author | unc0rr |
Wed, 30 May 2007 19:29:27 +0000 | |
changeset 532 | 8136a5363586 |
parent 526 | e3689572bb15 |
child 648 | fc5234aa6493 |
permissions | -rw-r--r-- |
4 | 1 |
(* |
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* Hedgewars, a worms-like game |
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* Copyright (c) 2004, 2005 Andrey Korotaev <unC0Rr@gmail.com> |
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* |
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183 | 5 |
* 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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4 | 8 |
* |
183 | 9 |
* 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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unit uIO; |
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interface |
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uses SDLh; |
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{$INCLUDE options.inc} |
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const ipcPort: Word = 0; |
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procedure SendIPC(s: shortstring); |
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procedure SendIPCXY(cmd: char; X, Y: SmallInt); |
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procedure SendIPCRaw(p: pointer; len: Longword); |
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procedure SendIPCAndWaitReply(s: shortstring); |
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procedure IPCWaitPongEvent; |
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procedure IPCCheckSock; |
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procedure InitIPC; |
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procedure CloseIPC; |
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procedure NetGetNextCmd; |
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implementation |
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uses uConsole, uConsts, uWorld, uMisc, uLand; |
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const isPonged: boolean = false; |
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MAXCMDS = 65535; |
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var IPCSock: PTCPSocket = nil; |
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fds: PSDLNet_SocketSet; |
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extcmd: array[0..MAXCMDS] of packed record |
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Time: LongWord; |
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case byte of |
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1: (len: byte; |
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cmd: Char; |
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X, Y: SmallInt); |
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2: (str: shortstring); |
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end; |
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cmdcurpos: LongInt = 0; |
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cmdendpos: LongInt = -1; |
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procedure InitIPC; |
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var ipaddr: TIPAddress; |
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begin |
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WriteToConsole('Init SDL_Net... '); |
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SDLTry(SDLNet_Init = 0, true); |
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fds:= SDLNet_AllocSocketSet(1); |
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SDLTry(fds <> nil, true); |
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WriteLnToConsole(msgOK); |
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WriteToConsole('Establishing IPC connection... '); |
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SDLTry(SDLNet_ResolveHost(ipaddr, '127.0.0.1', ipcPort) = 0, true); |
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IPCSock:= SDLNet_TCP_Open(ipaddr); |
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SDLTry(IPCSock <> nil, true); |
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WriteLnToConsole(msgOK) |
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end; |
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procedure CloseIPC; |
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begin |
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SDLNet_FreeSocketSet(fds); |
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SDLNet_TCP_Close(IPCSock); |
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SDLNet_Quit |
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end; |
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procedure ParseIPCCommand(s: shortstring); |
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begin |
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case s[1] of |
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'!': begin {$IFDEF DEBUGFILE}AddFileLog('Ping? Pong!');{$ENDIF}isPonged:= true; end; |
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'?': SendIPC('!'); |
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'e': ParseCommand(copy(s, 2, Length(s) - 1), true); |
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'E': OutError(copy(s, 2, Length(s) - 1), true); |
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'W': OutError(copy(s, 2, Length(s) - 1), false); |
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'M': CheckLandDigest(s); |
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'T': case s[2] of |
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'L': GameType:= gmtLocal; |
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'D': GameType:= gmtDemo; |
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'N': GameType:= gmtNet; |
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'S': GameType:= gmtSave; |
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else OutError(errmsgIncorrectUse + ' IPC "T" :' + s[2], true) end; |
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else |
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inc(cmdendpos); |
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TryDo(cmdendpos <= MAXCMDS, 'Too many commands in queue', true); |
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extcmd[cmdendpos].Time := SDLNet_Read32(@s[byte(s[0]) - 3]); |
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extcmd[cmdendpos].str := s; |
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{$IFDEF DEBUGFILE}AddFileLog('IPC in: '+s[1]+' ticks '+inttostr(extcmd[cmdendpos].Time)+' at '+inttostr(cmdendpos));{$ENDIF} |
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dec(extcmd[cmdendpos].len, 4) |
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end |
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end; |
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procedure IPCCheckSock; |
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const ss: string = ''; |
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var i: LongInt; |
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buf: array[0..255] of byte; |
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s: shortstring absolute buf; |
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begin |
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fds^.numsockets:= 0; |
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SDLNet_AddSocket(fds, IPCSock); |
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while SDLNet_CheckSockets(fds, 0) > 0 do |
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begin |
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i:= SDLNet_TCP_Recv(IPCSock, @buf[1], 255 - Length(ss)); |
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if i > 0 then |
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begin |
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buf[0]:= i; |
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ss:= ss + s; |
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while (Length(ss) > 1)and(Length(ss) > byte(ss[1])) do |
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begin |
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ParseIPCCommand(copy(ss, 2, byte(ss[1]))); |
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Delete(ss, 1, Succ(byte(ss[1]))) |
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end |
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end else OutError('IPC connection lost', true) |
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end; |
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end; |
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procedure SendIPC(s: shortstring); |
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begin |
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if IPCSock <> nil then |
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begin |
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if s[0]>#251 then s[0]:= #251; |
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SDLNet_Write32(GameTicks, @s[Succ(byte(s[0]))]); |
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{$IFDEF DEBUGFILE}AddFileLog('IPC send: '+s);{$ENDIF} |
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inc(s[0],4); |
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SDLNet_TCP_Send(IPCSock, @s, Succ(byte(s[0]))) |
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end |
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4 | 136 |
end; |
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procedure SendIPCRaw(p: pointer; len: Longword); |
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begin |
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if IPCSock <> nil then |
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begin |
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SDLNet_TCP_Send(IPCSock, p, len) |
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end |
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end; |
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procedure SendIPCXY(cmd: char; X, Y: SmallInt); |
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var s: shortstring; |
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begin |
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s[0]:= #5; |
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s[1]:= cmd; |
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SDLNet_Write16(X, @s[2]); |
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SDLNet_Write16(Y, @s[4]); |
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SendIPC(s) |
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end; |
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159 | 156 |
procedure IPCWaitPongEvent; |
4 | 157 |
begin |
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isPonged:= false; |
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repeat |
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IPCCheckSock; |
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SDL_Delay(1) |
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until isPonged |
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end; |
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procedure SendIPCAndWaitReply(s: shortstring); |
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begin |
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SendIPC(s); |
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SendIPC('?'); |
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IPCWaitPongEvent |
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end; |
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4 | 172 |
procedure NetGetNextCmd; |
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var tmpflag: boolean; |
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begin |
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while (cmdcurpos <= cmdendpos)and(extcmd[cmdcurpos].cmd = 's') do |
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begin |
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WriteLnToConsole('> ' + copy(extcmd[cmdcurpos].str, 2, Pred(extcmd[cmdcurpos].len))); |
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AddCaption('> ' + copy(extcmd[cmdcurpos].str, 2, Pred(extcmd[cmdcurpos].len)), $FFFFFF, capgrpNetSay); |
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inc(cmdcurpos) |
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end; |
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if cmdcurpos <= cmdendpos then |
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TryDo(GameTicks <= extcmd[cmdcurpos].Time, |
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'oops, queue error. in buffer: ' + extcmd[cmdcurpos].cmd + |
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' (' + inttostr(GameTicks) + ' > ' + |
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inttostr(extcmd[cmdcurpos].Time) + ')', |
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true); |
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4 | 188 |
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tmpflag:= true; |
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while (cmdcurpos <= cmdendpos)and(GameTicks = extcmd[cmdcurpos].Time) do |
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begin |
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case extcmd[cmdcurpos].cmd of |
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'L': ParseCommand('+left', true); |
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'l': ParseCommand('-left', true); |
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'R': ParseCommand('+right', true); |
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'r': ParseCommand('-right', true); |
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'U': ParseCommand('+up', true); |
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'u': ParseCommand('-up', true); |
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'D': ParseCommand('+down', true); |
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'd': ParseCommand('-down', true); |
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'A': ParseCommand('+attack', true); |
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'a': ParseCommand('-attack', true); |
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'S': ParseCommand('switch', true); |
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'j': ParseCommand('ljump', true); |
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'J': ParseCommand('hjump', true); |
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',': ParseCommand('skip', true); |
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'N': begin |
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tmpflag:= false; |
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{$IFDEF DEBUGFILE}AddFileLog('got cmd "N": time '+inttostr(extcmd[cmdcurpos].Time)){$ENDIF} |
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end; |
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'p': begin |
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392 | 212 |
TargetPoint.X:= SmallInt(SDLNet_Read16(@extcmd[cmdcurpos].X)); |
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TargetPoint.Y:= SmallInt(SDLNet_Read16(@extcmd[cmdcurpos].Y)); |
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351 | 214 |
ParseCommand('put', true) |
4 | 215 |
end; |
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'P': begin |
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392 | 217 |
CursorPoint.X:= SmallInt(SDLNet_Read16(@extcmd[cmdcurpos].X) + WorldDx); |
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CursorPoint.Y:= SmallInt(SDLNet_Read16(@extcmd[cmdcurpos].Y) + WorldDy); |
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4 | 219 |
end; |
351 | 220 |
'1'..'5': ParseCommand('timer ' + extcmd[cmdcurpos].cmd, true); |
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#128..char(128 + cMaxSlotIndex): ParseCommand('slot ' + char(byte(extcmd[cmdcurpos].cmd) - 79), true) |
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4 | 222 |
end; |
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inc(cmdcurpos) |
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end; |
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isInLag:= (cmdcurpos > cmdendpos) and tmpflag |
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end; |
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end. |