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 {$INCLUDE ../shared/a_modes.inc}
  16 unit g_system;
  17
  18 interface
  19
  20   (* To fix:
  21    *   - Joystick support
  22    *   - Window resizing using SDL_VIDEORESIZE
  23    *   -- Linux: GL drawing area have wrong size
  24    *   -- OSX: GL context are recreated
  25    *)
  26
  27   uses Utils;
  28
  29   (* --- Utils --- *)
  30   function sys_GetTicks (): Int64;
  31   procedure sys_Delay (ms: Integer);
  32
  33   (* --- Graphics --- *)
  34   function sys_GetDispalyModes (bpp: Integer): SSArray;
  35   function sys_SetDisplayMode (w, h, bpp: Integer; fullscreen: Boolean): Boolean;
  36   procedure sys_EnableVSync (yes: Boolean);
  37   procedure sys_Repaint;
  38
  39   (* --- Input --- *)
  40   function sys_HandleInput (): Boolean;
  41   procedure sys_RequestQuit;
  42
  43   (* --- Init --- *)
  44   procedure sys_Init;
  45   procedure sys_Final;
  46
  47 implementation
  48
  49   uses
  50     SysUtils, SDL, GL,
  51     e_log, e_graphics, e_input,
  52     g_options, g_window, g_console, g_game, g_menu, g_gui, g_main;
  53
  54   var
  55     screen: PSDL_Surface;
  56
  57   (* --------- Utils --------- *)
  58
  59   function sys_GetTicks (): Int64;
  60   begin
  61     Result := SDL_GetTicks()
  62   end;
  63
  64   procedure sys_Delay (ms: Integer);
  65   begin
  66     SDL_Delay(ms)
  67   end;
  68
  69   (* --------- Graphics --------- *)
  70
  71   procedure UpdateSize (w, h: Integer);
  72   begin
  73     gWinSizeX := w;
  74     gWinSizeY := h;
  75     gWinRealPosX := 0;
  76     gWinRealPosY := 0;
  77     gScreenWidth := w;
  78     gScreenHeight := h;
  79     {$IFDEF ENABLE_HOLMES}
  80       fuiScrWdt := w;
  81       fuiScrHgt := h;
  82     {$ENDIF}
  83     e_ResizeWindow(w, h);
  84     e_InitGL;
  85     g_Game_SetupScreenSize;
  86     g_Menu_Reset;
  87     g_Game_ClearLoading;
  88   end;
  89
  90   function InitWindow (w, h, bpp: Integer; fullScreen: Boolean): Boolean;
  91     var flags: Uint32;
  92   begin
  93     e_LogWritefln('InitWindow %s %s %s %s', [w, h, bpp, fullscreen]);
  94     Result := False;
  95     SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
  96     SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
  97     SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
  98     SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
  99     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 100     SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8); // lights; it is enough to have 1-bit stencil buffer for lighting, but...
 101     flags := SDL_OPENGL or SDL_VIDEORESIZE;
 102     if fullScreen then
 103       flags := flags or SDL_FULLSCREEN;
 104     if (screen = nil) or (SDL_VideoModeOk(w, h, bpp, flags) <> 0) then
 105     begin
 106       SDL_FreeSurface(screen);
 107       screen := SDL_SetVideoMode(w, h, bpp, flags);
 108       if screen <> nil then
 109       begin
 110         SDL_WM_SetCaption('Doom 2D: Forever (SDL 1.2)', nil);
 111         UpdateSize(w, h);
 112         Result := True
 113       end
 114     end
 115     else
 116     begin
 117       e_LogWritefln('SDL: video mode not supported', [])
 118     end
 119   end;
 120
 121   procedure sys_Repaint;
 122   begin
 123     SDL_GL_SwapBuffers
 124   end;
 125
 126   procedure sys_EnableVSync (yes: Boolean);
 127   begin
 128     (* ??? *)
 129   end;
 130
 131   function sys_GetDispalyModes (bpp: Integer): SSArray;
 132     var m: PPSDL_Rect; f: TSDL_PixelFormat; i, count: Integer;
 133   begin
 134     SetLength(result, 0);
 135     FillChar(f, sizeof(f), 0);
 136     f.palette := nil;
 137     f.BitsPerPixel := bpp;
 138     f.BytesPerPixel := (bpp + 7) div 8;
 139     m := SDL_ListModes(@f, SDL_OPENGL or SDL_FULLSCREEN);
 140     if (m <> NIL) and (IntPtr(m) <> -1) then
 141     begin
 142       count := 0;
 143       while m[count] <> nil do inc(count);
 144       SetLength(result, count);
 145       for i := 0 to count - 1 do
 146         result[i] := IntToStr(m[i].w) + 'x' + IntToStr(m[i].h);
 147     end
 148   end;
 149
 150   function sys_SetDisplayMode (w, h, bpp: Integer; fullscreen: Boolean): Boolean;
 151   begin
 152     result := InitWindow(w, h, bpp, fullscreen)
 153   end;
 154
 155   (* --------- Input --------- *)
 156
 157   function Key2Stub (key: Integer): Integer;
 158     var x: Integer;
 159   begin
 160     case key of
 161       SDLK_ESCAPE: x := IK_ESCAPE;
 162       SDLK_RETURN: x := IK_RETURN;
 163       SDLK_KP_ENTER: x := IK_KPRETURN;
 164       SDLK_KP0: x := IK_KPINSERT;
 165       SDLK_UP: x := IK_UP;
 166       SDLK_KP8: x := IK_KPUP;
 167       SDLK_DOWN: x := IK_DOWN;
 168       SDLK_KP2: x := IK_KPDOWN;
 169       SDLK_LEFT: x := IK_LEFT;
 170       SDLK_KP4: x := IK_KPLEFT;
 171       SDLK_RIGHT: x := IK_RIGHT;
 172       SDLK_KP6: x := IK_KPRIGHT;
 173       SDLK_DELETE: x := IK_DELETE;
 174       SDLK_HOME: x := IK_HOME;
 175       SDLK_KP7: x := IK_KPHOME;
 176       SDLK_INSERT: x := IK_INSERT;
 177       SDLK_SPACE: x := IK_SPACE;
 178       SDLK_LSHIFT: x := IK_SHIFT;
 179       SDLK_LALT: x := IK_ALT;
 180       SDLK_TAB: x := IK_TAB;
 181       SDLK_PAGEUP: x := IK_PAGEUP;
 182       SDLK_KP9: x := IK_KPPAGEUP;
 183       SDLK_PAGEDOWN: x := IK_PAGEDN;
 184       SDLK_KP3: x := IK_KPPAGEDN;
 185       SDLK_KP5: x := IK_KP5;
 186       SDLK_NUMLOCK: x := IK_NUMLOCK;
 187       SDLK_KP_DIVIDE: x := IK_KPDIVIDE;
 188       SDLK_KP_MULTIPLY: x := IK_KPMULTIPLE;
 189       SDLK_KP_MINUS: x := IK_KPMINUS;
 190       SDLK_KP_PLUS: x := IK_KPPLUS;
 191       SDLK_KP_PERIOD: x := IK_KPDOT;
 192       SDLK_CAPSLOCK: x := IK_CAPSLOCK;
 193       SDLK_RSHIFT: x := IK_RSHIFT;
 194       SDLK_LCTRL: x := IK_CTRL;
 195       SDLK_RCTRL: x := IK_RCTRL;
 196       SDLK_RALT: x := IK_RALT;
 197       SDLK_LSUPER: x := IK_WIN;
 198       SDLK_RSUPER: x := IK_RWIN;
 199       SDLK_MENU: x := IK_MENU;
 200       SDLK_PRINT: x := IK_PRINTSCR;
 201       SDLK_SCROLLOCK: x := IK_SCROLLLOCK;
 202       SDLK_LEFTBRACKET: x := IK_LBRACKET;
 203       SDLK_RIGHTBRACKET: x := IK_RBRACKET;
 204       SDLK_SEMICOLON: x := IK_SEMICOLON;
 205       SDLK_QUOTE: x := IK_QUOTE;
 206       SDLK_BACKSLASH: x := IK_BACKSLASH;
 207       SDLK_SLASH: x := IK_SLASH;
 208       SDLK_COMMA: x := IK_COMMA;
 209       SDLK_PERIOD: x := IK_DOT;
 210       SDLK_EQUALS: x := IK_EQUALS;
 211       SDLK_0: x := IK_0;
 212       SDLK_1: x := IK_1;
 213       SDLK_2: x := IK_2;
 214       SDLK_3: x := IK_3;
 215       SDLK_4: x := IK_4;
 216       SDLK_5: x := IK_5;
 217       SDLK_6: x := IK_6;
 218       SDLK_7: x := IK_7;
 219       SDLK_8: x := IK_8;
 220       SDLK_9: x := IK_9;
 221       SDLK_F1: x := IK_F1;
 222       SDLK_F2: x := IK_F2;
 223       SDLK_F3: x := IK_F3;
 224       SDLK_F4: x := IK_F4;
 225       SDLK_F5: x := IK_F5;
 226       SDLK_F6: x := IK_F6;
 227       SDLK_F7: x := IK_F7;
 228       SDLK_F8: x := IK_F8;
 229       SDLK_F9: x := IK_F9;
 230       SDLK_F10: x := IK_F10;
 231       SDLK_F11: x := IK_F11;
 232       SDLK_F12: x := IK_F12;
 233       SDLK_END: x := IK_END;
 234       SDLK_KP1: x := IK_KPEND;
 235       SDLK_BACKSPACE: x := IK_BACKSPACE;
 236       SDLK_BACKQUOTE: x := IK_BACKQUOTE;
 237       SDLK_PAUSE: x := IK_PAUSE;
 238       SDLK_A..SDLK_Z: x := IK_A + (key - SDLK_A);
 239       SDLK_MINUS: x := IK_MINUS;
 240       SDLK_RMETA: x := IK_RMETA;
 241       SDLK_LMETA: x := IK_LMETA;
 242     else
 243       x := IK_INVALID
 244     end;
 245     result := x
 246   end;
 247
 248   procedure HandleKeyboard (var ev: TSDL_KeyboardEvent);
 249     var down, repeated: Boolean; key: Integer; ch: Char;
 250   begin
 251     key := Key2Stub(ev.keysym.sym);
 252     down := (ev.type_ = SDL_KEYDOWN);
 253     repeated := down and e_KeyPressed(key);
 254     ch := wchar2win(WideChar(ev.keysym.unicode));
 255     if g_dbg_input then
 256       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)]);
 257     if not repeated then
 258     begin
 259       e_KeyUpDown(key, down);
 260       g_Console_ProcessBind(key, down);
 261     end
 262     else if gConsoleShow or gChatShow or (g_ActiveWindow <> nil) then
 263     begin
 264       KeyPress(key)
 265     end;
 266     if down and IsValid1251(ev.keysym.unicode) and IsPrintable1251(ch) then
 267       CharPress(ch)
 268   end;
 269
 270   function sys_HandleInput (): Boolean;
 271     var ev: TSDL_Event;
 272   begin
 273     result := false;
 274     while SDL_PollEvent(@ev) <> 0 do
 275     begin
 276       case ev.type_ of
 277         SDL_QUITEV: result := true;
 278         SDL_VIDEORESIZE: InitWindow(ev.resize.w, ev.resize.h, gBPP, gFullscreen);
 279         SDL_KEYUP, SDL_KEYDOWN: HandleKeyboard(ev.key);
 280       end
 281     end
 282   end;
 283
 284   procedure sys_RequestQuit;
 285     var ev: TSDL_Event;
 286   begin
 287     ev.quit.type_ := SDL_QUITEV;
 288     SDL_PushEvent(@ev)
 289   end;
 290
 291   (* --------- Init --------- *)
 292
 293   procedure sys_Init;
 294     var flags: Uint32; ok: Boolean;
 295   begin
 296     flags := SDL_INIT_VIDEO or SDL_INIT_AUDIO or
 297              SDL_INIT_TIMER or SDL_INIT_JOYSTICK
 298              (*or SDL_INIT_NOPARACHUTE*);
 299     if SDL_Init(flags) <> 0 then
 300       raise Exception.Create('SDL: Init failed: ' + SDL_GetError());
 301     ok := InitWindow(gScreenWidth, gScreenHeight, gBPP, gFullScreen);
 302     if not ok then
 303       raise Exception.Create('SDL: failed to set videomode: ' + SDL_GetError);
 304     SDL_EnableUNICODE(1);
 305     SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
 306   end;
 307
 308   procedure sys_Final;
 309   begin
 310     e_WriteLog('Releasing SDL', TMsgType.Notify);
 311     SDL_FreeSurface(screen);
 312     SDL_Quit
 313   end;
 314
 315 end.