hedgewars/uCommands.pas
author nemo
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2011 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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 *)
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{$INCLUDE "options.inc"}
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unit uCommands;
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interface
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var isDeveloperMode: boolean;
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type TVariableType = (vtCommand, vtLongInt, vthwFloat, vtBoolean);
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     TCommandHandler = procedure (var params: shortstring);
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procedure initModule;
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procedure freeModule;
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procedure RegisterVariable(Name: shortstring; VType: TVariableType; p: pointer; Trusted: boolean);
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procedure ParseCommand(CmdStr: shortstring; TrustedSource: boolean);
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procedure StopMessages(Message: Longword);
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implementation
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uses Types, uConsts, uVariables, uConsole, uUtils, uDebug;
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type  PVariable = ^TVariable;
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      TVariable = record
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                     Next: PVariable;
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                     Name: string[15];
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                    VType: TVariableType;
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                  Handler: pointer;
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                  Trusted: boolean;
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                  end;
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var
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      Variables: PVariable;
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procedure RegisterVariable(Name: shortstring; VType: TVariableType; p: pointer; Trusted: boolean);
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var value: PVariable;
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begin
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New(value);
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TryDo(value <> nil, 'RegisterVariable: value = nil', true);
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FillChar(value^, sizeof(TVariable), 0);
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value^.Name:= Name;
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value^.VType:= VType;
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value^.Handler:= p;
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value^.Trusted:= Trusted;
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if Variables = nil then Variables:= value
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                   else begin
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                        value^.Next:= Variables;
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                        Variables:= value
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                        end;
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end;
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procedure ParseCommand(CmdStr: shortstring; TrustedSource: boolean);
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var ii: LongInt;
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    s: shortstring;
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    t: PVariable;
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    c: char;
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begin
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//WriteLnToConsole(CmdStr);
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if CmdStr[0]=#0 then exit;
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c:= CmdStr[1];
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if c in ['/', '$'] then Delete(CmdStr, 1, 1) else c:= '/';
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s:= '';
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SplitBySpace(CmdStr, s);
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AddFileLog('[Cmd] ' + c + CmdStr + ' (' + inttostr(length(s)) + ')');
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t:= Variables;
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while t <> nil do
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      begin
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      if t^.Name = CmdStr then
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         begin
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         if TrustedSource or t^.Trusted then
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            case t^.VType of
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              vtCommand: if c='/' then
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                         begin
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                         TCommandHandler(t^.Handler)(s);
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                         end;
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              vtLongInt: if c='$' then
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                         if s[0]=#0 then
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                            begin
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                            str(PLongInt(t^.Handler)^, s);
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                            WriteLnToConsole('$' + CmdStr + ' is "' + s + '"');
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                            end else val(s, PLongInt(t^.Handler)^);
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              vthwFloat: if c='$' then
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                         if s[0]=#0 then
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                            begin
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                            //str(PhwFloat(t^.Handler)^:4:6, s);
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                            WriteLnToConsole('$' + CmdStr + ' is "' + s + '"');
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                            end else; //val(s, PhwFloat(t^.Handler)^, i);
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             vtBoolean: if c='$' then
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                         if s[0]=#0 then
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                            begin
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                            str(ord(boolean(t^.Handler^)), s);
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                            WriteLnToConsole('$' + CmdStr + ' is "' + s + '"');
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                            end else
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                            begin
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                            val(s, ii);
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                            boolean(t^.Handler^):= not (ii = 0)
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                            end;
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              end;
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         exit
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         end else t:= t^.Next
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      end;
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case c of
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     '$': WriteLnToConsole(errmsgUnknownVariable + ': "$' + CmdStr + '"')
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     else WriteLnToConsole(errmsgUnknownCommand  + ': "/' + CmdStr + '"') end
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end;
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procedure StopMessages(Message: Longword);
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begin
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if (Message and gmLeft) <> 0 then ParseCommand('/-left', true) else
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if (Message and gmRight) <> 0 then ParseCommand('/-right', true) else
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if (Message and gmUp) <> 0 then ParseCommand('/-up', true) else
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if (Message and gmDown) <> 0 then ParseCommand('/-down', true) else
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if (Message and gmAttack) <> 0 then ParseCommand('/-attack', true)
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end;
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procedure initModule;
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begin
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    Variables:= nil;
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    isDeveloperMode:= true;
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end;
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procedure freeModule;
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var t, tt: PVariable;
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begin
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    tt:= Variables;
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    Variables:= nil;
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    while tt <> nil do
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    begin
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        t:= tt;
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        tt:= tt^.Next;
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        Dispose(t)
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    end;
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end;
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end.