/**

 * 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 "extension.h"

#include <datamap.h>

#define SIZEOF_VARIANT_T		20

ICallWrapper *g_pAcceptInput = NULL;

unsigned char g_Variant_t[SIZEOF_VARIANT_T] = {0};

#define ENTINDEX_TO_CBASEENTITY(ref, buffer) \

	buffer = gamehelpers->ReferenceToEntity(ref); \

	if (!buffer) \

	{ \

		return pContext->ThrowNativeError("Entity %d (%d) is not a CBaseEntity", gamehelpers->ReferenceToIndex(ref), ref); \

	}

/* Hack to init the variant_t object for the first time */

class VariantFirstTimeInit

{

public:

	VariantFirstTimeInit()

	{

		*(unsigned int *)(&g_Variant_t[12]) = INVALID_EHANDLE_INDEX;

	}

} g_VariantFirstTimeInit;

inline void _init_variant_t()

{

	unsigned char *vptr = g_Variant_t;

	*(int *)vptr = 0;

	vptr += sizeof(int)*3;

	*(unsigned long *)vptr = INVALID_EHANDLE_INDEX;

	vptr += sizeof(unsigned long);

	*(fieldtype_t *)vptr = FIELD_VOID;

}

static cell_t AcceptEntityInput(IPluginContext *pContext, const cell_t *params)

{

	if (!g_pAcceptInput)

	{

		int offset;

		if (!g_pGameConf->GetOffset("AcceptInput", &offset))

		{

			return pContext->ThrowNativeError("\"AcceptEntityInput\" not supported by this mod");

		}

		PassInfo pass[6];

		pass[0].type = PassType_Basic;

		pass[0].flags = PASSFLAG_BYVAL;

		pass[0].size = sizeof(const char *);

		pass[1].type = pass[2].type = PassType_Basic;

		pass[1].flags = pass[2].flags = PASSFLAG_BYVAL;

		pass[1].size = pass[2].size = sizeof(CBaseEntity *);

		pass[3].type = PassType_Object;

		pass[3].flags = PASSFLAG_BYVAL|PASSFLAG_OCTOR|PASSFLAG_ODTOR|PASSFLAG_OASSIGNOP;

		pass[3].size = SIZEOF_VARIANT_T;

		pass[4].type = PassType_Basic;

		pass[4].flags = PASSFLAG_BYVAL;

		pass[4].size = sizeof(int);

		pass[5].type = PassType_Basic;

		pass[5].flags = PASSFLAG_BYVAL;

		pass[5].size = sizeof(bool);

		if (!(g_pAcceptInput=g_pBinTools->CreateVCall(offset, 0, 0, &pass[5], pass, 5)))

		{

			pContext->ThrowNativeError("\"AcceptEntityInput\" wrapper failed to initialized");

		}

	}

	CBaseEntity *pActivator, *pCaller, *pDest;

	char *inputname;

	unsigned char vstk[sizeof(void *) + sizeof(const char *) + sizeof(CBaseEntity *)*2 + SIZEOF_VARIANT_T + sizeof(int)];

	unsigned char *vptr = vstk;

	ENTINDEX_TO_CBASEENTITY(params[1], pDest);

	pContext->LocalToString(params[2], &inputname);

	if (params[3] == -1)

	{

		pActivator = NULL;

	} else {

		ENTINDEX_TO_CBASEENTITY(params[3], pActivator);

	}

	if (params[4] == -1)

	{

		pCaller = NULL;

	} else {

		ENTINDEX_TO_CBASEENTITY(params[4], pCaller);

	}

	*(void **)vptr = pDest;

	vptr += sizeof(void *);

	*(const char **)vptr = inputname;

	vptr += sizeof(const char *);

	*(CBaseEntity **)vptr = pActivator;

	vptr += sizeof(CBaseEntity *);

	*(CBaseEntity **)vptr = pCaller;

	vptr += sizeof(CBaseEntity *);

	memcpy(vptr, g_Variant_t, SIZEOF_VARIANT_T);

	vptr += SIZEOF_VARIANT_T;

	*(int *)vptr = params[5];

	bool ret;

	g_pAcceptInput->Execute(vstk, &ret);

	_init_variant_t();

	return (ret) ? 1 : 0;

}

static cell_t SetVariantBool(IPluginContext *pContext, const cell_t *params)

{

	unsigned char *vptr = g_Variant_t;

	*(bool *)vptr = (params[1]) ? true : false;

	vptr += sizeof(int)*3 + sizeof(unsigned long);

	*(fieldtype_t *)vptr = FIELD_BOOLEAN;

	return 1;

}

static cell_t SetVariantString(IPluginContext *pContext, const cell_t *params)

{

	char *str;

	unsigned char *vptr = g_Variant_t;

	pContext->LocalToString(params[1], &str);

	*(string_t *)vptr = MAKE_STRING(str);

	vptr += sizeof(int)*3 + sizeof(unsigned long);

	*(fieldtype_t *)vptr = FIELD_STRING;

	return 1;

}

static cell_t SetVariantInt(IPluginContext *pContext, const cell_t *params)

{

	unsigned char *vptr = g_Variant_t;

	*(int *)vptr = params[1];

	vptr += sizeof(int)*3 + sizeof(unsigned long);

	*(fieldtype_t *)vptr = FIELD_INTEGER;

	return 1;

}

static cell_t SetVariantFloat(IPluginContext *pContext, const cell_t *params)

{

	unsigned char *vptr = g_Variant_t;

	*(float *)vptr = sp_ctof(params[1]);

	vptr += sizeof(int)*3 + sizeof(unsigned long);

	*(fieldtype_t *)vptr = FIELD_FLOAT;

	return 1;

}

static cell_t SetVariantVector3D(IPluginContext *pContext, const cell_t *params)

{

	cell_t *val;

	unsigned char *vptr = g_Variant_t;

	pContext->LocalToPhysAddr(params[1], &val);

	*(float *)vptr = sp_ctof(val[0]);

	vptr += sizeof(float);

	*(float *)vptr = sp_ctof(val[1]);

	vptr += sizeof(float);

	*(float *)vptr = sp_ctof(val[2]);

	vptr += sizeof(float) + sizeof(unsigned long);

	*(fieldtype_t *)vptr = FIELD_VECTOR;

	return 1;

}

static cell_t SetVariantPosVector3D(IPluginContext *pContext, const cell_t *params)

{

	cell_t *val;

	unsigned char *vptr = g_Variant_t;

	pContext->LocalToPhysAddr(params[1], &val);

	*(float *)vptr = sp_ctof(val[0]);

	vptr += sizeof(float);

	*(float *)vptr = sp_ctof(val[1]);

	vptr += sizeof(float);

	*(float *)vptr = sp_ctof(val[2]);

	vptr += sizeof(float) + sizeof(unsigned long);

	*(fieldtype_t *)vptr = FIELD_POSITION_VECTOR;

	return 1;

}

static cell_t SetVariantColor(IPluginContext *pContext, const cell_t *params)

{

	cell_t *val;

	unsigned char *vptr = g_Variant_t;

	pContext->LocalToPhysAddr(params[1], &val);

	*(unsigned char *)vptr = val[0];

	vptr += sizeof(unsigned char);

	*(unsigned char *)vptr = val[1];

	vptr += sizeof(unsigned char);

	*(unsigned char *)vptr = val[2];

	vptr += sizeof(unsigned char);

	*(unsigned char *)vptr = val[3];

	vptr += sizeof(unsigned char) + sizeof(int)*2 + sizeof(unsigned long);

	*(fieldtype_t *)vptr = FIELD_COLOR32;

	return 1;

}

static cell_t SetVariantEntity(IPluginContext *pContext, const cell_t *params)

{

	CBaseEntity *pEntity;

	unsigned char *vptr = g_Variant_t;

	CBaseHandle bHandle;

	ENTINDEX_TO_CBASEENTITY(params[1], pEntity);

	bHandle = reinterpret_cast<IHandleEntity *>(pEntity)->GetRefEHandle();

	vptr += sizeof(int)*3;

	*(unsigned long *)vptr = (unsigned long)(bHandle.ToInt());

	vptr += sizeof(unsigned long);

	*(fieldtype_t *)vptr = FIELD_EHANDLE;

	return 1;

}

sp_nativeinfo_t g_EntInputNatives[] =

{

	{"AcceptEntityInput",			AcceptEntityInput},

	{"SetVariantBool",				SetVariantBool},

	{"SetVariantString",			SetVariantString},

	{"SetVariantInt",				SetVariantInt},

	{"SetVariantFloat",				SetVariantFloat},

	{"SetVariantVector3D",			SetVariantVector3D},

	{"SetVariantPosVector3D",		SetVariantPosVector3D},

	{"SetVariantColor",				SetVariantColor},

	{"SetVariantEntity",			SetVariantEntity},

	{NULL,							NULL},

};