/**

 * vim: set ts=4 :

 * =============================================================================

 * SourceMod Counter-Strike:Source Extension

 * Copyright (C) 2004-2007 AlliedModders LLC.  All rights reserved.

 * =============================================================================

 *

 * 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: $Id$

 */

#include "extension.h"

#include "RegNatives.h"

#define REGISTER_NATIVE_ADDR(name, code) \

	void *addr; \

	if (!g_pGameConf->GetMemSig(name, &addr)) \

	{ \

		return pContext->ThrowNativeError("Failed to locate function"); \

	} \

	code; \

	g_RegNatives.Register(pWrapper);

inline CBaseEntity *GetCBaseEntity(int num, bool onlyPlayers)

{

	edict_t *pEdict = engine->PEntityOfEntIndex(num);

	if (!pEdict || pEdict->IsFree())

	{

		return NULL;

	}

	if (num > 0 && num < playerhelpers->GetMaxClients())

	{

		IGamePlayer *pPlayer = playerhelpers->GetGamePlayer(pEdict);

		if (!pPlayer || !pPlayer->IsConnected())

		{

			return NULL;

		}

	}

	else if (onlyPlayers)

	{

		return NULL;

	}

	IServerUnknown *pUnk;

	if ((pUnk=pEdict->GetUnknown()) == NULL)

	{

		return NULL;

	}

	return pUnk->GetBaseEntity();

}

// native TF2_Burn(client)

cell_t TF2_Burn(IPluginContext *pContext, const cell_t *params)

{

	static ICallWrapper *pWrapper = NULL;

	// CTFPlayerShared::Burn(CTFPlayer*)

	if (!pWrapper)

	{

		REGISTER_NATIVE_ADDR("Burn", 

			PassInfo pass[1]; \

			pass[0].flags = PASSFLAG_BYVAL; \

			pass[0].size = sizeof(CBaseEntity *); \

			pass[0].type = PassType_Basic; \

			pWrapper = g_pBinTools->CreateCall(addr, CallConv_ThisCall, NULL, pass, 1))

	}

	CBaseEntity *pEntity;

	if (!(pEntity=GetCBaseEntity(params[1], true)))

	{

		return pContext->ThrowNativeError("Client index %d is not valid", params[1]);

	}

	void *obj = (void *)((uint8_t *)pEntity + playerSharedOffset->GetOffset());

	unsigned char vstk[sizeof(void *) + sizeof(CBaseEntity *)];

	unsigned char *vptr = vstk;

	*(void **)vptr = obj;

	vptr += sizeof(void *);

	*(CBaseEntity **)vptr = pEntity;

	pWrapper->Execute(vstk, NULL);

	return 1;

}

// native TF2_Invuln(client, bool:something, bool:anothersomething)

cell_t TF2_Invuln(IPluginContext *pContext, const cell_t *params)

{

	static ICallWrapper *pWrapper = NULL;

	//CTFPlayerShared::SetInvulnerable(bool, bool)

	if (!pWrapper)

	{

		REGISTER_NATIVE_ADDR("Invuln", 

			PassInfo pass[2]; \

			pass[0].flags = PASSFLAG_BYVAL; \

			pass[0].size = sizeof(bool); \

			pass[0].type = PassType_Basic; \

			pass[1].flags = PASSFLAG_BYVAL; \

			pass[1].size = sizeof(bool); \

			pass[1].type = PassType_Basic; \

			pWrapper = g_pBinTools->CreateCall(addr, CallConv_ThisCall, NULL, pass, 2))

	}

	CBaseEntity *pEntity;

	if (!(pEntity=GetCBaseEntity(params[1], true)))

	{

		return pContext->ThrowNativeError("Client index %d is not valid", params[1]);

	}

	void *obj = (void *)((uint8_t *)pEntity + playerSharedOffset->GetOffset());

	unsigned char vstk[sizeof(void *) + 2*sizeof(bool)];

	unsigned char *vptr = vstk;

	*(void **)vptr = obj;

	vptr += sizeof(bool);

	*(bool *)vptr = !!params[2];

	vptr += sizeof(bool);

	*(bool *)vptr = !!params[3];

	pWrapper->Execute(vstk, NULL);

	return 1;

}

sp_nativeinfo_t g_TFNatives[] = 

{

	{"TF2_Burn",						TF2_Burn},

	{"TF2_Invuln",					TF2_Invuln},

	{NULL,							NULL}

};