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author | Ľubomír Remák | 2018-02-14 21:41:09 +0100 |
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committer | Eugene Sandulenko | 2018-08-25 23:12:01 +0200 |
commit | 95cd6b74426b555e58577be0c46006a60fd77979 (patch) | |
tree | 574a1eff3f142e92c1f9ef511f27acc5e9adb674 /engines/mutationofjb/encryptedfile.cpp | |
parent | 764ee3a5a3f9f600b8d369d8474d2702b22f73f7 (diff) | |
download | scummvm-rg350-95cd6b74426b555e58577be0c46006a60fd77979.tar.gz scummvm-rg350-95cd6b74426b555e58577be0c46006a60fd77979.tar.bz2 scummvm-rg350-95cd6b74426b555e58577be0c46006a60fd77979.zip |
MUTATIONOFJB: Load and draw scene background
Diffstat (limited to 'engines/mutationofjb/encryptedfile.cpp')
-rw-r--r-- | engines/mutationofjb/encryptedfile.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/engines/mutationofjb/encryptedfile.cpp b/engines/mutationofjb/encryptedfile.cpp new file mode 100644 index 0000000000..0796811dda --- /dev/null +++ b/engines/mutationofjb/encryptedfile.cpp @@ -0,0 +1,64 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "encryptedfile.h" + +static const uint8 XOR_TABLE[] = { + 0x41, 0x2b, 0x7a, 0x0c, 0xc8, 0xe5, 0x0c, 0xde, 0x45, 0xa8, 0x00, 0xad, + 0x70, 0xac, 0x23, 0xe0, 0x0c, 0xde, 0xac, 0x16, 0xa1, 0x1a, 0x70, 0x17, + 0x1b, 0x90, 0x34, 0x6e, 0x53, 0xfe, 0xdd, 0x3c, 0xef, 0x74, 0x75, 0x3e, + 0x2e, 0xb0, 0x3d, 0x2b, 0x74, 0x6d, 0x59, 0xde, 0xc6, 0x20, 0xb8, 0xf3, + 0x7d, 0xfa, 0x4d, 0xbd, 0xdb, 0x3c, 0xc5, 0xcb, 0x57, 0x13, 0x40, 0x6b, + 0xb8, 0xad, 0xb9, 0xc1, 0x6a, 0x37, 0x39, 0x80, 0x94, 0xd3, 0xdf, 0x4b, + 0xe4, 0xe4, 0x7a, 0x4c, 0x0f, 0x21, 0x27, 0x9a, 0x7e, 0x52, 0x35, 0x58, + 0xb4, 0xbc, 0x5a, 0xc9, 0x48, 0x7f, 0xcc, 0xb6, 0x97, 0x7b, 0xf1, 0xd5, + 0x88, 0x8c, 0xa9, 0x27, 0xf7, 0x20, 0x68, 0x65, 0xad, 0x6f, 0x9e, 0x07, + 0xf8, 0xf6, 0x2c, 0x65, 0x4a, 0xe9, 0xd8, 0x13, 0x6a, 0xb5, 0x14, 0x6f, + 0x29, 0xdc, 0x68, 0xf8, 0xa0, 0xb6, 0x73, 0x03, 0x69, 0xe3, 0x4f, 0xb6, + 0x59, 0x79, 0xae, 0x93, 0xad, 0x40, 0x27, 0xd0, 0xb5, 0x7a, 0x68, 0x5d, + 0x5e, 0x19, 0x53, 0x4f, 0x40, 0x56, 0x3d, 0x10, 0xf8, 0x0a, 0xc6, 0x90, + 0x06, 0x45, 0x13, 0x4a, 0x6a, 0xfe, 0x56, 0xeb, 0xbc, 0xd9, 0xee, 0xe0, + 0x85, 0x5e, 0x98, 0x23, 0xf9, 0x19, 0x60, 0xf9, 0x7e, 0x8d, 0x61, 0xa0, + 0x7c, 0xe1, 0x84, 0xf2, 0x7a, 0xb8, 0xbe, 0x8e, 0x81, 0x9e, 0x87, 0x20, + 0x32, 0xf3, 0x8c, 0xb4, 0x2c, 0x4d, 0xc8, 0x50, 0x9b, 0xa5, 0x9c, 0x27, + 0x02, 0xd6, 0x7f, 0x2a, 0xaf, 0x46, 0x65, 0xd0, 0x6a, 0xae, 0xfa, 0x53, + 0x37, 0x6c, 0x49, 0xb9, 0x4d, 0xcd, 0x6c, 0x6b, 0xa7, 0x2d, 0x66, 0x32, + 0xb4, 0xf5, 0x41, 0xd5, 0x18, 0xc4, 0xfd, 0xbe, 0x8a, 0x47, 0x11, 0x50, + 0x3d, 0x97, 0x64, 0xda, 0x5a, 0x27, 0x18, 0x60, 0x78, 0x80, 0x86, 0x8a, + 0x2a, 0x72, 0x40, 0x89 +}; + +namespace MutationOfJB { + +uint32 EncryptedFile::read(void *dataPtr, uint32 dataSize) { + uint8 xorPos = pos() % 256; + const uint32 readBytes = Common::File::read(dataPtr, dataSize); + + for (uint32 i = 0; i < readBytes; ++i) { + static_cast<uint8 *>(dataPtr)[i] ^= XOR_TABLE[xorPos]; + xorPos++; + } + + return readBytes; +} + +} |