Source/OpenGL_Windows.cpp

   1 /*
   2 Copyright (C) 2003, 2010 - Wolfire Games
   3
   4 This file is part of Lugaru.
   5
   6 Lugaru is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU General Public License
   8 as published by the Free Software Foundation; either version 2
   9 of the License, or (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  14
  15 See the GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 */
  21
  22
  23 #ifdef WIN32
  24 #define UINT8 WIN32API_UINT8
  25 #define UINT16 WIN32API_UINT16
  26 #define boolean WIN32API_boolean
  27 #include <windows.h>
  28 #undef UINT8
  29 #undef UINT16
  30 #undef boolean
  31 #endif
  32
  33
  34
  35 #include "Game.h"
  36 extern "C" {
  37         #include "zlib.h"
  38         #include "png.h"
  39    #ifdef WIN32
  40                 #define INT32 INT32_jpeg
  41                 #include "jpeglib.h"
  42                 #undef INT32
  43         #else
  44                 #include "jpeglib.h"
  45         #endif
  46 }
  47
  48 static bool load_image(const char * fname, TGAImageRec & tex);
  49 static bool load_png(const char * fname, TGAImageRec & tex);
  50 static bool load_jpg(const char * fname, TGAImageRec & tex);
  51 static bool save_image(const char * fname);
  52 static bool save_png(const char * fname);
  53
  54
  55 #include "openal_wrapper.h"
  56
  57 // ADDED GWC
  58 #ifdef _MSC_VER
  59 #pragma comment(lib, "opengl32.lib")
  60 #pragma comment(lib, "glu32.lib")
  61 #pragma comment(lib, "glaux.lib")
  62 #endif
  63
  64 extern bool buttons[3];
  65 extern float multiplier;
  66 extern float sps;
  67 extern float realmultiplier;
  68 extern int slomo;
  69 extern bool cellophane;
  70 // MODIFIED GWC
  71 //extern int terraindetail;
  72 //extern int texdetail;
  73 extern float terraindetail;
  74 extern float texdetail;
  75
  76 extern bool osx;
  77 extern int numplayers;
  78 extern bool freeze;
  79 extern Person player[maxplayers];
  80 extern bool stillloading;
  81 extern int mainmenu;
  82 /*extern*/ bool gameFocused;
  83
  84 extern float slomospeed;
  85 extern float slomofreq;
  86
  87
  88
  89 #include <math.h>
  90 #include <stdio.h>
  91 #include <string.h>
  92 #include <fstream>
  93 #include <iostream>
  94 #include "gamegl.h"
  95 #include "MacCompatibility.h"
  96 #include "Settings.h"
  97
  98 #ifdef WIN32
  99 #include <shellapi.h>
 100 #include "win-res/resource.h"
 101 #endif
 102
 103 using namespace std;
 104
 105
 106
 107 SDL_Rect **resolutions = NULL;
 108 static SDL_Rect rect_1024_768 = { 0, 0, 1024, 768 };
 109 static SDL_Rect rect_800_600  = { 0, 0, 800,  600 };
 110 static SDL_Rect rect_640_480  = { 0, 0, 640,  480 };
 111 static SDL_Rect *hardcoded_resolutions[] = {
 112     &rect_1024_768,
 113     &rect_800_600,
 114     &rect_640_480,
 115     NULL
 116 };
 117
 118
 119
 120 unsigned int resolutionDepths[8][2] = {0};
 121
 122 bool selectDetail(int & width, int & height, int & bpp, int & detail);
 123 int closestResolution(int width, int height);
 124 int resolutionID(int width, int height);
 125
 126 void ReportError (char * strError);
 127
 128 void SetupDSpFullScreen();
 129 void ShutdownDSp();
 130
 131 void DrawGL(Game & game);
 132
 133 void CreateGLWindow (void);
 134 Boolean SetUp (Game & game);
 135 void DoKey (SInt8 theKey, SInt8 theCode);
 136 void DoUpdate (Game & game);
 137
 138 void DoEvent (void);
 139 void CleanUp (void);
 140
 141
 142 // statics/globals (internal only) ------------------------------------------
 143 #ifndef WIN32
 144 typedef struct tagPOINT {
 145   int x;
 146   int y;
 147 } POINT, *PPOINT;
 148 #endif
 149
 150
 151
 152 #ifdef _MSC_VER
 153 #pragma warning(push)
 154 #pragma warning(disable: 4273)
 155 #endif
 156
 157 #define GL_FUNC(ret,fn,params,call,rt) \
 158     extern "C" { \
 159         static ret (GLAPIENTRY *p##fn) params = NULL; \
 160         ret GLAPIENTRY fn params { rt p##fn call; } \
 161     }
 162 #include "glstubs.h"
 163 #undef GL_FUNC
 164
 165 #ifdef _MSC_VER
 166 #pragma warning(pop)
 167 #endif
 168
 169 static bool lookup_glsym(const char *funcname, void **func)
 170 {
 171     *func = SDL_GL_GetProcAddress(funcname);
 172     if (*func == NULL)
 173     {
 174         fprintf(stderr, "Failed to find OpenGL symbol \"%s\"\n", funcname);
 175         return false;
 176     }
 177     return true;
 178 }
 179
 180 static bool lookup_all_glsyms(void)
 181 {
 182     bool retval = true;
 183     #define GL_FUNC(ret,fn,params,call,rt) \
 184         if (!lookup_glsym(#fn, (void **) &p##fn)) retval = false;
 185     #include "glstubs.h"
 186     #undef GL_FUNC
 187     return retval;
 188 }
 189
 190 static void GLAPIENTRY glDeleteTextures_doNothing(GLsizei n, const GLuint *textures)
 191 {
 192     // no-op.
 193 }
 194
 195
 196
 197 void sdlGetCursorPos(POINT *pt)
 198 {
 199     int x, y;
 200     SDL_GetMouseState(&x, &y);
 201     pt->x = x;
 202     pt->y = y;
 203 }
 204 #define GetCursorPos(x) sdlGetCursorPos(x)
 205 #define SetCursorPos(x, y) SDL_WarpMouse(x, y)
 206 #define ScreenToClient(x, pt)
 207 #define ClientToScreen(x, pt)
 208 #ifdef MessageBox
 209 #undef MessageBox
 210 #endif
 211 #define MessageBox(hwnd,text,title,flags) STUBBED("msgbox")
 212
 213
 214 Point delta;
 215
 216 static bool g_button, fullscreen = true;
 217
 218
 219 // Menu defs
 220 enum
 221 {
 222         kFileQuit = 1
 223 };
 224
 225 enum
 226 {
 227         kForegroundSleep = 10,
 228         kBackgroundSleep = 10000
 229 };
 230
 231
 232 int kContextWidth;
 233 int kContextHeight;
 234
 235 const RGBColor rgbBlack = { 0x0000, 0x0000, 0x0000 };
 236
 237 GLuint gFontList;
 238 char gcstrMode [256] = "";
 239
 240 UInt32 gSleepTime = kForegroundSleep;
 241 Boolean gDone = false, gfFrontProcess = true;
 242
 243 Game * pgame = 0;
 244
 245 #ifndef __MINGW32__
 246 static int _argc = 0;
 247 static char **_argv = NULL;
 248 #endif
 249
 250 bool cmdline(const char *cmd)
 251 {
 252     for (int i = 1; i < _argc; i++)
 253     {
 254         char *arg = _argv[i];
 255         while (*arg == '-')
 256             arg++;
 257         if (strcasecmp(arg, cmd) == 0)
 258             return true;
 259     }
 260
 261     return false;
 262 }
 263
 264
 265 // --------------------------------------------------------------------------
 266
 267 void ReportError (char * strError)
 268 {
 269 #ifdef _MSC_VER  // !!! FIXME.  --ryan.
 270         throw std::exception( strError);
 271 #endif
 272
 273         /*      char errMsgCStr [256];
 274         Str255 strErr;
 275
 276         sprintf (errMsgCStr, "%s", strError);
 277
 278         // out as debug string
 279         CToPStr (strErr, errMsgCStr);
 280         DebugStr (strErr);
 281         */
 282 }
 283
 284 void SetupDSpFullScreen ()
 285 {
 286 }
 287
 288
 289 void ShutdownDSp ()
 290 {
 291 }
 292
 293
 294 //-----------------------------------------------------------------------------------------------------------------------
 295
 296 // OpenGL Drawing
 297
 298 void DrawGL (Game & game)
 299 {
 300         game.DrawGLScene();
 301 }
 302
 303
 304 static KeyMap g_theKeys;
 305
 306 void SetKey( int key)
 307 {
 308     g_theKeys[ key >> 3] |= (1 << (key & 7));
 309 }
 310
 311 void ClearKey( int key)
 312 {
 313     g_theKeys[ key >> 3] &= (0xff ^ (1 << (key & 7)));
 314 }
 315
 316 void GetKeys(  unsigned char theKeys[16])
 317 {
 318     memcpy( theKeys, &g_theKeys, 16);
 319 }
 320
 321 Boolean Button()
 322 {
 323     return g_button;
 324 }
 325
 326
 327 #define MAX_SDLKEYS SDLK_LAST
 328 static unsigned short KeyTable[MAX_SDLKEYS];
 329
 330 static void initSDLKeyTable(void)
 331 {
 332     memset(KeyTable, 0xFF, sizeof (KeyTable));
 333     KeyTable[SDLK_BACKSPACE] = MAC_DELETE_KEY;
 334     KeyTable[SDLK_TAB] = MAC_TAB_KEY;
 335     KeyTable[SDLK_RETURN] = MAC_RETURN_KEY;
 336     KeyTable[SDLK_ESCAPE] = MAC_ESCAPE_KEY;
 337     KeyTable[SDLK_SPACE] = MAC_SPACE_KEY;
 338     KeyTable[SDLK_PAGEUP] = MAC_PAGE_UP_KEY;
 339     KeyTable[SDLK_PAGEDOWN] = MAC_PAGE_DOWN_KEY;
 340     KeyTable[SDLK_END] = MAC_END_KEY;
 341     KeyTable[SDLK_HOME] = MAC_HOME_KEY;
 342     KeyTable[SDLK_LEFT] = MAC_ARROW_LEFT_KEY;
 343     KeyTable[SDLK_UP] = MAC_ARROW_UP_KEY;
 344     KeyTable[SDLK_RIGHT] = MAC_ARROW_RIGHT_KEY;
 345     KeyTable[SDLK_DOWN] = MAC_ARROW_DOWN_KEY;
 346     KeyTable[SDLK_INSERT] = MAC_INSERT_KEY;
 347     KeyTable[SDLK_DELETE] = MAC_DEL_KEY;
 348     KeyTable[SDLK_0] = MAC_0_KEY;
 349     KeyTable[SDLK_1] = MAC_1_KEY;
 350     KeyTable[SDLK_2] = MAC_2_KEY;
 351     KeyTable[SDLK_3] = MAC_3_KEY;
 352     KeyTable[SDLK_4] = MAC_4_KEY;
 353     KeyTable[SDLK_5] = MAC_5_KEY;
 354     KeyTable[SDLK_6] = MAC_6_KEY;
 355     KeyTable[SDLK_7] = MAC_7_KEY;
 356     KeyTable[SDLK_8] = MAC_8_KEY;
 357     KeyTable[SDLK_9] = MAC_9_KEY;
 358     KeyTable[SDLK_a] = MAC_A_KEY;
 359     KeyTable[SDLK_b] = MAC_B_KEY;
 360     KeyTable[SDLK_c] = MAC_C_KEY;
 361     KeyTable[SDLK_d] = MAC_D_KEY;
 362     KeyTable[SDLK_e] = MAC_E_KEY;
 363     KeyTable[SDLK_f] = MAC_F_KEY;
 364     KeyTable[SDLK_g] = MAC_G_KEY;
 365     KeyTable[SDLK_h] = MAC_H_KEY;
 366     KeyTable[SDLK_i] = MAC_I_KEY;
 367     KeyTable[SDLK_j] = MAC_J_KEY;
 368     KeyTable[SDLK_k] = MAC_K_KEY;
 369     KeyTable[SDLK_l] = MAC_L_KEY;
 370     KeyTable[SDLK_m] = MAC_M_KEY;
 371     KeyTable[SDLK_n] = MAC_N_KEY;
 372     KeyTable[SDLK_o] = MAC_O_KEY;
 373     KeyTable[SDLK_p] = MAC_P_KEY;
 374     KeyTable[SDLK_q] = MAC_Q_KEY;
 375     KeyTable[SDLK_r] = MAC_R_KEY;
 376     KeyTable[SDLK_s] = MAC_S_KEY;
 377     KeyTable[SDLK_t] = MAC_T_KEY;
 378     KeyTable[SDLK_u] = MAC_U_KEY;
 379     KeyTable[SDLK_v] = MAC_V_KEY;
 380     KeyTable[SDLK_w] = MAC_W_KEY;
 381     KeyTable[SDLK_x] = MAC_X_KEY;
 382     KeyTable[SDLK_y] = MAC_Y_KEY;
 383     KeyTable[SDLK_z] = MAC_Z_KEY;
 384     KeyTable[SDLK_KP0] = MAC_NUMPAD_0_KEY;
 385     KeyTable[SDLK_KP1] = MAC_NUMPAD_1_KEY;
 386     KeyTable[SDLK_KP2] = MAC_NUMPAD_2_KEY;
 387     KeyTable[SDLK_KP3] = MAC_NUMPAD_3_KEY;
 388     KeyTable[SDLK_KP4] = MAC_NUMPAD_4_KEY;
 389     KeyTable[SDLK_KP5] = MAC_NUMPAD_5_KEY;
 390     KeyTable[SDLK_KP6] = MAC_NUMPAD_6_KEY;
 391     KeyTable[SDLK_KP7] = MAC_NUMPAD_7_KEY;
 392     KeyTable[SDLK_KP8] = MAC_NUMPAD_8_KEY;
 393     KeyTable[SDLK_KP9] = MAC_NUMPAD_9_KEY;
 394     KeyTable[SDLK_KP_MULTIPLY] = MAC_NUMPAD_ASTERISK_KEY;
 395     KeyTable[SDLK_KP_PLUS] = MAC_NUMPAD_PLUS_KEY;
 396     KeyTable[SDLK_KP_ENTER] = MAC_NUMPAD_ENTER_KEY;
 397     KeyTable[SDLK_KP_MINUS] = MAC_NUMPAD_MINUS_KEY;
 398     KeyTable[SDLK_KP_PERIOD] = MAC_NUMPAD_PERIOD_KEY;
 399     KeyTable[SDLK_KP_DIVIDE] = MAC_NUMPAD_SLASH_KEY;
 400     KeyTable[SDLK_F1] = MAC_F1_KEY;
 401     KeyTable[SDLK_F2] = MAC_F2_KEY;
 402     KeyTable[SDLK_F3] = MAC_F3_KEY;
 403     KeyTable[SDLK_F4] = MAC_F4_KEY;
 404     KeyTable[SDLK_F5] = MAC_F5_KEY;
 405     KeyTable[SDLK_F6] = MAC_F6_KEY;
 406     KeyTable[SDLK_F7] = MAC_F7_KEY;
 407     KeyTable[SDLK_F8] = MAC_F8_KEY;
 408     KeyTable[SDLK_F9] = MAC_F9_KEY;
 409     KeyTable[SDLK_F10] = MAC_F10_KEY;
 410     KeyTable[SDLK_F11] = MAC_F11_KEY;
 411     KeyTable[SDLK_F12] = MAC_F12_KEY;
 412     KeyTable[SDLK_SEMICOLON] = MAC_SEMICOLON_KEY;
 413     KeyTable[SDLK_PLUS] = MAC_PLUS_KEY;
 414     KeyTable[SDLK_COMMA] = MAC_COMMA_KEY;
 415     KeyTable[SDLK_MINUS] = MAC_MINUS_KEY;
 416     KeyTable[SDLK_PERIOD] = MAC_PERIOD_KEY;
 417     KeyTable[SDLK_SLASH] = MAC_SLASH_KEY;
 418     KeyTable[SDLK_BACKQUOTE] = MAC_TILDE_KEY;
 419     KeyTable[SDLK_LEFTBRACKET] = MAC_LEFTBRACKET_KEY;
 420     KeyTable[SDLK_BACKSLASH] = MAC_BACKSLASH_KEY;
 421     KeyTable[SDLK_RIGHTBRACKET] = MAC_RIGHTBRACKET_KEY;
 422     KeyTable[SDLK_QUOTE] = MAC_APOSTROPHE_KEY;
 423 }
 424
 425 static inline int clamp_sdl_mouse_button(Uint8 button)
 426 {
 427     if (button == 2)   // right mouse button is button 3 in SDL.
 428         button = 3;
 429     else if (button == 3)
 430         button = 2;
 431
 432     if ((button >= 1) && (button <= 3))
 433         return button - 1;
 434     return -1;
 435 }
 436
 437 static void sdlEventProc(const SDL_Event &e, Game &game)
 438 {
 439     int val;
 440     bool skipkey = false;
 441     SDLMod mod;
 442
 443     switch(e.type)
 444         {
 445         case SDL_MOUSEMOTION:
 446             game.deltah += e.motion.xrel;
 447             game.deltav += e.motion.yrel;
 448             return;
 449
 450                 case SDL_MOUSEBUTTONDOWN:
 451                         {
 452                 val = clamp_sdl_mouse_button(e.button.button);
 453                 if ((val >= 0) && (val <= 2))
 454                 {
 455                     if (val == 0)
 456                                     g_button = true;
 457                                 buttons[val] = true;
 458                 }
 459                         }
 460                         return;
 461
 462                 case SDL_MOUSEBUTTONUP:
 463                         {
 464                 val = clamp_sdl_mouse_button(e.button.button);
 465                 if ((val >= 0) && (val <= 2))
 466                 {
 467                     if (val == 0)
 468                                     g_button = false;
 469                                 buttons[val] = false;
 470                 }
 471                         }
 472             return;
 473
 474         case SDL_KEYDOWN:
 475             if (e.key.keysym.sym == SDLK_g)
 476             {
 477                 if (e.key.keysym.mod & KMOD_CTRL)
 478                 {
 479                     skipkey = true;
 480                     SDL_GrabMode mode = SDL_GRAB_ON;
 481                     if ((SDL_GetVideoSurface()->flags & SDL_FULLSCREEN) == 0)
 482                     {
 483                         mode = SDL_WM_GrabInput(SDL_GRAB_QUERY);
 484                         mode = (mode==SDL_GRAB_ON) ? SDL_GRAB_OFF:SDL_GRAB_ON;
 485                     }
 486                     SDL_WM_GrabInput(mode);
 487                 }
 488             }
 489
 490             else if (e.key.keysym.sym == SDLK_RETURN)
 491             {
 492                 if (e.key.keysym.mod & KMOD_ALT)
 493                 {
 494                     skipkey = true;
 495                     SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
 496                 }
 497             }
 498
 499             if ((!skipkey) && (e.key.keysym.sym < SDLK_LAST))
 500             {
 501                 if (KeyTable[e.key.keysym.sym] != 0xffff)
 502                     SetKey(KeyTable[e.key.keysym.sym]);
 503             }
 504
 505             mod = SDL_GetModState();
 506             if (mod & KMOD_CTRL)
 507                 SetKey(MAC_CONTROL_KEY);
 508             if (mod & KMOD_ALT)
 509                 SetKey(MAC_OPTION_KEY);
 510             if (mod & KMOD_META)
 511                 SetKey(MAC_COMMAND_KEY);
 512             if (mod & KMOD_SHIFT)
 513                 SetKey(MAC_SHIFT_KEY);
 514             if (mod & KMOD_CAPS)
 515                 SetKey(MAC_CAPS_LOCK_KEY);
 516
 517             return;
 518
 519         case SDL_KEYUP:
 520             if (e.key.keysym.sym < SDLK_LAST)
 521             {
 522                 if (KeyTable[e.key.keysym.sym] != 0xffff)
 523                     ClearKey(KeyTable[e.key.keysym.sym]);
 524             }
 525
 526             mod = SDL_GetModState();
 527             if ((mod & KMOD_CTRL) == 0)
 528                 ClearKey(MAC_CONTROL_KEY);
 529             if ((mod & KMOD_ALT) == 0)
 530                 ClearKey(MAC_OPTION_KEY);
 531             if ((mod & KMOD_META) == 0)
 532                 ClearKey(MAC_COMMAND_KEY);
 533             if ((mod & KMOD_SHIFT) == 0)
 534                 ClearKey(MAC_SHIFT_KEY);
 535             if ((mod & KMOD_CAPS) == 0)
 536                 ClearKey(MAC_CAPS_LOCK_KEY);
 537             return;
 538     }
 539 }
 540
 541
 542 // --------------------------------------------------------------------------
 543
 544 static Point gMidPoint;
 545
 546 Boolean SetUp (Game & game)
 547 {
 548         char string[10];
 549
 550         LOGFUNC;
 551
 552         randSeed = UpTime().lo;
 553
 554         osx = 0;
 555         cellophane=0;
 556         texdetail=4;
 557         terraindetail=2;
 558         slomospeed=0.25;
 559         slomofreq=8012;
 560         numplayers=1;
 561
 562         DefaultSettings(game);
 563
 564         selectDetail(kContextWidth, kContextHeight, kBitsPerPixel, detail);
 565
 566         if(!LoadSettings(game)) {
 567                 fprintf(stderr, "Failed to load config, creating default\n");
 568                 SaveSettings(game);
 569         }
 570         if(kBitsPerPixel!=32&&kBitsPerPixel!=16){
 571                 kBitsPerPixel=16;
 572         }
 573
 574
 575         selectDetail(kContextWidth, kContextHeight, kBitsPerPixel, detail);
 576
 577         SetupDSpFullScreen();
 578
 579
 580     if (!SDL_WasInit(SDL_INIT_VIDEO))
 581     {
 582         if (SDL_Init(SDL_INIT_VIDEO) == -1)
 583         {
 584             fprintf(stderr, "SDL_Init() failed: %s\n", SDL_GetError());
 585             return false;
 586         }
 587
 588         if (SDL_GL_LoadLibrary(NULL) == -1)
 589         {
 590             fprintf(stderr, "SDL_GL_LoadLibrary() failed: %s\n", SDL_GetError());
 591             SDL_Quit();
 592             return false;
 593         }
 594
 595         SDL_Rect **res = SDL_ListModes(NULL, SDL_FULLSCREEN|SDL_OPENGL);
 596         if ( (res == NULL) || (res == ((SDL_Rect **)-1)) || (res[0] == NULL) || (res[0]->w < 640) || (res[0]->h < 480) )
 597             res = hardcoded_resolutions;
 598
 599         // reverse list (it was sorted biggest to smallest by SDL)...
 600         int count;
 601         for (count = 0; res[count]; count++)
 602         {
 603             if ((res[count]->w < 640) || (res[count]->h < 480))
 604                 break;   // sane lower limit.
 605         }
 606
 607         static SDL_Rect *resolutions_block = NULL;
 608         resolutions_block = (SDL_Rect*) realloc(resolutions_block, sizeof (SDL_Rect) * count);
 609         resolutions = (SDL_Rect**) realloc(resolutions, sizeof (SDL_Rect *) * (count + 1));
 610         if ((resolutions_block == NULL) || (resolutions == NULL))
 611         {
 612             SDL_Quit();
 613             fprintf(stderr, "Out of memory!\n");
 614             return false;
 615         }
 616
 617         resolutions[count--] = NULL;
 618         for (int i = 0; count >= 0; i++, count--)
 619         {
 620             memcpy(&resolutions_block[count], res[i], sizeof (SDL_Rect));
 621             resolutions[count] = &resolutions_block[count];
 622         }
 623
 624         if (cmdline("showresolutions"))
 625         {
 626             printf("Resolutions we think are okay:\n");
 627             for (int i = 0; resolutions[i]; i++)
 628                 printf("  %d x %d\n", (int) resolutions[i]->w, (int) resolutions[i]->h);
 629         }
 630     }
 631
 632     Uint32 sdlflags = SDL_OPENGL;
 633     if (!cmdline("windowed"))
 634         sdlflags |= SDL_FULLSCREEN;
 635
 636     SDL_WM_SetCaption("Lugaru", "Lugaru");
 637
 638     SDL_ShowCursor(0);
 639
 640     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 641
 642     if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
 643     {
 644         fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
 645         fprintf(stderr, "forcing 640x480...\n");
 646         kContextWidth = 640;
 647         kContextHeight = 480;
 648         if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
 649         {
 650             fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
 651             fprintf(stderr, "forcing 640x480 windowed mode...\n");
 652             sdlflags &= ~SDL_FULLSCREEN;
 653             if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
 654             {
 655                 fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
 656                 return false;
 657             }
 658         }
 659     }
 660
 661     int dblbuf = 0;
 662     if ((SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &dblbuf) == -1) || (!dblbuf))
 663     {
 664         fprintf(stderr, "Failed to get double buffered GL context!\n");
 665         SDL_Quit();
 666         return false;
 667     }
 668
 669     if (!lookup_all_glsyms())
 670     {
 671         SDL_Quit();
 672         return false;
 673     }
 674
 675     if (!cmdline("nomousegrab"))
 676         SDL_WM_GrabInput(SDL_GRAB_ON);
 677
 678
 679         glClear( GL_COLOR_BUFFER_BIT );
 680         swap_gl_buffers();
 681
 682         // clear all states
 683         glDisable( GL_ALPHA_TEST);
 684         glDisable( GL_BLEND);
 685         glDisable( GL_DEPTH_TEST);
 686         //      glDisable( GL_DITHER);
 687         glDisable( GL_FOG);
 688         glDisable( GL_LIGHTING);
 689         glDisable( GL_LOGIC_OP);
 690         glDisable( GL_STENCIL_TEST);
 691         glDisable( GL_TEXTURE_1D);
 692         glDisable( GL_TEXTURE_2D);
 693         glPixelTransferi( GL_MAP_COLOR, GL_FALSE);
 694         glPixelTransferi( GL_RED_SCALE, 1);
 695         glPixelTransferi( GL_RED_BIAS, 0);
 696         glPixelTransferi( GL_GREEN_SCALE, 1);
 697         glPixelTransferi( GL_GREEN_BIAS, 0);
 698         glPixelTransferi( GL_BLUE_SCALE, 1);
 699         glPixelTransferi( GL_BLUE_BIAS, 0);
 700         glPixelTransferi( GL_ALPHA_SCALE, 1);
 701         glPixelTransferi( GL_ALPHA_BIAS, 0);
 702
 703         // set initial rendering states
 704         glShadeModel( GL_SMOOTH);
 705         glClearDepth( 1.0f);
 706         glDepthFunc( GL_LEQUAL);
 707         glDepthMask( GL_TRUE);
 708         //      glDepthRange( FRONT_CLIP, BACK_CLIP);
 709         glEnable( GL_DEPTH_TEST);
 710         glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
 711         glCullFace( GL_FRONT);
 712         glEnable( GL_CULL_FACE);
 713         glEnable( GL_LIGHTING);
 714 //      glEnable( GL_LIGHT_MODEL_AMBIENT);
 715         glEnable( GL_DITHER);
 716         glEnable( GL_COLOR_MATERIAL);
 717         glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 718         glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 719         glAlphaFunc( GL_GREATER, 0.5f);
 720
 721         GLint width = kContextWidth;
 722         GLint height = kContextHeight;
 723         gMidPoint.h = width / 2;
 724         gMidPoint.v = height / 2;
 725         screenwidth=width;
 726         screenheight=height;
 727
 728         game.newdetail=detail;
 729         game.newscreenwidth=screenwidth;
 730         game.newscreenheight=screenheight;
 731
 732         game.InitGame();
 733
 734         return true;
 735 }
 736
 737
 738 static void DoMouse(Game & game)
 739 {
 740
 741         if(mainmenu||(abs(game.deltah)<10*realmultiplier*1000&&abs(game.deltav)<10*realmultiplier*1000))
 742         {
 743                 game.deltah *= usermousesensitivity;
 744                 game.deltav *= usermousesensitivity;
 745                 game.mousecoordh += game.deltah;
 746                 game.mousecoordv += game.deltav;
 747         if (game.mousecoordh < 0)
 748             game.mousecoordh = 0;
 749         else if (game.mousecoordh >= kContextWidth)
 750             game.mousecoordh = kContextWidth - 1;
 751         if (game.mousecoordv < 0)
 752             game.mousecoordv = 0;
 753         else if (game.mousecoordv >= kContextHeight)
 754             game.mousecoordv = kContextHeight - 1;
 755         }
 756
 757 }
 758
 759
 760
 761 // --------------------------------------------------------------------------
 762
 763 void DoKey (SInt8 theKey, SInt8 theCode)
 764 {
 765         // do nothing
 766 }
 767
 768 // --------------------------------------------------------------------------
 769
 770
 771
 772 void DoFrameRate (int update)
 773 {
 774         static long frames = 0;
 775
 776         static AbsoluteTime time = {0,0};
 777         static AbsoluteTime frametime = {0,0};
 778         AbsoluteTime currTime = UpTime ();
 779         double deltaTime = (float) AbsoluteDeltaToDuration (currTime, frametime);
 780
 781         if (0 > deltaTime)      // if negative microseconds
 782                 deltaTime /= -1000000.0;
 783         else                            // else milliseconds
 784                 deltaTime /= 1000.0;
 785
 786         multiplier=deltaTime;
 787         if(multiplier<.001)multiplier=.001;
 788         if(multiplier>10)multiplier=10;
 789         if(update)frametime = currTime; // reset for next time interval
 790
 791         deltaTime = (float) AbsoluteDeltaToDuration (currTime, time);
 792
 793         if (0 > deltaTime)      // if negative microseconds
 794                 deltaTime /= -1000000.0;
 795         else                            // else milliseconds
 796                 deltaTime /= 1000.0;
 797         frames++;
 798         if (0.001 <= deltaTime) // has update interval passed
 799         {
 800                 if(update){
 801                         time = currTime;        // reset for next time interval
 802                         frames = 0;
 803                 }
 804         }
 805 }
 806
 807
 808 void DoUpdate (Game & game)
 809 {
 810         static float sps=200;
 811         static int count;
 812         static float oldmult;
 813
 814         DoFrameRate(1);
 815         if(multiplier>.6)multiplier=.6;
 816
 817         game.fps=1/multiplier;
 818
 819         count = multiplier*sps;
 820         if(count<2)count=2;
 821         //if(count>10)count=10;
 822
 823         realmultiplier=multiplier;
 824         multiplier*=gamespeed;
 825         if(difficulty==1)multiplier*=.9;
 826         if(difficulty==0)multiplier*=.8;
 827
 828         if(game.loading==4)multiplier*=.00001;
 829         //multiplier*.9;
 830         if(slomo&&!mainmenu)multiplier*=slomospeed;
 831         //if(freeze)multiplier*=0.00001;
 832         oldmult=multiplier;
 833         multiplier/=(float)count;
 834
 835         DoMouse(game);
 836
 837         game.TickOnce();
 838
 839         for(int i=0;i<count;i++)
 840         {
 841                 game.Tick();
 842         }
 843         multiplier=oldmult;
 844
 845         game.TickOnceAfter();
 846 /* - Debug code to test how many channels were active on average per frame
 847         static long frames = 0;
 848
 849         static AbsoluteTime start = {0,0};
 850         AbsoluteTime currTime = UpTime ();
 851         static int num_channels = 0;
 852
 853         num_channels += OPENAL_GetChannelsPlaying();
 854         double deltaTime = (float) AbsoluteDeltaToDuration (currTime, start);
 855
 856         if (0 > deltaTime)      // if negative microseconds
 857                 deltaTime /= -1000000.0;
 858         else                            // else milliseconds
 859                 deltaTime /= 1000.0;
 860
 861         ++frames;
 862
 863         if (deltaTime >= 1)
 864         {
 865                 start = currTime;
 866                 float avg_channels = (float)num_channels / (float)frames;
 867
 868                 ofstream opstream("log.txt",ios::app);
 869                 opstream << "Average frame count: ";
 870                 opstream << frames;
 871                 opstream << " frames - ";
 872                 opstream << avg_channels;
 873                 opstream << " per frame.\n";
 874                 opstream.close();
 875
 876                 frames = 0;
 877                 num_channels = 0;
 878         }
 879 */
 880         DrawGL (game);
 881 }
 882
 883 // --------------------------------------------------------------------------
 884
 885
 886 void CleanUp (void)
 887 {
 888         LOGFUNC;
 889
 890 //      game.Dispose();
 891
 892
 893
 894
 895     SDL_Quit();
 896     #define GL_FUNC(ret,fn,params,call,rt) p##fn = NULL;
 897     #include "glstubs.h"
 898     #undef GL_FUNC
 899     // cheat here...static destructors are calling glDeleteTexture() after
 900     //  the context is destroyed and libGL unloaded by SDL_Quit().
 901     pglDeleteTextures = glDeleteTextures_doNothing;
 902
 903 }
 904
 905 // --------------------------------------------------------------------------
 906
 907 static bool IsFocused()
 908 {
 909     return ((SDL_GetAppState() & SDL_APPINPUTFOCUS) != 0);
 910 }
 911
 912
 913 static void launch_web_browser(const char *url)
 914 {
 915 #ifdef WIN32
 916     ShellExecute(NULL, "open", url, NULL, NULL, SW_SHOWNORMAL);
 917
 918 #elif (defined(__APPLE__) && defined(__MACH__))
 919     const char *fmt = "open '%s'";
 920     const size_t len = strlen(fmt) + strlen(url) + 16;
 921     char *buf = new char[len];
 922     snprintf(buf, len, fmt, url);
 923     system(buf);
 924     delete[] buf;
 925
 926 #elif PLATFORM_LINUX
 927     const char *fmt = "PATH=$PATH:. xdg-open '%s'";
 928     const size_t len = strlen(fmt) + strlen(url) + 16;
 929     char *buf = new char[len];
 930     snprintf(buf, len, fmt, url);
 931     system(buf);
 932     delete[] buf;
 933 #endif
 934 }
 935
 936
 937 #ifndef WIN32
 938 // (code lifted from physfs: http://icculus.org/physfs/ ... zlib license.)
 939 static char *findBinaryInPath(const char *bin, char *envr)
 940 {
 941     size_t alloc_size = 0;
 942     char *exe = NULL;
 943     char *start = envr;
 944     char *ptr;
 945
 946     do
 947     {
 948         size_t size;
 949         ptr = strchr(start, ':');  /* find next $PATH separator. */
 950         if (ptr)
 951             *ptr = '\0';
 952
 953         size = strlen(start) + strlen(bin) + 2;
 954         if (size > alloc_size)
 955         {
 956             char *x = (char *) realloc(exe, size);
 957             if (x == NULL)
 958             {
 959                 if (exe != NULL)
 960                     free(exe);
 961                 return(NULL);
 962             } /* if */
 963
 964             alloc_size = size;
 965             exe = x;
 966         } /* if */
 967
 968         /* build full binary path... */
 969         strcpy(exe, start);
 970         if ((exe[0] == '\0') || (exe[strlen(exe) - 1] != '/'))
 971             strcat(exe, "/");
 972         strcat(exe, bin);
 973
 974         if (access(exe, X_OK) == 0)  /* Exists as executable? We're done. */
 975         {
 976             strcpy(exe, start);  /* i'm lazy. piss off. */
 977             return(exe);
 978         } /* if */
 979
 980         start = ptr + 1;  /* start points to beginning of next element. */
 981     } while (ptr != NULL);
 982
 983     if (exe != NULL)
 984         free(exe);
 985
 986     return(NULL);  /* doesn't exist in path. */
 987 } /* findBinaryInPath */
 988
 989
 990 char *calcBaseDir(const char *argv0)
 991 {
 992     /* If there isn't a path on argv0, then look through the $PATH for it. */
 993     char *retval;
 994     char *envr;
 995
 996     const char *ptr = strrchr((char *)argv0, '/');
 997     if (strchr(argv0, '/'))
 998     {
 999         retval = strdup(argv0);
1000         if (retval)
1001             *((char *) strrchr(retval, '/')) = '\0';
1002         return(retval);
1003     }
1004
1005     envr = getenv("PATH");
1006     if (!envr) return NULL;
1007     envr = strdup(envr);
1008     if (!envr) return NULL;
1009     retval = findBinaryInPath(argv0, envr);
1010     free(envr);
1011     return(retval);
1012 }
1013
1014 static inline void chdirToAppPath(const char *argv0)
1015 {
1016     char *dir = calcBaseDir(argv0);
1017     if (dir)
1018     {
1019         #if (defined(__APPLE__) && defined(__MACH__))
1020         // Chop off /Contents/MacOS if it's at the end of the string, so we
1021         //  land in the base of the app bundle.
1022         const size_t len = strlen(dir);
1023         const char *bundledirs = "/Contents/MacOS";
1024         const size_t bundledirslen = strlen(bundledirs);
1025         if (len > bundledirslen)
1026         {
1027             char *ptr = (dir + len) - bundledirslen;
1028             if (strcasecmp(ptr, bundledirs) == 0)
1029                 *ptr = '\0';
1030         }
1031         #endif
1032         chdir(dir);
1033         free(dir);
1034     }
1035 }
1036 #endif
1037
1038
1039 int main(int argc, char **argv)
1040 {
1041 #ifndef __MINGW32__
1042     _argc = argc;
1043     _argv = argv;
1044 #endif
1045
1046     // !!! FIXME: we could use a Win32 API for this.  --ryan.
1047 #ifndef WIN32
1048     chdirToAppPath(argv[0]);
1049 #endif
1050
1051         LOGFUNC;
1052
1053         memset( &g_theKeys, 0, sizeof( KeyMap));
1054
1055     initSDLKeyTable();
1056
1057         try
1058         {
1059                 bool regnow = false;
1060                 {
1061                         Game game;
1062                         pgame = &game;
1063
1064                         //ofstream os("error.txt");
1065                         //os.close();
1066                         //ofstream os("log.txt");
1067                         //os.close();
1068
1069                         if (!SetUp (game))
1070                 return 42;
1071
1072                         while (!gDone&&!game.quit&&(!game.tryquit))
1073                         {
1074                                 if (IsFocused())
1075                                 {
1076                                         gameFocused = true;
1077
1078                                         // check windows messages
1079
1080                                         game.deltah = 0;
1081                                         game.deltav = 0;
1082                                         SDL_Event e;
1083                                         // message pump
1084                                         while( SDL_PollEvent( &e ) )
1085                                         {
1086                                                 if( e.type == SDL_QUIT )
1087                                                 {
1088                                                         gDone=true;
1089                                                         break;
1090                                                 }
1091                                                 sdlEventProc(e, game);
1092                                         }
1093
1094
1095                                         // game
1096                                         DoUpdate(game);
1097                                 }
1098                                 else
1099                                 {
1100                                         if (gameFocused)
1101                                         {
1102                                                 // allow game chance to pause
1103                                                 gameFocused = false;
1104                                                 DoUpdate(game);
1105                                         }
1106
1107                                         // game is not in focus, give CPU time to other apps by waiting for messages instead of 'peeking'
1108                     STUBBED("give up CPU but sniff the event queue");
1109                                 }
1110                         }
1111
1112                         regnow = game.registernow;
1113                 }
1114                 pgame = 0;
1115
1116                 CleanUp ();
1117 //              if(game.registernow){
1118                 if(regnow)
1119                 {
1120             #if (defined(__APPLE__) && defined(__MACH__))
1121             launch_web_browser("http://www.wolfire.com/purchase/lugaru/mac");
1122             #elif PLATFORM_LINUX
1123             launch_web_browser("http://www.wolfire.com/purchase/lugaru/linux");
1124             #else
1125             launch_web_browser("http://www.wolfire.com/purchase/lugaru/pc");
1126             #endif
1127                 }
1128
1129         #if PLATFORM_LINUX  // (this may not be necessary any more.)
1130         _exit(0);  // !!! FIXME: hack...crashes on exit!
1131         #endif
1132                 return 0;
1133         }
1134         catch (const std::exception& error)
1135         {
1136                 CleanUp();
1137
1138                 std::string e = "Caught exception: ";
1139                 e += error.what();
1140
1141                 LOG(e);
1142
1143                 MessageBox(g_windowHandle, error.what(), "ERROR", MB_OK | MB_ICONEXCLAMATION);
1144         }
1145
1146         CleanUp();
1147
1148         return -1;
1149 }
1150
1151
1152
1153         // --------------------------------------------------------------------------
1154
1155
1156
1157         bool selectDetail(int & width, int & height, int & bpp, int & detail)
1158         {
1159                 bool res = true;
1160
1161                 // currently with SDL, we just use whatever is requested
1162                 //  and don't care.  --ryan.
1163
1164
1165                 return res;
1166         }
1167
1168         extern int channels[100];
1169         extern OPENAL_SAMPLE * samp[100];
1170         extern OPENAL_STREAM * strm[20];
1171
1172         extern "C" void PlaySoundEx(int chan, OPENAL_SAMPLE *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused)
1173         {
1174                 const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]);
1175                 if (currSample && currSample == samp[chan])
1176                 {
1177                         if (OPENAL_GetPaused(channels[chan]))
1178                         {
1179                                 OPENAL_StopSound(channels[chan]);
1180                                 channels[chan] = OPENAL_FREE;
1181                         }
1182                         else if (OPENAL_IsPlaying(channels[chan]))
1183                         {
1184                                 int loop_mode = OPENAL_GetLoopMode(channels[chan]);
1185                                 if (loop_mode & OPENAL_LOOP_OFF)
1186                                 {
1187                                         channels[chan] = OPENAL_FREE;
1188                                 }
1189                         }
1190                 }
1191                 else
1192                 {
1193                         channels[chan] = OPENAL_FREE;
1194                 }
1195
1196                 channels[chan] = OPENAL_PlaySoundEx(channels[chan], sptr, dsp, startpaused);
1197                 if (channels[chan] < 0)
1198                 {
1199                         channels[chan] = OPENAL_PlaySoundEx(OPENAL_FREE, sptr, dsp, startpaused);
1200                 }
1201         }
1202
1203         extern "C" void PlayStreamEx(int chan, OPENAL_STREAM *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused)
1204         {
1205                 const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]);
1206                 if (currSample && currSample == OPENAL_Stream_GetSample(sptr))
1207                 {
1208                                 OPENAL_StopSound(channels[chan]);
1209                                 OPENAL_Stream_Stop(sptr);
1210                 }
1211                 else
1212                 {
1213                         OPENAL_Stream_Stop(sptr);
1214                         channels[chan] = OPENAL_FREE;
1215                 }
1216
1217                 channels[chan] = OPENAL_Stream_PlayEx(channels[chan], sptr, dsp, startpaused);
1218                 if (channels[chan] < 0)
1219                 {
1220                         channels[chan] = OPENAL_Stream_PlayEx(OPENAL_FREE, sptr, dsp, startpaused);
1221                 }
1222         }
1223
1224
1225         bool LoadImage(const char * fname, TGAImageRec & tex)
1226         {
1227                 bool res = true;
1228
1229                 if ( tex.data == NULL )
1230                 {
1231                         return false;
1232                 }
1233
1234
1235         res = load_image(fname, tex);
1236
1237
1238                 return res;
1239         }
1240
1241         void ScreenShot(const char * fname)
1242         {
1243
1244         save_image(fname);
1245
1246         }
1247
1248
1249
1250 static bool load_image(const char *file_name, TGAImageRec &tex)
1251 {
1252     const char *ptr = strrchr((char *)file_name, '.');
1253     if (ptr)
1254     {
1255         if (strcasecmp(ptr+1, "png") == 0)
1256             return load_png(file_name, tex);
1257         else if (strcasecmp(ptr+1, "jpg") == 0)
1258             return load_jpg(file_name, tex);
1259     }
1260
1261     STUBBED("Unsupported image type");
1262     return false;
1263 }
1264
1265
1266 struct my_error_mgr {
1267   struct jpeg_error_mgr pub;    /* "public" fields */
1268   jmp_buf setjmp_buffer;        /* for return to caller */
1269 };
1270 typedef struct my_error_mgr * my_error_ptr;
1271
1272
1273 static void my_error_exit(j_common_ptr cinfo)
1274 {
1275         struct my_error_mgr *err = (struct my_error_mgr *)cinfo->err;
1276         longjmp(err->setjmp_buffer, 1);
1277 }
1278
1279 /* stolen from public domain example.c code in libjpg distribution. */
1280 static bool load_jpg(const char *file_name, TGAImageRec &tex)
1281 {
1282     struct jpeg_decompress_struct cinfo;
1283     struct my_error_mgr jerr;
1284     JSAMPROW buffer[1];         /* Output row buffer */
1285     int row_stride;             /* physical row width in output buffer */
1286     FILE *infile = fopen(file_name, "rb");
1287
1288     if (infile == NULL)
1289         return false;
1290
1291     cinfo.err = jpeg_std_error(&jerr.pub);
1292     jerr.pub.error_exit = my_error_exit;
1293     if (setjmp(jerr.setjmp_buffer)) {
1294         jpeg_destroy_decompress(&cinfo);
1295         fclose(infile);
1296         return false;
1297     }
1298
1299     jpeg_create_decompress(&cinfo);
1300     jpeg_stdio_src(&cinfo, infile);
1301     (void) jpeg_read_header(&cinfo, TRUE);
1302
1303     cinfo.out_color_space = JCS_RGB;
1304     cinfo.quantize_colors = 0;
1305     (void) jpeg_calc_output_dimensions(&cinfo);
1306     (void) jpeg_start_decompress(&cinfo);
1307
1308     row_stride = cinfo.output_width * cinfo.output_components;
1309     tex.sizeX = cinfo.output_width;
1310     tex.sizeY = cinfo.output_height;
1311     tex.bpp = 24;
1312
1313     while (cinfo.output_scanline < cinfo.output_height) {
1314         buffer[0] = (JSAMPROW)(char *)tex.data +
1315                         ((cinfo.output_height-1) - cinfo.output_scanline) * row_stride;
1316         (void) jpeg_read_scanlines(&cinfo, buffer, 1);
1317     }
1318
1319     (void) jpeg_finish_decompress(&cinfo);
1320     jpeg_destroy_decompress(&cinfo);
1321     fclose(infile);
1322
1323     return true;
1324 }
1325
1326
1327 /* stolen from public domain example.c code in libpng distribution. */
1328 static bool load_png(const char *file_name, TGAImageRec &tex)
1329 {
1330     bool hasalpha = false;
1331     png_structp png_ptr = NULL;
1332     png_infop info_ptr = NULL;
1333     png_uint_32 width, height;
1334     int bit_depth, color_type, interlace_type;
1335     png_byte **rows = NULL;
1336     bool retval = false;
1337     png_byte **row_pointers = NULL;
1338     FILE *fp = fopen(file_name, "rb");
1339
1340     if (fp == NULL)
1341         return(NULL);
1342
1343     png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
1344     if (png_ptr == NULL)
1345         goto png_done;
1346
1347     info_ptr = png_create_info_struct(png_ptr);
1348     if (info_ptr == NULL)
1349         goto png_done;
1350
1351     if (setjmp(png_jmpbuf(png_ptr)))
1352         goto png_done;
1353
1354     png_init_io(png_ptr, fp);
1355     png_read_png(png_ptr, info_ptr,
1356                  PNG_TRANSFORM_STRIP_16 | PNG_TRANSFORM_PACKING,
1357                  NULL);
1358     png_get_IHDR(png_ptr, info_ptr, &width, &height,
1359                  &bit_depth, &color_type, &interlace_type, NULL, NULL);
1360
1361     if (bit_depth != 8)  // transform SHOULD handle this...
1362         goto png_done;
1363
1364     if (color_type & PNG_COLOR_MASK_PALETTE)  // !!! FIXME?
1365         goto png_done;
1366
1367     if ((color_type & PNG_COLOR_MASK_COLOR) == 0)  // !!! FIXME?
1368         goto png_done;
1369
1370     hasalpha = ((color_type & PNG_COLOR_MASK_ALPHA) != 0);
1371     row_pointers = png_get_rows(png_ptr, info_ptr);
1372     if (!row_pointers)
1373         goto png_done;
1374
1375     if (!hasalpha)
1376     {
1377         png_byte *dst = tex.data;
1378         for (int i = height-1; i >= 0; i--)
1379         {
1380             png_byte *src = row_pointers[i];
1381             for (int j = 0; j < width; j++)
1382             {
1383                 dst[0] = src[0];
1384                 dst[1] = src[1];
1385                 dst[2] = src[2];
1386                 dst[3] = 0xFF;
1387                 src += 3;
1388                 dst += 4;
1389             }
1390         }
1391     }
1392
1393     else
1394     {
1395         png_byte *dst = tex.data;
1396         int pitch = width * 4;
1397         for (int i = height-1; i >= 0; i--, dst += pitch)
1398             memcpy(dst, row_pointers[i], pitch);
1399     }
1400
1401     tex.sizeX = width;
1402     tex.sizeY = height;
1403     tex.bpp = 32;
1404     retval = true;
1405
1406 png_done:
1407     png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
1408     if (fp)
1409         fclose(fp);
1410     return (retval);
1411 }
1412
1413
1414 static bool save_image(const char *file_name)
1415 {
1416     const char *ptr = strrchr((char *)file_name, '.');
1417     if (ptr)
1418     {
1419         if (strcasecmp(ptr+1, "png") == 0)
1420             return save_png(file_name);
1421     }
1422
1423     STUBBED("Unsupported image type");
1424     return false;
1425 }
1426
1427
1428 static bool save_png(const char *file_name)
1429 {
1430     FILE *fp = NULL;
1431     png_structp png_ptr = NULL;
1432     png_infop info_ptr = NULL;
1433     bool retval = false;
1434
1435     fp = fopen(file_name, "wb");
1436     if (fp == NULL)
1437         return false;
1438
1439     png_bytep *row_pointers = new png_bytep[kContextHeight];
1440     png_bytep screenshot = new png_byte[kContextWidth * kContextHeight * 3];
1441     if ((!screenshot) || (!row_pointers))
1442         goto save_png_done;
1443
1444     glGetError();
1445     glReadPixels(0, 0, kContextWidth, kContextHeight,
1446                  GL_RGB, GL_UNSIGNED_BYTE, screenshot);
1447     if (glGetError() != GL_NO_ERROR)
1448         goto save_png_done;
1449
1450     for (int i = 0; i < kContextHeight; i++)
1451         row_pointers[i] = screenshot + ((kContextWidth * ((kContextHeight-1) - i)) * 3);
1452
1453     png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
1454     if (png_ptr == NULL)
1455         goto save_png_done;
1456
1457     info_ptr = png_create_info_struct(png_ptr);
1458     if (info_ptr == NULL)
1459         goto save_png_done;
1460
1461     if (setjmp(png_jmpbuf(png_ptr)))
1462         goto save_png_done;
1463
1464     png_init_io(png_ptr, fp);
1465
1466     if (setjmp(png_jmpbuf(png_ptr)))
1467         goto save_png_done;
1468
1469     png_set_IHDR(png_ptr, info_ptr, kContextWidth, kContextHeight,
1470                  8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
1471                  PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
1472
1473     png_write_info(png_ptr, info_ptr);
1474
1475     if (setjmp(png_jmpbuf(png_ptr)))
1476         goto save_png_done;
1477
1478         png_write_image(png_ptr, row_pointers);
1479
1480         if (setjmp(png_jmpbuf(png_ptr)))
1481         goto save_png_done;
1482
1483     png_write_end(png_ptr, NULL);
1484     retval = true;
1485
1486 save_png_done:
1487     png_destroy_write_struct(&png_ptr, &info_ptr);
1488     delete[] screenshot;
1489     delete[] row_pointers;
1490     if (fp)
1491         fclose(fp);
1492     if (!retval)
1493         unlink(ConvertFileName(file_name));
1494     return retval;
1495 }
1496
1497
1498