src/game/g_nethandler.pas

   1 (* Copyright (C)  Doom 2D: Forever Developers
   2  *
   3  * This program is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, version 3 of the License ONLY.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  14  *)
  15 {$INCLUDE ../shared/a_modes.inc}
  16 unit g_nethandler;
  17
  18 interface
  19
  20 uses e_msg, g_net, g_netmsg, ENet;
  21
  22 type
  23   TNetClientMsgHandler = function (M: TMsg): Boolean;
  24   TNetHostMsgHandler = function (S: pTNetClient; M: TMsg): Boolean;
  25
  26 procedure g_Net_Client_HandlePacket(P: pENetPacket; Handler: TNetClientMsgHandler);
  27 procedure g_Net_Host_HandlePacket(S: pTNetClient; P: pENetPacket; Handler: TNetHostMsgHandler);
  28
  29 function g_Net_ClientMsgHandler(NetMsg: TMsg): Boolean;
  30 function g_Net_ClientLightMsgHandler(NetMsg: TMsg): Boolean;
  31 function g_Net_HostMsgHandler(S: pTNetClient; NetMsg: TMsg): Boolean;
  32
  33 implementation
  34
  35 uses sysutils, g_console;
  36
  37 procedure g_Net_Client_HandlePacket(P: pENetPacket; Handler: TNetClientMsgHandler);
  38 var
  39   MNext: Integer;
  40   MSize: LongWord;
  41   MHandled: Boolean = false;
  42   NetMsg: TMsg;
  43   Err: Boolean;
  44 begin
  45   if not NetMsg.Init(P^.data, P^.dataLength, True) then
  46     Exit;
  47
  48   Err := False;
  49   MNext := 0;
  50
  51   while (NetMsg.BytesLeft() > 0) and (not Err) do
  52   begin
  53     try
  54       MSize := NetMsg.ReadLongWord();
  55       MNext := NetMsg.ReadCount + MSize;
  56       MHandled := Handler(NetMsg); // TODO: maybe do something with this bool
  57       NetMsg.Seek(MNext);
  58     except
  59       Err := True;
  60     end;
  61   end;
  62
  63   MHandled := not MHandled; //k8: stfu, fpc!
  64
  65   enet_packet_destroy(P);
  66   //if Err then begin MC_MalformedPacket(S); Exit; end;
  67 end;
  68
  69 procedure g_Net_Host_HandlePacket(S: pTNetClient; P: pENetPacket; Handler: TNetHostMsgHandler);
  70 var
  71   MNext: Integer;
  72   MSize: LongWord;
  73   MHandled: Boolean = false;
  74   NetMsg: TMsg;
  75   Err: Boolean;
  76 begin
  77   if not NetMsg.Init(P^.data, P^.dataLength, True) then
  78     Exit;
  79
  80   Err := False;
  81   MNext := 0;
  82
  83   while (NetMsg.BytesLeft() > 0) and (not Err) do
  84   begin
  85     try
  86       MSize := NetMsg.ReadLongWord();
  87       MNext := NetMsg.ReadCount + MSize;
  88       MHandled := Handler(S, NetMsg); // TODO: maybe do something with this bool
  89       NetMsg.Seek(MNext);
  90     except
  91       Err := True;
  92     end;
  93   end;
  94
  95   MHandled := not MHandled; //k8: stfu, fpc!
  96
  97   enet_packet_destroy(P);
  98   if Err then begin MH_MalformedPacket(S); Exit; end;
  99 end;
 100
 101
 102 function g_Net_ClientMsgHandler(NetMsg: TMsg): Boolean;
 103 var
 104   MID: Byte;
 105   Err: Boolean;
 106 begin
 107   Result := True;
 108   Err := False;
 109   try
 110     MID := NetMsg.ReadByte();
 111   except
 112     MID := 0;
 113     Err := True;
 114   end;
 115
 116   //if Err then begin MC_MalformedPacket(S); Exit; end;
 117
 118   case MID of
 119     NET_MSG_CHAT:   MC_RECV_Chat(NetMsg);
 120     NET_MSG_GFX:    MC_RECV_Effect(NetMsg);
 121     NET_MSG_SND:    MC_RECV_Sound(NetMsg);
 122     NET_MSG_SCORE:  MC_RECV_GameStats(NetMsg);
 123     NET_MSG_COOP:   MC_RECV_CoopStats(NetMsg);
 124     NET_MSG_GEVENT: MC_RECV_GameEvent(NetMsg);
 125     NET_MSG_FLAG:   MC_RECV_FlagEvent(NetMsg);
 126     NET_MSG_GSET:   MC_RECV_GameSettings(NetMsg);
 127     NET_MSG_FLAGPOS:MC_RECV_FlagPos(NetMsg);
 128
 129     NET_MSG_PLR:    MC_RECV_PlayerCreate(NetMsg);
 130     NET_MSG_PLRPOS: MC_RECV_PlayerPos(NetMsg);
 131     NET_MSG_PLRSTA: MC_RECV_PlayerStats(NetMsg);
 132     NET_MSG_PLRDEL: MC_RECV_PlayerDelete(NetMsg);
 133     NET_MSG_PLRDMG: MC_RECV_PlayerDamage(NetMsg);
 134     NET_MSG_PLRDIE: MC_RECV_PlayerDeath(NetMsg);
 135     NET_MSG_PLRFIRE:MC_RECV_PlayerFire(NetMsg);
 136     NET_MSG_PLRSET: MC_RECV_PlayerSettings(NetMsg);
 137
 138     NET_MSG_MSPAWN: MC_RECV_MonsterSpawn(NetMsg);
 139     NET_MSG_MPOS:   MC_RECV_MonsterPos(NetMsg);
 140     NET_MSG_MSTATE: MC_RECV_MonsterState(NetMsg);
 141     NET_MSG_MSHOT:  MC_RECV_MonsterShot(NetMsg);
 142     NET_MSG_MDEL:   MC_RECV_MonsterDelete(NetMsg);
 143
 144     NET_MSG_SHADD:  MC_RECV_CreateShot(NetMsg);
 145     NET_MSG_SHPOS:  MC_RECV_UpdateShot(NetMsg);
 146     NET_MSG_SHDEL:  MC_RECV_DeleteShot(NetMsg);
 147
 148     NET_MSG_ISPAWN: MC_RECV_ItemSpawn(NetMsg);
 149     NET_MSG_IDEL:   MC_RECV_ItemDestroy(NetMsg);
 150     NET_MSG_IPOS:   MC_RECV_ItemPos(NetMsg);
 151
 152     NET_MSG_PSTATE: MC_RECV_PanelState(NetMsg);
 153     NET_MSG_PTEX:   MC_RECV_PanelTexture(NetMsg);
 154
 155     NET_MSG_TSOUND: MC_RECV_TriggerSound(NetMsg);
 156     NET_MSG_TMUSIC: MC_RECV_TriggerMusic(NetMsg);
 157
 158     NET_MSG_TIME_SYNC:  MC_RECV_TimeSync(NetMsg);
 159     NET_MSG_VOTE_EVENT: MC_RECV_VoteEvent(NetMsg);
 160
 161     else
 162     begin
 163       Result := False;
 164       g_Console_Add('unknown message ID: ' + IntToStr(MID));
 165     end;
 166   end;
 167 end;
 168
 169 function g_Net_ClientLightMsgHandler(NetMsg: TMsg): Boolean;
 170 var
 171   MID: Byte;
 172   Err: Boolean;
 173 begin
 174   Result := True;
 175   Err := False;
 176   try
 177     MID := NetMsg.ReadByte();
 178   except
 179     MID := 0;
 180     Err := True;
 181   end;
 182
 183   //if Err then begin MC_MalformedPacket(S); Exit; end;
 184
 185   case MID of
 186     NET_MSG_GEVENT: MC_RECV_GameEvent(NetMsg);
 187     NET_MSG_GSET:   MC_RECV_GameSettings(NetMsg);
 188
 189     NET_MSG_PLR:    if NetState <> NET_STATE_AUTH then MC_RECV_PlayerCreate(NetMsg);
 190     NET_MSG_PLRDEL: if NetState <> NET_STATE_AUTH then MC_RECV_PlayerDelete(NetMsg);
 191
 192     else Result := False;
 193   end;
 194 end;
 195
 196 function g_Net_HostMsgHandler(S: pTNetClient; NetMsg: TMsg): Boolean;
 197 var
 198   MID: Byte;
 199   Err: Boolean;
 200 begin
 201   Result := True;
 202   Err := False;
 203   try
 204     MID := NetMsg.ReadByte();
 205   except
 206     MID := 0;
 207     Err := True;
 208   end;
 209
 210   if Err then begin MH_MalformedPacket(S); Exit; end;
 211
 212   case MID of
 213     NET_MSG_INFO: MH_RECV_Info(S, NetMsg);
 214     NET_MSG_CHAT: MH_RECV_Chat(S, NetMsg);
 215     NET_MSG_REQFST: MH_RECV_FullStateRequest(S, NetMsg);
 216
 217     NET_MSG_PLRPOS: MH_RECV_PlayerPos(S, NetMsg);
 218     NET_MSG_PLRSET: MH_RECV_PlayerSettings(S, NetMsg);
 219     NET_MSG_CHEAT:  MH_RECV_CheatRequest(S, NetMsg);
 220
 221     NET_MSG_RCON_AUTH: MH_RECV_RCONPassword(S, NetMsg);
 222     NET_MSG_RCON_CMD:  MH_RECV_RCONCommand(S, NetMsg);
 223
 224     //NET_MSG_MAP_REQUEST: MH_RECV_MapRequest(S, NetMsg);
 225     //NET_MSG_RES_REQUEST: MH_RECV_ResRequest(S, NetMsg);
 226
 227     NET_MSG_VOTE_EVENT: MH_RECV_Vote(S, NetMsg);
 228   end;
 229 end;
 230
 231 end.