amxmodx/dlls/ns/MessageHandler.cpp

// vim: set ts=4 sw=4 tw=99 noet:
//
// AMX Mod X, based on AMX Mod by Aleksander Naszko ("OLO").
// Copyright (C) The AMX Mod X Development Team.
//
// This software is licensed under the GNU General Public License, version 3 or higher.
// Additional exceptions apply. For full license details, see LICENSE.txt or visit:
//     https://alliedmods.net/amxmodx-license

//
// Natural Selection Module
//

/* This file contains the initialization routine and message hooks
 * for the message handler.  Note that all of the message hooks
 * except for MessageBegin_Post are NOT hooked unless the gameDLL
 * is sending a message we care about.
 */

#include "amxxmodule.h"
#include "ns.h"
#include "utilfunctions.h"
#include "GameManager.h"
#include "MessageHandler.h"

MessageHandler *MessageLists[256];

MessageHandler *HookedMessage;

bool MessageHandler_Initialized=false;

// This is called through ServerActivate_Post
void Initialize_MessageHandler(void)
{
	if (MessageHandler_Initialized)
	{
		return;
	}

	MessageHandler_Initialized=true;

	int i=0;

	while (i<255)
	{
		MessageLists[i++]=NULL;
	};

	// Hook our messages
	int index;

	index=GET_USER_MSG_ID(&Plugin_info,"Countdown",NULL);

	if (index)
	{
		MessageLists[index]=new MessageCountDown;
	}

	index=GET_USER_MSG_ID(&Plugin_info,"GameStatus",NULL);

	if (index)
	{
		MessageLists[index]=new MessageGameStatus;
	}

#if 0
	index=GET_USER_MSG_ID(&Plugin_info,"Particles",NULL);
	
	if (index)
	{
		MessageLists[index]=new MessageDebug;
	}
#endif
	// Start hooking messagebegin_post
	g_pengfuncsTable_Post->pfnMessageBegin=MessageBegin_Post;

};

void MessageBegin_Post(int msg_dest, int msg_type, const float *pOrigin, edict_t *ed)
{
	// Sanity check, should never matter
	if (msg_type < 0 || msg_type > 255)
	{
		RETURN_META(MRES_IGNORED);
	}

	// Has a hooked message?
	if (MessageLists[msg_type]!=NULL) 
	{
		// Should this message be hooked?
		if (MessageLists[msg_type]->Begin(msg_dest,msg_type,pOrigin,ed)==1)
		{
			// This message is going to all be hooked

			// save pointer to our class
			HookedMessage=MessageLists[msg_type];

			// Tell metamod to forward
			g_pengfuncsTable_Post->pfnWriteByte=WriteByte_Post;
			g_pengfuncsTable_Post->pfnWriteChar=WriteChar_Post;
			g_pengfuncsTable_Post->pfnWriteShort=WriteShort_Post;
			g_pengfuncsTable_Post->pfnWriteLong=WriteLong_Post;
			g_pengfuncsTable_Post->pfnWriteAngle=WriteAngle_Post;
			g_pengfuncsTable_Post->pfnWriteCoord=WriteCoord_Post;
			g_pengfuncsTable_Post->pfnWriteString=WriteString_Post;
			g_pengfuncsTable_Post->pfnWriteEntity=WriteEntity_Post;
			g_pengfuncsTable_Post->pfnMessageEnd=MessageEnd_Post;


		}
	}
	RETURN_META(MRES_IGNORED);
}

void MessageEnd_Post(void)
{
	HookedMessage->End();

	HookedMessage=NULL;

	// Stop metamod forwarding
	g_pengfuncsTable_Post->pfnWriteByte=NULL;
	g_pengfuncsTable_Post->pfnWriteChar=NULL;
	g_pengfuncsTable_Post->pfnWriteShort=NULL;
	g_pengfuncsTable_Post->pfnWriteLong=NULL;
	g_pengfuncsTable_Post->pfnWriteAngle=NULL;
	g_pengfuncsTable_Post->pfnWriteCoord=NULL;
	g_pengfuncsTable_Post->pfnWriteString=NULL;
	g_pengfuncsTable_Post->pfnWriteEntity=NULL;
	g_pengfuncsTable_Post->pfnMessageEnd=NULL;

	RETURN_META(MRES_IGNORED);
};

void WriteByte_Post(int iValue)
{
	HookedMessage->WriteByte(iValue);
	RETURN_META(MRES_IGNORED);
};

void WriteChar_Post(int iValue)
{
	HookedMessage->WriteChar(iValue);
	RETURN_META(MRES_IGNORED);
};

void WriteShort_Post(int iValue)
{
	HookedMessage->WriteShort(iValue);
	RETURN_META(MRES_IGNORED);
};

void WriteLong_Post(int iValue)
{
	HookedMessage->WriteLong(iValue);
	RETURN_META(MRES_IGNORED);
};

void WriteAngle_Post(float flValue)
{
	HookedMessage->WriteAngle(flValue);
	RETURN_META(MRES_IGNORED);
};

void WriteCoord_Post(float flValue)
{
	HookedMessage->WriteCoord(flValue);
	RETURN_META(MRES_IGNORED);
};

void WriteString_Post(const char *sz)
{
	HookedMessage->WriteString(sz);
	RETURN_META(MRES_IGNORED);
};

void WriteEntity_Post(int iValue)
{
	HookedMessage->WriteEntity(iValue);
	RETURN_META(MRES_IGNORED);
};