/**

* vim: set ts=4 :

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

* SourceMod SDKTools 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 "hooks.h"

#include "extension.h"

CHookManager g_Hooks;

static bool PRCH_enabled = false;

static bool PRCH_used = false;

SH_DECL_MANUALHOOK2_void(PlayerRunCmdHook, 0, 0, 0, CUserCmd *, IMoveHelper *);

CHookManager::CHookManager()

{

	m_usercmdsFwd = NULL;

}

void CHookManager::Initialize()

{

	int offset;

	if (g_pGameConf->GetOffset("PlayerRunCmd", &offset))

	{

		SH_MANUALHOOK_RECONFIGURE(PlayerRunCmdHook, offset, 0, 0);

		PRCH_enabled = true;

	}

	plsys->AddPluginsListener(this);

	m_usercmdsFwd = forwards->CreateForward("OnPlayerRunCmd", ET_Event, 6, NULL, Param_Cell, Param_CellByRef, Param_CellByRef, Param_Array, Param_Array, Param_CellByRef);

}

void CHookManager::Shutdown()

{

	forwards->ReleaseForward(m_usercmdsFwd);

	plsys->RemovePluginsListener(this);

}

void CHookManager::OnClientPutInServer(int client)

{

	if (!PRCH_enabled)

		return;

	if (!PRCH_used)

		return;

	edict_t *pEdict = PEntityOfEntIndex(client);

	if (!pEdict)

	{

		return;

	}

	IServerUnknown *pUnknown = pEdict->GetUnknown();

	if (!pUnknown)

	{

		return;

	}

	CBaseEntity *pEntity = pUnknown->GetBaseEntity();

	if (!pEntity)

	{

		return;

	}

	SH_ADD_MANUALHOOK_MEMFUNC(PlayerRunCmdHook, pEntity, this, &CHookManager::PlayerRunCmd, false);

}

void CHookManager::OnClientDisconnecting(int client)

{

	if (!PRCH_enabled)

		return;

	if (!PRCH_used)

		return;

	edict_t *pEdict = PEntityOfEntIndex(client);

	if (!pEdict)

	{

		return;

	}

	IServerUnknown *pUnknown = pEdict->GetUnknown();

	if (!pUnknown)

	{

		return;

	}

	CBaseEntity *pEntity = pUnknown->GetBaseEntity();

	if (!pEntity)

	{

		return;

	}

	SH_REMOVE_MANUALHOOK_MEMFUNC(PlayerRunCmdHook, pEntity, this, &CHookManager::PlayerRunCmd, false);

}

void CHookManager::PlayerRunCmd(CUserCmd *ucmd, IMoveHelper *moveHelper)

{

	if (m_usercmdsFwd->GetFunctionCount() == 0)

	{

		RETURN_META(MRES_IGNORED);

	}

	CBaseEntity *pEntity = META_IFACEPTR(CBaseEntity);

	if (!pEntity)

	{

		RETURN_META(MRES_IGNORED);

	}

	edict_t *pEdict = gameents->BaseEntityToEdict(pEntity);

	if (!pEdict)

	{

		RETURN_META(MRES_IGNORED);

	}

	int client = IndexOfEdict(pEdict);

	cell_t result = 0;

	/* Impulse is a byte so we copy it back manually */

	cell_t impulse = ucmd->impulse;

	cell_t vel[3] = {sp_ftoc(ucmd->forwardmove), sp_ftoc(ucmd->sidemove), sp_ftoc(ucmd->upmove)};

	cell_t angles[3] = {sp_ftoc(ucmd->viewangles.x), sp_ftoc(ucmd->viewangles.y), sp_ftoc(ucmd->viewangles.z)};

	m_usercmdsFwd->PushCell(client);

	m_usercmdsFwd->PushCellByRef(&ucmd->buttons);

	m_usercmdsFwd->PushCellByRef(&impulse);

	m_usercmdsFwd->PushArray(vel, 3, SM_PARAM_COPYBACK);

	m_usercmdsFwd->PushArray(angles, 3, SM_PARAM_COPYBACK);

	m_usercmdsFwd->PushCellByRef(&ucmd->weaponselect);

	m_usercmdsFwd->Execute(&result);

	ucmd->impulse = impulse;

	ucmd->forwardmove = sp_ctof(vel[0]);

	ucmd->sidemove = sp_ctof(vel[1]);

	ucmd->upmove = sp_ctof(vel[2]);

	ucmd->viewangles.x = sp_ctof(angles[0]);

	ucmd->viewangles.y = sp_ctof(angles[1]);

	ucmd->viewangles.z = sp_ctof(angles[2]);

	if (result == Pl_Handled)

	{

		RETURN_META(MRES_SUPERCEDE);

	}

	RETURN_META(MRES_IGNORED);

}

void CHookManager::OnPluginLoaded(IPlugin *plugin)

{

	if (!PRCH_enabled)

		return;

	if (PRCH_used)

		return;

	if (!m_usercmdsFwd->GetFunctionCount())

		return;

	PRCH_used = true;

	int MaxClients = playerhelpers->GetMaxClients();

	for (int i = 1; i <= MaxClients; i++)

	{

		if (playerhelpers->GetGamePlayer(i)->IsInGame())

		{

			OnClientPutInServer(i);

		}

	}

}

void CHookManager::OnPluginUnloaded(IPlugin *plugin)

{

	if (!PRCH_enabled)

		return;

	if (!PRCH_used)

		return;

	if (m_usercmdsFwd->GetFunctionCount())

		return;

	int MaxClients = playerhelpers->GetMaxClients();

	for (int i = 1; i <= MaxClients; i++)

	{

		if (playerhelpers->GetGamePlayer(i)->IsInGame())

		{

			OnClientDisconnecting(i);

		}

	}

	PRCH_used = false;

}