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     SDL_GetMouseState(&(pt->x), &(pt->y));
 200 }
 201 #define GetCursorPos(x) sdlGetCursorPos(x)
 202 #define SetCursorPos(x, y) SDL_WarpMouse(x, y)
 203 #define ScreenToClient(x, pt)
 204 #define ClientToScreen(x, pt)
 205 #ifdef MessageBox
 206 #undef MessageBox
 207 #endif
 208 #define MessageBox(hwnd,text,title,flags) STUBBED("msgbox")
 209
 210
 211 Point delta;
 212
 213 static bool g_button, fullscreen = true;
 214
 215
 216 // Menu defs
 217 enum
 218 {
 219         kFileQuit = 1
 220 };
 221
 222 enum
 223 {
 224         kForegroundSleep = 10,
 225         kBackgroundSleep = 10000
 226 };
 227
 228
 229 int kContextWidth;
 230 int kContextHeight;
 231
 232 const RGBColor rgbBlack = { 0x0000, 0x0000, 0x0000 };
 233
 234 GLuint gFontList;
 235 char gcstrMode [256] = "";
 236
 237 UInt32 gSleepTime = kForegroundSleep;
 238 Boolean gDone = false, gfFrontProcess = true;
 239
 240 Game * pgame = 0;
 241
 242 #ifndef __MINGW32__
 243 static int _argc = 0;
 244 static char **_argv = NULL;
 245 #endif
 246
 247 bool cmdline(const char *cmd)
 248 {
 249     for (int i = 1; i < _argc; i++)
 250     {
 251         char *arg = _argv[i];
 252         while (*arg == '-')
 253             arg++;
 254         if (strcasecmp(arg, cmd) == 0)
 255             return true;
 256     }
 257
 258     return false;
 259 }
 260
 261
 262 // --------------------------------------------------------------------------
 263
 264 void ReportError (char * strError)
 265 {
 266 #ifdef _MSC_VER  // !!! FIXME.  --ryan.
 267         throw std::exception( strError);
 268 #endif
 269
 270         /*      char errMsgCStr [256];
 271         Str255 strErr;
 272
 273         sprintf (errMsgCStr, "%s", strError);
 274
 275         // out as debug string
 276         CToPStr (strErr, errMsgCStr);
 277         DebugStr (strErr);
 278         */
 279 }
 280
 281 void SetupDSpFullScreen ()
 282 {
 283 }
 284
 285
 286 void ShutdownDSp ()
 287 {
 288 }
 289
 290
 291 //-----------------------------------------------------------------------------------------------------------------------
 292
 293 // OpenGL Drawing
 294
 295 void DrawGL (Game & game)
 296 {
 297         if ( stereomode == stereoNone ) {
 298                 game.DrawGLScene(stereoCenter);
 299         } else {
 300                 game.DrawGLScene(stereoLeft);
 301                 game.DrawGLScene(stereoRight);
 302         }
 303 }
 304
 305
 306 static KeyMap g_theKeys;
 307
 308 void SetKey( int key)
 309 {
 310     g_theKeys[ key >> 3] |= (1 << (key & 7));
 311 }
 312
 313 void ClearKey( int key)
 314 {
 315     g_theKeys[ key >> 3] &= (0xff ^ (1 << (key & 7)));
 316 }
 317
 318 void GetKeys(  unsigned char theKeys[16])
 319 {
 320     memcpy( theKeys, &g_theKeys, 16);
 321 }
 322
 323 Boolean Button()
 324 {
 325     return g_button;
 326 }
 327
 328
 329 #define MAX_SDLKEYS SDLK_LAST
 330 static unsigned short KeyTable[MAX_SDLKEYS];
 331
 332 static void initSDLKeyTable(void)
 333 {
 334     memset(KeyTable, 0xFF, sizeof (KeyTable));
 335     KeyTable[SDLK_BACKSPACE] = MAC_DELETE_KEY;
 336     KeyTable[SDLK_TAB] = MAC_TAB_KEY;
 337     KeyTable[SDLK_RETURN] = MAC_RETURN_KEY;
 338     KeyTable[SDLK_ESCAPE] = MAC_ESCAPE_KEY;
 339     KeyTable[SDLK_SPACE] = MAC_SPACE_KEY;
 340     KeyTable[SDLK_PAGEUP] = MAC_PAGE_UP_KEY;
 341     KeyTable[SDLK_PAGEDOWN] = MAC_PAGE_DOWN_KEY;
 342     KeyTable[SDLK_END] = MAC_END_KEY;
 343     KeyTable[SDLK_HOME] = MAC_HOME_KEY;
 344     KeyTable[SDLK_LEFT] = MAC_ARROW_LEFT_KEY;
 345     KeyTable[SDLK_UP] = MAC_ARROW_UP_KEY;
 346     KeyTable[SDLK_RIGHT] = MAC_ARROW_RIGHT_KEY;
 347     KeyTable[SDLK_DOWN] = MAC_ARROW_DOWN_KEY;
 348     KeyTable[SDLK_INSERT] = MAC_INSERT_KEY;
 349     KeyTable[SDLK_DELETE] = MAC_DEL_KEY;
 350     KeyTable[SDLK_0] = MAC_0_KEY;
 351     KeyTable[SDLK_1] = MAC_1_KEY;
 352     KeyTable[SDLK_2] = MAC_2_KEY;
 353     KeyTable[SDLK_3] = MAC_3_KEY;
 354     KeyTable[SDLK_4] = MAC_4_KEY;
 355     KeyTable[SDLK_5] = MAC_5_KEY;
 356     KeyTable[SDLK_6] = MAC_6_KEY;
 357     KeyTable[SDLK_7] = MAC_7_KEY;
 358     KeyTable[SDLK_8] = MAC_8_KEY;
 359     KeyTable[SDLK_9] = MAC_9_KEY;
 360     KeyTable[SDLK_a] = MAC_A_KEY;
 361     KeyTable[SDLK_b] = MAC_B_KEY;
 362     KeyTable[SDLK_c] = MAC_C_KEY;
 363     KeyTable[SDLK_d] = MAC_D_KEY;
 364     KeyTable[SDLK_e] = MAC_E_KEY;
 365     KeyTable[SDLK_f] = MAC_F_KEY;
 366     KeyTable[SDLK_g] = MAC_G_KEY;
 367     KeyTable[SDLK_h] = MAC_H_KEY;
 368     KeyTable[SDLK_i] = MAC_I_KEY;
 369     KeyTable[SDLK_j] = MAC_J_KEY;
 370     KeyTable[SDLK_k] = MAC_K_KEY;
 371     KeyTable[SDLK_l] = MAC_L_KEY;
 372     KeyTable[SDLK_m] = MAC_M_KEY;
 373     KeyTable[SDLK_n] = MAC_N_KEY;
 374     KeyTable[SDLK_o] = MAC_O_KEY;
 375     KeyTable[SDLK_p] = MAC_P_KEY;
 376     KeyTable[SDLK_q] = MAC_Q_KEY;
 377     KeyTable[SDLK_r] = MAC_R_KEY;
 378     KeyTable[SDLK_s] = MAC_S_KEY;
 379     KeyTable[SDLK_t] = MAC_T_KEY;
 380     KeyTable[SDLK_u] = MAC_U_KEY;
 381     KeyTable[SDLK_v] = MAC_V_KEY;
 382     KeyTable[SDLK_w] = MAC_W_KEY;
 383     KeyTable[SDLK_x] = MAC_X_KEY;
 384     KeyTable[SDLK_y] = MAC_Y_KEY;
 385     KeyTable[SDLK_z] = MAC_Z_KEY;
 386     KeyTable[SDLK_KP0] = MAC_NUMPAD_0_KEY;
 387     KeyTable[SDLK_KP1] = MAC_NUMPAD_1_KEY;
 388     KeyTable[SDLK_KP2] = MAC_NUMPAD_2_KEY;
 389     KeyTable[SDLK_KP3] = MAC_NUMPAD_3_KEY;
 390     KeyTable[SDLK_KP4] = MAC_NUMPAD_4_KEY;
 391     KeyTable[SDLK_KP5] = MAC_NUMPAD_5_KEY;
 392     KeyTable[SDLK_KP6] = MAC_NUMPAD_6_KEY;
 393     KeyTable[SDLK_KP7] = MAC_NUMPAD_7_KEY;
 394     KeyTable[SDLK_KP8] = MAC_NUMPAD_8_KEY;
 395     KeyTable[SDLK_KP9] = MAC_NUMPAD_9_KEY;
 396     KeyTable[SDLK_KP_MULTIPLY] = MAC_NUMPAD_ASTERISK_KEY;
 397     KeyTable[SDLK_KP_PLUS] = MAC_NUMPAD_PLUS_KEY;
 398     KeyTable[SDLK_KP_ENTER] = MAC_NUMPAD_ENTER_KEY;
 399     KeyTable[SDLK_KP_MINUS] = MAC_NUMPAD_MINUS_KEY;
 400     KeyTable[SDLK_KP_PERIOD] = MAC_NUMPAD_PERIOD_KEY;
 401     KeyTable[SDLK_KP_DIVIDE] = MAC_NUMPAD_SLASH_KEY;
 402     KeyTable[SDLK_F1] = MAC_F1_KEY;
 403     KeyTable[SDLK_F2] = MAC_F2_KEY;
 404     KeyTable[SDLK_F3] = MAC_F3_KEY;
 405     KeyTable[SDLK_F4] = MAC_F4_KEY;
 406     KeyTable[SDLK_F5] = MAC_F5_KEY;
 407     KeyTable[SDLK_F6] = MAC_F6_KEY;
 408     KeyTable[SDLK_F7] = MAC_F7_KEY;
 409     KeyTable[SDLK_F8] = MAC_F8_KEY;
 410     KeyTable[SDLK_F9] = MAC_F9_KEY;
 411     KeyTable[SDLK_F10] = MAC_F10_KEY;
 412     KeyTable[SDLK_F11] = MAC_F11_KEY;
 413     KeyTable[SDLK_F12] = MAC_F12_KEY;
 414     KeyTable[SDLK_SEMICOLON] = MAC_SEMICOLON_KEY;
 415     KeyTable[SDLK_PLUS] = MAC_PLUS_KEY;
 416     KeyTable[SDLK_COMMA] = MAC_COMMA_KEY;
 417     KeyTable[SDLK_MINUS] = MAC_MINUS_KEY;
 418     KeyTable[SDLK_PERIOD] = MAC_PERIOD_KEY;
 419     KeyTable[SDLK_SLASH] = MAC_SLASH_KEY;
 420     KeyTable[SDLK_BACKQUOTE] = MAC_TILDE_KEY;
 421     KeyTable[SDLK_LEFTBRACKET] = MAC_LEFTBRACKET_KEY;
 422     KeyTable[SDLK_BACKSLASH] = MAC_BACKSLASH_KEY;
 423     KeyTable[SDLK_RIGHTBRACKET] = MAC_RIGHTBRACKET_KEY;
 424     KeyTable[SDLK_QUOTE] = MAC_APOSTROPHE_KEY;
 425 }
 426
 427 static inline int clamp_sdl_mouse_button(Uint8 button)
 428 {
 429     if (button == 2)   // right mouse button is button 3 in SDL.
 430         button = 3;
 431     else if (button == 3)
 432         button = 2;
 433
 434     if ((button >= 1) && (button <= 3))
 435         return button - 1;
 436     return -1;
 437 }
 438
 439 static void sdlEventProc(const SDL_Event &e, Game &game)
 440 {
 441     int val;
 442     bool skipkey = false;
 443     SDLMod mod;
 444
 445     switch(e.type)
 446         {
 447         case SDL_MOUSEMOTION:
 448             game.deltah += e.motion.xrel;
 449             game.deltav += e.motion.yrel;
 450             return;
 451
 452                 case SDL_MOUSEBUTTONDOWN:
 453                         {
 454                 val = clamp_sdl_mouse_button(e.button.button);
 455                 if ((val >= 0) && (val <= 2))
 456                 {
 457                     if (val == 0)
 458                                     g_button = true;
 459                                 buttons[val] = true;
 460                 }
 461                         }
 462                         return;
 463
 464                 case SDL_MOUSEBUTTONUP:
 465                         {
 466                 val = clamp_sdl_mouse_button(e.button.button);
 467                 if ((val >= 0) && (val <= 2))
 468                 {
 469                     if (val == 0)
 470                                     g_button = false;
 471                                 buttons[val] = false;
 472                 }
 473                         }
 474             return;
 475
 476         case SDL_KEYDOWN:
 477             if (e.key.keysym.sym == SDLK_g)
 478             {
 479                 if (e.key.keysym.mod & KMOD_CTRL)
 480                 {
 481                     skipkey = true;
 482                     SDL_GrabMode mode = SDL_GRAB_ON;
 483                     if ((SDL_GetVideoSurface()->flags & SDL_FULLSCREEN) == 0)
 484                     {
 485                         mode = SDL_WM_GrabInput(SDL_GRAB_QUERY);
 486                         mode = (mode==SDL_GRAB_ON) ? SDL_GRAB_OFF:SDL_GRAB_ON;
 487                     }
 488                     SDL_WM_GrabInput(mode);
 489                 }
 490             }
 491
 492             else if (e.key.keysym.sym == SDLK_RETURN)
 493             {
 494                 if (e.key.keysym.mod & KMOD_ALT)
 495                 {
 496                     skipkey = true;
 497                     SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
 498                 }
 499             }
 500
 501             if ((!skipkey) && (e.key.keysym.sym < SDLK_LAST))
 502             {
 503                 if (KeyTable[e.key.keysym.sym] != 0xffff)
 504                     SetKey(KeyTable[e.key.keysym.sym]);
 505             }
 506
 507             mod = SDL_GetModState();
 508             if (mod & KMOD_CTRL)
 509                 SetKey(MAC_CONTROL_KEY);
 510             if (mod & KMOD_ALT)
 511                 SetKey(MAC_OPTION_KEY);
 512             if (mod & KMOD_META)
 513                 SetKey(MAC_COMMAND_KEY);
 514             if (mod & KMOD_SHIFT)
 515                 SetKey(MAC_SHIFT_KEY);
 516             if (mod & KMOD_CAPS)
 517                 SetKey(MAC_CAPS_LOCK_KEY);
 518
 519             return;
 520
 521         case SDL_KEYUP:
 522             if (e.key.keysym.sym < SDLK_LAST)
 523             {
 524                 if (KeyTable[e.key.keysym.sym] != 0xffff)
 525                     ClearKey(KeyTable[e.key.keysym.sym]);
 526             }
 527
 528             mod = SDL_GetModState();
 529             if ((mod & KMOD_CTRL) == 0)
 530                 ClearKey(MAC_CONTROL_KEY);
 531             if ((mod & KMOD_ALT) == 0)
 532                 ClearKey(MAC_OPTION_KEY);
 533             if ((mod & KMOD_META) == 0)
 534                 ClearKey(MAC_COMMAND_KEY);
 535             if ((mod & KMOD_SHIFT) == 0)
 536                 ClearKey(MAC_SHIFT_KEY);
 537             if ((mod & KMOD_CAPS) == 0)
 538                 ClearKey(MAC_CAPS_LOCK_KEY);
 539             return;
 540     }
 541 }
 542
 543
 544 // --------------------------------------------------------------------------
 545
 546 static Point gMidPoint;
 547
 548 Boolean SetUp (Game & game)
 549 {
 550         char string[10];
 551
 552         LOGFUNC;
 553
 554         randSeed = UpTime().lo;
 555
 556         osx = 0;
 557         cellophane=0;
 558         texdetail=4;
 559         terraindetail=2;
 560         slomospeed=0.25;
 561         slomofreq=8012;
 562         numplayers=1;
 563
 564         DefaultSettings(game);
 565
 566         selectDetail(kContextWidth, kContextHeight, kBitsPerPixel, detail);
 567
 568         if(!LoadSettings(game)) {
 569                 fprintf(stderr, "Failed to load config, creating default\n");
 570                 SaveSettings(game);
 571         }
 572         if(kBitsPerPixel!=32&&kBitsPerPixel!=16){
 573                 kBitsPerPixel=16;
 574         }
 575
 576
 577         selectDetail(kContextWidth, kContextHeight, kBitsPerPixel, detail);
 578
 579         SetupDSpFullScreen();
 580
 581
 582     if (!SDL_WasInit(SDL_INIT_VIDEO))
 583     {
 584         if (SDL_Init(SDL_INIT_VIDEO) == -1)
 585         {
 586             fprintf(stderr, "SDL_Init() failed: %s\n", SDL_GetError());
 587             return false;
 588         }
 589
 590         if (SDL_GL_LoadLibrary(NULL) == -1)
 591         {
 592             fprintf(stderr, "SDL_GL_LoadLibrary() failed: %s\n", SDL_GetError());
 593             SDL_Quit();
 594             return false;
 595         }
 596
 597         SDL_Rect **res = SDL_ListModes(NULL, SDL_FULLSCREEN|SDL_OPENGL);
 598         if ( (res == NULL) || (res == ((SDL_Rect **)-1)) || (res[0] == NULL) || (res[0]->w < 640) || (res[0]->h < 480) )
 599             res = hardcoded_resolutions;
 600
 601         // reverse list (it was sorted biggest to smallest by SDL)...
 602         int count;
 603         for (count = 0; res[count]; count++)
 604         {
 605             if ((res[count]->w < 640) || (res[count]->h < 480))
 606                 break;   // sane lower limit.
 607         }
 608
 609         static SDL_Rect *resolutions_block = NULL;
 610         resolutions_block = (SDL_Rect*) realloc(resolutions_block, sizeof (SDL_Rect) * count);
 611         resolutions = (SDL_Rect**) realloc(resolutions, sizeof (SDL_Rect *) * (count + 1));
 612         if ((resolutions_block == NULL) || (resolutions == NULL))
 613         {
 614             SDL_Quit();
 615             fprintf(stderr, "Out of memory!\n");
 616             return false;
 617         }
 618
 619         resolutions[count--] = NULL;
 620         for (int i = 0; count >= 0; i++, count--)
 621         {
 622             memcpy(&resolutions_block[count], res[i], sizeof (SDL_Rect));
 623             resolutions[count] = &resolutions_block[count];
 624         }
 625
 626         if (cmdline("showresolutions"))
 627         {
 628             printf("Resolutions we think are okay:\n");
 629             for (int i = 0; resolutions[i]; i++)
 630                 printf("  %d x %d\n", (int) resolutions[i]->w, (int) resolutions[i]->h);
 631         }
 632     }
 633
 634     Uint32 sdlflags = SDL_OPENGL;
 635     if (!cmdline("windowed"))
 636         sdlflags |= SDL_FULLSCREEN;
 637
 638     SDL_WM_SetCaption("Lugaru", "Lugaru");
 639
 640     SDL_ShowCursor(0);
 641
 642     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 643     SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 1);
 644
 645     if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
 646     {
 647         fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
 648         fprintf(stderr, "forcing 640x480...\n");
 649         kContextWidth = 640;
 650         kContextHeight = 480;
 651         if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
 652         {
 653             fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
 654             fprintf(stderr, "forcing 640x480 windowed mode...\n");
 655             sdlflags &= ~SDL_FULLSCREEN;
 656             if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
 657             {
 658                 fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
 659                 return false;
 660             }
 661         }
 662     }
 663
 664     int dblbuf = 0;
 665     if ((SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &dblbuf) == -1) || (!dblbuf))
 666     {
 667         fprintf(stderr, "Failed to get double buffered GL context!\n");
 668         SDL_Quit();
 669         return false;
 670     }
 671
 672     if (!lookup_all_glsyms())
 673     {
 674         SDL_Quit();
 675         return false;
 676     }
 677
 678     if (!cmdline("nomousegrab"))
 679         SDL_WM_GrabInput(SDL_GRAB_ON);
 680
 681
 682         glClear( GL_COLOR_BUFFER_BIT );
 683         swap_gl_buffers();
 684
 685         // clear all states
 686         glDisable( GL_ALPHA_TEST);
 687         glDisable( GL_BLEND);
 688         glDisable( GL_DEPTH_TEST);
 689         //      glDisable( GL_DITHER);
 690         glDisable( GL_FOG);
 691         glDisable( GL_LIGHTING);
 692         glDisable( GL_LOGIC_OP);
 693         glDisable( GL_TEXTURE_1D);
 694         glDisable( GL_TEXTURE_2D);
 695         glPixelTransferi( GL_MAP_COLOR, GL_FALSE);
 696         glPixelTransferi( GL_RED_SCALE, 1);
 697         glPixelTransferi( GL_RED_BIAS, 0);
 698         glPixelTransferi( GL_GREEN_SCALE, 1);
 699         glPixelTransferi( GL_GREEN_BIAS, 0);
 700         glPixelTransferi( GL_BLUE_SCALE, 1);
 701         glPixelTransferi( GL_BLUE_BIAS, 0);
 702         glPixelTransferi( GL_ALPHA_SCALE, 1);
 703         glPixelTransferi( GL_ALPHA_BIAS, 0);
 704
 705         // set initial rendering states
 706         glShadeModel( GL_SMOOTH);
 707         glClearDepth( 1.0f);
 708         glDepthFunc( GL_LEQUAL);
 709         glDepthMask( GL_TRUE);
 710         //      glDepthRange( FRONT_CLIP, BACK_CLIP);
 711         glEnable( GL_DEPTH_TEST);
 712         glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
 713         glCullFace( GL_FRONT);
 714         glEnable( GL_CULL_FACE);
 715         glEnable( GL_LIGHTING);
 716 //      glEnable( GL_LIGHT_MODEL_AMBIENT);
 717         glEnable( GL_DITHER);
 718         glEnable( GL_COLOR_MATERIAL);
 719         glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 720         glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 721         glAlphaFunc( GL_GREATER, 0.5f);
 722
 723         GLint width = kContextWidth;
 724         GLint height = kContextHeight;
 725         gMidPoint.h = width / 2;
 726         gMidPoint.v = height / 2;
 727         screenwidth=width;
 728         screenheight=height;
 729
 730         game.newdetail=detail;
 731         game.newscreenwidth=screenwidth;
 732         game.newscreenheight=screenheight;
 733
 734         if ( CanInitStereo(stereomode) ) {
 735                 InitStereo(stereomode);
 736         } else {
 737                 fprintf(stderr, "Failed to initialize stereo, disabling.\n");
 738                 stereomode = stereoNone;
 739         }
 740
 741         game.InitGame();
 742
 743         return true;
 744 }
 745
 746
 747 static void DoMouse(Game & game)
 748 {
 749
 750         if(mainmenu||(abs(game.deltah)<10*realmultiplier*1000&&abs(game.deltav)<10*realmultiplier*1000))
 751         {
 752                 game.deltah *= usermousesensitivity;
 753                 game.deltav *= usermousesensitivity;
 754                 game.mousecoordh += game.deltah;
 755                 game.mousecoordv += game.deltav;
 756         if (game.mousecoordh < 0)
 757             game.mousecoordh = 0;
 758         else if (game.mousecoordh >= kContextWidth)
 759             game.mousecoordh = kContextWidth - 1;
 760         if (game.mousecoordv < 0)
 761             game.mousecoordv = 0;
 762         else if (game.mousecoordv >= kContextHeight)
 763             game.mousecoordv = kContextHeight - 1;
 764         }
 765
 766 }
 767
 768
 769
 770 // --------------------------------------------------------------------------
 771
 772 void DoKey (SInt8 theKey, SInt8 theCode)
 773 {
 774         // do nothing
 775 }
 776
 777 // --------------------------------------------------------------------------
 778
 779
 780
 781 void DoFrameRate (int update)
 782 {
 783         static long frames = 0;
 784
 785         static AbsoluteTime time = {0,0};
 786         static AbsoluteTime frametime = {0,0};
 787         AbsoluteTime currTime = UpTime ();
 788         double deltaTime = (float) AbsoluteDeltaToDuration (currTime, frametime);
 789
 790         if (0 > deltaTime)      // if negative microseconds
 791                 deltaTime /= -1000000.0;
 792         else                            // else milliseconds
 793                 deltaTime /= 1000.0;
 794
 795         multiplier=deltaTime;
 796         if(multiplier<.001) multiplier=.001;
 797         if(multiplier>10) multiplier=10;
 798         if(update) frametime = currTime;        // reset for next time interval
 799
 800         deltaTime = (float) AbsoluteDeltaToDuration (currTime, time);
 801
 802         if (0 > deltaTime)      // if negative microseconds
 803                 deltaTime /= -1000000.0;
 804         else                            // else milliseconds
 805                 deltaTime /= 1000.0;
 806         frames++;
 807         if (0.001 <= deltaTime) // has update interval passed
 808         {
 809                 if(update){
 810                         time = currTime;        // reset for next time interval
 811                         frames = 0;
 812                 }
 813         }
 814 }
 815
 816
 817 void DoUpdate (Game & game)
 818 {
 819         static float sps=200;
 820         static int count;
 821         static float oldmult;
 822
 823         DoFrameRate(1);
 824         if(multiplier>.6)multiplier=.6;
 825
 826         game.fps=1/multiplier;
 827
 828         count = multiplier*sps;
 829         if(count<2)count=2;
 830         //if(count>10)count=10;
 831
 832         realmultiplier=multiplier;
 833         multiplier*=gamespeed;
 834         if(difficulty==1)multiplier*=.9;
 835         if(difficulty==0)multiplier*=.8;
 836
 837         if(game.loading==4)multiplier*=.00001;
 838         //multiplier*.9;
 839         if(slomo&&!mainmenu)multiplier*=slomospeed;
 840         //if(freeze)multiplier*=0.00001;
 841         oldmult=multiplier;
 842         multiplier/=(float)count;
 843
 844         DoMouse(game);
 845
 846         game.TickOnce();
 847
 848         for(int i=0;i<count;i++)
 849         {
 850                 game.Tick();
 851         }
 852         multiplier=oldmult;
 853
 854         game.TickOnceAfter();
 855 /* - Debug code to test how many channels were active on average per frame
 856         static long frames = 0;
 857
 858         static AbsoluteTime start = {0,0};
 859         AbsoluteTime currTime = UpTime ();
 860         static int num_channels = 0;
 861
 862         num_channels += OPENAL_GetChannelsPlaying();
 863         double deltaTime = (float) AbsoluteDeltaToDuration (currTime, start);
 864
 865         if (0 > deltaTime)      // if negative microseconds
 866                 deltaTime /= -1000000.0;
 867         else                            // else milliseconds
 868                 deltaTime /= 1000.0;
 869
 870         ++frames;
 871
 872         if (deltaTime >= 1)
 873         {
 874                 start = currTime;
 875                 float avg_channels = (float)num_channels / (float)frames;
 876
 877                 ofstream opstream("log.txt",ios::app);
 878                 opstream << "Average frame count: ";
 879                 opstream << frames;
 880                 opstream << " frames - ";
 881                 opstream << avg_channels;
 882                 opstream << " per frame.\n";
 883                 opstream.close();
 884
 885                 frames = 0;
 886                 num_channels = 0;
 887         }
 888 */
 889         DrawGL (game);
 890 }
 891
 892 // --------------------------------------------------------------------------
 893
 894
 895 void CleanUp (void)
 896 {
 897         LOGFUNC;
 898
 899 //      game.Dispose();
 900
 901
 902
 903
 904     SDL_Quit();
 905     #define GL_FUNC(ret,fn,params,call,rt) p##fn = NULL;
 906     #include "glstubs.h"
 907     #undef GL_FUNC
 908     // cheat here...static destructors are calling glDeleteTexture() after
 909     //  the context is destroyed and libGL unloaded by SDL_Quit().
 910     pglDeleteTextures = glDeleteTextures_doNothing;
 911
 912 }
 913
 914 // --------------------------------------------------------------------------
 915
 916 static bool IsFocused()
 917 {
 918     return ((SDL_GetAppState() & SDL_APPINPUTFOCUS) != 0);
 919 }
 920
 921
 922 static void launch_web_browser(const char *url)
 923 {
 924 #ifdef WIN32
 925     ShellExecute(NULL, "open", url, NULL, NULL, SW_SHOWNORMAL);
 926
 927 #elif (defined(__APPLE__) && defined(__MACH__))
 928     const char *fmt = "open '%s'";
 929     const size_t len = strlen(fmt) + strlen(url) + 16;
 930     char *buf = new char[len];
 931     snprintf(buf, len, fmt, url);
 932     system(buf);
 933     delete[] buf;
 934
 935 #elif PLATFORM_LINUX
 936     const char *fmt = "PATH=$PATH:. xdg-open '%s'";
 937     const size_t len = strlen(fmt) + strlen(url) + 16;
 938     char *buf = new char[len];
 939     snprintf(buf, len, fmt, url);
 940     system(buf);
 941     delete[] buf;
 942 #endif
 943 }
 944
 945
 946 #ifndef WIN32
 947 // (code lifted from physfs: http://icculus.org/physfs/ ... zlib license.)
 948 static char *findBinaryInPath(const char *bin, char *envr)
 949 {
 950     size_t alloc_size = 0;
 951     char *exe = NULL;
 952     char *start = envr;
 953     char *ptr;
 954
 955     do
 956     {
 957         size_t size;
 958         ptr = strchr(start, ':');  /* find next $PATH separator. */
 959         if (ptr)
 960             *ptr = '\0';
 961
 962         size = strlen(start) + strlen(bin) + 2;
 963         if (size > alloc_size)
 964         {
 965             char *x = (char *) realloc(exe, size);
 966             if (x == NULL)
 967             {
 968                 if (exe != NULL)
 969                     free(exe);
 970                 return(NULL);
 971             } /* if */
 972
 973             alloc_size = size;
 974             exe = x;
 975         } /* if */
 976
 977         /* build full binary path... */
 978         strcpy(exe, start);
 979         if ((exe[0] == '\0') || (exe[strlen(exe) - 1] != '/'))
 980             strcat(exe, "/");
 981         strcat(exe, bin);
 982
 983         if (access(exe, X_OK) == 0)  /* Exists as executable? We're done. */
 984         {
 985             strcpy(exe, start);  /* i'm lazy. piss off. */
 986             return(exe);
 987         } /* if */
 988
 989         start = ptr + 1;  /* start points to beginning of next element. */
 990     } while (ptr != NULL);
 991
 992     if (exe != NULL)
 993         free(exe);
 994
 995     return(NULL);  /* doesn't exist in path. */
 996 } /* findBinaryInPath */
 997
 998
 999 char *calcBaseDir(const char *argv0)
1000 {
1001     /* If there isn't a path on argv0, then look through the $PATH for it. */
1002     char *retval;
1003     char *envr;
1004
1005     const char *ptr = strrchr((char *)argv0, '/');
1006     if (strchr(argv0, '/'))
1007     {
1008         retval = strdup(argv0);
1009         if (retval)
1010             *((char *) strrchr(retval, '/')) = '\0';
1011         return(retval);
1012     }
1013
1014     envr = getenv("PATH");
1015     if (!envr) return NULL;
1016     envr = strdup(envr);
1017     if (!envr) return NULL;
1018     retval = findBinaryInPath(argv0, envr);
1019     free(envr);
1020     return(retval);
1021 }
1022
1023 static inline void chdirToAppPath(const char *argv0)
1024 {
1025     char *dir = calcBaseDir(argv0);
1026     if (dir)
1027     {
1028         #if (defined(__APPLE__) && defined(__MACH__))
1029         // Chop off /Contents/MacOS if it's at the end of the string, so we
1030         //  land in the base of the app bundle.
1031         const size_t len = strlen(dir);
1032         const char *bundledirs = "/Contents/MacOS";
1033         const size_t bundledirslen = strlen(bundledirs);
1034         if (len > bundledirslen)
1035         {
1036             char *ptr = (dir + len) - bundledirslen;
1037             if (strcasecmp(ptr, bundledirs) == 0)
1038                 *ptr = '\0';
1039         }
1040         #endif
1041         chdir(dir);
1042         free(dir);
1043     }
1044 }
1045 #endif
1046
1047
1048 int main(int argc, char **argv)
1049 {
1050 #ifndef __MINGW32__
1051     _argc = argc;
1052     _argv = argv;
1053 #endif
1054
1055     // !!! FIXME: we could use a Win32 API for this.  --ryan.
1056 #ifndef WIN32
1057     chdirToAppPath(argv[0]);
1058 #endif
1059
1060         LOGFUNC;
1061
1062         memset( &g_theKeys, 0, sizeof( KeyMap));
1063
1064     initSDLKeyTable();
1065
1066         try
1067         {
1068                 bool regnow = false;
1069                 {
1070                         Game game;
1071                         pgame = &game;
1072
1073                         //ofstream os("error.txt");
1074                         //os.close();
1075                         //ofstream os("log.txt");
1076                         //os.close();
1077
1078                         if (!SetUp (game))
1079                 return 42;
1080
1081                         while (!gDone&&!game.quit&&(!game.tryquit))
1082                         {
1083                                 if (IsFocused())
1084                                 {
1085                                         gameFocused = true;
1086
1087                                         // check windows messages
1088
1089                                         game.deltah = 0;
1090                                         game.deltav = 0;
1091                                         SDL_Event e;
1092                                         // message pump
1093                                         while( SDL_PollEvent( &e ) )
1094                                         {
1095                                                 if( e.type == SDL_QUIT )
1096                                                 {
1097                                                         gDone=true;
1098                                                         break;
1099                                                 }
1100                                                 sdlEventProc(e, game);
1101                                         }
1102
1103
1104                                         // game
1105                                         DoUpdate(game);
1106                                 }
1107                                 else
1108                                 {
1109                                         if (gameFocused)
1110                                         {
1111                                                 // allow game chance to pause
1112                                                 gameFocused = false;
1113                                                 DoUpdate(game);
1114                                         }
1115
1116                                         // game is not in focus, give CPU time to other apps by waiting for messages instead of 'peeking'
1117                                         SDL_ActiveEvent evt;
1118                                         SDL_WaitEvent((SDL_Event*)&evt);
1119                                         if (evt.type == SDL_ACTIVEEVENT && evt.gain == 1)
1120                                                 gameFocused = true;
1121                                         else if (evt.type == SDL_QUIT)
1122                                                 gDone = true;
1123                                 }
1124                         }
1125
1126                         regnow = game.registernow;
1127                 }
1128                 pgame = 0;
1129
1130                 CleanUp ();
1131 //              if(game.registernow){
1132                 if(regnow)
1133                 {
1134             #if (defined(__APPLE__) && defined(__MACH__))
1135             launch_web_browser("http://www.wolfire.com/purchase/lugaru/mac");
1136             #elif PLATFORM_LINUX
1137             launch_web_browser("http://www.wolfire.com/purchase/lugaru/linux");
1138             #else
1139             launch_web_browser("http://www.wolfire.com/purchase/lugaru/pc");
1140             #endif
1141                 }
1142
1143         #if PLATFORM_LINUX  // (this may not be necessary any more.)
1144         _exit(0);  // !!! FIXME: hack...crashes on exit!
1145         #endif
1146                 return 0;
1147         }
1148         catch (const std::exception& error)
1149         {
1150                 CleanUp();
1151
1152                 std::string e = "Caught exception: ";
1153                 e += error.what();
1154
1155                 LOG(e);
1156
1157                 MessageBox(g_windowHandle, error.what(), "ERROR", MB_OK | MB_ICONEXCLAMATION);
1158         }
1159
1160         CleanUp();
1161
1162         return -1;
1163 }
1164
1165
1166
1167         // --------------------------------------------------------------------------
1168
1169
1170
1171         bool selectDetail(int & width, int & height, int & bpp, int & detail)
1172         {
1173                 bool res = true;
1174
1175                 // currently with SDL, we just use whatever is requested
1176                 //  and don't care.  --ryan.
1177
1178
1179                 return res;
1180         }
1181
1182         extern int channels[100];
1183         extern OPENAL_SAMPLE * samp[100];
1184         extern OPENAL_STREAM * strm[20];
1185
1186         extern "C" void PlaySoundEx(int chan, OPENAL_SAMPLE *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused)
1187         {
1188                 const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]);
1189                 if (currSample && currSample == samp[chan])
1190                 {
1191                         if (OPENAL_GetPaused(channels[chan]))
1192                         {
1193                                 OPENAL_StopSound(channels[chan]);
1194                                 channels[chan] = OPENAL_FREE;
1195                         }
1196                         else if (OPENAL_IsPlaying(channels[chan]))
1197                         {
1198                                 int loop_mode = OPENAL_GetLoopMode(channels[chan]);
1199                                 if (loop_mode & OPENAL_LOOP_OFF)
1200                                 {
1201                                         channels[chan] = OPENAL_FREE;
1202                                 }
1203                         }
1204                 }
1205                 else
1206                 {
1207                         channels[chan] = OPENAL_FREE;
1208                 }
1209
1210                 channels[chan] = OPENAL_PlaySoundEx(channels[chan], sptr, dsp, startpaused);
1211                 if (channels[chan] < 0)
1212                 {
1213                         channels[chan] = OPENAL_PlaySoundEx(OPENAL_FREE, sptr, dsp, startpaused);
1214                 }
1215         }
1216
1217         extern "C" void PlayStreamEx(int chan, OPENAL_STREAM *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused)
1218         {
1219                 const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]);
1220                 if (currSample && currSample == OPENAL_Stream_GetSample(sptr))
1221                 {
1222                                 OPENAL_StopSound(channels[chan]);
1223                                 OPENAL_Stream_Stop(sptr);
1224                 }
1225                 else
1226                 {
1227                         OPENAL_Stream_Stop(sptr);
1228                         channels[chan] = OPENAL_FREE;
1229                 }
1230
1231                 channels[chan] = OPENAL_Stream_PlayEx(channels[chan], sptr, dsp, startpaused);
1232                 if (channels[chan] < 0)
1233                 {
1234                         channels[chan] = OPENAL_Stream_PlayEx(OPENAL_FREE, sptr, dsp, startpaused);
1235                 }
1236         }
1237
1238
1239         bool LoadImage(const char * fname, TGAImageRec & tex)
1240         {
1241                 if ( tex.data == NULL )
1242                         return false;
1243                 else
1244                         return load_image(fname, tex);
1245         }
1246
1247         void ScreenShot(const char * fname)
1248         {
1249         save_image(fname);
1250         }
1251
1252
1253
1254 static bool load_image(const char *file_name, TGAImageRec &tex)
1255 {
1256     const char *ptr = strrchr((char *)file_name, '.');
1257     if (ptr)
1258     {
1259         if (strcasecmp(ptr+1, "png") == 0)
1260             return load_png(file_name, tex);
1261         else if (strcasecmp(ptr+1, "jpg") == 0)
1262             return load_jpg(file_name, tex);
1263     }
1264
1265     STUBBED("Unsupported image type");
1266     return false;
1267 }
1268
1269
1270 struct my_error_mgr {
1271   struct jpeg_error_mgr pub;    /* "public" fields */
1272   jmp_buf setjmp_buffer;        /* for return to caller */
1273 };
1274 typedef struct my_error_mgr * my_error_ptr;
1275
1276
1277 static void my_error_exit(j_common_ptr cinfo)
1278 {
1279         struct my_error_mgr *err = (struct my_error_mgr *)cinfo->err;
1280         longjmp(err->setjmp_buffer, 1);
1281 }
1282
1283 /* stolen from public domain example.c code in libjpg distribution. */
1284 static bool load_jpg(const char *file_name, TGAImageRec &tex)
1285 {
1286     struct jpeg_decompress_struct cinfo;
1287     struct my_error_mgr jerr;
1288     JSAMPROW buffer[1];         /* Output row buffer */
1289     int row_stride;             /* physical row width in output buffer */
1290     FILE *infile = fopen(file_name, "rb");
1291
1292     if (infile == NULL)
1293         return false;
1294
1295     cinfo.err = jpeg_std_error(&jerr.pub);
1296     jerr.pub.error_exit = my_error_exit;
1297     if (setjmp(jerr.setjmp_buffer)) {
1298         jpeg_destroy_decompress(&cinfo);
1299         fclose(infile);
1300         return false;
1301     }
1302
1303     jpeg_create_decompress(&cinfo);
1304     jpeg_stdio_src(&cinfo, infile);
1305     (void) jpeg_read_header(&cinfo, TRUE);
1306
1307     cinfo.out_color_space = JCS_RGB;
1308     cinfo.quantize_colors = 0;
1309     (void) jpeg_calc_output_dimensions(&cinfo);
1310     (void) jpeg_start_decompress(&cinfo);
1311
1312     row_stride = cinfo.output_width * cinfo.output_components;
1313     tex.sizeX = cinfo.output_width;
1314     tex.sizeY = cinfo.output_height;
1315     tex.bpp = 24;
1316
1317     while (cinfo.output_scanline < cinfo.output_height) {
1318         buffer[0] = (JSAMPROW)(char *)tex.data +
1319                         ((cinfo.output_height-1) - cinfo.output_scanline) * row_stride;
1320         (void) jpeg_read_scanlines(&cinfo, buffer, 1);
1321     }
1322
1323     (void) jpeg_finish_decompress(&cinfo);
1324     jpeg_destroy_decompress(&cinfo);
1325     fclose(infile);
1326
1327     return true;
1328 }
1329
1330
1331 /* stolen from public domain example.c code in libpng distribution. */
1332 static bool load_png(const char *file_name, TGAImageRec &tex)
1333 {
1334     bool hasalpha = false;
1335     png_structp png_ptr = NULL;
1336     png_infop info_ptr = NULL;
1337     png_uint_32 width, height;
1338     int bit_depth, color_type, interlace_type;
1339     png_byte **rows = NULL;
1340     bool retval = false;
1341     png_byte **row_pointers = NULL;
1342     FILE *fp = fopen(file_name, "rb");
1343
1344     if (fp == NULL)
1345         return(NULL);
1346
1347     png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
1348     if (png_ptr == NULL)
1349         goto png_done;
1350
1351     info_ptr = png_create_info_struct(png_ptr);
1352     if (info_ptr == NULL)
1353         goto png_done;
1354
1355     if (setjmp(png_jmpbuf(png_ptr)))
1356         goto png_done;
1357
1358     png_init_io(png_ptr, fp);
1359     png_read_png(png_ptr, info_ptr,
1360                  PNG_TRANSFORM_STRIP_16 | PNG_TRANSFORM_PACKING,
1361                  NULL);
1362     png_get_IHDR(png_ptr, info_ptr, &width, &height,
1363                  &bit_depth, &color_type, &interlace_type, NULL, NULL);
1364
1365     if (bit_depth != 8)  // transform SHOULD handle this...
1366         goto png_done;
1367
1368     if (color_type & PNG_COLOR_MASK_PALETTE)  // !!! FIXME?
1369         goto png_done;
1370
1371     if ((color_type & PNG_COLOR_MASK_COLOR) == 0)  // !!! FIXME?
1372         goto png_done;
1373
1374     hasalpha = ((color_type & PNG_COLOR_MASK_ALPHA) != 0);
1375     row_pointers = png_get_rows(png_ptr, info_ptr);
1376     if (!row_pointers)
1377         goto png_done;
1378
1379     if (!hasalpha)
1380     {
1381         png_byte *dst = tex.data;
1382         for (int i = height-1; i >= 0; i--)
1383         {
1384             png_byte *src = row_pointers[i];
1385             for (int j = 0; j < width; j++)
1386             {
1387                 dst[0] = src[0];
1388                 dst[1] = src[1];
1389                 dst[2] = src[2];
1390                 dst[3] = 0xFF;
1391                 src += 3;
1392                 dst += 4;
1393             }
1394         }
1395     }
1396
1397     else
1398     {
1399         png_byte *dst = tex.data;
1400         int pitch = width * 4;
1401         for (int i = height-1; i >= 0; i--, dst += pitch)
1402             memcpy(dst, row_pointers[i], pitch);
1403     }
1404
1405     tex.sizeX = width;
1406     tex.sizeY = height;
1407     tex.bpp = 32;
1408     retval = true;
1409
1410 png_done:
1411     png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
1412     if (fp)
1413         fclose(fp);
1414     return (retval);
1415 }
1416
1417
1418 static bool save_image(const char *file_name)
1419 {
1420     const char *ptr = strrchr((char *)file_name, '.');
1421     if (ptr)
1422     {
1423         if (strcasecmp(ptr+1, "png") == 0)
1424             return save_png(file_name);
1425     }
1426
1427     STUBBED("Unsupported image type");
1428     return false;
1429 }
1430
1431
1432 static bool save_png(const char *file_name)
1433 {
1434     FILE *fp = NULL;
1435     png_structp png_ptr = NULL;
1436     png_infop info_ptr = NULL;
1437     bool retval = false;
1438
1439     fp = fopen(file_name, "wb");
1440     if (fp == NULL)
1441         return false;
1442
1443     png_bytep *row_pointers = new png_bytep[kContextHeight];
1444     png_bytep screenshot = new png_byte[kContextWidth * kContextHeight * 3];
1445     if ((!screenshot) || (!row_pointers))
1446         goto save_png_done;
1447
1448     glGetError();
1449     glReadPixels(0, 0, kContextWidth, kContextHeight,
1450                  GL_RGB, GL_UNSIGNED_BYTE, screenshot);
1451     if (glGetError() != GL_NO_ERROR)
1452         goto save_png_done;
1453
1454     for (int i = 0; i < kContextHeight; i++)
1455         row_pointers[i] = screenshot + ((kContextWidth * ((kContextHeight-1) - i)) * 3);
1456
1457     png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
1458     if (png_ptr == NULL)
1459         goto save_png_done;
1460
1461     info_ptr = png_create_info_struct(png_ptr);
1462     if (info_ptr == NULL)
1463         goto save_png_done;
1464
1465     if (setjmp(png_jmpbuf(png_ptr)))
1466         goto save_png_done;
1467
1468     png_init_io(png_ptr, fp);
1469
1470     if (setjmp(png_jmpbuf(png_ptr)))
1471         goto save_png_done;
1472
1473     png_set_IHDR(png_ptr, info_ptr, kContextWidth, kContextHeight,
1474                  8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
1475                  PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
1476
1477     png_write_info(png_ptr, info_ptr);
1478
1479     if (setjmp(png_jmpbuf(png_ptr)))
1480         goto save_png_done;
1481
1482         png_write_image(png_ptr, row_pointers);
1483
1484         if (setjmp(png_jmpbuf(png_ptr)))
1485         goto save_png_done;
1486
1487     png_write_end(png_ptr, NULL);
1488     retval = true;
1489
1490 save_png_done:
1491     png_destroy_write_struct(&png_ptr, &info_ptr);
1492     delete[] screenshot;
1493     delete[] row_pointers;
1494     if (fp)
1495         fclose(fp);
1496     if (!retval)
1497         unlink(ConvertFileName(file_name));
1498     return retval;
1499 }
1500
1501
1502