/**

 * vim: set ts=4 :

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

 * SourceMod Team Fortress 2 Extension

 * Copyright (C) 2004-2008 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 "teleporter.h"

CDetour *canPlayerTeleportDetour = NULL;

IForward *g_teleportForward = NULL;

class CTFPlayer;

DETOUR_DECL_MEMBER1(CanPlayerBeTeleported, bool, CTFPlayer *, pPlayer)

{

	bool origCanTeleport = DETOUR_MEMBER_CALL(CanPlayerBeTeleported)(pPlayer);

	cell_t teleporterCell = gamehelpers->EntityToBCompatRef((CBaseEntity *)this);

	cell_t playerCell = gamehelpers->EntityToBCompatRef((CBaseEntity *)pPlayer);

	if (!g_teleportForward)

	{

		g_pSM->LogMessage(myself, "Teleport forward is invalid");

		return origCanTeleport;

	}

	cell_t returnValue = origCanTeleport ? 1 : 0;

	g_teleportForward->PushCell(playerCell); // client

	g_teleportForward->PushCell(teleporterCell); // teleporter

	g_teleportForward->PushCellByRef(&returnValue); // return value

	cell_t result = 0;

	g_teleportForward->Execute(&result);

	if (result > Pl_Continue)

	{

		// plugin wants to override the game (returned something other than Plugin_Continue)

		return returnValue == 1;

	}

	else

	{

		return origCanTeleport; // let the game decide

	}

}

bool InitialiseTeleporterDetour()

{

	canPlayerTeleportDetour = DETOUR_CREATE_MEMBER(CanPlayerBeTeleported, "CanPlayerTeleport");

	if (canPlayerTeleportDetour != NULL)

	{

		canPlayerTeleportDetour->EnableDetour();

		return true;

	}

	g_pSM->LogError(myself, "Teleport forward could not be initialized - Disabled hook");

	return false;

}

void RemoveTeleporterDetour()

{

	if (canPlayerTeleportDetour != NULL)

	{

		canPlayerTeleportDetour->Destroy();

		canPlayerTeleportDetour = NULL;

	}

}