(*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2011 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 uCommands;

interface

var isDeveloperMode: boolean;

type TVariableType = (vtCommand, vtLongInt, vthwFloat, vtBoolean);

     TCommandHandler = procedure (var params: shortstring);

procedure initModule;

procedure freeModule;

procedure RegisterVariable(Name: shortstring; VType: TVariableType; p: pointer; Trusted: boolean);

procedure ParseCommand(CmdStr: shortstring; TrustedSource: boolean);

procedure StopMessages(Message: Longword);

implementation

type  PVariable = ^TVariable;

      TVariable = record

                     Next: PVariable;

                     Name: string[15];

                    VType: TVariableType;

                  Handler: pointer;

                  Trusted: boolean;

                  end;

var

      Variables: PVariable;

procedure RegisterVariable(Name: shortstring; VType: TVariableType; p: pointer; Trusted: boolean);

var value: PVariable;

begin

New(value);

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

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

value^.Name:= Name;

value^.VType:= VType;

value^.Handler:= p;

value^.Trusted:= Trusted;

if Variables = nil then Variables:= value

                   else begin

                        value^.Next:= Variables;

                        Variables:= value

                        end;

end;

procedure ParseCommand(CmdStr: shortstring; TrustedSource: boolean);

var ii: LongInt;

    t: PVariable;

    c: char;

begin

//WriteLnToConsole(CmdStr);

if CmdStr[0]=#0 then exit;

c:= CmdStr[1];

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

s:= '';

SplitBySpace(CmdStr, s);

AddFileLog('[Cmd] ' + c + CmdStr + ' (' + inttostr(length(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;

              vtLongInt: if c='$' then

                         if s[0]=#0 then

                            begin

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

              vthwFloat: if c='$' then

                         if s[0]=#0 then

                            begin

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

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

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

             vtBoolean: if c='$' then

                         if s[0]=#0 then

                            begin

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

                            begin

                            val(s, ii);

                            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 StopMessages(Message: Longword);

begin

if (Message and gmLeft) <> 0 then ParseCommand('/-left', true) else

if (Message and gmRight) <> 0 then ParseCommand('/-right', true) else

if (Message and gmUp) <> 0 then ParseCommand('/-up', true) else

if (Message and gmDown) <> 0 then ParseCommand('/-down', true) else

if (Message and gmAttack) <> 0 then ParseCommand('/-attack', true)

end;

procedure initModule;

begin

    Variables:= nil;

    isDeveloperMode:= true;

end;

procedure freeModule;

var t, tt: PVariable;

begin

    tt:= Variables;

    Variables:= nil;

    while tt <> nil do

    begin

        t:= tt;

        tt:= tt^.Next;

        Dispose(t)

    end;

end;

end.