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/* 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 "common/random.h"
#include "common/error.h"
#include "adl/adl_v5.h"
#include "adl/display.h"
#include "adl/graphics.h"
namespace Adl {
AdlEngine_v5::AdlEngine_v5(OSystem *syst, const AdlGameDescription *gd) :
AdlEngine_v4(syst, gd) {
}
void AdlEngine_v5::initRoomState(RoomState &roomState) const {
roomState.picture = 0xff;
roomState.isFirstTime = 0xff;
}
byte AdlEngine_v5::restoreRoomState(byte room) {
const RoomState &backup = getCurRegion().rooms[room - 1];
if (backup.isFirstTime != 0xff) {
getRoom(room).curPicture = getRoom(room).picture = backup.picture;
// CHECKME: Why doesn't this just copy the flag unconditionally?
if (backup.isFirstTime != 1) {
getRoom(room).isFirstTime = false;
return 0;
}
}
return backup.isFirstTime;
}
AdlEngine_v5::RegionChunkType AdlEngine_v5::getRegionChunkType(const uint16 addr) const {
switch (addr) {
case 0x7b00:
return kRegionChunkGlobalCmds;
case 0x9500:
return kRegionChunkRoomCmds;
default:
return AdlEngine_v4::getRegionChunkType(addr);
}
}
void AdlEngine_v5::setupOpcodeTables() {
AdlEngine_v4::setupOpcodeTables();
_condOpcodes[0x0a] = opcode(&AdlEngine_v5::o_abortScript);
_actOpcodes[0x0a] = opcode(&AdlEngine_v5::o_dummy);
_actOpcodes[0x0b] = opcode(&AdlEngine_v5::o_setTextMode);
_actOpcodes[0x0e] = opcode(&AdlEngine_v5::o_dummy);
_actOpcodes[0x13] = opcode(&AdlEngine_v5::o_dummy);
}
int AdlEngine_v5::o_isNounNotInRoom(ScriptEnv &e) {
OP_DEBUG_1("\t&& NO_SUCH_ITEMS_IN_ROOM(%s)", itemRoomStr(e.arg(1)).c_str());
Common::List<Item>::const_iterator item;
setVar(24, 0);
for (item = _state.items.begin(); item != _state.items.end(); ++item)
if (item->noun == e.getNoun()) {
setVar(24, 1);
if (item->room == roomArg(e.arg(1)))
return -1;
}
return 1;
}
int AdlEngine_v5::o_abortScript(ScriptEnv &e) {
OP_DEBUG_0("\t&& ABORT_SCRIPT()");
_abortScript = true;
setVar(2, 0);
return -1;
}
int AdlEngine_v5::o_dummy(ScriptEnv &e) {
OP_DEBUG_0("\tDUMMY()");
return 0;
}
int AdlEngine_v5::o_setTextMode(ScriptEnv &e) {
OP_DEBUG_1("\tSET_TEXT_MODE(%d)", e.arg(1));
switch (e.arg(1)) {
case 1:
if (_linesPrinted != 0) {
_display->printChar(APPLECHAR(' '));
handleTextOverflow();
_display->moveCursorTo(Common::Point(0, 23));
_maxLines = 4;
}
return 1;
case 2:
_textMode = true;
_display->setMode(DISPLAY_MODE_TEXT);
_display->home();
_maxLines = 24;
_linesPrinted = 0;
return 1;
case 3:
// We re-use the restarting flag here, to simulate a long jump
_isRestarting = true;
return -1;
default:
error("Invalid text mode %d", e.arg(1));
}
}
int AdlEngine_v5::o_setRegionRoom(ScriptEnv &e) {
OP_DEBUG_2("\tSET_REGION_ROOM(%d, %d)", e.arg(1), e.arg(2));
getCurRoom().curPicture = getCurRoom().picture;
getCurRoom().isFirstTime = false;
switchRegion(e.arg(1));
_state.room = e.arg(2);
restoreRoomState(_state.room);
return -1;
}
int AdlEngine_v5::o_setRoomPic(ScriptEnv &e) {
const byte isFirstTime = restoreRoomState(e.arg(1));
// CHECKME: More peculiar isFirstTime handling (see also restoreRoomState).
// Is this here to prevent changing the backed up flag from 1 to 0? Since
// that could only happen if the room isFirstTime is 0 while the backed up flag
// is 1, is this scenario even possible?
if (isFirstTime != 0xff)
getRoom(e.arg(1)).isFirstTime = isFirstTime;
AdlEngine_v4::o_setRoomPic(e);
return 2;
}
} // End of namespace Adl
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