(*

 * Hedgewars, a worms-like game

 * Copyright (c) 2004, 2005 Andrey Korotaev <unC0Rr@gmail.com>

 *

 * Distributed under the terms of the BSD-modified licence:

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * with the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 *    this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 *    this list of conditions and the following disclaimer in the documentation

 *    and/or other materials provided with the distribution.

 * 3. The name of the author may not be used to endorse or promote products

 *    derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED

 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO

 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *)

unit SDLh;

interface

{$IFDEF LINUX}

{$DEFINE UNIX}

{$ENDIF}

{$IFDEF FREEBSD}

{$DEFINE UNIX}

{$ENDIF}

{$IFDEF UNIX}

{$linklib c}

{$linklib pthread}  // кажется, это только для FreeBSD, не уверен

{$ENDIF}

{$IFDEF FPC}

  {$MODE Delphi}

  {$PACKRECORDS 4}

{$ENDIF}

(*  SDL *)

const {$IFDEF WIN32}

      SDLLibName = 'SDL.dll';

      {$ENDIF}

      {$IFDEF UNIX}

      SDLLibName = 'libSDL.so';

      {$ENDIF}

      SDL_SWSURFACE   = $00000000;

      SDL_HWSURFACE   = $00000001;

      SDL_ASYNCBLIT   = $00000004;

      SDL_ANYFORMAT   = $10000000;

      SDL_HWPALETTE   = $20000000;

      SDL_DOUBLEBUF   = $40000000;

      SDL_FULLSCREEN  = $80000000;

      SDL_NOFRAME     = $00000020;

      SDL_HWACCEL     = $00000100;

      SDL_SRCCOLORKEY = $00001000;

      SDL_RLEACCEL    = $00004000;

      SDL_NOEVENT     = 0;

      SDL_KEYDOWN     = 2;

      SDL_KEYUP       = 3;

      SDL_QUITEV      = 12;

      SDL_INIT_VIDEO  = $00000020;

      SDL_INIT_AUDIO  = $00000010;

type PSDL_Rect = ^TSDL_Rect;

     TSDL_Rect = record

                 x, y: SmallInt;

                 w, h: Word;

                 end;

     TPoint = record

              X: Integer;

              Y: Integer;

              end;

     PSDL_PixelFormat = ^TSDL_PixelFormat;

     TSDL_PixelFormat = record

                        palette: Pointer;

                        BitsPerPixel : Byte;

                        BytesPerPixel: Byte;

                        Rloss : Byte;

                        Gloss : Byte;

                        Bloss : Byte;

                        Aloss : Byte;

                        Rshift: Byte;

                        Gshift: Byte;

                        Bshift: Byte;

                        Ashift: Byte;

                        RMask : Longword;

                        GMask : Longword;

                        BMask : Longword;

                        AMask : Longword;

                        colorkey: Longword;

                        alpha : Byte;

                        end;

     PSDL_Surface = ^TSDL_Surface;

     TSDL_Surface = record

                    flags : Longword;

                    format: PSDL_PixelFormat;

                    w, h  : Integer;

                    pitch : Word;

                    pixels: Pointer;

                    offset: Integer;

                    hwdata: Pointer;

                    clip_rect: TSDL_Rect;

                    unused1,

                    locked   : Longword;

                    Blitmap  : Pointer;

                    format_version: Longword;

                    refcount : Integer;

                    end;

     PSDL_Color = ^TSDL_Color;

     TSDL_Color = record

                  r: Byte;

                  g: Byte;

                  b: Byte;

                  a: Byte;

                  end;

     PSDL_RWops = ^TSDL_RWops;

     TSeek = function( context: PSDL_RWops; offset: Integer; whence: Integer ): Integer; cdecl;

     TRead = function( context: PSDL_RWops; Ptr: Pointer; size: Integer; maxnum : Integer ): Integer;  cdecl;

     TWrite = function( context: PSDL_RWops; Ptr: Pointer; size: Integer; num: Integer ): Integer; cdecl;

     TClose = function( context: PSDL_RWops ): Integer; cdecl;

     TStdio = record

              autoclose: Integer;

              fp: pointer;

              end;

     TMem = record

            base: PByte;

            here: PByte;

            stop: PByte;

            end;

     TUnknown = record

                data1: Pointer;

                end;

     TSDL_RWops = record

                  seek: TSeek;

                  read: TRead;

                  write: TWrite;

                  close: TClose;

                  type_: Longword;

                  case Byte of

                       0: (stdio: TStdio);

                       1: (mem: TMem);

                       2: (unknown: TUnknown);

                       end;

     TSDL_KeySym = record

                   scancode: Byte;

                   sym,

                   modifier: Longword;

                   unicode: Word;

                   end;

     TSDL_KeyboardEvent = record

                          type_: Byte;

                          which: Byte;

                          state: Byte;

                          keysym: TSDL_KeySym;

                          end;

     TSDL_QuitEvent = record

                      type_: Byte;

                      end;

     PSDL_Event = ^TSDL_Event;

     TSDL_Event = record

                  case Byte of

                       SDL_NOEVENT: (type_: byte);

                       SDL_KEYDOWN, SDL_KEYUP: (key: TSDL_KeyboardEvent);

                       SDL_QUITEV: (quit: TSDL_QuitEvent);

                       end;

     PByteArray = ^TByteArray;

     TByteArray = array[0..32767] of Byte;

     PSDL_Thread = Pointer;

function  SDL_Init(flags: Longword): Integer; cdecl; external SDLLibName;

procedure SDL_Quit; cdecl; external SDLLibName;

procedure SDL_Delay(msec: Longword); cdecl; external SDLLibName;

function  SDL_GetTicks: Longword; cdecl; external SDLLibName;

function  SDL_MustLock(Surface: PSDL_Surface): Boolean;

function  SDL_LockSurface(Surface: PSDL_Surface): Integer; cdecl; external SDLLibName;

procedure SDL_UnlockSurface(Surface: PSDL_Surface); cdecl; external SDLLibName;

function  SDL_GetError: PChar; cdecl; external SDLLibName;

function  SDL_SetVideoMode(width, height, bpp: Integer; flags: Longword): PSDL_Surface; cdecl; external SDLLibName;

function  SDL_CreateRGBSurface(flags: Longword; Width, Height, Depth: Integer; RMask, GMask, BMask, AMask: Longword): PSDL_Surface; cdecl; external SDLLibName;

function  SDL_CreateRGBSurfaceFrom(pixels: Pointer; width, height, depth, pitch: Integer; RMask, GMask, BMask, AMask: Longword): PSDL_Surface; cdecl; external SDLLibName;

procedure SDL_FreeSurface(Surface: PSDL_Surface); cdecl; external SDLLibName;

function  SDL_SetColorKey(surface: PSDL_Surface; flag, key: Longword): Integer; cdecl; external SDLLibName;

function  SDL_UpperBlit(src: PSDL_Surface; srcrect: PSDL_Rect; dst: PSDL_Surface; dstrect: PSDL_Rect): Integer; cdecl; external SDLLibName;

function  SDL_FillRect(dst: PSDL_Surface; dstrect: PSDL_Rect; color: Longword): Integer; cdecl; external SDLLibName;

procedure SDL_UpdateRect(Screen: PSDL_Surface; x, y: Integer; w, h: Longword); cdecl; external SDLLibName;

function  SDL_Flip(Screen: PSDL_Surface): Integer; cdecl; external SDLLibName;

procedure SDL_GetRGB(pixel: Longword; fmt: PSDL_PixelFormat; r, g, b: PByte); cdecl; external SDLLibName;

function  SDL_MapRGB(format: PSDL_PixelFormat; r, g, b: Byte): Integer; cdecl; external SDLLibName;

function  SDL_DisplayFormat(Surface: PSDL_Surface): PSDL_Surface; cdecl; external SDLLibName;

function  SDL_DisplayFormatAlpha(Surface: PSDL_Surface): PSDL_Surface; cdecl; external SDLLibName;

function  SDL_RWFromFile(filename, mode: PChar): PSDL_RWops; cdecl; external SDLLibName;

function  SDL_SaveBMP_RW(surface: PSDL_Surface; dst: PSDL_RWops; freedst: Integer): Integer; cdecl; external SDLLibName;

function  SDL_GetKeyState(numkeys: PInteger): PByteArray; cdecl; external SDLLibName;

function  SDL_GetMouseState(x, y: PInteger): Byte; cdecl; external SDLLibName;

function  SDL_GetKeyName(key: Longword): PChar; cdecl; external SDLLibName;

procedure SDL_WarpMouse(x, y: Word); cdecl; external SDLLibName;

function  SDL_PollEvent(event: PSDL_Event): Integer; cdecl; external SDLLibName;

function  SDL_ShowCursor(toggle: Integer): Integer; cdecl; external SDLLibName;

procedure SDL_WM_SetCaption(title: PChar; icon: PChar); cdecl; external SDLLibName;

function  SDL_CreateThread(fn: pointer; data: pointer): PSDL_Thread; cdecl; external SDLLibName;

procedure SDL_WaitThread(thread: PSDL_Thread; status: PInteger); cdecl; external SDLLibName;

(*  TTF  *)

const {$IFDEF WIN32}

      SDL_TTFLibName = 'SDL_ttf.dll';

      {$ENDIF}

      {$IFDEF UNIX}

      SDL_TTFLibName = 'libSDL_ttf.so';

      {$ENDIF}

type PTTF_Font = ^TTTF_font;

     TTTF_Font = record

                 end;

function TTF_Init: integer; cdecl; external SDL_TTFLibName;

procedure TTF_Quit; cdecl; external SDL_TTFLibName;

function TTF_OpenFont(const filename: Pchar; size: integer): PTTF_Font; cdecl; external SDL_TTFLibName;

(*  SDL_mixer *)

const {$IFDEF WIN32}

      SDL_MixerLibName = 'SDL_mixer.dll';

      {$ENDIF}

      {$IFDEF UNIX}

      SDL_MixerLibName = 'libSDL_mixer.so';

      {$ENDIF}

type PMixChunk = ^TMixChunk;

     TMixChunk = record

                 allocated: Longword;

                 abuf     : PByte;

                 alen     : Longword;

                 volume   : PByte;

                  end;

     TMusic = (MUS_CMD, MUS_WAV, MUS_MOD, MUS_MID, MUS_OGG, MUS_MP3);

     TMix_Fading = (MIX_NO_FADING, MIX_FADING_OUT, MIX_FADING_IN);

     TMidiSong = record

               samples : Integer;

               events  : pointer;

               end;

     TMusicUnion = record

        case Byte of

             0: ( midi : TMidiSong );

             1: ( ogg  : pointer);

             end;

     PMixMusic = ^TMixMusic;

     TMixMusic = record

                 type_  : TMusic;

                 data   : TMusicUnion;

                 fading : TMix_Fading;

                 fade_volume,

                 fade_step,

                 fade_steps,

                 error  : integer;

                 end;

function  Mix_OpenAudio(frequency: integer; format: Word; channels: integer; chunksize: integer): integer; cdecl; external SDL_MixerLibName;

procedure Mix_CloseAudio; cdecl; external SDL_MixerLibName;

function  Mix_VolumeMusic(volume: integer): integer; cdecl; external SDL_MixerLibName;

function Mix_AllocateChannels(numchans: integer): integer; cdecl; external SDL_MixerLibName;

procedure Mix_FreeChunk(chunk: PMixChunk); cdecl; external SDL_MixerLibName;

procedure Mix_FreeMusic(music: PMixMusic); cdecl; external SDL_MixerLibName;

function  Mix_LoadWAV_RW(src: PSDL_RWops; freesrc: integer): PMixChunk; cdecl; external SDL_MixerLibName;

function  Mix_LoadMUS(const filename: PChar): PMixMusic; cdecl; external SDL_MixerLibName;

function  Mix_Playing(channel: integer): integer; cdecl; external SDL_MixerLibName;

function  Mix_PlayingMusic: integer; cdecl; external SDL_MixerLibName;

function  Mix_PlayChannelTimed(channel: integer; chunk: PMixChunk; loops: integer; ticks: integer): integer; cdecl; external SDL_MixerLibName;

function  Mix_PlayMusic(music: PMixMusic; loops: integer): integer; cdecl; external SDL_MixerLibName;

function  Mix_HaltChannel(channel: integer): integer; cdecl; external SDL_MixerLibName;

(*  SDL_image *)

const {$IFDEF WIN32}

      SDL_ImageLibName = 'SDL_image.dll';

      {$ENDIF}

      {$IFDEF UNIX}

      SDL_ImageLibName = 'libSDL_image.so';

      {$ENDIF}

function IMG_Load(const _file: PChar): PSDL_Surface; cdecl; external SDL_ImageLibName;

(*  SDL_net *)

const {$IFDEF WIN32}

      SDL_NetLibName = 'SDL_net.dll';

      {$ENDIF}

      {$IFDEF UNIX}

      SDL_NetLibName = 'libSDL_net.so';

      {$ENDIF}

type TIPAddress = record

                  host: Longword;

                  port: Word;

                  end;

     PTCPSocket = ^TTCPSocket;

     TTCPSocket = record

                  ready,

                  channel: integer;

                  remoteAddress,

                  localAddress: TIPaddress;

                  sflag: integer;

                  end;

     PSDLNet_SocketSet = ^TSDLNet_SocketSet;

     TSDLNet_SocketSet = record

                         numsockets,

                         maxsockets: integer;

                         sockets: PTCPSocket;

                         end;

function SDLNet_Init: integer; cdecl; external SDL_NetLibName;

procedure SDLNet_Quit; cdecl; external SDL_NetLibName;

function SDLNet_AllocSocketSet(maxsockets: integer): PSDLNet_SocketSet; cdecl; external SDL_NetLibName;

function SDLNet_ResolveHost(var address: TIPaddress; host: PCHar; port: Word): integer; cdecl; external SDL_NetLibName;

function SDLNet_TCP_Accept(server: PTCPsocket): PTCPSocket; cdecl; external SDL_NetLibName;

function SDLNet_TCP_Open(var ip: TIPaddress): PTCPSocket; cdecl; external SDL_NetLibName;

function SDLNet_TCP_Send(sock: PTCPsocket; data: Pointer; len: integer): integer; cdecl; external SDL_NetLibName;

function SDLNet_TCP_Recv(sock: PTCPsocket; data: Pointer; len: integer): integer; cdecl; external SDL_NetLibName;

procedure SDLNet_TCP_Close(sock: PTCPsocket); cdecl; external SDL_NetLibName;

procedure SDLNet_FreeSocketSet(_set: PSDLNet_SocketSet); cdecl; external SDL_NetLibName;

function SDLNet_AddSocket(_set: PSDLNet_SocketSet; sock: PTCPSocket): integer; cdecl; external SDL_NetLibName;

function SDLNet_CheckSockets(_set: PSDLNet_SocketSet; timeout: integer): integer; cdecl; external SDL_NetLibName;

implementation

function SDL_MustLock(Surface: PSDL_Surface): Boolean;

begin

Result:= ( surface^.offset <> 0 )

       or(( surface^.flags and (SDL_HWSURFACE or SDL_ASYNCBLIT or SDL_RLEACCEL)) <> 0)

end;

end.