2 Copyright (C) 2004 Parallel Realities
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
49 void Pak::showPakErrorAndExit()
51 printf("\nFatal Error: The Blob Wars PAK file was either not found or was not accessable.\n");
52 printf("(If you compiled from source did you forget to run make install?)\n");
53 printf("The path to the file was expected to be,\n\n");
54 printf(PAKFULLPATH"\n\n");
55 printf("Please try running the game again. If problems persist either reinstall the game or check,\n\n");
56 printf("http://www.parallelrealities.co.uk/blobWars.php\n\n");
57 printf("for updates.\n\n");
61 void Pak::setPakFile(const char *pakFilename)
64 strlcpy(this->pakFilename, pakFilename, sizeof this->pakFilename);
66 debug(("Pak : Filename set to %s\n", pakFilename));
68 FILE *pak = fopen(pakFilename, "rb");
72 showPakErrorAndExit();
75 fseek(pak, (-sizeof(Uint32)) * 2, SEEK_END);
76 fread(&listPos, sizeof(Uint32), 1, pak);
77 fread(&numberOfFiles, sizeof(Uint32), 1, pak);
79 debug(("Pak : File list resides at %d\n", (int)listPos));
80 debug(("Pak : Number of files are %d\n", (int)numberOfFiles));
82 fd = new FileData[numberOfFiles];
84 fseek(pak, listPos, SEEK_SET);
88 for (unsigned int i = 0 ; i < numberOfFiles ; i++)
90 result = fread(&fd[i], sizeof(FileData), 1, pak);
95 showPakErrorAndExit();
98 debug(("Read FileData #%d / %d : %s\n", (i + 1), numberOfFiles, fd[i].filename));
106 bool Pak::unpack(const char *filename, unsigned char **buffer)
108 debug(("Pak : Unpacking %s...\n", filename));
112 for (unsigned int i = 0 ; i < numberOfFiles ; i++)
114 if (strcmp(filename, fd[i].filename) == 0)
116 currentFile = &fd[i];
121 if (currentFile == NULL)
126 FILE *pak = fopen(pakFilename, "rb");
129 showPakErrorAndExit();
132 fseek(pak, currentFile->location, SEEK_SET);
141 input = new unsigned char[(int)(currentFile->cSize * 1.01) + 12];
142 *buffer = new unsigned char[currentFile->fSize + 1];
144 fread(input, 1, currentFile->cSize, pak);
146 uLongf fSize = (uLongf)currentFile->fSize;
148 uncompress(*buffer, &fSize, input, currentFile->cSize);
149 (*buffer)[currentFile->fSize] = 0;
158 debug(("Pak : Unpack %s...Done\n", filename));
163 bool Pak::fileExists(const char *filename)
165 unsigned int hashcode = 0;
166 unsigned int length = strlen(filename);
168 for (unsigned int i = 0 ; i < length ; i++)
170 hashcode = hashcode + (filename[i] * 31 ^ (length - i));
173 for (unsigned int i = 0 ; i < numberOfFiles ; i++)
175 if (strcmp(fd[i].filename, filename) == 0)
184 unsigned int Pak::getUncompressedSize()
186 return (unsigned int)currentFile->fSize;