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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 "illusions/illusions.h"
#include "illusions/threads/scriptthread.h"
#include "illusions/scriptopcodes.h"
namespace Illusions {
// ScriptThread
ScriptThread::ScriptThread(IllusionsEngine *vm, uint32 threadId, uint32 callingThreadId, uint notifyFlags,
byte *scriptCodeIp, uint32 value8, uint32 valueC, uint32 value10)
: Thread(vm, threadId, callingThreadId, notifyFlags), _scriptCodeIp(scriptCodeIp), _value8(value8),
_valueC(valueC), _value10(value10), _sequenceStalled(0) {
_type = kTTScriptThread;
_sceneId = _vm->getCurrentScene();
}
int ScriptThread::onUpdate() {
OpCall opCall;
opCall._result = kTSRun;
opCall._callerThreadId = _threadId;
while (!_terminated && opCall._result == kTSRun) {
loadOpcode(opCall);
execOpcode(opCall);
_scriptCodeIp += opCall._deltaOfs;
}
if (_terminated)
opCall._result = kTSTerminate;
return opCall._result;
}
void ScriptThread::loadOpcode(OpCall &opCall) {
if (_vm->getGameId() == kGameIdDuckman) {
opCall._op = _scriptCodeIp[0] & 0x7F;
opCall._opSize = _scriptCodeIp[1];
opCall._threadId = _scriptCodeIp[0] & 0x80 ? _threadId : 0;
} else {
opCall._op = _scriptCodeIp[0];
opCall._opSize = _scriptCodeIp[1] >> 1;
opCall._threadId = _scriptCodeIp[1] & 1 ? _threadId : 0;
}
opCall._code = _scriptCodeIp + 2;
opCall._deltaOfs = opCall._opSize;
}
void ScriptThread::execOpcode(OpCall &opCall) {
_vm->_scriptOpcodes->execOpcode(this, opCall);
}
} // End of namespace Illusions
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