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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/thread.h"
namespace Illusions {
// Thread
Thread::Thread(IllusionsEngine *vm, uint32 threadId, uint32 callingThreadId, uint notifyFlags)
: _vm(vm), _threadId(threadId), _callingThreadId(callingThreadId), _notifyFlags(notifyFlags),
_pauseCtr(0), _terminated(false) {
}
Thread::~Thread() {
}
int Thread::onUpdate() {
return kTSTerminate;
}
void Thread::onSuspend() {
}
void Thread::onNotify() {
}
void Thread::onPause() {
}
void Thread::onResume() {
}
void Thread::onTerminated() {
}
void Thread::pause() {
if (!_terminated) {
++_pauseCtr;
if (_pauseCtr == 1)
onPause();
}
}
void Thread::resume() {
if (!_terminated) {
--_pauseCtr;
if (_pauseCtr == 0)
onResume();
}
}
void Thread::suspend() {
if (!_terminated) {
++_pauseCtr;
if (_pauseCtr == 1)
onSuspend();
}
}
void Thread::notify() {
if (!_terminated) {
--_pauseCtr;
if (_pauseCtr == 0)
onNotify();
}
}
int Thread::update() {
// NOTE Deletion of terminated threads handled in caller
int status = kTSYield;
if (!_terminated && _pauseCtr <= 0) {
status = onUpdate();
if (status == kTSTerminate)
terminate();
else if (status == kTSSuspend)
suspend();
}
return status;
}
void Thread::terminate() {
if (!_terminated) {
if (!(_notifyFlags & 1)) {
debug("Thread::terminate() _callingThreadId: %08X", _callingThreadId);
_vm->notifyThreadId(_callingThreadId);
}
_callingThreadId = 0;
onTerminated();
// TODO _vm->removeThread(_threadId, this);
_terminated = true;
}
}
// ThreadList
ThreadList::ThreadList(IllusionsEngine *vm)
: _vm(vm) {
}
void ThreadList::startThread(Thread *thread) {
// TODO tag has to be set by the Thread class scrmgrGetCurrentScene();
_threads.push_back(thread);
// TODO _vm->addThread(thread->_threadId, thread);
}
void ThreadList::updateThreads() {
while (1) {
Iterator it = _threads.begin();
while (it != _threads.end()) {
Thread *thread = *it;
if (thread->_terminated) {
it = _threads.erase(it);
delete thread;
} else {
int status = kTSRun;
while (!thread->_terminated && status != kTSTerminate && status != kTSYield)
status = thread->update();
++it;
}
}
/* TODO
if (script->threadUpdateContinueFlag)
script->_threadUpdateContinueFlag = false;
else
*/
break;
}
}
Thread *ThreadList::findThread(uint32 threadId) {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it)
if ((*it)->_threadId == threadId && !(*it)->_terminated)
return (*it);
return 0;
}
void ThreadList::suspendId(uint32 threadId) {
Thread *thread = findThread(threadId);
if (thread)
thread->suspend();
}
void ThreadList::notifyId(uint32 threadId) {
Thread *thread = findThread(threadId);
if (thread)
thread->notify();
}
void ThreadList::notifyTimerThreads(uint32 callingThreadId) {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *thread = *it;
if (thread->_type == kTTTimerThread && thread->_callingThreadId == callingThreadId)
thread->notify();
}
}
void ThreadList::suspendTimerThreads(uint32 callingThreadId) {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *thread = *it;
if (thread->_type == kTTTimerThread && thread->_callingThreadId == callingThreadId)
thread->suspend();
}
}
void ThreadList::terminateThreads(uint32 threadId) {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *thread = *it;
if (thread->_threadId != threadId)
thread->terminate();
}
}
void ThreadList::terminateThreadsByTag(uint32 tag, uint32 threadId) {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *thread = *it;
if (thread->_tag == tag && thread->_threadId != threadId)
thread->terminate();
}
}
void ThreadList::suspendThreadsByTag(uint32 tag, uint32 threadId) {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *thread = *it;
if (thread->_tag == tag && thread->_threadId != threadId)
thread->suspend();
}
}
void ThreadList::notifyThreadsByTag(uint32 tag, uint32 threadId) {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *thread = *it;
if (thread->_tag == tag && thread->_threadId != threadId)
thread->notify();
}
}
void ThreadList::pauseThreads(uint32 threadId) {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *thread = *it;
if (thread->_threadId != threadId)
thread->pause();
}
}
void ThreadList::resumeThreads(uint32 threadId) {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *thread = *it;
if (thread->_threadId != threadId)
thread->resume();
}
}
void ThreadList::endTalkThreads() {
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *thread = *it;
if (thread->_type == kTTTalkThread)
thread->terminate();
}
}
void ThreadList::killThread(uint32 threadId) {
if (!threadId)
return;
Thread *thread = findThread(threadId);
if (!thread)
return;
for (Iterator it = _threads.begin(); it != _threads.end(); ++it) {
Thread *childThread = *it;
if (childThread->_callingThreadId == threadId)
killThread(childThread->_threadId);
}
if (thread->_type == kTTTalkThread) {
thread->_callingThreadId = 0;
// TODO script_TalkThreads_sub_417F60(thread->_threadId, 0);
// TODO script_TalkThreads_sub_417FA0(thread->_threadId, 0);
} else {
// TODO artmgrThreadIsDead(thread->threadId);
thread->terminate();
}
}
void ThreadList::setThreadSceneId(uint32 threadId, uint32 sceneId) {
Thread *thread = findThread(threadId);
if (thread)
thread->_tag = sceneId;
}
uint32 ThreadList::getThreadSceneId(uint32 threadId) {
Thread *thread = findThread(threadId);
return thread ? thread->_tag : 0;
}
} // End of namespace Illusions
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