136 lines
3.9 KiB
C++
136 lines
3.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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 3 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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/endian.h"
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#include "glk/scott/types.h"
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#include "glk/scott/unp64/unp64.h"
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#include "glk/scott/unp64/exo_util.h"
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namespace Glk {
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namespace Scott {
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void scnCaution(UnpStr *unp) {
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byte *mem;
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if (unp->_idFlag)
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return;
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mem = unp->_mem;
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/* quickpacker 1.0 sysless */
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x801, 0xE67800A2) &&
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u32eq(mem + 0x805, 0x07EDBD01) &&
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u32eq(mem + 0x80d, 0x00284CF8) &&
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u32eq(mem + 0x844, 0xAC00334C)) {
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unp->_forced = 0x801;
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unp->_depAdr = 0x28;
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unp->_retAdr = READ_LE_UINT16(&mem[0x86b]);
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unp->_endAdr = READ_LE_UINT16(&mem[0x85a]);
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unp->_fStrAf = mem[0x863];
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unp->_strAdC = EA_ADDFF | 0xffff;
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unp->_idFlag = 1;
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return;
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}
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}
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/* quickpacker 2.x + sys */
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if (unp->_depAdr == 0) {
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if (u32eqmasked(mem + 0x80b, 0xf0ffffff, 0x60A200A0) &&
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u32eq(mem + 0x80f, 0x0801BD78) &&
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u32eq(mem + 0x813, 0xD0CA0095) &&
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u32eq(mem + 0x81e, 0xD0C80291) &&
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u32eq(mem + 0x817, 0x001A4CF8)) {
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unp->_forced = 0x80b;
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unp->_depAdr = 0x01a;
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if (mem[0x80e] == 0x69) {
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unp->_retAdr = READ_LE_UINT16(&mem[0x842]);
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unp->_endAdr = READ_LE_UINT16(&mem[0x850]);
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unp->_endAdr += 0x100;
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unp->_fStrAf = 0x4f;
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unp->_strAdC = 0xffff | EA_USE_Y;
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unp->_idFlag = 1;
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return;
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} else if (mem[0x80e] == 0x6c) {
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unp->_retAdr = READ_LE_UINT16(&mem[0x844]);
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unp->_endAdr = READ_LE_UINT16(&mem[0x84e]);
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unp->_endAdr++;
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unp->_fStrAf = 0x4d;
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unp->_idFlag = 1;
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return;
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}
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}
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}
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/* strangely enough, sysless v2.0 depacker is at $0002 */
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x83d, 0xAA004A20) &&
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u32eq(mem + 0x801, 0xA27800A0) &&
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u32eq(mem + 0x805, 0x080FBD55) &&
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u32eq(mem + 0x809, 0xD0CA0095) &&
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u32eq(mem + 0x80d, 0x00024CF8)) {
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unp->_forced = 0x801;
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unp->_depAdr = 0x2;
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unp->_retAdr = READ_LE_UINT16(&mem[0x83b]);
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unp->_endAdr = READ_LE_UINT16(&mem[0x845]);
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unp->_endAdr++;
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unp->_fStrAf = mem[0x849];
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// unp->_StrAdC=0xffff;
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unp->_idFlag = 1;
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return;
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}
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}
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/* same goes for v2.5 sysless, seems almost another packer */
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x83b, 0xAA005520) &&
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u32eq(mem + 0x801, 0x60A200A0) &&
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u32eq(mem + 0x805, 0x0801BD78) &&
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u32eq(mem + 0x809, 0xD0CA0095) &&
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u32eq(mem + 0x80d, 0x00104CF8)) {
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unp->_forced = 0x801;
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unp->_depAdr = 0x10;
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unp->_retAdr = READ_LE_UINT16(&mem[0x839]);
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unp->_endAdr = READ_LE_UINT16(&mem[0x847]);
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unp->_endAdr += 0x100;
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unp->_fStrAf = 0x46;
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unp->_strAdC = 0xffff | EA_USE_Y;
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unp->_idFlag = 1;
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return;
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}
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}
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/* hardpacker */
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x80d, 0x8534A978) &&
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u32eq(mem + 0x811, 0xB9B3A001) &&
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u32eq(mem + 0x815, 0x4C99081F) &&
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u32eq(mem + 0x819, 0xF7D08803) &&
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u32eq(mem + 0x81d, 0xB9034D4C)) {
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unp->_forced = 0x80d;
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unp->_depAdr = 0x34d;
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unp->_retAdr = READ_LE_UINT16(&mem[0x87f]);
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unp->_endAdr = READ_LE_UINT16(&mem[0x88d]);
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unp->_fStrAf = 0x3ba;
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unp->_strAdC = EA_ADDFF | 0xffff;
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unp->_idFlag = 1;
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return;
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}
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}
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}
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} // End of namespace Scott
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} // End of namespace Glk
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