src/game/sdl/g_system.pas

   1 (* Copyright (C)  Doom 2D: Forever Developers
   2  *
   3  * This program is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, version 3 of the License ONLY.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  14  *)
  15 {$INCLUDE ../shared/a_modes.inc}
  16 unit g_system;
  17
  18 interface
  19
  20   (* To fix:
  21    *   - Joystick support
  22    *)
  23
  24   uses Utils;
  25
  26   (* --- Utils --- *)
  27   function sys_GetTicks (): Int64;
  28   procedure sys_Delay (ms: Integer);
  29
  30   (* --- Graphics --- *)
  31   function sys_GetDispalyModes (bpp: Integer): SSArray;
  32   function sys_SetDisplayMode (w, h, bpp: Integer; fullscreen: Boolean): Boolean;
  33   procedure sys_EnableVSync (yes: Boolean);
  34   procedure sys_Repaint;
  35
  36   (* --- Input --- *)
  37   function sys_HandleInput (): Boolean;
  38   procedure sys_RequestQuit;
  39
  40   (* --- Init --- *)
  41   procedure sys_Init;
  42   procedure sys_Final;
  43
  44 implementation
  45
  46   uses
  47     SysUtils, SDL, GL,
  48     e_log, e_graphics, e_input,
  49     g_options, g_window, g_console, g_game, g_menu, g_gui, g_main;
  50
  51   var
  52     userResize: Boolean;
  53     modeResize: Integer;
  54     screen: PSDL_Surface;
  55
  56   (* --------- Utils --------- *)
  57
  58   function sys_GetTicks (): Int64;
  59   begin
  60     Result := SDL_GetTicks()
  61   end;
  62
  63   procedure sys_Delay (ms: Integer);
  64   begin
  65     SDL_Delay(ms)
  66   end;
  67
  68   (* --------- Graphics --------- *)
  69
  70   procedure UpdateSize (w, h: Integer);
  71   begin
  72     gWinSizeX := w;
  73     gWinSizeY := h;
  74     gWinRealPosX := 0;
  75     gWinRealPosY := 0;
  76     gScreenWidth := w;
  77     gScreenHeight := h;
  78     {$IFDEF ENABLE_HOLMES}
  79       fuiScrWdt := w;
  80       fuiScrHgt := h;
  81     {$ENDIF}
  82     e_ResizeWindow(w, h);
  83     e_InitGL;
  84     g_Game_SetupScreenSize;
  85     g_Menu_Reset;
  86     g_Game_ClearLoading;
  87   end;
  88
  89   function InitWindow (w, h, bpp: Integer; fullScreen: Boolean): Boolean;
  90     var flags: Uint32;
  91   begin
  92     e_LogWritefln('InitWindow %s %s %s %s', [w, h, bpp, fullscreen]);
  93     Result := False;
  94     SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
  95     SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
  96     SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
  97     SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
  98     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
  99     SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8); // lights; it is enough to have 1-bit stencil buffer for lighting, but...
 100     flags := SDL_OPENGL;
 101     if fullScreen then flags := flags or SDL_FULLSCREEN;
 102     if userResize then flags := flags or SDL_VIDEORESIZE;
 103     if (screen = nil) or (SDL_VideoModeOk(w, h, bpp, flags) <> 0) then
 104     begin
 105       SDL_FreeSurface(screen);
 106       screen := SDL_SetVideoMode(w, h, bpp, flags);
 107       if screen <> nil then
 108       begin
 109         SDL_WM_SetCaption('Doom 2D: Forever (SDL 1.2)', nil);
 110         UpdateSize(w, h);
 111         Result := True
 112       end
 113     end
 114     else
 115     begin
 116       e_LogWritefln('SDL: video mode not supported', [])
 117     end
 118   end;
 119
 120   procedure sys_Repaint;
 121   begin
 122     SDL_GL_SwapBuffers
 123   end;
 124
 125   procedure sys_EnableVSync (yes: Boolean);
 126   begin
 127     (* ??? *)
 128   end;
 129
 130   function sys_GetDispalyModes (bpp: Integer): SSArray;
 131     var m: PPSDL_Rect; f: TSDL_PixelFormat; i, count: Integer;
 132   begin
 133     SetLength(result, 0);
 134     FillChar(f, sizeof(f), 0);
 135     f.palette := nil;
 136     f.BitsPerPixel := bpp;
 137     f.BytesPerPixel := (bpp + 7) div 8;
 138     m := SDL_ListModes(@f, SDL_OPENGL or SDL_FULLSCREEN);
 139     if (m <> NIL) and (IntPtr(m) <> -1) then
 140     begin
 141       count := 0;
 142       while m[count] <> nil do inc(count);
 143       SetLength(result, count);
 144       for i := 0 to count - 1 do
 145         result[i] := IntToStr(m[i].w) + 'x' + IntToStr(m[i].h);
 146     end
 147   end;
 148
 149   function sys_SetDisplayMode (w, h, bpp: Integer; fullscreen: Boolean): Boolean;
 150   begin
 151     result := InitWindow(w, h, bpp, fullscreen)
 152   end;
 153
 154   (* --------- Input --------- *)
 155
 156   function Key2Stub (key: Integer): Integer;
 157     var x: Integer;
 158   begin
 159     case key of
 160       SDLK_ESCAPE: x := IK_ESCAPE;
 161       SDLK_RETURN: x := IK_RETURN;
 162       SDLK_KP_ENTER: x := IK_KPRETURN;
 163       SDLK_KP0: x := IK_KPINSERT;
 164       SDLK_UP: x := IK_UP;
 165       SDLK_KP8: x := IK_KPUP;
 166       SDLK_DOWN: x := IK_DOWN;
 167       SDLK_KP2: x := IK_KPDOWN;
 168       SDLK_LEFT: x := IK_LEFT;
 169       SDLK_KP4: x := IK_KPLEFT;
 170       SDLK_RIGHT: x := IK_RIGHT;
 171       SDLK_KP6: x := IK_KPRIGHT;
 172       SDLK_DELETE: x := IK_DELETE;
 173       SDLK_HOME: x := IK_HOME;
 174       SDLK_KP7: x := IK_KPHOME;
 175       SDLK_INSERT: x := IK_INSERT;
 176       SDLK_SPACE: x := IK_SPACE;
 177       SDLK_LSHIFT: x := IK_SHIFT;
 178       SDLK_LALT: x := IK_ALT;
 179       SDLK_TAB: x := IK_TAB;
 180       SDLK_PAGEUP: x := IK_PAGEUP;
 181       SDLK_KP9: x := IK_KPPAGEUP;
 182       SDLK_PAGEDOWN: x := IK_PAGEDN;
 183       SDLK_KP3: x := IK_KPPAGEDN;
 184       SDLK_KP5: x := IK_KP5;
 185       SDLK_NUMLOCK: x := IK_NUMLOCK;
 186       SDLK_KP_DIVIDE: x := IK_KPDIVIDE;
 187       SDLK_KP_MULTIPLY: x := IK_KPMULTIPLE;
 188       SDLK_KP_MINUS: x := IK_KPMINUS;
 189       SDLK_KP_PLUS: x := IK_KPPLUS;
 190       SDLK_KP_PERIOD: x := IK_KPDOT;
 191       SDLK_CAPSLOCK: x := IK_CAPSLOCK;
 192       SDLK_RSHIFT: x := IK_RSHIFT;
 193       SDLK_LCTRL: x := IK_CTRL;
 194       SDLK_RCTRL: x := IK_RCTRL;
 195       SDLK_RALT: x := IK_RALT;
 196       SDLK_LSUPER: x := IK_WIN;
 197       SDLK_RSUPER: x := IK_RWIN;
 198       SDLK_MENU: x := IK_MENU;
 199       SDLK_PRINT: x := IK_PRINTSCR;
 200       SDLK_SCROLLOCK: x := IK_SCROLLLOCK;
 201       SDLK_LEFTBRACKET: x := IK_LBRACKET;
 202       SDLK_RIGHTBRACKET: x := IK_RBRACKET;
 203       SDLK_SEMICOLON: x := IK_SEMICOLON;
 204       SDLK_QUOTE: x := IK_QUOTE;
 205       SDLK_BACKSLASH: x := IK_BACKSLASH;
 206       SDLK_SLASH: x := IK_SLASH;
 207       SDLK_COMMA: x := IK_COMMA;
 208       SDLK_PERIOD: x := IK_DOT;
 209       SDLK_EQUALS: x := IK_EQUALS;
 210       SDLK_0: x := IK_0;
 211       SDLK_1: x := IK_1;
 212       SDLK_2: x := IK_2;
 213       SDLK_3: x := IK_3;
 214       SDLK_4: x := IK_4;
 215       SDLK_5: x := IK_5;
 216       SDLK_6: x := IK_6;
 217       SDLK_7: x := IK_7;
 218       SDLK_8: x := IK_8;
 219       SDLK_9: x := IK_9;
 220       SDLK_F1: x := IK_F1;
 221       SDLK_F2: x := IK_F2;
 222       SDLK_F3: x := IK_F3;
 223       SDLK_F4: x := IK_F4;
 224       SDLK_F5: x := IK_F5;
 225       SDLK_F6: x := IK_F6;
 226       SDLK_F7: x := IK_F7;
 227       SDLK_F8: x := IK_F8;
 228       SDLK_F9: x := IK_F9;
 229       SDLK_F10: x := IK_F10;
 230       SDLK_F11: x := IK_F11;
 231       SDLK_F12: x := IK_F12;
 232       SDLK_END: x := IK_END;
 233       SDLK_KP1: x := IK_KPEND;
 234       SDLK_BACKSPACE: x := IK_BACKSPACE;
 235       SDLK_BACKQUOTE: x := IK_BACKQUOTE;
 236       SDLK_PAUSE: x := IK_PAUSE;
 237       SDLK_A..SDLK_Z: x := IK_A + (key - SDLK_A);
 238       SDLK_MINUS: x := IK_MINUS;
 239       SDLK_RMETA: x := IK_RMETA;
 240       SDLK_LMETA: x := IK_LMETA;
 241     else
 242       x := IK_INVALID
 243     end;
 244     result := x
 245   end;
 246
 247   procedure HandleKeyboard (var ev: TSDL_KeyboardEvent);
 248     var down, repeated: Boolean; key: Integer; ch: Char;
 249   begin
 250     key := Key2Stub(ev.keysym.sym);
 251     down := (ev.type_ = SDL_KEYDOWN);
 252     repeated := down and e_KeyPressed(key);
 253     ch := wchar2win(WideChar(ev.keysym.unicode));
 254     if g_dbg_input then
 255       e_LogWritefln('Input Debug: keysym, down=%s, sym=%s, state=%s, unicode=%s, stubsym=%s, cp1251=%s', [down, ev.keysym.sym, ev.state, ev.keysym.unicode, key, Ord(ch)]);
 256     if not repeated then
 257     begin
 258       e_KeyUpDown(key, down);
 259       g_Console_ProcessBind(key, down);
 260     end
 261     else if gConsoleShow or gChatShow or (g_ActiveWindow <> nil) then
 262     begin
 263       KeyPress(key)
 264     end;
 265     if down and IsValid1251(ev.keysym.unicode) and IsPrintable1251(ch) then
 266       CharPress(ch)
 267   end;
 268
 269   function sys_HandleInput (): Boolean;
 270     var ev: TSDL_Event;
 271   begin
 272     result := false;
 273     while SDL_PollEvent(@ev) <> 0 do
 274     begin
 275       case ev.type_ of
 276         SDL_QUITEV: result := true;
 277         SDL_VIDEORESIZE:
 278           begin
 279             if g_dbg_input then
 280               e_LogWritefln('Input Debug: SDL_VIDEORESIZE %s %s', [ev.resize.w, ev.resize.h]);
 281             if modeResize = 1 then
 282               UpdateSize(ev.resize.w, ev.resize.h)
 283             else if modeResize > 1 then
 284               InitWindow(ev.resize.w, ev.resize.h, gBPP, gFullscreen)
 285           end;
 286         SDL_KEYUP, SDL_KEYDOWN: HandleKeyboard(ev.key);
 287       end
 288     end
 289   end;
 290
 291   procedure sys_RequestQuit;
 292     var ev: TSDL_Event;
 293   begin
 294     ev.quit.type_ := SDL_QUITEV;
 295     SDL_PushEvent(@ev)
 296   end;
 297
 298   (* --------- Init --------- *)
 299
 300   procedure sys_Init;
 301     var flags: Uint32; ok: Boolean;
 302   begin
 303     flags := SDL_INIT_VIDEO or SDL_INIT_AUDIO or
 304              SDL_INIT_TIMER or SDL_INIT_JOYSTICK
 305              (*or SDL_INIT_NOPARACHUTE*);
 306     if SDL_Init(flags) <> 0 then
 307       raise Exception.Create('SDL: Init failed: ' + SDL_GetError());
 308     ok := InitWindow(gScreenWidth, gScreenHeight, gBPP, gFullScreen);
 309     if not ok then
 310       raise Exception.Create('SDL: failed to set videomode: ' + SDL_GetError);
 311     SDL_EnableUNICODE(1);
 312     SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
 313   end;
 314
 315   procedure sys_Final;
 316   begin
 317     e_WriteLog('Releasing SDL', TMsgType.Notify);
 318     SDL_FreeSurface(screen);
 319     SDL_Quit
 320   end;
 321
 322 initialization
 323   (* window resize are broken both on linux and osx, so disabled by default *)
 324   conRegVar('sdl_allow_resize', @userResize, 'allow to resize window by user', 'allow to resize window by user');
 325   conRegVar('sdl_resize_action', @modeResize, 'set window resize mode (0: ignore, 1: change, 2: reset)', '');
 326   userResize := false;
 327   modeResize := 0;
 328 end.