- usermessages.inc
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/**
* vim: set ts=4 :
* =============================================================================
* SourceMod (C)2004-2008 AlliedModders LLC. All rights reserved.
* =============================================================================
*
* This file is part of the SourceMod/SourcePawn SDK.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 3.0, as published by the
* Free Software Foundation.
*
* 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, see <http://www.gnu.org/licenses/>.
*
* As a special exception, AlliedModders LLC gives you permission to link the
* code of this program (as well as its derivative works) to "Half-Life 2," the
* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
* by the Valve Corporation. You must obey the GNU General Public License in
* all respects for all other code used. Additionally, AlliedModders LLC grants
* this exception to all derivative works. AlliedModders LLC defines further
* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
* or <http://www.sourcemod.net/license.php>.
*
* Version: $Id$
*/
#if defined _eventsmsgs_included
#endinput
#endif
#define _eventsmsgs_included
/**
* UserMsg helper values.
*/
enum UserMsg
{
INVALID_MESSAGE_ID = -1
};
/**
* UserMsg message serialization formats
*/
enum UserMessageType
{
UM_BitBuf = 0,
UM_Protobuf
};
/**
* @section Message Flags.
*/
#define USERMSG_RELIABLE (1<<2) /**< Message will be set on the reliable stream */
#define USERMSG_INITMSG (1<<3) /**< Message will be considered to be an initmsg */
#define USERMSG_BLOCKHOOKS (1<<7) /**< Prevents the message from triggering SourceMod and Metamod hooks */
/**
* @endsection
*/
/**
* Returns usermessage serialization type used for the current engine
*
* @return The supported usermessage type.
*/
native UserMessageType GetUserMessageType();
stock Protobuf UserMessageToProtobuf(Handle msg)
{
if (GetUserMessageType() != UM_Protobuf)
{
return null;
}
return view_as<Protobuf>(msg);
}
// Make sure to only call this on writable buffers (eg from StartMessage).
stock BfWrite UserMessageToBfWrite(Handle msg)
{
if (GetUserMessageType() == UM_Protobuf)
{
return null;
}
return view_as<BfWrite>(msg);
}
// Make sure to only call this on readable buffers (eg from a message hook).
stock BfRead UserMessageToBfRead(Handle msg)
{
if (GetUserMessageType() == UM_Protobuf)
{
return null;
}
return view_as<BfRead>(msg);
}
/**
* Returns the ID of a given message, or -1 on failure.
*
* @param msg String containing message name (case sensitive).
* @return A message index, or INVALID_MESSAGE_ID on failure.
*/
native UserMsg GetUserMessageId(const char[] msg);
/**
* Retrieves the name of a message by ID.
*
* @param msg_id Message index.
* @param msg Buffer to store the name of the message.
* @param maxlength Maximum length of string buffer.
* @return True if message index is valid, false otherwise.
*/
native bool GetUserMessageName(UserMsg msg_id, char[] msg, int maxlength);
/**
* Starts a usermessage (network message).
*
* @note Only one message can be active at a time.
* @note It is illegal to send any message while a non-intercept hook is in progress.
*
* @param msgname Message name to start.
* @param clients Array containing player indexes to broadcast to.
* @param numClients Number of players in the array.
* @param flags Optional flags to set.
* @return A handle to a bf_write bit packing structure, or
* INVALID_HANDLE on failure.
* @error Invalid message name, unable to start a message, invalid client,
* or client not connected.
*/
native Handle StartMessage(const char[] msgname, const int[] clients, int numClients, int flags=0);
/**
* Starts a usermessage (network message).
*
* @note Only one message can be active at a time.
* @note It is illegal to send any message while a non-intercept hook is in progress.
*
* @param msg Message index to start.
* @param clients Array containing player indexes to broadcast to.
* @param numClients Number of players in the array.
* @param flags Optional flags to set.
* @return A handle to a bf_write bit packing structure, or
* INVALID_HANDLE on failure.
* @error Invalid message name, unable to start a message, invalid client,
* or client not connected.
*/
native Handle StartMessageEx(UserMsg msg, const int[] clients, int numClients, int flags=0);
/**
* Ends a previously started user message (network message).
*/
native void EndMessage();
/**
* Hook function types for user messages.
*/
typeset MsgHook
{
/**
* Called when a bit buffer based usermessage is hooked
*
* @param msg_id Message index.
* @param msg Handle to the input bit buffer.
* @param players Array containing player indexes.
* @param playersNum Number of players in the array.
* @param reliable True if message is reliable, false otherwise.
* @param init True if message is an initmsg, false otherwise.
* @return Ignored for normal hooks. For intercept hooks, Plugin_Handled
* blocks the message from being sent, and Plugin_Continue
* resumes normal functionality.
*/
function Action (UserMsg msg_id, BfRead msg, const int[] players, int playersNum, bool reliable, bool init);
/**
* Called when a protobuf based usermessage is hooked
*
* @param msg_id Message index.
* @param msg Handle to the input protobuf.
* @param players Array containing player indexes.
* @param playersNum Number of players in the array.
* @param reliable True if message is reliable, false otherwise.
* @param init True if message is an initmsg, false otherwise.
* @return Ignored for normal hooks. For intercept hooks, Plugin_Handled
* blocks the message from being sent, and Plugin_Continue
* resumes normal functionality.
*/
function Action (UserMsg msg_id, Protobuf msg, const int[] players, int playersNum, bool reliable, bool init);
};
/**
* Called when a message hook has completed.
*
* @param msg_id Message index.
* @param sent True if message was sent, false if blocked.
*/
typedef MsgPostHook = function void (UserMsg msg_id, bool sent);
/**
* Hooks a user message.
*
* @param msg_id Message index.
* @param hook Function to use as a hook.
* @param intercept If intercept is true, message will be fully intercepted,
* allowing the user to block the message. Otherwise,
* the hook is normal and ignores the return value.
* @param post Notification function.
* @error Invalid message index.
*/
native void HookUserMessage(UserMsg msg_id, MsgHook hook, bool intercept=false, MsgPostHook post=INVALID_FUNCTION);
/**
* Removes one usermessage hook.
*
* @param msg_id Message index.
* @param hook Function used for the hook.
* @param intercept Specifies whether the hook was an intercept hook or not.
* @error Invalid message index.
*/
native void UnhookUserMessage(UserMsg msg_id, MsgHook hook, bool intercept=false);
/**
* Starts a usermessage (network message) that broadcasts to all clients.
*
* @note See StartMessage or StartMessageEx().
*
* @param msgname Message name to start.
* @param flags Optional flags to set.
* @return A handle to a bf_write bit packing structure, or
* INVALID_HANDLE on failure.
*/
stock Handle StartMessageAll(const char[] msgname, int flags=0)
{
int total = 0;
int[] clients = new int[MaxClients];
for (int i = 1; i <= MaxClients; i++)
{
if (IsClientConnected(i))
{
clients[total++] = i;
}
}
return StartMessage(msgname, clients, total, flags);
}
/**
* Starts a simpler usermessage (network message) for one client.
*
* @note See StartMessage or StartMessageEx().
*
* @param msgname Message name to start.
* @param client Client to send to.
* @param flags Optional flags to set.
* @return A handle to a bf_write bit packing structure, or
* INVALID_HANDLE on failure.
*/
stock Handle StartMessageOne(const char[] msgname, int client, int flags=0)
{
int players[1];
players[0] = client;
return StartMessage(msgname, players, 1, flags);
}