/**

 * vim: set ts=4 :

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

 * SourceMod SDKTools 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 "vhelpers.h"

CallHelper s_Teleport;

CallHelper s_GetVelocity;

bool SetupTeleport()

{

	if (s_Teleport.setup)

	{

		return s_Teleport.supported;

	}

	/* Setup Teleport */

	int offset;

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

	{

		PassInfo info[3];

		info[0].flags = info[1].flags = info[2].flags = PASSFLAG_BYVAL;

		info[0].size = info[1].size = info[2].size = sizeof(void *);

		info[0].type = info[1].type = info[2].type = PassType_Basic;

		s_Teleport.call = g_pBinTools->CreateVCall(offset, 0, 0, NULL, info, 3);

		if (s_Teleport.call)

		{

			s_Teleport.supported = true;

		}

	}

	s_Teleport.setup = true;

	return s_Teleport.supported;

}

void Teleport(CBaseEntity *pEntity, Vector *origin, QAngle *ang, Vector *velocity)

{

	unsigned char params[sizeof(void *) * 4];

	unsigned char *vptr = params;

	*(CBaseEntity **)vptr = pEntity;

	vptr += sizeof(CBaseEntity *);

	*(Vector **)vptr = origin;

	vptr += sizeof(Vector *);

	*(QAngle **)vptr = ang;

	vptr += sizeof(QAngle *);

	*(Vector **)vptr = velocity;

	s_Teleport.call->Execute(params, NULL);

}

bool IsTeleportSupported()

{

	return SetupTeleport();

}

bool SetupGetVelocity()

{

	if (s_GetVelocity.setup)

	{

		return s_GetVelocity.supported;

	}

	int offset;

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

	{

		PassInfo info[2];

		info[0].flags = info[1].flags = PASSFLAG_BYVAL;

		info[0].size = info[1].size = sizeof(void *);

		info[0].type = info[1].type = PassType_Basic;

		s_GetVelocity.call = g_pBinTools->CreateVCall(offset, 0, 0, NULL, info, 2);

		if (s_GetVelocity.call)

		{

			s_GetVelocity.supported = true;

		}

	}

	s_GetVelocity.setup = true;

	return s_GetVelocity.supported;

}

void GetVelocity(CBaseEntity *pEntity, Vector *velocity, AngularImpulse *angvelocity)

{

	unsigned char params[sizeof(void *) * 3];

	unsigned char *vptr = params;

	*(CBaseEntity **)vptr = pEntity;

	vptr += sizeof(CBaseEntity *);

	*(Vector **)vptr = velocity;

	vptr += sizeof(Vector *);

	*(AngularImpulse **)vptr = angvelocity;

	s_GetVelocity.call->Execute(params, NULL);

}

bool IsGetVelocitySupported()

{

	return SetupGetVelocity();

}

void ShutdownHelpers()

{

	s_Teleport.Shutdown();

	s_GetVelocity.Shutdown();

}