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// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id:$
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// DESCRIPTION:
// System specific interface stuff.
//
//-----------------------------------------------------------------------------
#ifndef __I_SYSTEM__
#define __I_SYSTEM__
#include "d_ticcmd.h"
#include "d_event.h"
#ifdef __GNUG__
#pragma interface
#endif
// Called by DoomMain.
void I_Init (void);
// Called by startup code
// to get the ammount of memory to malloc
// for the zone management.
byte* I_ZoneBase (int *size);
// Called by D_DoomLoop,
// returns current time in tics.
int I_GetTime (void);
//
// Called by D_DoomLoop,
// called before processing any tics in a frame
// (just after displaying a frame).
// Time consuming syncronous operations
// are performed here (joystick reading).
// Can call D_PostEvent.
//
void I_StartFrame (void);
//
// Called by D_DoomLoop,
// called before processing each tic in a frame.
// Quick syncronous operations are performed here.
// Can call D_PostEvent.
void I_StartTic (void);
// Asynchronous interrupt functions should maintain private queues
// that are read by the synchronous functions
// to be converted into events.
// Either returns a null ticcmd,
// or calls a loadable driver to build it.
// This ticcmd will then be modified by the gameloop
// for normal input.
ticcmd_t* I_BaseTiccmd (void);
// Called by M_Responder when quit is selected.
// Clean exit, displays sell blurb.
void I_Quit (void);
// Allocates from low memory under dos,
// just mallocs under unix
byte* I_AllocLow (int length);
void I_Tactile (int on, int off, int total);
void I_Error (char *error, ...);
int I_HaveFile(char *fname);
int I_FileSize(int handle);
int I_FileRead (int handle, char *buf, int len);
void I_FilePos(int handle, int pos);
int I_FileOpenRead(char *fname);
void I_FileClose(int handle);
void *I_Realloc(void *p, int nsize);
#endif
//-----------------------------------------------------------------------------
//
// $Log:$
//
//-----------------------------------------------------------------------------
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