// Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // // $Id: m_cheat.c 162 2005-10-04 21:41:42Z fraggle $ // // Copyright(C) 1993-1996 Id Software, Inc. // Copyright(C) 2005 Simon Howard // // This program 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 2 // of the License, or (at your option) any later version. // // This program 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 this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA // 02111-1307, USA. // // $Log$ // Revision 1.3 2005/10/04 21:41:42 fraggle // Rewrite cheats code. Add dehacked cheat replacement. // // Revision 1.2 2005/07/23 16:44:55 fraggle // Update copyright to GNU GPL // // Revision 1.1.1.1 2005/07/23 16:20:31 fraggle // Initial import // // // DESCRIPTION: // Cheat sequence checking. // //----------------------------------------------------------------------------- static const char rcsid[] = "$Id: m_cheat.c 162 2005-10-04 21:41:42Z fraggle $"; #include #include "doomtype.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 ) { // if we make a short sequence on a cheat with parameters, this // will not work in vanilla doom. behave the same. if (cht->parameter_chars > 0 && strlen(cht->sequence) < cht->sequence_len) return false; if (cht->chars_read < strlen(cht->sequence)) { // still reading characters from the cheat code // and verifying. reset back to the beginning // if a key is wrong if (key == cht->sequence[cht->chars_read]) ++cht->chars_read; else cht->chars_read = 0; cht->param_chars_read = 0; } else if (cht->param_chars_read < cht->parameter_chars) { // we have passed the end of the cheat sequence and are // entering parameters now cht->parameter_buf[cht->param_chars_read] = key; ++cht->param_chars_read; } if (cht->chars_read >= strlen(cht->sequence) && cht->param_chars_read >= cht->parameter_chars) { cht->chars_read = cht->param_chars_read = 0; return true; } // cheat not matched yet return false; } void cht_GetParam ( cheatseq_t* cht, char* buffer ) { memcpy(buffer, cht->parameter_buf, cht->parameter_chars); }