen);
1013         drawRect(x - 4, y - 3, w + 8, h + 6, black, screen);
1014         drawRect(x - 3, y - 2, w + 6, h + 4, green, screen);
1015 }
1016
1017 SDL_Surface *Graphics::createSurface(int width, int height)
1018 {
1019         SDL_Surface *surface, *newImage;
1020
1021         surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, screen->format->BitsPerPixel, screen->format->Rmask, screen->format->Gmask, screen->format->Bmask, screen->format->Amask);
1022
1023         if (surface == NULL)
1024                 showErrorAndExit("CreateRGBSurface failed: %s\n", SDL_GetError());
1025
1026         newImage = SDL_ConvertSurface(surface, screen->format, 0);
1027
1028         SDL_FreeSurface(surface);
1029
1030         return newImage;
1031 }
1032
1033 SDL_Surface *Graphics::alphaRect(int width, int height, Uint8 red, Uint8 green, Uint8 blue)
1034 {
1035         SDL_Surface *surface = createSurface(width, height);
1036
1037         SDL_FillRect(surface, NULL, SDL_MapRGB(surface->format, red, green, blue));
1038
1039         SDL_SetAlpha(surface, 130);
1040
1041         return surface;
1042 }
1043
1044 void Graphics::colorize(SDL_Surface *image, int red, int green, int blue)
1045 {
1046         SDL_Surface *alpha = alphaRect(image->w, image->h, red, green, blue);
1047
1048         blit(alpha, 0, 0, image, false);
1049
1050         SDL_SetColorKey(image, SDL_TRUE, SDL_MapRGB(image->format, red / 2, green / 2, blue / 2));
1051 }
1052
1053 void Graphics::lock(SDL_Surface *surface)
1054 {
1055         /* Lock the screen for direct access to the pixels */
1056         if (SDL_MUSTLOCK(surface))
1057         {
1058                 if (SDL_LockSurface(surface) < 0 )
1059                 {
1060                         showErrorAndExit("Could not lock surface", "");
1061                 }
1062         }
1063 }
1064
1065 void Graphics::unlock(SDL_Surface *surface)
1066 {
1067         if (SDL_MUSTLOCK(surface))
1068         {
1069                 SDL_UnlockSurface(surface);
1070         }
1071 }
1072
1073 void Graphics::resetLoading()
1074 {
1075         currentLoading = 0;
1076 }
1077
1078 void Graphics::showLoading(int amount, int max)
1079 {
1080         #if USEPAK
1081         max *= 4;
1082
1083         if (max > 398)
1084                 max = 398;
1085
1086         Math::limitInt(&(currentLoading += amount), 0, max);
1087
1088         drawRect(120, 420, 400, 10, black, white, screen);
1089         drawRect(121, 421, currentLoading, 8, red, screen);
1090         #endif
1091 }
1092
1093 void Graphics::showLicenseErrorAndExit()
1094 {
1095         setFontSize(3); setFontColor(0xff, 0x00, 0x00, 0x00, 0x00, 0x00);
1096         drawString("License Agreement Missing", 320, 50, true, screen);
1097
1098         setFontSize(1); setFontColor(0xff, 0xff, 0xff, 0x00, 0x00, 0x00);
1099
1100         drawString("The GNU General Public License was not found.", 320, 180, true, screen);
1101         drawString("It could either not be properly loaded or has been removed.", 320, 220, true, screen);
1102         drawString("Blob Wars : Metal Blob Solid will not run with the license missing.", 320, 260, true, screen);
1103
1104         drawString("Blob Wars : Metal Blob Solid will now exit", 320, 420, true, screen);
1105         drawString("Press Escape to continue", 320, 450, true, screen);
1106
1107         engine->flushInput();
1108
1109         while (true)
1110         {
1111                 updateScreen();
1112                 engine->getInput();
1113                 if (engine->keyState[SDL_SCANCODE_ESCAPE])
1114                         exit(1);
1115                 SDL_Delay(16);
1116         }
1117 }
1118
1119 void Graphics::showErrorAndExit(const char *error, const char *param)
1120 {
1121         SDL_FillRect(screen, NULL, black);
1122
1123         if (strcmp(param, "LICENSE") == 0)
1124         {
1125                 showLicenseErrorAndExit();
1126         }
1127
1128         char message[256];
1129         snprintf(message, sizeof message, error, param);
1130
1131         setFontSize(3); setFontColor(0xff, 0x00, 0x00, 0x00, 0x00, 0x00);
1132         drawString("An unforseen error has occurred", 320, 50, true, screen);
1133         setFontSize(1); setFontColor(0xff, 0xff, 0xff, 0x00, 0x00, 0x00);
1134         drawString(message, 320, 90, true, screen);
1135
1136         drawString("You may wish to try the following,", 50, 150, false, screen);
1137
1138         setFontSize(0);
1139         drawString("1) Try reinstalling the game.", 75, 190, false, screen);
1140         drawString("2) Ensure you have SDL 1.2.5 or greater installed.", 75, 210, false, screen);
1141         drawString("3) Ensure you have the latest versions of additional required SDL libraries.", 75, 230, false, screen);
1142         drawString("4) Install using an RPM if you originally built the game from source", 75, 250, false, screen);
1143         drawString("or try building from source if you installed using an RPM.", 75, 270, false, screen);
1144         drawString("5) Visit http://www.parallelrealities.co.uk/blobWars.php and check for updates.", 75, 290, false, screen);
1145
1146         setFontSize(1);
1147
1148         drawString("If problems persist contact Parallel Realities. Please be aware however that we will not", 320, 360, true, screen);
1149         drawString("be able to assist in cases where the code or data has been modified.", 320, 380, true, screen);
1150
1151         drawString("Blob Wars : Metal Blob Solid will now exit", 320, 420, true, screen);
1152         drawString("Press Escape to continue", 320, 450, true, screen);
1153
1154         engine->flushInput();
1155
1156         while (true)
1157         {
1158                 updateScreen();
1159                 engine->getInput();
1160                 if (engine->keyState[SDL_SCANCODE_ESCAPE])
1161                 {
1162                         exit(1);
1163                 }
1164                 SDL_Delay(16);
1165         }
1166 }
1167
1168 void Graphics::showRootWarning()
1169 {
1170         setFontSize(3); setFontColor(0xff, 0x00, 0x00, 0x00, 0x00, 0x00);
1171         drawString("CAUTION - RUNNING AS ROOT USER!", 320, 50, true, screen);
1172
1173         setFontSize(1); setFontColor(0xff, 0xff, 0xff, 0x00, 0x00, 0x00);
1174
1175         drawString("WARNING - You appear to be running the game as the root user!", 320, 180, true, screen);
1176         drawString("This is not recommended and is it strongly advised that you do not run", 320, 220, true, screen);
1177         drawString("the game as root. You may still continue but consider running as regular user in future!", 320, 260, true, screen);
1178
1179         drawString("Press Space to Exit", 320, 420, true, screen);
1180         drawString("Press Escape to Continue", 320, 450, true, screen);
1181
1182         engine->flushInput();
1183
1184         while (true)
1185         {
1186                 updateScreen();
1187                 engine->getInput();
1188
1189                 if (engine->keyState[SDL_SCANCODE_ESCAPE])
1190                 {
1191                         return;
1192                 }
1193                 else if (engine->keyState[SDL_SCANCODE_SPACE])
1194                 {
1195                         exit(0);
1196                 }
1197
1198                 SDL_Delay(16);
1199         }
1200 }