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208
engines/glk/scott/unp64/scanners/ccs.cpp
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208
engines/glk/scott/unp64/scanners/ccs.cpp
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/* 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 scnCCS(UnpStr *unp) {
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byte *mem;
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int p;
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if (unp->_idFlag)
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return;
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mem = unp->_mem;
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x817, 0xB901E678) &&
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u32eq(mem + 0x81b, 0xFD990831) &&
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u32eq(mem + 0x8ff, 0xFEE60290) &&
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u32eq(mem + 0x90f, 0x02903985)) {
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if (unp->_info->_run == -1)
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unp->_forced = 0x817;
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unp->_depAdr = 0x0ff;
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unp->_fEndAf = 0x2d;
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unp->_endAdC = 0xffff;
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unp->_retAdr = READ_LE_UINT16(&mem[0x8ed]);
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if (unp->_retAdr == 0xa659) {
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mem[0x8ec] = 0x2c;
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unp->_retAdr = READ_LE_UINT16(&mem[0x8f0]);
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}
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unp->_idFlag = 1;
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return;
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}
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}
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/* derived from supercomp/eqseq */
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x80b, 0x8C7800A0) &&
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u32eq(mem + 0x812, 0x0099082F) &&
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u32eq(mem + 0x846, 0x0DADF2D0) &&
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u32eq(mem + 0x8c0, 0xF001124C)) {
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if (unp->_info->_run == -1)
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unp->_forced = 0x80b;
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unp->_depAdr = 0x100;
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unp->_endAdr = 0xae;
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unp->_retAdr = READ_LE_UINT16(&mem[0x8f1]);
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if (unp->_retAdr == 0xa659) {
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mem[0x8f0] = 0x2c;
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unp->_retAdr = READ_LE_UINT16(&mem[0x8f4]);
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}
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unp->_idFlag = 1;
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return;
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}
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}
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x814, 0xB901E678) &&
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u32eq(mem + 0x818, 0xFD990829) &&
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u32eq(mem + 0x8a1, 0xFDA6FDB1) &&
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u32eq(mem + 0x8a5, 0xFEC602D0)) {
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if (unp->_info->_run == -1)
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unp->_forced = 0x814;
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unp->_depAdr = 0x0ff;
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unp->_fEndBf = 0x39;
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unp->_idFlag = 1;
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return;
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}
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}
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x818, 0x2CB901E6) &&
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u32eq(mem + 0x81c, 0x00FB9908) &&
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u32eq(mem + 0x850, 0xFBB1C84A) &&
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u32eq(mem + 0x854, 0xB1C81185)) {
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if (unp->_info->_run == -1)
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unp->_forced = 0x812;
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unp->_depAdr = 0x0ff;
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unp->_endAdr = 0xae;
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unp->_idFlag = 1;
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return;
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}
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}
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x818, 0x2CB901E6) &&
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u32eq(mem + 0x81c, 0x00FB9908) &&
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u32eq(mem + 0x851, 0xFBB1C812) &&
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u32eq(mem + 0x855, 0xB1C81185)) {
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if (unp->_info->_run == -1)
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unp->_forced = 0x812;
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unp->_depAdr = 0x0ff;
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unp->_endAdr = 0xae;
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unp->_idFlag = 1;
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return;
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}
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}
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x82c, 0x018538A9) &&
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u32eq(mem + 0x831, 0xFD990842) &&
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u32eq(mem + 0x83e, 0x00FF4CF1) &&
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u32eq(mem + 0x8a5, 0x50C651C6)) {
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if (unp->_info->_run == -1)
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unp->_forced = 0x822;
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unp->_depAdr = 0x0ff;
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unp->_fEndBf = 0x39;
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unp->_retAdr = READ_LE_UINT16(&mem[0x8ea]);
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unp->_idFlag = 1;
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return;
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}
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}
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if (unp->_depAdr == 0) {
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if (u16eq(mem + 0x81a, 0x00A0) &&
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(u32eq(mem + 0x820, 0xFB990837) ||
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u32eq(mem + 0x824, 0xFB990837)) &&
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u32eq(mem + 0x83b, 0xFD91FBB1) &&
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u32eq(mem + 0x8bc, 0xEE00FC99)) {
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if (unp->_info->_run == -1)
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unp->_forced = 0x81a;
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unp->_depAdr = 0x0ff;
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unp->_fEndAf = 0x39;
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unp->_endAdC = 0xffff;
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unp->_retAdr = READ_LE_UINT16(&mem[0x8b3]);
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unp->_idFlag = 1;
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return;
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}
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}
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x812, 0xE67800A0) &&
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u32eq(mem + 0x816, 0x0823B901) &&
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u32eq(mem + 0x81a, 0xC800FD99) &&
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u32eq(mem + 0x81e, 0xFF4CF7D0) &&
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u32eq(mem + 0x885, 0xFDA6FDB1)) {
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if (unp->_info->_run == -1)
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unp->_forced = 0x812;
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unp->_depAdr = 0x0ff;
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// $2d is unreliable, Executer uses line number at $0803/4,
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// which is read at $0039/3a by basic, as end address,
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// then can set arbitrarily $2d/$ae pointers after unpack.
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// unp->_fEndAf=0x2d;
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unp->_endAdr = READ_LE_UINT16(&mem[0x803]);
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unp->_endAdr++;
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if (u32eq(mem + 0x87f, 0x4CA65920))
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mem[0x87f] = 0x2c;
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unp->_retAdr = READ_LE_UINT16(&mem[0x883]);
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unp->_idFlag = 1;
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return;
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}
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}
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x812, 0xE67800A0) &&
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u32eq(mem + 0x816, 0x084CB901) &&
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u32eq(mem + 0x81a, 0xA900FB99) &&
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u32eq(mem + 0x848, 0x00FF4CE2)) {
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if (unp->_info->_run == -1)
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unp->_forced = 0x812;
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unp->_depAdr = 0x0ff;
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unp->_fEndAf = 0x2d;
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unp->_endAdC = 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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/* Triad Hack */
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if (unp->_depAdr == 0) {
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if (u32eq(mem + 0x838, 0xB9080099) &&
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u32eq(mem + 0x83f, 0xD0880816) &&
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u32eq(mem + 0x8ff, 0xFEE60290) &&
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u32eq(mem + 0x90f, 0x02903985)) {
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if (unp->_info->_run == -1) {
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for (p = 0x80b; p < 0x820; p++) {
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if ((mem[p] & 0xa0) == 0xa0) {
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unp->_forced = p;
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break;
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}
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}
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}
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unp->_depAdr = 0x0ff;
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unp->_fEndAf = 0x2d;
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unp->_endAdC = 0xffff;
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unp->_retAdr = READ_LE_UINT16(&mem[0x8ed]);
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if (unp->_retAdr == 0xa659) {
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mem[0x8ec] = 0x2c;
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unp->_retAdr = READ_LE_UINT16(&mem[0x8f0]);
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}
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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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