mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-17 20:32:35 +03:00
102 lines
1.8 KiB
C
102 lines
1.8 KiB
C
// 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.
|
|
//
|
|
// $Log:$
|
|
//
|
|
// DESCRIPTION:
|
|
// Cheat sequence checking.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
static const char
|
|
rcsid[] = "$Id: m_cheat.c,v 1.1 1997/02/03 21:24:34 b1 Exp $";
|
|
|
|
#include "m_cheat.h"
|
|
|
|
//
|
|
// CHEAT SEQUENCE PACKAGE
|
|
//
|
|
|
|
static int firsttime = 1;
|
|
static unsigned char cheat_xlate_table[256];
|
|
|
|
|
|
//
|
|
// Called in st_stuff module, which handles the input.
|
|
// Returns a 1 if the cheat was successful, 0 if failed.
|
|
//
|
|
int
|
|
cht_CheckCheat
|
|
( cheatseq_t* cht,
|
|
char key )
|
|
{
|
|
int i;
|
|
int rc = 0;
|
|
|
|
if (firsttime)
|
|
{
|
|
firsttime = 0;
|
|
for (i=0;i<256;i++) cheat_xlate_table[i] = SCRAMBLE(i);
|
|
}
|
|
|
|
if (!cht->p)
|
|
cht->p = cht->sequence; // initialize if first time
|
|
|
|
if (*cht->p == 0)
|
|
*(cht->p++) = key;
|
|
else if
|
|
(cheat_xlate_table[(unsigned char)key] == *cht->p) cht->p++;
|
|
else
|
|
cht->p = cht->sequence;
|
|
|
|
if (*cht->p == 1)
|
|
cht->p++;
|
|
else if (*cht->p == 0xff) // end of sequence character
|
|
{
|
|
cht->p = cht->sequence;
|
|
rc = 1;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
void
|
|
cht_GetParam
|
|
( cheatseq_t* cht,
|
|
char* buffer )
|
|
{
|
|
|
|
unsigned char *p, c;
|
|
|
|
p = cht->sequence;
|
|
while (*(p++) != 1);
|
|
|
|
do
|
|
{
|
|
c = *p;
|
|
*(buffer++) = c;
|
|
*(p++) = 0;
|
|
}
|
|
while (c && *p!=0xff );
|
|
|
|
if (*p==0xff)
|
|
*buffer = 0;
|
|
|
|
}
|
|
|
|
|