(*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2008 Andrey Korotaev <unC0Rr@gmail.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; version 2 of the License

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 *)

{$INCLUDE "options.inc"}

unit SDLh;

interface

{$IFDEF LINUX}

  {$DEFINE UNIX}

{$ENDIF}

{$IFDEF FREEBSD}

  {$DEFINE UNIX}

{$ENDIF}

// UNIX is already defined in Darwin

{$IFDEF UNIX}

  {$IFNDEF DARWIN}

    {$linklib c}

  {$ENDIF}

  {$linklib pthread}

{$ENDIF}

{$IFDEF FPC}

  {$PACKRECORDS C}

{$ELSE}

  {$DEFINE cdecl attribute(cdecl)}

{$ENDIF}

{$IFDEF DARWIN}

  {$IFNDEF IPHONEOS}

    {$PASCALMAINNAME SDL_main}

    {$linkframework Cocoa}

    {$linkframework SDL}

    {$linkframework SDL_net}

    {$linkframework SDL_image}

    {$linkframework SDL_ttf}

    {$linkframework SDL_mixer}

  {$ENDIF}

{$ENDIF}

(*  SDL  *)

const

{$IFDEF WIN32}

    SDLLibName = 'SDL.dll';

    SDL_TTFLibName = 'SDL_ttf.dll';

    SDL_MixerLibName = 'SDL_mixer.dll';

    SDL_ImageLibName = 'SDL_image.dll';

    SDL_NetLibName = 'SDL_net.dll';

{$ELSE}

  {$IFDEF DARWIN}

    SDLLibName = 'SDL';

    SDL_TTFLibName = 'SDL_ttf';

    SDL_MixerLibName = 'SDL_mixer';

    SDL_ImageLibName = 'SDL_image';

    SDL_NetLibName = 'SDL_net';

  {$ELSE}

    SDLLibName = 'libSDL.so';

    SDL_TTFLibName = 'libSDL_ttf.so';

    SDL_MixerLibName = 'libSDL_mixer.so';

    SDL_ImageLibName = 'libSDL_image.so';

    SDL_NetLibName = 'libSDL_net.so';

  {$ENDIF}

{$ENDIF}

/////////////////////////////////////////////////////////////////

/////////////////////  CONSTANT DEFINITIONS /////////////////////

/////////////////////////////////////////////////////////////////

    SDL_SWSURFACE     = $00000000;

    SDL_HWSURFACE     = $00000001;

    SDL_SRCALPHA      = $00010000;

    SDL_INIT_TIMER    = $00000001;

    SDL_INIT_AUDIO    = $00000010;

    SDL_INIT_VIDEO    = $00000020;

    SDL_INIT_JOYSTICK = $00000200;

{$IFDEF SDL13}

    SDL_INIT_HAPTIC   = $00001000;

{$ELSE}

    SDL_INIT_CDROM    = $00000100;

{$ENDIF}

    SDL_INIT_NOPARACHUTE = $00100000;

    SDL_INIT_EVENTTHREAD = $01000000;

    SDL_INIT_EVERYTHING  = $0000FFFF;

    SDL_APPINPUTFOCUS    = 2;

    SDL_BUTTON_WHEELUP   = 4;

    SDL_BUTTON_WHEELDOWN = 5;

{*begin SDL_Event binding*}

{$IFDEF SDL13}

    SDL_FIRSTEVENT = 0;

    SDL_QUITEV = $100;

    SDL_WINDOWEVENT = $200;

    SDL_SYSWMEVENT = $201;

    SDL_KEYDOWN = $300;

    SDL_KEYUP = $301;

    SDL_TEXTEDITING = $302;

    SDL_TEXTINPUT = $303;

    SDL_MOUSEMOTION  = $400;

    SDL_MOUSEBUTTONDOWN = $401;

    SDL_MOUSEBUTTONUP = $402;

    SDL_MOUSEWHEEL = $403;

    SDL_PROXIMITYIN = $500;

    SDL_PROXIMITYOUT = $501;

    SDL_JOYAXISMOTION = $600;

    SDL_JOYBALLMOTION = $601;

    SDL_JOYHATMOTION = $602;

    SDL_JOYBUTTONDOWN = $603;

    SDL_JOYBUTTONUP = $604;

    SDL_USEREVENT = $8000;

    SDL_LASTEVENT = $FFFF;

{$ELSE}

    SDL_NOEVENT = 0;

    SDL_ACTIVEEVENT = 1;

    SDL_KEYDOWN = 2;

    SDL_KEYUP = 3;

    SDL_MOUSEMOTION  = 4;

    SDL_MOUSEBUTTONDOWN = 5;

    SDL_MOUSEBUTTONUP   = 6;

    SDL_JOYAXISMOTION = 7;

    SDL_JOYBALLMOTION = 8;

    SDL_JOYHATMOTION = 9;

    SDL_JOYBUTTONDOWN = 10;

    SDL_JOYBUTTONUP = 11;

    SDL_QUITEV = 12;

    SDL_VIDEORESIZE = 16; // TODO: outdated? no longer in SDL 1.3?

{$ENDIF}

{*end SDL_Event binding*}

{$IFDEF SDL13}

    SDL_ASYNCBLIT   = $08000000;

    SDL_ANYFORMAT   = $10000000;

    SDL_HWPALETTE   = $00200000;

    SDL_DOUBLEBUF   = $00400000;

    SDL_FULLSCREEN  = $00800000;

    SDL_HWACCEL     = $08000000;

    SDL_SRCCOLORKEY = $00020000;

    SDL_RLEACCEL    = $08000000;

    SDL_NOFRAME     = $02000000;

    SDL_OPENGL      = $04000000;

    SDL_RESIZABLE   = $01000000;

{$ELSE}

    SDL_ASYNCBLIT   = $00000004;

    SDL_ANYFORMAT   = $00100000;

    SDL_HWPALETTE   = $20000000;

    SDL_DOUBLEBUF   = $40000000;

    SDL_FULLSCREEN  = $80000000;

    SDL_HWACCEL     = $00000100;

    SDL_SRCCOLORKEY = $00001000;

    SDL_RLEACCEL    = $00004000;

    SDL_NOFRAME     = $00000020;

    SDL_OPENGL      = $00000002;

    SDL_RESIZABLE   = $00000010;

{$ENDIF}

{$IFDEF ENDIAN_LITTLE}

    RMask = $000000FF;

    GMask = $0000FF00;

    BMask = $00FF0000;

    AMask = $FF000000;

{$ELSE}

    RMask = $FF000000;

    GMask = $00FF0000;

    BMask = $0000FF00;

    AMask = $000000FF;

{$ENDIF}

{$IFDEF SDL13}

// SDL_WindowFlags (enum)

    SDL_WINDOW_FULLSCREEN = $00000001;         //*< fullscreen window, implies borderless */

    SDL_WINDOW_OPENGL = $00000002;             //*< window usable with OpenGL context */

    SDL_WINDOW_SHOWN = $00000004;              //*< window is visible */

    SDL_WINDOW_BORDERLESS = $00000008;         //*< no window decoration */

    SDL_WINDOW_RESIZABLE = $00000010;          //*< window can be resized */

    SDL_WINDOW_MINIMIZED = $00000020;          //*< window is minimized */

    SDL_WINDOW_MAXIMIZED = $00000040;          //*< window is maximized */

    SDL_WINDOW_INPUT_GRABBED = $00000100;      //*< window has grabbed input focus */

    SDL_WINDOW_INPUT_FOCUS = $00000200;        //*< window has input focus */

    SDL_WINDOW_MOUSE_FOCUS = $00000400;        //*< window has mouse focus */

    SDL_WINDOW_FOREIGN = $00000800;            //*< window not created by SDL */

{$ENDIF}

    {* SDL_mixer *}

    MIX_MAX_VOLUME = 128;

    MIX_INIT_FLAC = $00000001;

    MIX_INIT_MOD  = $00000002;

    MIX_INIT_MP3  = $00000004;

    MIX_INIT_OGG  = $00000008;

    {* SDL_TTF *}

    TTF_STYLE_NORMAL = 0;

    TTF_STYLE_BOLD   = 1;

    TTF_STYLE_ITALIC = 2;

    {* SDL Joystick *}

    SDL_HAT_CENTERED  = $00;

    SDL_HAT_UP        = $01;

    SDL_HAT_RIGHT     = $02;

    SDL_HAT_DOWN      = $04;

    SDL_HAT_LEFT      = $08;

    SDL_HAT_RIGHTUP   = SDL_HAT_RIGHT or SDL_HAT_UP;

    SDL_HAT_RIGHTDOWN = SDL_HAT_RIGHT or SDL_HAT_DOWN;

    SDL_HAT_LEFTUP    = SDL_HAT_LEFT or SDL_HAT_UP;

    SDL_HAT_LEFTDOWN  = SDL_HAT_LEFT or SDL_HAT_DOWN;

    {* SDL_image *}

    IMG_INIT_JPG = $00000001;

    IMG_INIT_PNG = $00000002;

    IMG_INIT_TIF = $00000004;

/////////////////////////////////////////////////////////////////

///////////////////////  TYPE DEFINITIONS ///////////////////////

/////////////////////////////////////////////////////////////////

type 

    PSDL_Rect = ^TSDL_Rect;

    TSDL_Rect = record

{$IFDEF SDL13}

        x, y, w, h: LongInt;

{$ELSE}

        x, y: SmallInt;

        w, h: Word;

{$ENDIF}

        end;

    TPoint = record

        X: LongInt;

        Y: LongInt;

        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  : LongInt;

        pitch : Word;

        pixels: Pointer;

        offset: LongInt;

        end;

    PSDL_Color = ^TSDL_Color;

    TSDL_Color = record

        case byte of

            0: (    r: Byte;

                g: Byte;

                b: Byte;

                unused: Byte;

               );

            1: (    value: Longword);

        end;

    PSDL_RWops = ^TSDL_RWops;

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

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

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

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

    TStdio = record

        autoclose: LongInt;

        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: Longword;

        modifier: Longword;

        unicode: Word;

        end;

{* SDL_Event type definition *}

{$IFDEF SDL13}

    PSDL_Window = pointer;  

    PSDL_Texture = pointer;

    TSDL_WindowEvent = record

        type_: LongInt;

        windowID: LongInt;

        event: byte;

        padding1, padding2, padding3: byte;

        data1, data2: LongInt;

        end;

// implement SDL_TextEditingEvent + SDL_TextInputEvent for sdl13

{$ELSE}

    // these two are present in sdl1.3 but only for backward compatibility

    // and in 1.3 type_ is LongInt, not byte

    TSDL_ActiveEvent = record

        type_: byte;

        gain: byte;

        state: byte;

        end;

    TSDL_ResizeEvent = record

        type_: Byte;

        w, h: LongInt;

        end;

{$ENDIF}

    TSDL_MouseMotionEvent = record

        which: byte;

        state: byte;

{$IFDEF SDL13}

        type_: LongInt;

        windowID: LongInt;

        padding1, padding2: byte;

        x, y, z, xrel, yrel : LongInt;

        pressure, pressure_max, pressure_min,

        rotation, tilt, cursor: LongInt; 

{$ELSE}

        type_: byte;

        x, y, xrel, yrel : word;

{$ENDIF}

        end;

    TSDL_KeyboardEvent = record

{$IFDEF SDL13}

        type_: LongInt;

        windowID: LongInt;

        padding1, padding2: byte;

{$ELSE}

        type_: byte;

{$ENDIF}

        which: byte;

        state: byte;

        keysym: TSDL_KeySym;

        end;

    TSDL_MouseButtonEvent = record

        which,

        button,

        state: byte;

{$IFDEF SDL13}

        _type: LongInt;

        windowID: LongInt;

        x, y: LongInt;

        padding1: byte;

{$ELSE}

        _type: byte;

        x, y: word;

{$ENDIF}

        end;

{$IFDEF SDL13}

    TSDL_MouseWheelEvent = record

        type_: LongInt;

        windowID: LongInt;

        which: Byte;

        x, y: LongInt;

        padding1, padding2, padding3: byte;

        end;

    // implement SDL_ProximityEvent

{$ENDIF}

    TSDL_JoyAxisEvent = record

        type_: Byte;

        which: Byte;

        axis: Byte;

{$IFDEF SDL13}

        value: LongInt;

{$ELSE}

        value: word;

{$ENDIF}    

        end;

    TSDL_JoyBallEvent = record

        which: Byte;

        ball: Byte;

{$IFDEF SDL13}

        type_: LongInt;

        xrel, yrel: LongInt;

{$ELSE}

        type_: Byte;

        xrel, yrel: word;

{$ENDIF}

        end;

    TSDL_JoyHatEvent = record

{$IFDEF SDL13}

        type_: LongInt;

{$ELSE}

        type_: Byte;

{$ENDIF}

        which: Byte;

        hat: Byte;

        value: Byte;

        end;

    TSDL_JoyButtonEvent = record

{$IFDEF SDL13}

        type_: LongInt;

{$ELSE}

        type_: Byte;

{$ENDIF}

        which: Byte;

        button: Byte;

        state: Byte;

        end;

    TSDL_QuitEvent = record

{$IFDEF SDL13}

        type_: LongInt;

{$ELSE}

        type_: Byte;

{$ENDIF}

        end;

    PSDL_Event = ^TSDL_Event;

    TSDL_Event = record

        case Byte of

{$IFDEF SDL13}

            SDL_FIRSTEVENT: (type_: byte);

            SDL_QUITEV: (quit: TSDL_QuitEvent);

            SDL_WINDOWEVENT: (active: TSDL_WindowEvent);

            SDL_KEYDOWN,