hedgewars/SDLh.pas
author unc0rr
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(*
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 * Hedgewars, a worms-like game
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 * Copyright (c) 2004-2007 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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 *)
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unit SDLh;
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interface
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{$IFDEF LINUX}
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{$DEFINE UNIX}
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{$ENDIF}
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{$IFDEF FREEBSD}
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{$DEFINE UNIX}
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{$ENDIF}
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{$IFDEF UNIX}
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{$linklib c}
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{$linklib pthread}
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{$ENDIF}
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{$PACKRECORDS C}
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(*  SDL *)
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const {$IFDEF WIN32}
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      SDLLibName = 'SDL.dll';
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      {$ENDIF}
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      {$IFDEF UNIX}
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      SDLLibName = 'libSDL.so';
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      {$ENDIF}
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      SDL_SWSURFACE   = $00000000;
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      SDL_HWSURFACE   = $00000001;
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      SDL_ASYNCBLIT   = $00000004;
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      SDL_ANYFORMAT   = $10000000;
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      SDL_HWPALETTE   = $20000000;
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      SDL_DOUBLEBUF   = $40000000;
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      SDL_FULLSCREEN  = $80000000;
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      SDL_NOFRAME     = $00000020;
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      SDL_HWACCEL     = $00000100;
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      SDL_SRCCOLORKEY = $00001000;
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      SDL_RLEACCEL    = $00004000;
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      SDL_NOEVENT     = 0;
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      SDL_ACTIVEEVENT = 1;
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      SDL_KEYDOWN     = 2;
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      SDL_KEYUP       = 3;
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      SDL_QUITEV      = 12;
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      SDL_APPINPUTFOCUS = 2;
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      SDL_INIT_VIDEO  = $00000020;
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      SDL_INIT_AUDIO  = $00000010;
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type PSDL_Rect = ^TSDL_Rect;
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     TSDL_Rect = record
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                 x, y: SmallInt;
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                 w, h: Word;
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                 end;
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     TPoint = record
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              X: LongInt;
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              Y: LongInt;
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              end;
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     PSDL_PixelFormat = ^TSDL_PixelFormat;
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     TSDL_PixelFormat = record
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                        palette: Pointer;
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                        BitsPerPixel : Byte;
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                        BytesPerPixel: Byte;
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                        Rloss : Byte;
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                        Gloss : Byte;
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                        Bloss : Byte;
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                        Aloss : Byte;
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                        Rshift: Byte;
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                        Gshift: Byte;
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                        Bshift: Byte;
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                        Ashift: Byte;
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                        RMask : Longword;
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                        GMask : Longword;
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                        BMask : Longword;
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                        AMask : Longword;
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                        colorkey: Longword;
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                        alpha : Byte;
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                        end;
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     PSDL_Surface = ^TSDL_Surface;
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     TSDL_Surface = record
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                    flags : Longword;
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                    format: PSDL_PixelFormat;
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                    w, h  : LongInt;
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                    pitch : Word;
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                    pixels: Pointer;
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                    offset: LongInt;
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                    end;
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     PSDL_Color = ^TSDL_Color;
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     TSDL_Color = record
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                  case byte of
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                       0: (r: Byte;
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                           g: Byte;
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                           b: Byte;
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                           unused: Byte;
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                          );
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(* workaround over freepascal bug.
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   See http://www.freepascal.org/mantis/view.php?id=7613 for details *)
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                       1: (value: Longword);
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                  end;
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     PSDL_RWops = ^TSDL_RWops;
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     TSeek = function( context: PSDL_RWops; offset: LongInt; whence: LongInt ): LongInt; cdecl;
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     TRead = function( context: PSDL_RWops; Ptr: Pointer; size: LongInt; maxnum : LongInt ): LongInt;  cdecl;
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     TWrite = function( context: PSDL_RWops; Ptr: Pointer; size: LongInt; num: LongInt ): LongInt; cdecl;
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     TClose = function( context: PSDL_RWops ): LongInt; cdecl;
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     TStdio = record
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              autoclose: LongInt;
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              fp: pointer;
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              end;
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     TMem = record
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            base: PByte;
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            here: PByte;
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            stop: PByte;
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            end;
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     TUnknown = record
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                data1: Pointer;
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                end;
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     TSDL_RWops = record
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                  seek: TSeek;
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                  read: TRead;
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                  write: TWrite;
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                  close: TClose;
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                  type_: Longword;
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                  case Byte of
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                       0: (stdio: TStdio);
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                       1: (mem: TMem);
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                       2: (unknown: TUnknown);
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                       end;
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     TSDL_KeySym = record
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                   scancode: Byte;
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                   sym: Longword;
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                   modifier: Longword;
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                   unicode: Word;
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                   end;
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     TSDL_ActiveEvent = record
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	                type_: byte;
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                        gain: byte;
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                        state: byte;
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                        end;
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     TSDL_KeyboardEvent = record
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                          type_: Byte;
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                          which: Byte;
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                          state: Byte;
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                          keysym: TSDL_KeySym;
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                          end;
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     TSDL_QuitEvent = record
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                      type_: Byte;
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                      end;
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     PSDL_Event = ^TSDL_Event;
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     TSDL_Event = record
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                  case Byte of
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                       SDL_NOEVENT: (type_: byte);
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                       SDL_ACTIVEEVENT: (active: TSDL_ActiveEvent);
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                       SDL_KEYDOWN, SDL_KEYUP: (key: TSDL_KeyboardEvent);
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                       SDL_QUITEV: (quit: TSDL_QuitEvent);
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                       end;
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     PByteArray = ^TByteArray;
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     TByteArray = array[0..65535] of Byte;
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     PLongWordArray = ^TLongWordArray;
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     TLongWordArray = array[0..16383] of LongWord;
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function  SDL_Init(flags: Longword): LongInt; cdecl; external SDLLibName;
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procedure SDL_Quit; cdecl; external SDLLibName;
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function  SDL_VideoDriverName(var namebuf; maxlen: LongInt): PChar; cdecl; external SDLLibName;
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procedure SDL_EnableUNICODE(enable: LongInt); cdecl; external SDLLibName;
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procedure SDL_Delay(msec: Longword); cdecl; external SDLLibName;
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function  SDL_GetTicks: Longword; cdecl; external SDLLibName;
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function  SDL_MustLock(Surface: PSDL_Surface): Boolean;
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function  SDL_LockSurface(Surface: PSDL_Surface): LongInt; cdecl; external SDLLibName;
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procedure SDL_UnlockSurface(Surface: PSDL_Surface); cdecl; external SDLLibName;
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function  SDL_GetError: PChar; cdecl; external SDLLibName;
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function  SDL_SetVideoMode(width, height, bpp: LongInt; flags: Longword): PSDL_Surface; cdecl; external SDLLibName;
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function  SDL_CreateRGBSurface(flags: Longword; Width, Height, Depth: LongInt; RMask, GMask, BMask, AMask: Longword): PSDL_Surface; cdecl; external SDLLibName;
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function  SDL_CreateRGBSurfaceFrom(pixels: Pointer; width, height, depth, pitch: LongInt; RMask, GMask, BMask, AMask: Longword): PSDL_Surface; cdecl; external SDLLibName;
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procedure SDL_FreeSurface(Surface: PSDL_Surface); cdecl; external SDLLibName;
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function  SDL_SetColorKey(surface: PSDL_Surface; flag, key: Longword): LongInt; cdecl; external SDLLibName;
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function  SDL_UpperBlit(src: PSDL_Surface; srcrect: PSDL_Rect; dst: PSDL_Surface; dstrect: PSDL_Rect): LongInt; cdecl; external SDLLibName;
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function  SDL_FillRect(dst: PSDL_Surface; dstrect: PSDL_Rect; color: Longword): LongInt; cdecl; external SDLLibName;
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procedure SDL_UpdateRect(Screen: PSDL_Surface; x, y: LongInt; w, h: Longword); cdecl; external SDLLibName;
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function  SDL_Flip(Screen: PSDL_Surface): LongInt; cdecl; external SDLLibName;
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procedure SDL_GetRGB(pixel: Longword; fmt: PSDL_PixelFormat; r, g, b: PByte); cdecl; external SDLLibName;
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function  SDL_MapRGB(format: PSDL_PixelFormat; r, g, b: Byte): Longword; cdecl; external SDLLibName;
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function  SDL_DisplayFormat(Surface: PSDL_Surface): PSDL_Surface; cdecl; external SDLLibName;
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function  SDL_DisplayFormatAlpha(Surface: PSDL_Surface): PSDL_Surface; cdecl; external SDLLibName;
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function  SDL_RWFromFile(filename, mode: PChar): PSDL_RWops; cdecl; external SDLLibName;
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function  SDL_SaveBMP_RW(surface: PSDL_Surface; dst: PSDL_RWops; freedst: LongInt): LongInt; cdecl; external SDLLibName;
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function  SDL_GetKeyState(numkeys: PLongInt): PByteArray; cdecl; external SDLLibName;
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function  SDL_GetMouseState(x, y: PInteger): Byte; cdecl; external SDLLibName;
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function  SDL_GetKeyName(key: Longword): PChar; cdecl; external SDLLibName;
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procedure SDL_WarpMouse(x, y: Word); cdecl; external SDLLibName;
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function  SDL_PollEvent(event: PSDL_Event): LongInt; cdecl; external SDLLibName;
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function  SDL_ShowCursor(toggle: LongInt): LongInt; cdecl; external SDLLibName;
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procedure SDL_WM_SetCaption(title: PChar; icon: PChar); cdecl; external SDLLibName;
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(*  TTF  *)
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const {$IFDEF WIN32}
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      SDL_TTFLibName = 'SDL_ttf.dll';
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      {$ENDIF}
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      {$IFDEF UNIX}
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      SDL_TTFLibName = 'libSDL_ttf.so';
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      {$ENDIF}
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      TTF_STYLE_NORMAL = 0;
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      TTF_STYLE_BOLD   = 1;
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      TTF_STYLE_ITALIC = 2;
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type PTTF_Font = ^TTTF_font;
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     TTTF_Font = record
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                 end;
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function TTF_Init: LongInt; cdecl; external SDL_TTFLibName;
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procedure TTF_Quit; cdecl; external SDL_TTFLibName;
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function TTF_SizeUTF8(font: PTTF_Font; const text: PChar; var w, h: LongInt): LongInt; cdecl; external SDL_TTFLibName;
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(* TSDL_Color -> Longword conversion is workaround over freepascal bug.
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   See http://www.freepascal.org/mantis/view.php?id=7613 for details *)
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function TTF_RenderUTF8_Solid(font: PTTF_Font; const text: PChar; fg: Longword): PSDL_Surface; cdecl; external SDL_TTFLibName;
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function TTF_RenderUTF8_Blended(font: PTTF_Font; const text: PChar; fg: Longword): PSDL_Surface; cdecl; external SDL_TTFLibName;
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function TTF_OpenFont(const filename: PChar; size: LongInt): PTTF_Font; cdecl; external SDL_TTFLibName;
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procedure TTF_SetFontStyle(font: PTTF_Font; style: LongInt); cdecl; external SDL_TTFLibName;
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(*  SDL_mixer *)
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const {$IFDEF WIN32}
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      SDL_MixerLibName = 'SDL_mixer.dll';
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      {$ENDIF}
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      {$IFDEF UNIX}
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      SDL_MixerLibName = 'libSDL_mixer.so';
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      {$ENDIF}
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const MIX_MAX_VOLUME = 128;
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type PMixChunk = ^TMixChunk;
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     TMixChunk = record
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                 allocated: Longword;
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                 abuf     : PByte;
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                 alen     : Longword;
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                 volume   : PByte;
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                 end;
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     TMusic = (MUS_CMD, MUS_WAV, MUS_MOD, MUS_MID, MUS_OGG, MUS_MP3);
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     TMix_Fading = (MIX_NO_FADING, MIX_FADING_OUT, MIX_FADING_IN);
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     TMidiSong = record
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               samples : LongInt;
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               events  : pointer;
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               end;
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     TMusicUnion = record
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        case Byte of
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             0: ( midi : TMidiSong );
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             1: ( ogg  : pointer);
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             end;
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     PMixMusic = ^TMixMusic;
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     TMixMusic = record
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                 end;
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function  Mix_OpenAudio(frequency: LongInt; format: Word; channels: LongInt; chunksize: LongInt): LongInt; cdecl; external SDL_MixerLibName;
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procedure Mix_CloseAudio; cdecl; external SDL_MixerLibName;
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function  Mix_Volume(channel: LongInt; volume: LongInt): LongInt; cdecl; external SDL_MixerLibName;
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function  Mix_SetDistance(channel: LongInt; distance: Byte): LongInt;  cdecl; external SDL_MixerLibName;
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function  Mix_VolumeMusic(volume: LongInt): LongInt; cdecl; external SDL_MixerLibName;
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function  Mix_AllocateChannels(numchans: LongInt): LongInt; cdecl; external SDL_MixerLibName;
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procedure Mix_FreeChunk(chunk: PMixChunk); cdecl; external SDL_MixerLibName;
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procedure Mix_FreeMusic(music: PMixMusic); cdecl; external SDL_MixerLibName;
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function  Mix_LoadWAV_RW(src: PSDL_RWops; freesrc: LongInt): PMixChunk; cdecl; external SDL_MixerLibName;
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function  Mix_LoadMUS(const filename: PChar): PMixMusic; cdecl; external SDL_MixerLibName;
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function  Mix_Playing(channel: LongInt): LongInt; cdecl; external SDL_MixerLibName;
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function  Mix_PlayingMusic: LongInt; cdecl; external SDL_MixerLibName;
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function  Mix_PlayChannelTimed(channel: LongInt; chunk: PMixChunk; loops: LongInt; ticks: LongInt): LongInt; cdecl; external SDL_MixerLibName;
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function  Mix_PlayMusic(music: PMixMusic; loops: LongInt): LongInt; cdecl; external SDL_MixerLibName;
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function  Mix_HaltChannel(channel: LongInt): LongInt; cdecl; external SDL_MixerLibName;
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(*  SDL_image *)
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const {$IFDEF WIN32}
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      SDL_ImageLibName = 'SDL_image.dll';
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      {$ENDIF}
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      {$IFDEF UNIX}
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      SDL_ImageLibName = 'libSDL_image.so';
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      {$ENDIF}
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function IMG_Load(const _file: PChar): PSDL_Surface; cdecl; external SDL_ImageLibName;
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(*  SDL_net *)
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const {$IFDEF WIN32}
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      SDL_NetLibName = 'SDL_net.dll';
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      {$ENDIF}
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      {$IFDEF UNIX}
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      SDL_NetLibName = 'libSDL_net.so';
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      {$ENDIF}
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type TIPAddress = record
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                  host: Longword;
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                  port: Word;
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                  end;
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     PTCPSocket = ^TTCPSocket;
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     TTCPSocket = record
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                  ready: LongInt;
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                  channel: LongInt;
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                  remoteAddress: TIPaddress;
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                  localAddress: TIPaddress;
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                  sflag: LongInt;
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                  end;
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     PSDLNet_SocketSet = ^TSDLNet_SocketSet;
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     TSDLNet_SocketSet = record
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                         numsockets,
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                         maxsockets: LongInt;
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                         sockets: PTCPSocket;
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                         end;
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function SDLNet_Init: LongInt; cdecl; external SDL_NetLibName;
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procedure SDLNet_Quit; cdecl; external SDL_NetLibName;
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function SDLNet_AllocSocketSet(maxsockets: LongInt): PSDLNet_SocketSet; cdecl; external SDL_NetLibName;
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function SDLNet_ResolveHost(var address: TIPaddress; host: PCHar; port: Word): LongInt; cdecl; external SDL_NetLibName;
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function SDLNet_TCP_Accept(server: PTCPsocket): PTCPSocket; cdecl; external SDL_NetLibName;
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function SDLNet_TCP_Open(var ip: TIPaddress): PTCPSocket; cdecl; external SDL_NetLibName;
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function SDLNet_TCP_Send(sock: PTCPsocket; data: Pointer; len: LongInt): LongInt; cdecl; external SDL_NetLibName;
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function SDLNet_TCP_Recv(sock: PTCPsocket; data: Pointer; len: LongInt): LongInt; cdecl; external SDL_NetLibName;
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procedure SDLNet_TCP_Close(sock: PTCPsocket); cdecl; external SDL_NetLibName;
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procedure SDLNet_FreeSocketSet(_set: PSDLNet_SocketSet); cdecl; external SDL_NetLibName;
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function SDLNet_AddSocket(_set: PSDLNet_SocketSet; sock: PTCPSocket): LongInt; cdecl; external SDL_NetLibName;
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function SDLNet_CheckSockets(_set: PSDLNet_SocketSet; timeout: LongInt): LongInt; cdecl; external SDL_NetLibName;
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procedure SDLNet_Write16(value: Word; buf: pointer); cdecl; external SDL_NetLibName;
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procedure SDLNet_Write32(value: LongWord; buf: pointer); cdecl; external SDL_NetLibName;
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function SDLNet_Read16(buf: pointer): Word; cdecl; external SDL_NetLibName;
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function SDLNet_Read32(buf: pointer): LongWord; cdecl; external SDL_NetLibName;
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implementation
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function SDL_MustLock(Surface: PSDL_Surface): Boolean;
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begin
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SDL_MustLock:= ( surface^.offset <> 0 )
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       or(( surface^.flags and (SDL_HWSURFACE or SDL_ASYNCBLIT or SDL_RLEACCEL)) <> 0)
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end;
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end.