/**
 * vim: set ts=4 :
 * ===============================================================
 * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.
 * ===============================================================
 *
 *  This file is part of the SourceMod/SourcePawn SDK.  This file may only be used 
 * or modified under the Terms and Conditions of its License Agreement, which is found 
 * in LICENSE.txt.  The Terms and Conditions for making SourceMod extensions/plugins 
 * may change at any time.  To view the latest information, see:
 *   http://www.sourcemod.net/license.php
 *
 * Version: $Id$
 */

#if defined _sdktools_included
  #endinput
#endif
#define _sdktools_included

#include <core>
#include <sdktools_functions>
#include <sdktools_tempents>
#include <sdktools_tempents_stocks>
#if !defined SDKTOOLS_DISABLE_SOUNDAPI
#include <sdktools_sound>
#endif

enum SDKCallType
{
	SDKCall_Static,		/**< Static call */
	SDKCall_Entity,		/**< CBaseEntity call */
	SDKCall_Player,		/**< CBasePlayer call */
	SDKCall_GameRules,	/**< CGameRules call */
};

enum SDKLibrary
{
	SDKLibrary_Server,	/**< server.dll/server_i486.so */
	SDKLibrary_Engine,	/**< engine.dll/engine_*.so */
};

enum SDKFuncConfSource
{
	SDKConf_Virtual = 0,	/**< Read a virtual index from the Offsets section */
	SDKConf_Signature = 1,	/**< Read a signature from the Signatures section */
};

enum SDKType
{
	SDKType_CBaseEntity,	/**< CBaseEntity (always as pointer) */
	SDKType_CBasePlayer,	/**< CBasePlayer (always as pointer) */
	SDKType_Vector,			/**< Vector (pointer, byval, or byref) */
	SDKType_QAngle,			/**< QAngles (pointer, byval, or byref) */
	SDKType_PlainOldData,	/**< Integer/generic data <=32bit (any) */
	SDKType_Float,			/**< Float (any) */
	SDKType_Edict,			/**< edict_t (always as pointer) */
	SDKType_String,			/**< NULL-terminated string (always as pointer) */
	SDKType_Bool,			/**< Boolean (any) */
};

enum SDKPassMethod
{
	SDKPass_Pointer,		/**< Pass as a pointer */
	SDKPass_Plain,			/**< Pass as plain data */
	SDKPass_ByValue,		/**< Pass an object by value */
	SDKPass_ByRef,			/**< Pass an object by reference */
};

#define VDECODE_FLAG_ALLOWNULL		(1<<0)		/**< Allow NULL for pointers */
#define VDECODE_FLAG_ALLOWNOTINGAME	(1<<1)		/**< Allow players not in game */
#define VDECODE_FLAG_ALLOWWORLD		(1<<2)		/**< Allow World entity */
#define VDECODE_FLAG_BYREF			(1<<3)		/**< Floats/ints by reference */

#define VENCODE_FLAG_COPYBACK		(1<<0)		/**< Copy back data once done */

/**
 * Starts the preparation of an SDK call.
 *
 * @param type			Type of function call this will be.
 * @noreturn
 */
native StartPrepSDKCall(SDKCallType:type);

/**
 * Sets the virtual index of the SDK call if it is virtual.
 *
 * @param vtblidx		Virtual table index.
 * @noreturn
 */
native PrepSDKCall_SetVirtual(vtblidx);

/**
 * Finds an address in a library and sets it as the address to use for the SDK call.
 *
 * @param lib			Library to use.
 * @param signature		Binary data to search for in the library.  If it starts with '@',
 *						the bytes parameter is ignored and the signature is interpreted
 *						as a symbol lookup in the library.
 * @param bytes			Number of bytes in the binary search string.
 * @return				True on success, false if nothing was found.
 */
native bool:PrepSDKCall_SetSignature(SDKLibrary:lib, const String:signature[], bytes);

/**
 * Finds an address or virtual function index in a GameConfig file and sets it as
 * the calling information for the SDK call.
 *
 * @param gameconf		GameConfig Handle, or INVALID_HANDLE to use sdktools.games.txt.
 * @param source		Whether to look in Offsets or Signatures.
 * @param name			Name of the property to find.
 * @return				True on success, false if nothing was found.
 */
native bool:PrepSDKCall_SetFromConf(Handle:gameconf, SDKFuncConfSource:source, const String:name[]);

/**
 * Sets the return information of an SDK call.  Do not call this if there is no return data.
 * This must be called if there is a return value (i.e. it is not necessarily safe to ignore 
 * the data).
 *
 * @param type			Data type to convert to/from.
 * @param pass			How the data is passed in C++.
 * @param decflags		Flags on decoding from the plugin to C++.
 * @param encflags		Flags on encoding from C++ to the plugin.
 * @noreturn
 */
native PrepSDKCall_SetReturnInfo(SDKType:type, SDKPassMethod:pass, decflags=0, encflags=0);

/**
 * Adds a parameter to the calling convention.  This should be called in normal ascending order.
 *
 * @param type			Data type to convert to/from.
 * @param pass			How the data is passed in C++.
 * @param decflags		Flags on decoding from the plugin to C++.
 * @param encflags		Flags on encoding from C++ to the plugin.
 * @noreturn
 */
native PrepSDKCall_AddParameter(SDKType:type, SDKPassMethod:pass, decflags=0, encflags=0);

/**
 * Finalizes an SDK call preparation and returns the resultant Handle.
 *
 * @return				A new SDKCall Handle on success, or INVALID_HANDLE on failure.
 */
native Handle:EndPrepSDKCall();

/**
 * Calls an SDK function with the given parameters.
 *
 * If the call type is Entity or Player, the index MUST ALWAYS be the FIRST parameter passed.
 * If the call type is GameRules, then nothing special needs to be passed.
 * If the return value is a Vector or QAngles, the SECOND parameter must be a Float[3].
 * If the return value is a string, the THIRD parameter must be a String buffer, and the
 *  FOURTH parameter must be the maximum length.
 * All parameters must be passed after the above is followed.  Failure to follow these 
 *  rules will result in crashes or wildly unexpected behavior!
 *
 * If the return value is a float or integer, the return value will be this value.
 * If the return value is a CBaseEntity, CBasePlayer, or edict, the return value will
 *   always be the entity index, or -1 for NULL.
 *
 * @param call			SDKCall Handle.
 * @param ...			Call Parameters.
 * @return				Simple return value, if any.
 * @error				Invalid Handle or internal decoding error.
 */
native any:SDKCall(Handle:call, any:...);


/**
 * Do not edit below this line!
 */
public Extension:__ext_sdktools = 
{
	name = "SDKTools",
	file = "sdktools.ext",
#if defined AUTOLOAD_EXTENSIONS
	autoload = 1,
#else
	autoload = 0,
#endif
#if defined REQUIRE_EXTENSIONS
	required = 1,
#else
	required = 0,
#endif
};