DOOM-3-BFG/doomclassic/doom/m_cheat.cpp

/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  

Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#include "Precompiled.h"
#include "globaldata.h"

#include "m_cheat.h"

//
// CHEAT SEQUENCE PACKAGE
//



//
// 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 )
{
	return 0; // ALAN : Checking the cheats CRASHES??
    int i;
    int rc = 0;

    if (::g->firsttime)
    {
	::g->firsttime = 0;
	for (i=0;i<256;i++) ::g->cheat_xlate_table[i] = SCRAMBLE(i);
    }

    if (!cht->p)
    {
	cht->p = ::g->cheatbuffer + ::g->usedcheatbuffer;
	int isize = 0;
	while(cht->sequence[isize] != 0xff) cht->p[isize] = cht->sequence[isize];
	cht->p[isize] = 0xff;
	::g->usedcheatbuffer += isize;
	::g->usedcheatbuffer ++;
    }

    if (*cht->p == 0)
	*(cht->p++) = key;
    else if
	(::g->cheat_xlate_table[(unsigned char)key] == *cht->p) cht->p++;
    else
    {
	int isize = 0;
	while(cht->sequence[isize] != 0xff) cht->p[isize] = cht->sequence[isize];
	cht->p[isize] = 0xff;
    }

    if (*cht->p == 1)
	cht->p++;
    else if (*cht->p == 0xff) // end of sequence character
    {
	int isize = 0;
	while(cht->sequence[isize] != 0xff) cht->p[isize] = cht->sequence[isize];
	cht->p[isize] = 0xff;	
	rc = 1;
    }

    return rc;
}

void
cht_GetParam
( cheatseq_t*	cht,
  char*		buffer )
{


    unsigned char pb[16];
	unsigned char *p;
    unsigned char c;

	int isize = 0;

	while(cht->sequence[isize] != 0xff) pb[isize] = cht->sequence[isize];
	pb[isize] = 0xff;
	p = &pb[0];

    while (*(p++) != 1);
    
    do
    {
	c = *p;
	*(buffer++) = c;
	*(p++) = 0;
    }
    while (c && *p!=0xff );

    if (*p==0xff)
	*buffer = 0;


}