(*

 * Hedgewars, a worms-like game

 * Copyright (c) 2004, 2005, 2006 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 uConsole;

interface

uses SDLh;

{$INCLUDE options.inc}

const isDeveloperMode: boolean = true;

type TVariableType = (vtCommand, vtInteger, vtDouble, vtBoolean);

     TCommandHandler = procedure (var params: shortstring);

procedure DrawConsole(Surface: PSDL_Surface);

procedure WriteToConsole(s: shortstring);

procedure WriteLnToConsole(s: shortstring);

procedure KeyPressConsole(Key: Longword);

procedure ParseCommand(CmdStr: shortstring; const TrustedSource: boolean = true);

function  GetLastConsoleLine: shortstring;

implementation

{$J+}

const cLineWidth: integer = 0;

      cLinesCount = 256;

type  PVariable = ^TVariable;

      TVariable = record

                     Next: PVariable;

                     Name: string[15];

                    VType: TVariableType;

                  Handler: pointer;

                  Trusted: boolean;

                  end;

var   ConsoleLines: array[byte] of ShortString;

      CurrLine: integer = 0;

      InputStr: shortstring;

      Variables: PVariable = nil;

function RegisterVariable(Name: string; VType: TVariableType; p: pointer; Trusted: boolean): PVariable;

begin

New(Result);

TryDo(Result <> nil, 'RegisterVariable: Result = nil', true);

FillChar(Result^, sizeof(TVariable), 0);

Result.Name:= Name;

Result.VType:= VType;

Result.Handler:= p;

Result.Trusted:= Trusted;

if Variables = nil then Variables:= Result

                   else begin

                        Result.Next:= Variables;

                        Variables:= Result

                        end

end;

procedure FreeVariablesList;

var t, tt: PVariable;

begin

tt:= Variables;

Variables:= nil;

while tt<>nil do

      begin

      t:= tt;

      tt:= tt.Next;

      Dispose(t)

      end;

end;

procedure SplitBySpace(var a, b: shortstring);

var i, t: integer;

begin

i:= Pos(' ', a);

if i>0 then

   begin

   for t:= 1 to Pred(i) do

       if (a[t] >= 'A')and(a[t] <= 'Z') then Inc(a[t], 32);

   b:= copy(a, i + 1, Length(a) - i);

   while (b[0]<>#0) and (b[1]=#32) do Delete(b, 1, 1);

   byte(a[0]):= Pred(i)

   end else b:= '';

end;

procedure DrawConsole(Surface: PSDL_Surface);

var x, y: integer;

    r: TSDL_Rect;

begin

with r do

     begin

     x:= 0;

     y:= cConsoleHeight;

     w:= cScreenWidth;

     h:= 4;

     end;

SDL_FillRect(Surface, @r, cConsoleSplitterColor);

for y:= 0 to cConsoleHeight div 256 + 1 do

    for x:= 0 to cScreenWidth div 256 + 1 do

        DrawGear(sConsoleBG, x * 256, cConsoleHeight - 256 - y * 256, Surface);

for y:= 0 to cConsoleHeight div Fontz[fnt16].Height do

    DXOutText(4, cConsoleHeight - (y + 2) * (Fontz[fnt16].Height + 2), fnt16, ConsoleLines[(CurrLine - 1 - y + cLinesCount) mod cLinesCount], Surface);

DXOutText(4, cConsoleHeight - Fontz[fnt16].Height - 2, fnt16, '> '+InputStr, Surface);

end;

procedure WriteToConsole(s: shortstring);

var Len: integer;

begin

{$IFDEF DEBUGFILE}AddFileLog('Console write: ' + s);{$ENDIF}

Write(s);

repeat

Len:= cLineWidth - Length(ConsoleLines[CurrLine]);

ConsoleLines[CurrLine]:= ConsoleLines[CurrLine] + copy(s, 1, Len);

Delete(s, 1, Len);

if byte(ConsoleLines[CurrLine][0])=cLineWidth then

   begin

   inc(CurrLine);

   if CurrLine = cLinesCount then CurrLine:= 0;

   PLongWord(@ConsoleLines[CurrLine])^:= 0

   end;

until Length(s) = 0

end;

procedure WriteLnToConsole(s: shortstring);

begin

WriteToConsole(s);

WriteLn;

inc(CurrLine);

if CurrLine = cLinesCount then CurrLine:= 0;

PLongWord(@ConsoleLines[CurrLine])^:= 0

end;

procedure InitConsole;

var i: integer;

begin

cLineWidth:= cScreenWidth div 10;

if cLineWidth > 255 then cLineWidth:= 255;

for i:= 0 to Pred(cLinesCount) do PLongWord(@ConsoleLines[i])^:= 0

end;

procedure ParseCommand(CmdStr: shortstring; const TrustedSource: boolean = true);

type PDouble = ^Double;

var i, ii: integer;

    s: shortstring;

    t: PVariable;

    c: char;

begin

//WriteLnToConsole(CmdStr);

if CmdStr[0]=#0 then exit;

{$IFDEF DEBUGFILE}AddFileLog('ParseCommand "' + CmdStr + '"');{$ENDIF}

c:= CmdStr[1];

if c in ['/', '$'] then Delete(CmdStr, 1, 1) else c:= '/';

SplitBySpace(CmdStr, s);

t:= Variables;

while t <> nil do

      begin

      if t.Name = CmdStr then

         begin

         if TrustedSource or t.Trusted then

            case t.VType of

              vtCommand: if c='/' then

                         begin

                         TCommandHandler(t.Handler)(s);

                         end;

              vtInteger: if c='$' then

                         if s[0]=#0 then

                            begin

                            str(PInteger(t.Handler)^, s);

                            WriteLnToConsole('$' + CmdStr + ' is "' + s + '"');

                            end else val(s, PInteger(t.Handler)^, i);

                 vtDouble: if c='$' then

                         if s[0]=#0 then

                            begin

                            str(PDouble(t.Handler)^:4:6, s);

                            WriteLnToConsole('$' + CmdStr + ' is "' + s + '"');

                            end else val(s, PDouble(t.Handler)^   , i);

             vtBoolean: if c='$' then

                         if s[0]=#0 then

                            begin

                            str(ord(boolean(t.Handler^)), s);

                            WriteLnToConsole('$' + CmdStr + ' is "' + s + '"');

                            end else

                            begin

                            val(s, ii, i);

                            boolean(t.Handler^):= not (ii = 0)

                            end;

              end;

         exit

         end else t:= t.Next

      end;

case c of

     '$': WriteLnToConsole(errmsgUnknownVariable + ': "$' + CmdStr + '"')

     else WriteLnToConsole(errmsgUnknownCommand  + ': "/' + CmdStr + '"') end

end;

procedure AutoComplete;

var t: PVariable;

    c: char;

begin

if InputStr[0] = #0 then exit;

c:= InputStr[1];

if c in ['/', '$'] then Delete(InputStr, 1, 1)

                   else c:= #0;

if InputStr[byte(InputStr[0])] = #32 then dec(InputStr[0]);

t:= Variables;

while t <> nil do

      begin

      if (c=#0) or ((t.VType =  vtCommand) and (c='/'))or

                   ((t.VType <> vtCommand) and (c='$'))then

         if copy(t.Name, 1, Length(InputStr)) = InputStr then

            begin

            if t.VType = vtCommand then InputStr:= '/' + t.Name + ' '

                                   else InputStr:= '$' + t.Name + ' ';

            exit

            end;

      t:= t.Next

      end

end;

procedure KeyPressConsole(Key: Longword);

begin

case Key of

      8: if Length(InputStr)>0 then dec(InputStr[0]);

      9: AutoComplete;

 13,271: begin

         if InputStr[1] in ['/', '$'] then

            ParseCommand(InputStr, false)

         else

            ParseCommand('/say ' + InputStr, false);

         InputStr:= ''

         end;

     96: begin

         GameState:= gsGame;

         cConsoleYAdd:= 0;

         ResetKbd

         end;

     else InputStr:= InputStr + char(Key)

     end

end;

function GetLastConsoleLine: shortstring;

begin

if CurrLine = 0 then Result:= ConsoleLines[Pred(cLinesCount)]

                else Result:= ConsoleLines[Pred(CurrLine)]

end;

{$INCLUDE CCHandlers.inc}

initialization

InitConsole;

RegisterVariable('quit'    , vtCommand, @chQuit         , true );

RegisterVariable('capture' , vtCommand, @chCapture      , true );

RegisterVariable('addteam' , vtCommand, @chAddTeam      , false);

RegisterVariable('rdriven' , vtCommand, @chTeamLocal    , false);

RegisterVariable('map'     , vtCommand, @chSetMap       , false);

RegisterVariable('theme'   , vtCommand, @chSetTheme     , false);

RegisterVariable('seed'    , vtCommand, @chSetSeed      , false);

RegisterVariable('c_height', vtInteger, @cConsoleHeight , false);

RegisterVariable('gmflags' , vtInteger, @GameFlags      , false);

RegisterVariable('turntime', vtInteger, @cHedgehogTurnTime, false);

RegisterVariable('name'    , vtCommand, @chName         , false);

RegisterVariable('fort'    , vtCommand, @chFort         , false);

RegisterVariable('grave'   , vtCommand, @chGrave        , false);

RegisterVariable('bind'    , vtCommand, @chBind         , true );

RegisterVariable('add'     , vtCommand, @chAdd          , false);

RegisterVariable('skip'    , vtCommand, @chSkip         , false);

RegisterVariable('say'     , vtCommand, @chSay          , true );

RegisterVariable('ammomenu', vtCommand, @chAmmoMenu     , false);

RegisterVariable('+left'   , vtCommand, @chLeft_p       , false);

RegisterVariable('-left'   , vtCommand, @chLeft_m       , false);

RegisterVariable('+right'  , vtCommand, @chRight_p      , false);

RegisterVariable('-right'  , vtCommand, @chRight_m      , false);

RegisterVariable('+up'     , vtCommand, @chUp_p         , false);

RegisterVariable('-up'     , vtCommand, @chUp_m         , false);

RegisterVariable('+down'   , vtCommand, @chDown_p       , false);

RegisterVariable('-down'   , vtCommand, @chDown_m       , false);

RegisterVariable('+attack' , vtCommand, @chAttack_p     , false);

RegisterVariable('-attack' , vtCommand, @chAttack_m     , false);

RegisterVariable('color'   , vtCommand, @chColor        , false);

RegisterVariable('switch'  , vtCommand, @chSwitch       , false);

RegisterVariable('nextturn', vtCommand, @chNextTurn     , false);

RegisterVariable('timer'   , vtCommand, @chTimer        , false);

RegisterVariable('slot'    , vtCommand, @chSlot         , false);

RegisterVariable('put'     , vtCommand, @chPut          , false);

RegisterVariable('ljump'   , vtCommand, @chLJump        , false);

RegisterVariable('hjump'   , vtCommand, @chHJump        , false);

RegisterVariable('fullscr' , vtCommand, @chFullScr      , true );

RegisterVariable('+volup'  , vtCommand, @chVol_p        , true );

RegisterVariable('-volup'  , vtCommand, @chVol_m        , true );

RegisterVariable('+voldown', vtCommand, @chVol_m        , true );

RegisterVariable('-voldown', vtCommand, @chVol_p        , true );

RegisterVariable('findhh'  , vtCommand, @chFindhh       , true );

finalization

FreeVariablesList

end.