(*

 * 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

 *)

unit SDLh;

interface

{$IFDEF LINUX or FREEBSD}

{$DEFINE UNIX}

{$ENDIF}

{$IFDEF UNIX}

  {$IFNDEF DARWIN}

    {$linklib c}

  {$ENDIF}

  {$linklib pthread}

{$ENDIF}

{$PACKRECORDS C}

{$IFDEF DARWIN}

	{$PASCALMAINNAME SDL_main}

{$IFNDEF IPHONEOS}

	{$linkframework Cocoa}

	{$linkframework SDL}

	{$linkframework SDL_net}

	{$linkframework SDL_image}

	{$linkframework SDL_ttf}

	{$linkframework SDL_mixer}

	{$linklib SDLmain}

	{$linklib gcc}

{$ENDIF}

{$ENDIF}

(*  SDL  *)

const

{$IFDEF WIN32}

        SDLLibName = 'SDL.dll';

{$ENDIF}

{$IFDEF UNIX}

	{$IFDEF DARWIN}

                SDLLibName = 'SDL';

        {$ELSE}

		SDLLibName = 'libSDL.so';

        {$ENDIF}

{$ENDIF}

	SDL_SWSURFACE   = $00000000;

	SDL_HWSURFACE   = $00000001;

	SDL_SRCALPHA    = $00010000;

	SDL_INIT_VIDEO  = $00000020;

	SDL_INIT_AUDIO  = $00000010;

	SDL_INIT_JOYSTICK = $00000200;

	SDL_APPINPUTFOCUS=$00000002;

{$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}

{*begin sdl_event binding*}

	SDL_NOEVENT     = 0;

	SDL_KEYDOWN     = 2;

	SDL_KEYUP       = 3;

	//SDL_QUITEV      = 12;

	SDL_VIDEORESIZE = 16; // TODO: outdated?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

{$IFDEF SDL13}

        SDL_WINDOWEVENT = 1;

        SDL_TEXTINPUT = 4;

	SDL_MOUSEMOTION  = 5;

        SDL_MOUSEBUTTONDOWN = 6;

	SDL_MOUSEBUTTONUP   = 7;

        SDL_MOUSEWHEEL = 8;  //different handling, should create SDL_MouseWheelEvent type

	SDL_JOYAXIS = 10;

	SDL_JOYHAT = 12;

	SDL_JOYBUTTONDOWN = 13;

	SDL_JOYBUTTONUP = 14;

	SDL_QUITEV      = 15;

{$ELSE}

        SDL_ACTIVEEVENT = 1;

       	SDL_MOUSEBUTTONDOWN = 5;

	SDL_MOUSEBUTTONUP   = 6;

        SDL_BUTTON_WHEELDUP = 4;

	SDL_BUTTON_WHEELDOWN = 5;

	SDL_JOYAXIS = 7;

	SDL_JOYHAT = 9;

	SDL_JOYBUTTONDOWN = 10;

	SDL_JOYBUTTONUP = 11;

	SDL_QUITEV      = 12;

{$ENDIF}

{*end sdl_event binding*}

	RMask = $000000FF;

	GMask = $0000FF00;

	BMask = $00FF0000;

	AMask = $FF000000;

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;

	TSDL_ActiveEvent = record

		type_: byte;

		gain: byte;

		state: byte;

		end;

	TSDL_KeyboardEvent = record

		type_: Byte;

		which: Byte;

		state: Byte;

		keysym: TSDL_KeySym;

		end;

	TSDL_MouseButtonEvent = record

		_type,

		which,

		button,

		state: byte;

		x, y: word;

		end;

	TSDL_GLattr = (

		SDL_GL_RED_SIZE,

		SDL_GL_GREEN_SIZE,

		SDL_GL_BLUE_SIZE,

		SDL_GL_ALPHA_SIZE,

		SDL_GL_BUFFER_SIZE,

		SDL_GL_DOUBLEBUFFER,

		SDL_GL_DEPTH_SIZE,

		SDL_GL_STENCIL_SIZE,

		SDL_GL_ACCUM_RED_SIZE,

		SDL_GL_ACCUM_GREEN_SIZE,

		SDL_GL_ACCUM_BLUE_SIZE,

		SDL_GL_ACCUM_ALPHA_SIZE,

		SDL_GL_STEREO,

		SDL_GL_MULTISAMPLEBUFFERS,

		SDL_GL_MULTISAMPLESAMPLES,

		SDL_GL_ACCELERATED_VISUAL,

		SDL_GL_RETAINED_BACKING,

		SDL_GL_CONTEXT_MAJOR_VERSION,

		SDL_GL_CONTEXT_MINOR_VERSION

		);

{$IFDEF SDL13}

     TSDL_MouseMotionEvent = record

                             type_: byte;

                             which: byte;

                             state: byte;

                             x    : LongInt;

                             y    : LongInt;

                             xrel : LongInt;

                             yrel : LongInt;

                             end;

{$ENDIF}

     TSDL_QuitEvent = record

                      type_: Byte;

                      end;

     TSDL_ResizeEvent = record

			type_: Byte;

			w, h: LongInt;

			end;

     TSDL_JoyAxisEvent = record

			type_: Byte;

			which: Byte;

			axis: Byte;

			value: LongInt;

			end;

     TSDL_JoyHatEvent = record

			type_: Byte;

			which: Byte;

			hat: Byte;

			value: Byte;

			end;

     TSDL_JoyButtonEvent = record

			type_: Byte;

			which: Byte;

			button: Byte;

			state: Byte;

			end;

	 PSDL_Event = ^TSDL_Event;

     TSDL_Event = record

                  case Byte of

{$IFDEF SDL13}

                        //doublecheck the type of WINDOWEVENT TEXTINPUT

                        SDL_NOEVENT: (type_: byte);

                        SDL_WINDOWEVENT: (active: TSDL_ActiveEvent);

                        SDL_KEYDOWN,

                        SDL_KEYUP: (key: TSDL_KeyboardEvent);

                        SDL_TEXTINPUT: (txtin: byte);

                        SDL_MOUSEMOTION: (motion: TSDL_MouseMotionEvent);

                        SDL_MOUSEBUTTONDOWN,

                        SDL_MOUSEBUTTONUP: (button: TSDL_MouseButtonEvent);

{$ELSE}

                       SDL_NOEVENT: (type_: byte);

                       SDL_ACTIVEEVENT: (active: TSDL_ActiveEvent);

                       SDL_KEYDOWN,

                       SDL_KEYUP: (key: TSDL_KeyboardEvent);

                       SDL_QUITEV: (quit: TSDL_QuitEvent);

                       SDL_VIDEORESIZE: (resize: TSDL_ResizeEvent);

                       SDL_MOUSEBUTTONDOWN,

                       SDL_MOUSEBUTTONUP: (button: TSDL_MouseButtonEvent);

{$ENDIF}

						SDL_JOYAXIS: (jaxis: TSDL_JoyAxisEvent);

						SDL_JOYHAT: (jhat: TSDL_JoyHatEvent);

						SDL_JOYBUTTONDOWN,

						SDL_JOYBUTTONUP: (jbutton: TSDL_JoyButtonEvent);

     end;

     PByteArray = ^TByteArray;

     TByteArray = array[0..65535] of Byte;

     PLongWordArray = ^TLongWordArray;

     TLongWordArray = array[0..16383] of LongWord;

     PSDL_Thread = Pointer;

     PSDL_mutex = Pointer;

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

procedure SDL_Quit; cdecl; external SDLLibName;

function  SDL_VideoDriverName(var namebuf; maxlen: LongInt): PChar; cdecl; external SDLLibName;

procedure SDL_EnableUNICODE(enable: LongInt); 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): LongInt; 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: LongInt; flags: Longword): PSDL_Surface; cdecl; external SDLLibName;

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

function  SDL_CreateRGBSurfaceFrom(pixels: Pointer; width, height, depth, pitch: LongInt; 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): LongInt; cdecl; external SDLLibName;

function  SDL_SetAlpha(surface: PSDL_Surface; flag, key: Longword): LongInt; cdecl; external SDLLibName;

function  SDL_ConvertSurface(src: PSDL_Surface; fmt: PSDL_PixelFormat; flags: LongInt): PSDL_Surface; cdecl; external SDLLibName;

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

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

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

function  SDL_Flip(Screen: PSDL_Surface): LongInt; 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): Longword; 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: LongInt): LongInt; cdecl; external SDLLibName;

{$IFDEF SDL13}

function  SDL_GetKeyboardState(numkeys: PLongInt): PByteArray; cdecl; external SDLLibName;

function  SDL_GetMouseState(index: LongInt; x, y: PLongInt): Byte; cdecl; external SDLLibName;

function  SDL_SelectMouse(index: LongInt): LongInt; cdecl; external SDLLibName;

function  SDL_GetRelativeMouseState(index: LongInt; x, y: PLongInt): Byte; cdecl; external SDLLibName;

function  SDL_GetNumMice : LongInt; cdecl; external SDLLibName;

{$ELSE}

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

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

{$ENDIF}

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

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

procedure SDL_PumpEvents; cdecl; external SDLLibName;

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

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

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

function  SDL_CreateMutex: PSDL_mutex; cdecl; external SDLLibName;

procedure SDL_DestroyMutex(mutex: PSDL_mutex); cdecl; external SDLLibName;

function  SDL_LockMutex(mutex: PSDL_mutex): LongInt; cdecl; external SDLLibName name 'SDL_mutexP';

function  SDL_UnlockMutex(mutex: PSDL_mutex): LongInt; cdecl; external SDLLibName name 'SDL_mutexV';

function  SDL_GL_SetAttribute(attr: TSDL_GLattr; value: LongInt): LongInt; cdecl; external SDLLibName;

procedure SDL_GL_SwapBuffers(); cdecl; external SDLLibName;

{$IFDEF SDL13}

{$IFDEF IPHONEOS}

function  SDL_iPhoneKeyboardShow(windowID: LongInt): LongInt; cdecl; external SDLLibName;

function  SDL_iPhoneKeyboardHide(windowID: LongInt): LongInt; cdecl; external SDLLibName;

function  SDL_iPhoneKeyboardIsShown(windowID: LongInt): boolean; cdecl; external SDLLibName;

function  SDL_iPhoneKeyboardToggle(windowID: LongInt): LongInt; cdecl; external SDLLibName;

{$ENDIF}

{$ENDIF}

// Joystick/Controller support

type PSDLJoystick = ^TSDLJoystick;

     TSDLJoystick = record

	                end;

function SDL_NumJoysticks: LongInt; cdecl; external SDLLibName;

function SDL_JoystickName(idx: LongInt): PChar; cdecl; external SDLLibName;

function SDL_JoystickOpen(idx: LongInt): PSDLJoystick; cdecl; external SDLLibName;

function SDL_JoystickOpened(idx: LongInt): LongInt; cdecl; external SDLLibName;

function SDL_JoystickIndex(joy: PSDLJoystick): LongInt; cdecl; external SDLLibName;

function SDL_JoystickNumAxes(joy: PSDLJoystick): LongInt; cdecl; external SDLLibName;

function SDL_JoystickNumBalls(joy: PSDLJoystick): LongInt; cdecl; external SDLLibName;

function SDL_JoystickNumHats(joy: PSDLJoystick): LongInt; cdecl; external SDLLibName;

function SDL_JoystickNumButtons(joy: PSDLJoystick): LongInt; cdecl; external SDLLibName;

procedure SDL_JoystickUpdate; cdecl; external SDLLibName;

function SDL_JoystickEventState(state: LongInt): LongInt; cdecl; external SDLLibName;

function SDL_JoystickGetAxis(joy: PSDLJoystick; axis: LongInt): Word; cdecl; external SDLLibName;

const 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;

function SDL_JoystickGetBall(joy: PSDLJoystick; ball: LongInt; dx: PInteger; dy: PInteger): Word; cdecl; external SDLLibName;

function SDL_JoystickGetHat(joy: PSDLJoystick; hat: LongInt): Byte; cdecl; external SDLLibName;

function SDL_JoystickGetButton(joy: PSDLJoystick; button: LongInt): Byte; cdecl; external SDLLibName;

procedure SDL_JoystickClose(joy: PSDLJoystick); cdecl; external SDLLibName;

(*  TTF  *)

const {$IFDEF WIN32}

      SDL_TTFLibName = 'SDL_ttf.dll';

      {$ENDIF}

      {$IFDEF UNIX}

	{$IFDEF DARWIN}

	  SDL_TTFLibName = 'SDL_ttf';

	{$ELSE}

          SDL_TTFLibName = 'libSDL_ttf.so';

        {$ENDIF}

      {$ENDIF}

      TTF_STYLE_NORMAL = 0;

      TTF_STYLE_BOLD   = 1;

      TTF_STYLE_ITALIC = 2;

type PTTF_Font = ^TTTF_font;

     TTTF_Font = record

                 end;

function TTF_Init: LongInt; cdecl; external SDL_TTFLibName;

procedure TTF_Quit; cdecl; external SDL_TTFLibName;

function TTF_SizeUTF8(font: PTTF_Font; const text: PChar; var w, h: LongInt): LongInt; cdecl; external SDL_TTFLibName;

(* TSDL_Color -> Longword conversion is workaround over freepascal bug.