(*

* 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 uMisc;

interface

uses    SDLh, uConsts, GLunit, uTypes;

procedure movecursor(dx, dy: LongInt);

function  doSurfaceConversion(tmpsurf: PSDL_Surface): PSDL_Surface;

procedure OutError(Msg: shortstring; isFatalError: boolean);

procedure TryDo(Assert: boolean; Msg: shortstring; isFatal: boolean); inline;

procedure SDLTry(Assert: boolean; isFatal: boolean);

procedure MakeScreenshot(filename: shortstring);

procedure initModule;

procedure freeModule;

implementation

procedure movecursor(dx, dy: LongInt);

var x, y: LongInt;

begin

if (dx = 0) and (dy = 0) then exit;

SDL_GetMouseState(@x, @y);

Inc(x, dx);

Inc(y, dy);

SDL_WarpMouse(x, y);

end;

procedure OutError(Msg: shortstring; isFatalError: boolean);

begin

// obsolete? written in WriteLnToConsole() anyway

// {$IFDEF DEBUGFILE}AddFileLog(Msg);{$ENDIF}

WriteLnToConsole(Msg);

if isFatalError then

    begin

    SendIPC('E' + GetLastConsoleLine);

    SDL_Quit;

    halt(1)

    end

end;

procedure TryDo(Assert: boolean; Msg: shortstring; isFatal: boolean);

begin

if not Assert then OutError(Msg, isFatal)

end;

procedure SDLTry(Assert: boolean; isFatal: boolean);

begin

if not Assert then OutError(SDL_GetError, isFatal)

end;

procedure MakeScreenshot(filename: shortstring);

var p: Pointer;

    size: Longword;

    f: file;

    // Windows Bitmap Header

    head: array[0..53] of Byte = (

    $42, $4D, // identifier ("BM")

    0, 0, 0, 0, // file size

    0, 0, 0, 0, // reserved

    54, 0, 0, 0, // starting offset

    40, 0, 0, 0, // header size

    0, 0, 0, 0, // width

    0, 0, 0, 0, // height

    1, 0, // color planes

    24, 0, // bit depth

    0, 0, 0, 0, // compression method (uncompressed)

    0, 0, 0, 0, // image size

    96, 0, 0, 0, // horizontal resolution

    96, 0, 0, 0, // vertical resolution

    0, 0, 0, 0, // number of colors (all)

    0, 0, 0, 0 // number of important colors

    );

begin

// flash

ScreenFade:= sfFromWhite;

ScreenFadeValue:= sfMax;

ScreenFadeSpeed:= 5;

size:= cScreenWidth * cScreenHeight * 3;

p:= GetMem(size);

// update header information and file name

filename:= ParamStr(1) + '/Screenshots/' + filename + '.bmp';

head[$02]:= (size + 54) and $ff;

head[$03]:= ((size + 54) shr 8) and $ff;

head[$04]:= ((size + 54) shr 16) and $ff;

head[$05]:= ((size + 54) shr 24) and $ff;

head[$12]:= cScreenWidth and $ff;

head[$13]:= (cScreenWidth shr 8) and $ff;

head[$14]:= (cScreenWidth shr 16) and $ff;

head[$15]:= (cScreenWidth shr 24) and $ff;

head[$16]:= cScreenHeight and $ff;

head[$17]:= (cScreenHeight shr 8) and $ff;

head[$18]:= (cScreenHeight shr 16) and $ff;

head[$19]:= (cScreenHeight shr 24) and $ff;

head[$22]:= size and $ff;

head[$23]:= (size shr 8) and $ff;

head[$24]:= (size shr 16) and $ff;

head[$25]:= (size shr 24) and $ff;

//remember that opengles operates on a single surface, so GL_FRONT *should* be implied

//glReadBuffer(GL_FRONT);

glReadPixels(0, 0, cScreenWidth, cScreenHeight, GL_BGR, GL_UNSIGNED_BYTE, p);

{$I-}

Assign(f, filename);

Rewrite(f, 1);

if IOResult = 0 then

    begin

    BlockWrite(f, head, sizeof(head));

    BlockWrite(f, p^, size);

    Close(f);

    end;

{$I+}

FreeMem(p)

end;

function doSurfaceConversion(tmpsurf: PSDL_Surface): PSDL_Surface;

{* for more information http://www.idevgames.com/forum/showpost.php?p=85864&postcount=7 *}

var convertedSurf: PSDL_Surface = nil;

begin

    if (tmpsurf^.format^.bitsperpixel = 24) or ((tmpsurf^.format^.bitsperpixel = 32) and (tmpsurf^.format^.rshift > tmpsurf^.format^.bshift)) then

    begin

        convertedSurf:= SDL_ConvertSurface(tmpsurf, @conversionFormat, SDL_SWSURFACE);

        SDL_FreeSurface(tmpsurf);

        exit(convertedSurf);

    end;

    exit(tmpsurf);

end;

procedure initModule;

begin

end;

procedure freeModule;

begin

    recordFileName:= '';

end;

end.