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         if ( stereomode == stereoNone ) {
 301                 game.DrawGLScene(stereoCenter);
 302         } else {
 303                 game.DrawGLScene(stereoLeft);
 304                 game.DrawGLScene(stereoRight);
 305         }
 306 }
 307
 308
 309 static KeyMap g_theKeys;
 310
 311 void SetKey( int key)
 312 {
 313     g_theKeys[ key >> 3] |= (1 << (key & 7));
 314 }
 315
 316 void ClearKey( int key)
 317 {
 318     g_theKeys[ key >> 3] &= (0xff ^ (1 << (key & 7)));
 319 }
 320
 321 void GetKeys(  unsigned char theKeys[16])
 322 {
 323     memcpy( theKeys, &g_theKeys, 16);
 324 }
 325
 326 Boolean Button()
 327 {
 328     return g_button;
 329 }
 330
 331
 332 #define MAX_SDLKEYS SDLK_LAST
 333 static unsigned short KeyTable[MAX_SDLKEYS];
 334
 335 static void initSDLKeyTable(void)
 336 {
 337     memset(KeyTable, 0xFF, sizeof (KeyTable));
 338     KeyTable[SDLK_BACKSPACE] = MAC_DELETE_KEY;
 339     KeyTable[SDLK_TAB] = MAC_TAB_KEY;
 340     KeyTable[SDLK_RETURN] = MAC_RETURN_KEY;
 341     KeyTable[SDLK_ESCAPE] = MAC_ESCAPE_KEY;
 342     KeyTable[SDLK_SPACE] = MAC_SPACE_KEY;
 343     KeyTable[SDLK_PAGEUP] = MAC_PAGE_UP_KEY;
 344     KeyTable[SDLK_PAGEDOWN] = MAC_PAGE_DOWN_KEY;
 345     KeyTable[SDLK_END] = MAC_END_KEY;
 346     KeyTable[SDLK_HOME] = MAC_HOME_KEY;
 347     KeyTable[SDLK_LEFT] = MAC_ARROW_LEFT_KEY;
 348     KeyTable[SDLK_UP] = MAC_ARROW_UP_KEY;
 349     KeyTable[SDLK_RIGHT] = MAC_ARROW_RIGHT_KEY;
 350     KeyTable[SDLK_DOWN] = MAC_ARROW_DOWN_KEY;
 351     KeyTable[SDLK_INSERT] = MAC_INSERT_KEY;
 352     KeyTable[SDLK_DELETE] = MAC_DEL_KEY;
 353     KeyTable[SDLK_0] = MAC_0_KEY;
 354     KeyTable[SDLK_1] = MAC_1_KEY;
 355     KeyTable[SDLK_2] = MAC_2_KEY;
 356     KeyTable[SDLK_3] = MAC_3_KEY;
 357     KeyTable[SDLK_4] = MAC_4_KEY;
 358     KeyTable[SDLK_5] = MAC_5_KEY;
 359     KeyTable[SDLK_6] = MAC_6_KEY;
 360     KeyTable[SDLK_7] = MAC_7_KEY;
 361     KeyTable[SDLK_8] = MAC_8_KEY;
 362     KeyTable[SDLK_9] = MAC_9_KEY;
 363     KeyTable[SDLK_a] = MAC_A_KEY;
 364     KeyTable[SDLK_b] = MAC_B_KEY;
 365     KeyTable[SDLK_c] = MAC_C_KEY;
 366     KeyTable[SDLK_d] = MAC_D_KEY;
 367     KeyTable[SDLK_e] = MAC_E_KEY;
 368     KeyTable[SDLK_f] = MAC_F_KEY;
 369     KeyTable[SDLK_g] = MAC_G_KEY;
 370     KeyTable[SDLK_h] = MAC_H_KEY;
 371     KeyTable[SDLK_i] = MAC_I_KEY;
 372     KeyTable[SDLK_j] = MAC_J_KEY;
 373     KeyTable[SDLK_k] = MAC_K_KEY;
 374     KeyTable[SDLK_l] = MAC_L_KEY;
 375     KeyTable[SDLK_m] = MAC_M_KEY;
 376     KeyTable[SDLK_n] = MAC_N_KEY;
 377     KeyTable[SDLK_o] = MAC_O_KEY;
 378     KeyTable[SDLK_p] = MAC_P_KEY;
 379     KeyTable[SDLK_q] = MAC_Q_KEY;
 380     KeyTable[SDLK_r] = MAC_R_KEY;
 381     KeyTable[SDLK_s] = MAC_S_KEY;
 382     KeyTable[SDLK_t] = MAC_T_KEY;
 383     KeyTable[SDLK_u] = MAC_U_KEY;
 384     KeyTable[SDLK_v] = MAC_V_KEY;
 385     KeyTable[SDLK_w] = MAC_W_KEY;
 386     KeyTable[SDLK_x] = MAC_X_KEY;
 387     KeyTable[SDLK_y] = MAC_Y_KEY;
 388     KeyTable[SDLK_z] = MAC_Z_KEY;
 389     KeyTable[SDLK_KP0] = MAC_NUMPAD_0_KEY;
 390     KeyTable[SDLK_KP1] = MAC_NUMPAD_1_KEY;
 391     KeyTable[SDLK_KP2] = MAC_NUMPAD_2_KEY;
 392     KeyTable[SDLK_KP3] = MAC_NUMPAD_3_KEY;
 393     KeyTable[SDLK_KP4] = MAC_NUMPAD_4_KEY;
 394     KeyTable[SDLK_KP5] = MAC_NUMPAD_5_KEY;
 395     KeyTable[SDLK_KP6] = MAC_NUMPAD_6_KEY;
 396     KeyTable[SDLK_KP7] = MAC_NUMPAD_7_KEY;
 397     KeyTable[SDLK_KP8] = MAC_NUMPAD_8_KEY;
 398     KeyTable[SDLK_KP9] = MAC_NUMPAD_9_KEY;
 399     KeyTable[SDLK_KP_MULTIPLY] = MAC_NUMPAD_ASTERISK_KEY;
 400     KeyTable[SDLK_KP_PLUS] = MAC_NUMPAD_PLUS_KEY;
 401     KeyTable[SDLK_KP_ENTER] = MAC_NUMPAD_ENTER_KEY;
 402     KeyTable[SDLK_KP_MINUS] = MAC_NUMPAD_MINUS_KEY;
 403     KeyTable[SDLK_KP_PERIOD] = MAC_NUMPAD_PERIOD_KEY;
 404     KeyTable[SDLK_KP_DIVIDE] = MAC_NUMPAD_SLASH_KEY;
 405     KeyTable[SDLK_F1] = MAC_F1_KEY;
 406     KeyTable[SDLK_F2] = MAC_F2_KEY;
 407     KeyTable[SDLK_F3] = MAC_F3_KEY;
 408     KeyTable[SDLK_F4] = MAC_F4_KEY;
 409     KeyTable[SDLK_F5] = MAC_F5_KEY;
 410     KeyTable[SDLK_F6] = MAC_F6_KEY;
 411     KeyTable[SDLK_F7] = MAC_F7_KEY;
 412     KeyTable[SDLK_F8] = MAC_F8_KEY;
 413     KeyTable[SDLK_F9] = MAC_F9_KEY;
 414     KeyTable[SDLK_F10] = MAC_F10_KEY;
 415     KeyTable[SDLK_F11] = MAC_F11_KEY;
 416     KeyTable[SDLK_F12] = MAC_F12_KEY;
 417     KeyTable[SDLK_SEMICOLON] = MAC_SEMICOLON_KEY;
 418     KeyTable[SDLK_PLUS] = MAC_PLUS_KEY;
 419     KeyTable[SDLK_COMMA] = MAC_COMMA_KEY;
 420     KeyTable[SDLK_MINUS] = MAC_MINUS_KEY;
 421     KeyTable[SDLK_PERIOD] = MAC_PERIOD_KEY;
 422     KeyTable[SDLK_SLASH] = MAC_SLASH_KEY;
 423     KeyTable[SDLK_BACKQUOTE] = MAC_TILDE_KEY;
 424     KeyTable[SDLK_LEFTBRACKET] = MAC_LEFTBRACKET_KEY;
 425     KeyTable[SDLK_BACKSLASH] = MAC_BACKSLASH_KEY;
 426     KeyTable[SDLK_RIGHTBRACKET] = MAC_RIGHTBRACKET_KEY;
 427     KeyTable[SDLK_QUOTE] = MAC_APOSTROPHE_KEY;
 428 }
 429
 430 static inline int clamp_sdl_mouse_button(Uint8 button)
 431 {
 432     if (button == 2)   // right mouse button is button 3 in SDL.
 433         button = 3;
 434     else if (button == 3)
 435         button = 2;
 436
 437     if ((button >= 1) && (button <= 3))
 438         return button - 1;
 439     return -1;
 440 }
 441
 442 static void sdlEventProc(const SDL_Event &e, Game &game)
 443 {
 444     int val;
 445     bool skipkey = false;
 446     SDLMod mod;
 447
 448     switch(e.type)
 449         {
 450         case SDL_MOUSEMOTION:
 451             game.deltah += e.motion.xrel;
 452             game.deltav += e.motion.yrel;
 453             return;
 454
 455                 case SDL_MOUSEBUTTONDOWN:
 456                         {
 457                 val = clamp_sdl_mouse_button(e.button.button);
 458                 if ((val >= 0) && (val <= 2))
 459                 {
 460                     if (val == 0)
 461                                     g_button = true;
 462                                 buttons[val] = true;
 463                 }
 464                         }
 465                         return;
 466
 467                 case SDL_MOUSEBUTTONUP:
 468                         {
 469                 val = clamp_sdl_mouse_button(e.button.button);
 470                 if ((val >= 0) && (val <= 2))
 471                 {
 472                     if (val == 0)
 473                                     g_button = false;
 474                                 buttons[val] = false;
 475                 }
 476                         }
 477             return;
 478
 479         case SDL_KEYDOWN:
 480             if (e.key.keysym.sym == SDLK_g)
 481             {
 482                 if (e.key.keysym.mod & KMOD_CTRL)
 483                 {
 484                     skipkey = true;
 485                     SDL_GrabMode mode = SDL_GRAB_ON;
 486                     if ((SDL_GetVideoSurface()->flags & SDL_FULLSCREEN) == 0)
 487                     {
 488                         mode = SDL_WM_GrabInput(SDL_GRAB_QUERY);
 489                         mode = (mode==SDL_GRAB_ON) ? SDL_GRAB_OFF:SDL_GRAB_ON;
 490                     }
 491                     SDL_WM_GrabInput(mode);
 492                 }
 493             }
 494
 495             else if (e.key.keysym.sym == SDLK_RETURN)
 496             {
 497                 if (e.key.keysym.mod & KMOD_ALT)
 498                 {
 499                     skipkey = true;
 500                     SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
 501                 }
 502             }
 503
 504             if ((!skipkey) && (e.key.keysym.sym < SDLK_LAST))
 505             {
 506                 if (KeyTable[e.key.keysym.sym] != 0xffff)
 507                     SetKey(KeyTable[e.key.keysym.sym]);
 508             }
 509
 510             mod = SDL_GetModState();
 511             if (mod & KMOD_CTRL)
 512                 SetKey(MAC_CONTROL_KEY);
 513             if (mod & KMOD_ALT)
 514                 SetKey(MAC_OPTION_KEY);
 515             if (mod & KMOD_META)
 516                 SetKey(MAC_COMMAND_KEY);
 517             if (mod & KMOD_SHIFT)
 518                 SetKey(MAC_SHIFT_KEY);
 519             if (mod & KMOD_CAPS)
 520                 SetKey(MAC_CAPS_LOCK_KEY);
 521
 522             return;
 523
 524         case SDL_KEYUP:
 525             if (e.key.keysym.sym < SDLK_LAST)
 526             {
 527                 if (KeyTable[e.key.keysym.sym] != 0xffff)
 528                     ClearKey(KeyTable[e.key.keysym.sym]);
 529             }
 530
 531             mod = SDL_GetModState();
 532             if ((mod & KMOD_CTRL) == 0)
 533                 ClearKey(MAC_CONTROL_KEY);
 534             if ((mod & KMOD_ALT) == 0)
 535                 ClearKey(MAC_OPTION_KEY);
 536             if ((mod & KMOD_META) == 0)
 537                 ClearKey(MAC_COMMAND_KEY);
 538             if ((mod & KMOD_SHIFT) == 0)
 539                 ClearKey(MAC_SHIFT_KEY);
 540             if ((mod & KMOD_CAPS) == 0)
 541                 ClearKey(MAC_CAPS_LOCK_KEY);
 542             return;
 543     }
 544 }
 545
 546
 547 // --------------------------------------------------------------------------
 548
 549 static Point gMidPoint;
 550
 551 Boolean SetUp (Game & game)
 552 {
 553         char string[10];
 554
 555         LOGFUNC;
 556
 557         randSeed = UpTime().lo;
 558
 559         osx = 0;
 560         cellophane=0;
 561         texdetail=4;
 562         terraindetail=2;
 563         slomospeed=0.25;
 564         slomofreq=8012;
 565         numplayers=1;
 566
 567         DefaultSettings(game);
 568
 569         selectDetail(kContextWidth, kContextHeight, kBitsPerPixel, detail);
 570
 571         if(!LoadSettings(game)) {
 572                 fprintf(stderr, "Failed to load config, creating default\n");
 573                 SaveSettings(game);
 574         }
 575
 576         if(kBitsPerPixel!=32&&kBitsPerPixel!=16){
 577                 kBitsPerPixel=16;
 578         }
 579
 580
 581         selectDetail(kContextWidth, kContextHeight, kBitsPerPixel, detail);
 582
 583         SetupDSpFullScreen();
 584
 585
 586     if (!SDL_WasInit(SDL_INIT_VIDEO))
 587     {
 588         if (SDL_Init(SDL_INIT_VIDEO) == -1)
 589         {
 590             fprintf(stderr, "SDL_Init() failed: %s\n", SDL_GetError());
 591             return false;
 592         }
 593
 594         if (SDL_GL_LoadLibrary(NULL) == -1)
 595         {
 596             fprintf(stderr, "SDL_GL_LoadLibrary() failed: %s\n", SDL_GetError());
 597             SDL_Quit();
 598             return false;
 599         }
 600
 601         SDL_Rect **res = SDL_ListModes(NULL, SDL_FULLSCREEN|SDL_OPENGL);
 602         if ( (res == NULL) || (res == ((SDL_Rect **)-1)) || (res[0] == NULL) || (res[0]->w < 640) || (res[0]->h < 480) )
 603             res = hardcoded_resolutions;
 604
 605         // reverse list (it was sorted biggest to smallest by SDL)...
 606         int count;
 607         for (count = 0; res[count]; count++)
 608         {
 609             if ((res[count]->w < 640) || (res[count]->h < 480))
 610                 break;   // sane lower limit.
 611         }
 612
 613         static SDL_Rect *resolutions_block = NULL;
 614         resolutions_block = (SDL_Rect*) realloc(resolutions_block, sizeof (SDL_Rect) * count);
 615         resolutions = (SDL_Rect**) realloc(resolutions, sizeof (SDL_Rect *) * (count + 1));
 616         if ((resolutions_block == NULL) || (resolutions == NULL))
 617         {
 618             SDL_Quit();
 619             fprintf(stderr, "Out of memory!\n");
 620             return false;
 621         }
 622
 623         resolutions[count--] = NULL;
 624         for (int i = 0; count >= 0; i++, count--)
 625         {
 626             memcpy(&resolutions_block[count], res[i], sizeof (SDL_Rect));
 627             resolutions[count] = &resolutions_block[count];
 628         }
 629
 630         if (cmdline("showresolutions"))
 631         {
 632             printf("Resolutions we think are okay:\n");
 633             for (int i = 0; resolutions[i]; i++)
 634                 printf("  %d x %d\n", (int) resolutions[i]->w, (int) resolutions[i]->h);
 635         }
 636     }
 637
 638     Uint32 sdlflags = SDL_OPENGL;
 639     if (!cmdline("windowed"))
 640         sdlflags |= SDL_FULLSCREEN;
 641
 642     SDL_WM_SetCaption("Lugaru", "Lugaru");
 643
 644     SDL_ShowCursor(0);
 645
 646     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 647     SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 1);
 648
 649     if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
 650     {
 651         fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
 652         fprintf(stderr, "forcing 640x480...\n");
 653         kContextWidth = 640;
 654         kContextHeight = 480;
 655         if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
 656         {
 657             fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
 658             fprintf(stderr, "forcing 640x480 windowed mode...\n");
 659             sdlflags &= ~SDL_FULLSCREEN;
 660             if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
 661             {
 662                 fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
 663                 return false;
 664             }
 665         }
 666     }
 667
 668     int dblbuf = 0;
 669     if ((SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &dblbuf) == -1) || (!dblbuf))
 670     {
 671         fprintf(stderr, "Failed to get double buffered GL context!\n");
 672         SDL_Quit();
 673         return false;
 674     }
 675
 676     if (!lookup_all_glsyms())
 677     {
 678         SDL_Quit();
 679         return false;
 680     }
 681
 682     if (!cmdline("nomousegrab"))
 683         SDL_WM_GrabInput(SDL_GRAB_ON);
 684
 685
 686         glClear( GL_COLOR_BUFFER_BIT );
 687         swap_gl_buffers();
 688
 689         // clear all states
 690         glDisable( GL_ALPHA_TEST);
 691         glDisable( GL_BLEND);
 692         glDisable( GL_DEPTH_TEST);
 693         //      glDisable( GL_DITHER);
 694         glDisable( GL_FOG);
 695         glDisable( GL_LIGHTING);
 696         glDisable( GL_LOGIC_OP);
 697         glDisable( GL_TEXTURE_1D);
 698         glDisable( GL_TEXTURE_2D);
 699         glPixelTransferi( GL_MAP_COLOR, GL_FALSE);
 700         glPixelTransferi( GL_RED_SCALE, 1);
 701         glPixelTransferi( GL_RED_BIAS, 0);
 702         glPixelTransferi( GL_GREEN_SCALE, 1);
 703         glPixelTransferi( GL_GREEN_BIAS, 0);
 704         glPixelTransferi( GL_BLUE_SCALE, 1);
 705         glPixelTransferi( GL_BLUE_BIAS, 0);
 706         glPixelTransferi( GL_ALPHA_SCALE, 1);
 707         glPixelTransferi( GL_ALPHA_BIAS, 0);
 708
 709         // set initial rendering states
 710         glShadeModel( GL_SMOOTH);
 711         glClearDepth( 1.0f);
 712         glDepthFunc( GL_LEQUAL);
 713         glDepthMask( GL_TRUE);
 714         //      glDepthRange( FRONT_CLIP, BACK_CLIP);
 715         glEnable( GL_DEPTH_TEST);
 716         glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
 717         glCullFace( GL_FRONT);
 718         glEnable( GL_CULL_FACE);
 719         glEnable( GL_LIGHTING);
 720 //      glEnable( GL_LIGHT_MODEL_AMBIENT);
 721         glEnable( GL_DITHER);
 722         glEnable( GL_COLOR_MATERIAL);
 723         glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 724         glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 725         glAlphaFunc( GL_GREATER, 0.5f);
 726
 727         GLint width = kContextWidth;
 728         GLint height = kContextHeight;
 729         gMidPoint.h = width / 2;
 730         gMidPoint.v = height / 2;
 731         screenwidth=width;
 732         screenheight=height;
 733
 734         game.newdetail=detail;
 735         game.newscreenwidth=screenwidth;
 736         game.newscreenheight=screenheight;
 737
 738         if ( CanInitStereo(stereomode) ) {
 739                 InitStereo(stereomode);
 740         } else {
 741                 fprintf(stderr, "Failed to initialize stereo, disabling.\n");
 742                 stereomode = stereoNone;
 743         }
 744
 745         game.InitGame();
 746
 747         return true;
 748 }
 749
 750
 751 static void DoMouse(Game & game)
 752 {
 753
 754         if(mainmenu||(abs(game.deltah)<10*realmultiplier*1000&&abs(game.deltav)<10*realmultiplier*1000))
 755         {
 756                 game.deltah *= usermousesensitivity;
 757                 game.deltav *= usermousesensitivity;
 758                 game.mousecoordh += game.deltah;
 759                 game.mousecoordv += game.deltav;
 760         if (game.mousecoordh < 0)
 761             game.mousecoordh = 0;
 762         else if (game.mousecoordh >= kContextWidth)
 763             game.mousecoordh = kContextWidth - 1;
 764         if (game.mousecoordv < 0)
 765             game.mousecoordv = 0;
 766         else if (game.mousecoordv >= kContextHeight)
 767             game.mousecoordv = kContextHeight - 1;
 768         }
 769
 770 }
 771
 772
 773
 774 // --------------------------------------------------------------------------
 775
 776 void DoKey (SInt8 theKey, SInt8 theCode)
 777 {
 778         // do nothing
 779 }
 780
 781 // --------------------------------------------------------------------------
 782
 783
 784
 785 void DoFrameRate (int update)
 786 {
 787         static long frames = 0;
 788
 789         static AbsoluteTime time = {0,0};
 790         static AbsoluteTime frametime = {0,0};
 791         AbsoluteTime currTime = UpTime ();
 792         double deltaTime = (float) AbsoluteDeltaToDuration (currTime, frametime);
 793
 794         if (0 > deltaTime)      // if negative microseconds
 795                 deltaTime /= -1000000.0;
 796         else                            // else milliseconds
 797                 deltaTime /= 1000.0;
 798
 799         multiplier=deltaTime;
 800         if(multiplier<.001)multiplier=.001;
 801         if(multiplier>10)multiplier=10;
 802         if(update)frametime = currTime; // reset for next time interval
 803
 804         deltaTime = (float) AbsoluteDeltaToDuration (currTime, time);
 805
 806         if (0 > deltaTime)      // if negative microseconds
 807                 deltaTime /= -1000000.0;
 808         else                            // else milliseconds
 809                 deltaTime /= 1000.0;
 810         frames++;
 811         if (0.001 <= deltaTime) // has update interval passed
 812         {
 813                 if(update){
 814                         time = currTime;        // reset for next time interval
 815                         frames = 0;
 816                 }
 817         }
 818 }
 819
 820
 821 void DoUpdate (Game & game)
 822 {
 823         static float sps=200;
 824         static int count;
 825         static float oldmult;
 826
 827         DoFrameRate(1);
 828         if(multiplier>.6)multiplier=.6;
 829
 830         game.fps=1/multiplier;
 831
 832         count = multiplier*sps;
 833         if(count<2)count=2;
 834         //if(count>10)count=10;
 835
 836         realmultiplier=multiplier;
 837         multiplier*=gamespeed;
 838         if(difficulty==1)multiplier*=.9;
 839         if(difficulty==0)multiplier*=.8;
 840
 841         if(game.loading==4)multiplier*=.00001;
 842         //multiplier*.9;
 843         if(slomo&&!mainmenu)multiplier*=slomospeed;
 844         //if(freeze)multiplier*=0.00001;
 845         oldmult=multiplier;
 846         multiplier/=(float)count;
 847
 848         DoMouse(game);
 849
 850         game.TickOnce();
 851
 852         for(int i=0;i<count;i++)
 853         {
 854                 game.Tick();
 855         }
 856         multiplier=oldmult;
 857
 858         game.TickOnceAfter();
 859 /* - Debug code to test how many channels were active on average per frame
 860         static long frames = 0;
 861
 862         static AbsoluteTime start = {0,0};
 863         AbsoluteTime currTime = UpTime ();
 864         static int num_channels = 0;
 865
 866         num_channels += OPENAL_GetChannelsPlaying();
 867         double deltaTime = (float) AbsoluteDeltaToDuration (currTime, start);
 868
 869         if (0 > deltaTime)      // if negative microseconds
 870                 deltaTime /= -1000000.0;
 871         else                            // else milliseconds
 872                 deltaTime /= 1000.0;
 873
 874         ++frames;
 875
 876         if (deltaTime >= 1)
 877         {
 878                 start = currTime;
 879                 float avg_channels = (float)num_channels / (float)frames;
 880
 881                 ofstream opstream("log.txt",ios::app);
 882                 opstream << "Average frame count: ";
 883                 opstream << frames;
 884                 opstream << " frames - ";
 885                 opstream << avg_channels;
 886                 opstream << " per frame.\n";
 887                 opstream.close();
 888
 889                 frames = 0;
 890                 num_channels = 0;
 891         }
 892 */
 893         DrawGL (game);
 894 }
 895
 896 // --------------------------------------------------------------------------
 897
 898
 899 void CleanUp (void)
 900 {
 901         LOGFUNC;
 902
 903 //      game.Dispose();
 904
 905
 906
 907
 908     SDL_Quit();
 909     #define GL_FUNC(ret,fn,params,call,rt) p##fn = NULL;
 910     #include "glstubs.h"
 911     #undef GL_FUNC
 912     // cheat here...static destructors are calling glDeleteTexture() after
 913     //  the context is destroyed and libGL unloaded by SDL_Quit().
 914     pglDeleteTextures = glDeleteTextures_doNothing;
 915
 916 }
 917
 918 // --------------------------------------------------------------------------
 919
 920 static bool IsFocused()
 921 {
 922     return ((SDL_GetAppState() & SDL_APPINPUTFOCUS) != 0);
 923 }
 924
 925
 926 static void launch_web_browser(const char *url)
 927 {
 928 #ifdef WIN32
 929     ShellExecute(NULL, "open", url, NULL, NULL, SW_SHOWNORMAL);
 930
 931 #elif (defined(__APPLE__) && defined(__MACH__))
 932     const char *fmt = "open '%s'";
 933     const size_t len = strlen(fmt) + strlen(url) + 16;
 934     char *buf = new char[len];
 935     snprintf(buf, len, fmt, url);
 936     system(buf);
 937     delete[] buf;
 938
 939 #elif PLATFORM_LINUX
 940     const char *fmt = "PATH=$PATH:. xdg-open '%s'";
 941     const size_t len = strlen(fmt) + strlen(url) + 16;
 942     char *buf = new char[len];
 943     snprintf(buf, len, fmt, url);
 944     system(buf);
 945     delete[] buf;
 946 #endif
 947 }
 948
 949
 950 #ifndef WIN32
 951 // (code lifted from physfs: http://icculus.org/physfs/ ... zlib license.)
 952 static char *findBinaryInPath(const char *bin, char *envr)
 953 {
 954     size_t alloc_size = 0;
 955     char *exe = NULL;
 956     char *start = envr;
 957     char *ptr;
 958
 959     do
 960     {
 961         size_t size;
 962         ptr = strchr(start, ':');  /* find next $PATH separator. */
 963         if (ptr)
 964             *ptr = '\0';
 965
 966         size = strlen(start) + strlen(bin) + 2;
 967         if (size > alloc_size)
 968         {
 969             char *x = (char *) realloc(exe, size);
 970             if (x == NULL)
 971             {
 972                 if (exe != NULL)
 973                     free(exe);
 974                 return(NULL);
 975             } /* if */
 976
 977             alloc_size = size;
 978             exe = x;
 979         } /* if */
 980
 981         /* build full binary path... */
 982         strcpy(exe, start);
 983         if ((exe[0] == '\0') || (exe[strlen(exe) - 1] != '/'))
 984             strcat(exe, "/");
 985         strcat(exe, bin);
 986
 987         if (access(exe, X_OK) == 0)  /* Exists as executable? We're done. */
 988         {
 989             strcpy(exe, start);  /* i'm lazy. piss off. */
 990             return(exe);
 991         } /* if */
 992
 993         start = ptr + 1;  /* start points to beginning of next element. */
 994     } while (ptr != NULL);
 995
 996     if (exe != NULL)
 997         free(exe);
 998
 999     return(NULL);  /* doesn't exist in path. */
1000 } /* findBinaryInPath */
1001
1002
1003 char *calcBaseDir(const char *argv0)
1004 {
1005     /* If there isn't a path on argv0, then look through the $PATH for it. */
1006     char *retval;
1007     char *envr;
1008
1009     const char *ptr = strrchr((char *)argv0, '/');
1010     if (strchr(argv0, '/'))
1011     {
1012         retval = strdup(argv0);
1013         if (retval)
1014             *((char *) strrchr(retval, '/')) = '\0';
1015         return(retval);
1016     }
1017
1018     envr = getenv("PATH");
1019     if (!envr) return NULL;
1020     envr = strdup(envr);
1021     if (!envr) return NULL;
1022     retval = findBinaryInPath(argv0, envr);
1023     free(envr);
1024     return(retval);
1025 }
1026
1027 static inline void chdirToAppPath(const char *argv0)
1028 {
1029     char *dir = calcBaseDir(argv0);
1030     if (dir)
1031     {
1032         #if (defined(__APPLE__) && defined(__MACH__))
1033         // Chop off /Contents/MacOS if it's at the end of the string, so we
1034         //  land in the base of the app bundle.
1035         const size_t len = strlen(dir);
1036         const char *bundledirs = "/Contents/MacOS";
1037         const size_t bundledirslen = strlen(bundledirs);
1038         if (len > bundledirslen)
1039         {
1040             char *ptr = (dir + len) - bundledirslen;
1041             if (strcasecmp(ptr, bundledirs) == 0)
1042                 *ptr = '\0';
1043         }
1044         #endif
1045         chdir(dir);
1046         free(dir);
1047     }
1048 }
1049 #endif
1050
1051
1052 int main(int argc, char **argv)
1053 {
1054 #ifndef __MINGW32__
1055     _argc = argc;
1056     _argv = argv;
1057 #endif
1058
1059     // !!! FIXME: we could use a Win32 API for this.  --ryan.
1060 #ifndef WIN32
1061     chdirToAppPath(argv[0]);
1062 #endif
1063
1064         LOGFUNC;
1065
1066         memset( &g_theKeys, 0, sizeof( KeyMap));
1067
1068     initSDLKeyTable();
1069
1070         try
1071         {
1072                 bool regnow = false;
1073                 {
1074                         Game game;
1075                         pgame = &game;
1076
1077                         //ofstream os("error.txt");
1078                         //os.close();
1079                         //ofstream os("log.txt");
1080                         //os.close();
1081
1082                         if (!SetUp (game))
1083                 return 42;
1084
1085                         while (!gDone&&!game.quit&&(!game.tryquit))
1086                         {
1087                                 if (IsFocused())
1088                                 {
1089                                         gameFocused = true;
1090
1091                                         // check windows messages
1092
1093                                         game.deltah = 0;
1094                                         game.deltav = 0;
1095                                         SDL_Event e;
1096                                         // message pump
1097                                         while( SDL_PollEvent( &e ) )
1098                                         {
1099                                                 if( e.type == SDL_QUIT )
1100                                                 {
1101                                                         gDone=true;
1102                                                         break;
1103                                                 }
1104                                                 sdlEventProc(e, game);
1105                                         }
1106
1107
1108                                         // game
1109                                         DoUpdate(game);
1110                                 }
1111                                 else
1112                                 {
1113                                         if (gameFocused)
1114                                         {
1115                                                 // allow game chance to pause
1116                                                 gameFocused = false;
1117                                                 DoUpdate(game);
1118                                         }
1119
1120                                         // game is not in focus, give CPU time to other apps by waiting for messages instead of 'peeking'
1121                     STUBBED("give up CPU but sniff the event queue");
1122                                 }
1123                         }
1124
1125                         regnow = game.registernow;
1126                 }
1127                 pgame = 0;
1128
1129                 CleanUp ();
1130 //              if(game.registernow){
1131                 if(regnow)
1132                 {
1133             #if (defined(__APPLE__) && defined(__MACH__))
1134             launch_web_browser("http://www.wolfire.com/purchase/lugaru/mac");
1135             #elif PLATFORM_LINUX
1136             launch_web_browser("http://www.wolfire.com/purchase/lugaru/linux");
1137             #else
1138             launch_web_browser("http://www.wolfire.com/purchase/lugaru/pc");
1139             #endif
1140                 }
1141
1142         #if PLATFORM_LINUX  // (this may not be necessary any more.)
1143         _exit(0);  // !!! FIXME: hack...crashes on exit!
1144         #endif
1145                 return 0;
1146         }
1147         catch (const std::exception& error)
1148         {
1149                 CleanUp();
1150
1151                 std::string e = "Caught exception: ";
1152                 e += error.what();
1153
1154                 LOG(e);
1155
1156                 MessageBox(g_windowHandle, error.what(), "ERROR", MB_OK | MB_ICONEXCLAMATION);
1157         }
1158
1159         CleanUp();
1160
1161         return -1;
1162 }
1163
1164
1165
1166         // --------------------------------------------------------------------------
1167
1168
1169
1170         bool selectDetail(int & width, int & height, int & bpp, int & detail)
1171         {
1172                 bool res = true;
1173
1174                 // currently with SDL, we just use whatever is requested
1175                 //  and don't care.  --ryan.
1176
1177
1178                 return res;
1179         }
1180
1181         extern int channels[100];
1182         extern OPENAL_SAMPLE * samp[100];
1183         extern OPENAL_STREAM * strm[20];
1184
1185         extern "C" void PlaySoundEx(int chan, OPENAL_SAMPLE *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused)
1186         {
1187                 const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]);
1188                 if (currSample && currSample == samp[chan])
1189                 {
1190                         if (OPENAL_GetPaused(channels[chan]))
1191                         {
1192                                 OPENAL_StopSound(channels[chan]);
1193                                 channels[chan] = OPENAL_FREE;
1194                         }
1195                         else if (OPENAL_IsPlaying(channels[chan]))
1196                         {
1197                                 int loop_mode = OPENAL_GetLoopMode(channels[chan]);
1198                                 if (loop_mode & OPENAL_LOOP_OFF)
1199                                 {
1200                                         channels[chan] = OPENAL_FREE;
1201                                 }
1202                         }
1203                 }
1204                 else
1205                 {
1206                         channels[chan] = OPENAL_FREE;
1207                 }
1208
1209                 channels[chan] = OPENAL_PlaySoundEx(channels[chan], sptr, dsp, startpaused);
1210                 if (channels[chan] < 0)
1211                 {
1212                         channels[chan] = OPENAL_PlaySoundEx(OPENAL_FREE, sptr, dsp, startpaused);
1213                 }
1214         }
1215
1216         extern "C" void PlayStreamEx(int chan, OPENAL_STREAM *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused)
1217         {
1218                 const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]);
1219                 if (currSample && currSample == OPENAL_Stream_GetSample(sptr))
1220                 {
1221                                 OPENAL_StopSound(channels[chan]);
1222                                 OPENAL_Stream_Stop(sptr);
1223                 }
1224                 else
1225                 {
1226                         OPENAL_Stream_Stop(sptr);
1227                         channels[chan] = OPENAL_FREE;
1228                 }
1229
1230                 channels[chan] = OPENAL_Stream_PlayEx(channels[chan], sptr, dsp, startpaused);
1231                 if (channels[chan] < 0)
1232                 {
1233                         channels[chan] = OPENAL_Stream_PlayEx(OPENAL_FREE, sptr, dsp, startpaused);
1234                 }
1235         }
1236
1237
1238         bool LoadImage(const char * fname, TGAImageRec & tex)
1239         {
1240                 bool res = true;
1241
1242                 if ( tex.data == NULL )
1243                 {
1244                         return false;
1245                 }
1246
1247
1248         res = load_image(fname, tex);
1249
1250
1251                 return res;
1252         }
1253
1254         void ScreenShot(const char * fname)
1255         {
1256
1257         save_image(fname);
1258
1259         }
1260
1261
1262
1263 static bool load_image(const char *file_name, TGAImageRec &tex)
1264 {
1265     const char *ptr = strrchr((char *)file_name, '.');
1266     if (ptr)
1267     {
1268         if (strcasecmp(ptr+1, "png") == 0)
1269             return load_png(file_name, tex);
1270         else if (strcasecmp(ptr+1, "jpg") == 0)
1271             return load_jpg(file_name, tex);
1272     }
1273
1274     STUBBED("Unsupported image type");
1275     return false;
1276 }
1277
1278
1279 struct my_error_mgr {
1280   struct jpeg_error_mgr pub;    /* "public" fields */
1281   jmp_buf setjmp_buffer;        /* for return to caller */
1282 };
1283 typedef struct my_error_mgr * my_error_ptr;
1284
1285
1286 static void my_error_exit(j_common_ptr cinfo)
1287 {
1288         struct my_error_mgr *err = (struct my_error_mgr *)cinfo->err;
1289         longjmp(err->setjmp_buffer, 1);
1290 }
1291
1292 /* stolen from public domain example.c code in libjpg distribution. */
1293 static bool load_jpg(const char *file_name, TGAImageRec &tex)
1294 {
1295     struct jpeg_decompress_struct cinfo;
1296     struct my_error_mgr jerr;
1297     JSAMPROW buffer[1];         /* Output row buffer */
1298     int row_stride;             /* physical row width in output buffer */
1299     FILE *infile = fopen(file_name, "rb");
1300
1301     if (infile == NULL)
1302         return false;
1303
1304     cinfo.err = jpeg_std_error(&jerr.pub);
1305     jerr.pub.error_exit = my_error_exit;
1306     if (setjmp(jerr.setjmp_buffer)) {
1307         jpeg_destroy_decompress(&cinfo);
1308         fclose(infile);
1309         return false;
1310     }
1311
1312     jpeg_create_decompress(&cinfo);
1313     jpeg_stdio_src(&cinfo, infile);
1314     (void) jpeg_read_header(&cinfo, TRUE);
1315
1316     cinfo.out_color_space = JCS_RGB;
1317     cinfo.quantize_colors = 0;
1318     (void) jpeg_calc_output_dimensions(&cinfo);
1319     (void) jpeg_start_decompress(&cinfo);
1320
1321     row_stride = cinfo.output_width * cinfo.output_components;
1322     tex.sizeX = cinfo.output_width;
1323     tex.sizeY = cinfo.output_height;
1324     tex.bpp = 24;
1325
1326     while (cinfo.output_scanline < cinfo.output_height) {
1327         buffer[0] = (JSAMPROW)(char *)tex.data +
1328                         ((cinfo.output_height-1) - cinfo.output_scanline) * row_stride;
1329         (void) jpeg_read_scanlines(&cinfo, buffer, 1);
1330     }
1331
1332     (void) jpeg_finish_decompress(&cinfo);
1333     jpeg_destroy_decompress(&cinfo);
1334     fclose(infile);
1335
1336     return true;
1337 }
1338
1339
1340 /* stolen from public domain example.c code in libpng distribution. */
1341 static bool load_png(const char *file_name, TGAImageRec &tex)
1342 {
1343     bool hasalpha = false;
1344     png_structp png_ptr = NULL;
1345     png_infop info_ptr = NULL;
1346     png_uint_32 width, height;
1347     int bit_depth, color_type, interlace_type;
1348     png_byte **rows = NULL;
1349     bool retval = false;
1350     png_byte **row_pointers = NULL;
1351     FILE *fp = fopen(file_name, "rb");
1352
1353     if (fp == NULL)
1354         return(NULL);
1355
1356     png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
1357     if (png_ptr == NULL)
1358         goto png_done;
1359
1360     info_ptr = png_create_info_struct(png_ptr);
1361     if (info_ptr == NULL)
1362         goto png_done;
1363
1364     if (setjmp(png_jmpbuf(png_ptr)))
1365         goto png_done;
1366
1367     png_init_io(png_ptr, fp);
1368     png_read_png(png_ptr, info_ptr,
1369                  PNG_TRANSFORM_STRIP_16 | PNG_TRANSFORM_PACKING,
1370                  NULL);
1371     png_get_IHDR(png_ptr, info_ptr, &width, &height,
1372                  &bit_depth, &color_type, &interlace_type, NULL, NULL);
1373
1374     if (bit_depth != 8)  // transform SHOULD handle this...
1375         goto png_done;
1376
1377     if (color_type & PNG_COLOR_MASK_PALETTE)  // !!! FIXME?
1378         goto png_done;
1379
1380     if ((color_type & PNG_COLOR_MASK_COLOR) == 0)  // !!! FIXME?
1381         goto png_done;
1382
1383     hasalpha = ((color_type & PNG_COLOR_MASK_ALPHA) != 0);
1384     row_pointers = png_get_rows(png_ptr, info_ptr);
1385     if (!row_pointers)
1386         goto png_done;
1387
1388     if (!hasalpha)
1389     {
1390         png_byte *dst = tex.data;
1391         for (int i = height-1; i >= 0; i--)
1392         {
1393             png_byte *src = row_pointers[i];
1394             for (int j = 0; j < width; j++)
1395             {
1396                 dst[0] = src[0];
1397                 dst[1] = src[1];
1398                 dst[2] = src[2];
1399                 dst[3] = 0xFF;
1400                 src += 3;
1401                 dst += 4;
1402             }
1403         }
1404     }
1405
1406     else
1407     {
1408         png_byte *dst = tex.data;
1409         int pitch = width * 4;
1410         for (int i = height-1; i >= 0; i--, dst += pitch)
1411             memcpy(dst, row_pointers[i], pitch);
1412     }
1413
1414     tex.sizeX = width;
1415     tex.sizeY = height;
1416     tex.bpp = 32;
1417     retval = true;
1418
1419 png_done:
1420     png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
1421     if (fp)
1422         fclose(fp);
1423     return (retval);
1424 }
1425
1426
1427 static bool save_image(const char *file_name)
1428 {
1429     const char *ptr = strrchr((char *)file_name, '.');
1430     if (ptr)
1431     {
1432         if (strcasecmp(ptr+1, "png") == 0)
1433             return save_png(file_name);
1434     }
1435
1436     STUBBED("Unsupported image type");
1437     return false;
1438 }
1439
1440
1441 static bool save_png(const char *file_name)
1442 {
1443     FILE *fp = NULL;
1444     png_structp png_ptr = NULL;
1445     png_infop info_ptr = NULL;
1446     bool retval = false;
1447
1448     fp = fopen(file_name, "wb");
1449     if (fp == NULL)
1450         return false;
1451
1452     png_bytep *row_pointers = new png_bytep[kContextHeight];
1453     png_bytep screenshot = new png_byte[kContextWidth * kContextHeight * 3];
1454     if ((!screenshot) || (!row_pointers))
1455         goto save_png_done;
1456
1457     glGetError();
1458     glReadPixels(0, 0, kContextWidth, kContextHeight,
1459                  GL_RGB, GL_UNSIGNED_BYTE, screenshot);
1460     if (glGetError() != GL_NO_ERROR)
1461         goto save_png_done;
1462
1463     for (int i = 0; i < kContextHeight; i++)
1464         row_pointers[i] = screenshot + ((kContextWidth * ((kContextHeight-1) - i)) * 3);
1465
1466     png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
1467     if (png_ptr == NULL)
1468         goto save_png_done;
1469
1470     info_ptr = png_create_info_struct(png_ptr);
1471     if (info_ptr == NULL)
1472         goto save_png_done;
1473
1474     if (setjmp(png_jmpbuf(png_ptr)))
1475         goto save_png_done;
1476
1477     png_init_io(png_ptr, fp);
1478
1479     if (setjmp(png_jmpbuf(png_ptr)))
1480         goto save_png_done;
1481
1482     png_set_IHDR(png_ptr, info_ptr, kContextWidth, kContextHeight,
1483                  8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
1484                  PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
1485
1486     png_write_info(png_ptr, info_ptr);
1487
1488     if (setjmp(png_jmpbuf(png_ptr)))
1489         goto save_png_done;
1490
1491         png_write_image(png_ptr, row_pointers);
1492
1493         if (setjmp(png_jmpbuf(png_ptr)))
1494         goto save_png_done;
1495
1496     png_write_end(png_ptr, NULL);
1497     retval = true;
1498
1499 save_png_done:
1500     png_destroy_write_struct(&png_ptr, &info_ptr);
1501     delete[] screenshot;
1502     delete[] row_pointers;
1503     if (fp)
1504         fclose(fp);
1505     if (!retval)
1506         unlink(ConvertFileName(file_name));
1507     return retval;
1508 }
1509
1510
1511