195 lines
5.4 KiB
C++
195 lines
5.4 KiB
C++
/*
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* QT AGI Studio :: Copyright (C) 2000 Helen Zommer
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*
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* Almost all of this code was adapted from the Windows AGI Studio
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* developed by Peter Kelly.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include "game.h"
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#include "words.h"
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#include "object.h"
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#include "menu.h"
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#include <stdio.h>
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#include <sys/types.h>
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#ifndef _WIN32
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#include <unistd.h>
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#endif
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#include <sys/stat.h>
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#include <stdlib.h>
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//****************************************************
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//list of inventory objects
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ObjList::ObjList()
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{
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}
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//****************************************************
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bool ObjList::GetItems()
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{
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string ThisItemName;
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int NamePos;
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int CurrentItem,ItemNamesStart,ThisNameStart;
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byte lsbyte,msbyte;
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CurrentItem = 0;
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lsbyte = ResourceData.Data[0];
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msbyte = ResourceData.Data[1];
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ItemNamesStart = msbyte * 256 + lsbyte + 3;
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MaxScreenObjects = ResourceData.Data[2];
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do{
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lsbyte = ResourceData.Data[3+CurrentItem*3];
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msbyte = ResourceData.Data[3+CurrentItem*3+1];
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ThisNameStart = (msbyte<<8)| (lsbyte + 3);
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RoomNum[CurrentItem] = ResourceData.Data[3+CurrentItem*3+2];
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NamePos = ThisNameStart;
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if (NamePos > ResourceData.Size)return false; //object name past end of file
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ThisItemName = "";
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do{
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if(ResourceData.Data[NamePos] > 0){
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ThisItemName += ResourceData.Data[NamePos];
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NamePos++;
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}
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}while(ResourceData.Data[NamePos] != 0 && NamePos < ResourceData.Size);
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ItemNames.add(ThisItemName);
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CurrentItem++;
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}while((CurrentItem+1)*3 < ItemNamesStart && CurrentItem < MaxItems);
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return true;
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}
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//****************************************************
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void ObjList::XORData ()
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{
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for(int i=0;i<ResourceData.Size;i++){
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ResourceData.Data[i] ^= EncryptionKey[i%11];
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}
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}
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//****************************************************
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int ObjList::read(char *filename,bool FileIsEncrypted)
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{
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FILE *fptr=fopen(filename,"rb");
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if(fptr==NULL){
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menu->errmes("Error opening file %s",filename);
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return 1;
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}
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struct stat buf;
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fstat(fileno(fptr),&buf);
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int size=buf.st_size;
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if(size > MaxResourceSize){
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menu->errmes("Error: File %s is too big (>%d bytes)",filename,MaxResourceSize);
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return 1;
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}
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ItemNames.lfree();
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ResourceData.Size = size;
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fread( ResourceData.Data, ResourceData.Size, 1, fptr);
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fclose(fptr);
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if (FileIsEncrypted) {
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XORData();
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}
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if(!GetItems()){
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XORData();
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FileIsEncrypted = !FileIsEncrypted;
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if(!GetItems()){
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menu->errmes("Error! Invalid OBJECT file.");
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return 1;
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}
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}
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if (ItemNames.num == 0){
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menu->errmes("Error! 0 objects in file.");
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return 1;
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}
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return 0;
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}
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//********************************************
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int ObjList::save(char *filename,bool FileIsEncrypted)
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{
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byte lsbyte,msbyte;
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int ItemNamesStart,ObjectFilePos;
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int CurrentItem,CurrentChar;
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FILE *fptr;
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ResourceData.Size = ItemNames.num*3 + 5;
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//3 bytes for each index entry, 3 bytes for header, 2 for '?' object
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for (CurrentItem = 1;CurrentItem<=ItemNames.num;CurrentItem++){
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if(ItemNames.at(CurrentItem-1) != "?")
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ResourceData.Size+=ItemNames.at(CurrentItem-1).length()+1;
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}
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//create data
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ItemNamesStart = ItemNames.num*3 + 3;
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msbyte = (ItemNamesStart-3) / 256;
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lsbyte = (ItemNamesStart-3) % 256;
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ResourceData.Data[0] = lsbyte;
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ResourceData.Data[1] = msbyte;
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ResourceData.Data[2] = MaxScreenObjects;
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ResourceData.Data[3] = lsbyte;
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ResourceData.Data[4] = msbyte;
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ResourceData.Data[5] = 0;
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ResourceData.Data[ItemNamesStart] = '?';
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ResourceData.Data[ItemNamesStart + 1] = 0;
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ObjectFilePos = ItemNamesStart + 2;
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for (CurrentItem = 1;CurrentItem<=ItemNames.num;CurrentItem++){
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if (ItemNames.at(CurrentItem-1) == "?"){
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ResourceData.Data[CurrentItem*3] = ResourceData.Data[0];
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ResourceData.Data[CurrentItem*3+1] = ResourceData.Data[1];
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ResourceData.Data[CurrentItem*3+2] = RoomNum[CurrentItem-1];
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}
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else{
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msbyte = (ObjectFilePos-3) / 256;
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lsbyte = (ObjectFilePos-3) % 256;
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ResourceData.Data[CurrentItem*3] = lsbyte;;
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ResourceData.Data[CurrentItem*3+1] = msbyte;
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ResourceData.Data[CurrentItem*3+2] = RoomNum[CurrentItem-1];
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for (CurrentChar = 0; CurrentChar<(int)ItemNames.at(CurrentItem-1).length();CurrentChar++){
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ResourceData.Data[ObjectFilePos] = ItemNames.at(CurrentItem-1)[CurrentChar];
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ObjectFilePos++;
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}
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ResourceData.Data[ObjectFilePos] = 0;
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ObjectFilePos++;
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}
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}//end create data
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fptr = fopen(filename,"wb");
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if(fptr==NULL){
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menu->errmes("Error opening file %s !",filename);
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return 1;
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}
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if(FileIsEncrypted)XORData();
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fwrite(ResourceData.Data,ResourceData.Size,1,fptr);
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fclose(fptr);
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return 0;
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}
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//*****************************************
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void ObjList::clear()
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{
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ItemNames.lfree();
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ItemNames.add("?");
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memset(RoomNum,0,sizeof(RoomNum));
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}
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