author | unc0rr |
Wed, 17 Sep 2008 17:33:44 +0000 | |
changeset 1259 | 0c660c3d98a4 |
parent 1066 | 1f1b3686a2b0 |
child 1351 | aa7aefec5c1b |
permissions | -rw-r--r-- |
4 | 1 |
(* |
1066 | 2 |
* Hedgewars, a free turn based strategy game |
883 | 3 |
* Copyright (c) 2004, 2005, 2007, 2008 Andrey Korotaev <unC0Rr@gmail.com> |
4 | 4 |
* |
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 |
|
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 |
|
12 |
* GNU General Public License for more details. |
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4 | 13 |
* |
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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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4 | 17 |
*) |
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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 SendIPCTimeInc; |
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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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var hiTicks: Word = 0; |
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implementation |
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uses uConsole, uConsts, uWorld, uMisc, uLand, uChat; |
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const isPonged: boolean = false; |
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type PCmd = ^TCmd; |
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TCmd = packed record |
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Next: PCmd; |
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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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var IPCSock: PTCPSocket = nil; |
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fds: PSDLNet_SocketSet; |
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headcmd: PCmd = nil; |
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lastcmd: PCmd = nil; |
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function AddCmd(Time: Longword; str: shortstring): PCmd; |
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var Result: PCmd; |
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begin |
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new(Result); |
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FillChar(Result^, sizeof(TCmd), 0); |
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Result^.Time:= Time; |
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Result^.str:= str; |
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dec(Result^.len, 2); // cut timestamp |
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if headcmd = nil then |
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begin |
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headcmd:= Result; |
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lastcmd:= Result |
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end else |
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begin |
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lastcmd^.Next:= Result; |
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lastcmd:= Result |
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end; |
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AddCmd:= Result |
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end; |
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procedure RemoveCmd; |
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var tmp: PCmd; |
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begin |
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TryDo(headcmd <> nil, 'Engine bug: headcmd = nil', true); |
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tmp:= headcmd; |
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headcmd:= headcmd^.Next; |
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if headcmd = nil then lastcmd:= nil; |
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dispose(tmp) |
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end; |
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procedure InitIPC; |
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var ipaddr: TIPAddress; |
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92 |
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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||
105 |
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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var loTicks: Word; |
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begin |
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case s[1] of |
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'!': begin {$IFDEF DEBUGFILE}AddFileLog('Ping? Pong!');{$ENDIF}isPonged:= true; end; |
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'?': SendIPC('!'); |
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'#': inc(hiTicks); |
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'e': ParseCommand(copy(s, 2, Length(s) - 1), true); |
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'E': OutError(copy(s, 2, Length(s) - 1), true); |
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'W': OutError(copy(s, 2, Length(s) - 1), false); |
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'M': CheckLandDigest(s); |
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'T': case s[2] of |
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'L': GameType:= gmtLocal; |
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'D': GameType:= gmtDemo; |
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'N': GameType:= gmtNet; |
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'S': GameType:= gmtSave; |
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else OutError(errmsgIncorrectUse + ' IPC "T" :' + s[2], true) end; |
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else |
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loTicks:= SDLNet_Read16(@s[byte(s[0]) - 1]); |
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AddCmd(hiTicks shl 16 + loTicks, s); |
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{$IFDEF DEBUGFILE}AddFileLog('IPC in: '+s[1]+' ticks '+inttostr(lastcmd^.Time));{$ENDIF} |
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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_Write16(GameTicks, @s[Succ(byte(s[0]))]); |
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{$IFDEF DEBUGFILE}AddFileLog('IPC send: '+s);{$ENDIF} |
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inc(s[0], 2); |
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SDLNet_TCP_Send(IPCSock, @s, Succ(byte(s[0]))) |
170 |
end |
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4 | 171 |
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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procedure SendIPCTimeInc; |
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const timeinc: shortstring = '#'; |
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begin |
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SendIPCRaw(@timeinc, 2) |
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end; |
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159 | 197 |
procedure IPCWaitPongEvent; |
4 | 198 |
begin |
199 |
isPonged:= false; |
|
200 |
repeat |
|
201 |
IPCCheckSock; |
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202 |
SDL_Delay(1) |
|
203 |
until isPonged |
|
204 |
end; |
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205 |
||
159 | 206 |
procedure SendIPCAndWaitReply(s: shortstring); |
207 |
begin |
|
208 |
SendIPC(s); |
|
209 |
SendIPC('?'); |
|
210 |
IPCWaitPongEvent |
|
211 |
end; |
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4 | 213 |
procedure NetGetNextCmd; |
214 |
var tmpflag: boolean; |
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s: shortstring; |
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begin |
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tmpflag:= true; |
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|
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while (headcmd <> nil) and ((GameTicks = headcmd^.Time) or (headcmd^.cmd = 's')) do |
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begin |
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case headcmd^.cmd of |
1038 | 222 |
'+': ; // do nothing - it's just empty packet |
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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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229 |
'D': ParseCommand('+down', true); |
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230 |
'd': ParseCommand('-down', true); |
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231 |
'A': ParseCommand('+attack', true); |
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232 |
'a': ParseCommand('-attack', true); |
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233 |
'S': ParseCommand('switch', true); |
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234 |
'j': ParseCommand('ljump', true); |
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235 |
'J': ParseCommand('hjump', true); |
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236 |
',': ParseCommand('skip', true); |
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237 |
's': begin |
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238 |
s:= copy(headcmd^.str, 2, Pred(headcmd^.len)); |
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239 |
AddChatString(s); |
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240 |
WriteLnToConsole(s) |
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241 |
end; |
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|
242 |
'N': begin |
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|
243 |
tmpflag:= false; |
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|
244 |
{$IFDEF DEBUGFILE}AddFileLog('got cmd "N": time '+inttostr(headcmd^.Time)){$ENDIF} |
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|
245 |
end; |
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|
246 |
'p': begin |
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|
247 |
TargetPoint.X:= SmallInt(SDLNet_Read16(@(headcmd^.X))); |
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|
248 |
TargetPoint.Y:= SmallInt(SDLNet_Read16(@(headcmd^.Y))); |
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|
249 |
ParseCommand('put', true) |
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|
250 |
end; |
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|
251 |
'P': begin |
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|
252 |
CursorPoint.X:= SmallInt(SDLNet_Read16(@(headcmd^.X)) + WorldDx); |
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|
253 |
CursorPoint.Y:= SmallInt(SDLNet_Read16(@(headcmd^.Y)) + WorldDy); |
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|
254 |
end; |
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|
255 |
'w': ParseCommand('setweap ' + headcmd^.str[2], true); |
1035 | 256 |
't': ParseCommand('taunt ' + headcmd^.str[2], true); |
977
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|
257 |
'1'..'5': ParseCommand('timer ' + headcmd^.cmd, true); |
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|
258 |
#128..char(128 + cMaxSlotIndex): ParseCommand('slot ' + char(byte(headcmd^.cmd) - 79), true) |
1035 | 259 |
else |
260 |
OutError('Unexpected protocol command: ' + headcmd^.cmd, True) |
|
977
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|
261 |
end; |
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|
262 |
RemoveCmd |
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|
263 |
end; |
351 | 264 |
|
648
fc5234aa6493
Use list instead of array (no limit for network packets amount)
unc0rr
parents:
526
diff
changeset
|
265 |
if (headcmd <> nil) then |
977
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|
266 |
TryDo(GameTicks < headcmd^.Time, |
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|
267 |
'oops, queue error. in buffer: ' + headcmd^.cmd + |
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|
268 |
' (' + inttostr(GameTicks) + ' > ' + |
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|
269 |
inttostr(headcmd^.Time) + ')', |
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|
270 |
true); |
4 | 271 |
|
648
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|
272 |
isInLag:= (headcmd = nil) and tmpflag |
4 | 273 |
end; |
274 |
||
275 |
end. |