// 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__

#ifdef OSX
#include "/usr/include/dirent.h"
#endif

#include <dirent.h>

#include "d_ticcmd.h"
#include "d_event.h"

extern "C"
{
    extern byte CPUFamily, CPUModel, CPUStepping;
}

// 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 (size_t *size);


// Called by D_DoomLoop,
// returns current time in tics.
extern int (*I_GetTime) (void);

// like I_GetTime, except it waits for a new tic before returning
extern int (*I_WaitForTic) (int);

int I_GetTimePolled (void);
int I_GetTimeFake (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 STACK_ARGS 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 STACK_ARGS I_Error (const char *error, ...);
void STACK_ARGS I_FatalError (const char *error, ...);

void addterm (void (STACK_ARGS *func)(void), const char *name);
#define atterm(t) addterm (t, #t)
void popterm ();

// Print a console string
void I_PrintStr (int x, const char *str, int count, BOOL scroll);

// Set the title string of the startup window
void I_SetTitleString (const char *title);


// In i_input.c. Used to release control of the
// mouse to the user when the game is paused in
// windowed modes.
void I_PauseMouse (void);
void I_ResumeMouse (void);

// [RH] Returns millisecond-accurate time
QWORD I_MSTime (void);

// [RH] Title string to display at bottom of console during startup
extern char DoomStartupTitle[256];

void I_FinishClockCalibration ();


// Directory searching routines

typedef struct
{
    int count;
    struct dirent **namelist;
    int current;
} findstate_t;

long I_FindFirst (char *filespec, findstate_t *fileinfo);
int I_FindNext (long handle, findstate_t *fileinfo);
int I_FindClose (long handle);
int I_FindAttr (findstate_t *fileinfo); 

#define I_FindName(a)	((a)->namelist[(a)->current]->d_name)

#define FA_RDONLY	1
#define FA_HIDDEN	2
#define FA_SYSTEM	4
#define FA_DIREC	8
#define FA_ARCH		16

#endif
