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axmol/cocos/2d/CCScheduler.cpp

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/****************************************************************************
Copyright (c) 2008-2010 Ricardo Quesada
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2011 Zynga Inc.
Copyright (c) 2013-2014 Chukong Technologies Inc.
http://www.cocos2d-x.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "CCScheduler.h"
#include "2d/ccMacros.h"
#include "2d/CCDirector.h"
#include "utlist.h"
#include "2d/ccCArray.h"
#include "CCScriptSupport.h"
NS_CC_BEGIN
// data structures
// A list double-linked list used for "updates with priority"
typedef struct _listEntry
{
struct _listEntry *prev, *next;
ccSchedulerFunc callback;
void *target;
int priority;
bool paused;
bool markedForDeletion; // selector will no longer be called and entry will be removed at end of the next tick
} tListEntry;
typedef struct _hashUpdateEntry
{
tListEntry **list; // Which list does it belong to ?
tListEntry *entry; // entry in the list
void *target;
ccSchedulerFunc callback;
UT_hash_handle hh;
} tHashUpdateEntry;
// Hash Element used for "selectors with interval"
typedef struct _hashSelectorEntry
{
ccArray *timers;
void *target;
int timerIndex;
Timer *currentTimer;
bool currentTimerSalvaged;
bool paused;
UT_hash_handle hh;
} tHashTimerEntry;
// implementation Timer
Timer::Timer()
: _scheduler(nullptr)
, _elapsed(-1)
, _runForever(false)
, _useDelay(false)
, _timesExecuted(0)
, _repeat(0)
, _delay(0.0f)
, _interval(0.0f)
{
}
void Timer::setupTimerWithInterval(float seconds, unsigned int repeat, float delay)
{
_elapsed = -1;
_interval = seconds;
_delay = delay;
_useDelay = (_delay > 0.0f) ? true : false;
_repeat = repeat;
_runForever = (_repeat == kRepeatForever) ? true : false;
}
void Timer::update(float dt)
{
if (_elapsed == -1)
{
_elapsed = 0;
_timesExecuted = 0;
}
else
{
if (_runForever && !_useDelay)
{//standard timer usage
_elapsed += dt;
if (_elapsed >= _interval)
{
trigger();
_elapsed = 0;
}
}
else
{//advanced usage
_elapsed += dt;
if (_useDelay)
{
if( _elapsed >= _delay )
{
trigger();
_elapsed = _elapsed - _delay;
_timesExecuted += 1;
_useDelay = false;
}
}
else
{
if (_elapsed >= _interval)
{
trigger();
_elapsed = 0;
_timesExecuted += 1;
}
}
if (!_runForever && _timesExecuted > _repeat)
{ //unschedule timer
cancel();
}
}
}
}
// TimerTargetSelector
TimerTargetSelector::TimerTargetSelector()
: _target(nullptr)
, _selector(nullptr)
{
}
bool TimerTargetSelector::initWithSelector(Scheduler* scheduler, SEL_SCHEDULE selector, Ref* target, float seconds, unsigned int repeat, float delay)
{
_scheduler = scheduler;
_target = target;
_selector = selector;
setupTimerWithInterval(seconds, repeat, delay);
return true;
}
void TimerTargetSelector::trigger()
{
if (_target && _selector)
{
(_target->*_selector)(_elapsed);
}
}
void TimerTargetSelector::cancel()
{
_scheduler->unschedule(_selector, _target);
}
// TimerTargetCallback
TimerTargetCallback::TimerTargetCallback()
: _target(nullptr)
, _callback(nullptr)
{
}
bool TimerTargetCallback::initWithCallback(Scheduler* scheduler, const ccSchedulerFunc& callback, void *target, const std::string& key, float seconds, unsigned int repeat, float delay)
{
_scheduler = scheduler;
_target = target;
_callback = callback;
_key = key;
setupTimerWithInterval(seconds, repeat, delay);
return true;
}
void TimerTargetCallback::trigger()
{
if (_callback)
{
_callback(_elapsed);
}
}
void TimerTargetCallback::cancel()
{
_scheduler->unschedule(_key, _target);
}
#if CC_ENABLE_SCRIPT_BINDING
// TimerScriptHandler
bool TimerScriptHandler::initWithScriptHandler(int handler, float seconds)
{
_scriptHandler = handler;
_elapsed = -1;
_interval = seconds;
return true;
}
void TimerScriptHandler::trigger()
{
if (0 != _scriptHandler)
{
SchedulerScriptData data(_scriptHandler,_elapsed);
ScriptEvent event(kScheduleEvent,&data);
ScriptEngineManager::getInstance()->getScriptEngine()->sendEvent(&event);
}
}
void TimerScriptHandler::cancel()
{
}
#endif
// implementation of Scheduler
// Priority level reserved for system services.
const int Scheduler::PRIORITY_SYSTEM = INT_MIN;
// Minimum priority level for user scheduling.
const int Scheduler::PRIORITY_NON_SYSTEM_MIN = PRIORITY_SYSTEM + 1;
Scheduler::Scheduler(void)
: _timeScale(1.0f)
, _updatesNegList(nullptr)
, _updates0List(nullptr)
, _updatesPosList(nullptr)
, _hashForUpdates(nullptr)
, _hashForTimers(nullptr)
, _currentTarget(nullptr)
, _currentTargetSalvaged(false)
, _updateHashLocked(false)
#if CC_ENABLE_SCRIPT_BINDING
, _scriptHandlerEntries(20)
#endif
{
// I don't expect to have more than 30 functions to all per frame
_functionsToPerform.reserve(30);
}
Scheduler::~Scheduler(void)
{
unscheduleAll();
}
void Scheduler::removeHashElement(_hashSelectorEntry *element)
{
ccArrayFree(element->timers);
HASH_DEL(_hashForTimers, element);
free(element);
}
void Scheduler::schedule(const ccSchedulerFunc& callback, void *target, float interval, bool paused, const std::string& key)
{
this->schedule(callback, target, interval, kRepeatForever, 0.0f, paused, key);
}
void Scheduler::schedule(const ccSchedulerFunc& callback, void *target, float interval, unsigned int repeat, float delay, bool paused, const std::string& key)
{
CCASSERT(target, "Argument target must be non-nullptr");
CCASSERT(!key.empty(), "key should not be empty!");
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if (! element)
{
element = (tHashTimerEntry *)calloc(sizeof(*element), 1);
element->target = target;
HASH_ADD_PTR(_hashForTimers, target, element);
// Is this the 1st element ? Then set the pause level to all the selectors of this target
element->paused = paused;
}
else
{
CCASSERT(element->paused == paused, "");
}
if (element->timers == nullptr)
{
element->timers = ccArrayNew(10);
}
else
{
for (int i = 0; i < element->timers->num; ++i)
{
TimerTargetCallback *timer = static_cast<TimerTargetCallback*>(element->timers->arr[i]);
if (key == timer->getKey())
{
CCLOG("CCScheduler#scheduleSelector. Selector already scheduled. Updating interval from: %.4f to %.4f", timer->getInterval(), interval);
timer->setInterval(interval);
return;
}
}
ccArrayEnsureExtraCapacity(element->timers, 1);
}
TimerTargetCallback *timer = new TimerTargetCallback();
timer->initWithCallback(this, callback, target, key, interval, repeat, delay);
ccArrayAppendObject(element->timers, timer);
timer->release();
}
void Scheduler::unschedule(const std::string &key, void *target)
{
// explicity handle nil arguments when removing an object
if (target == nullptr || key.empty())
{
return;
}
//CCASSERT(target);
//CCASSERT(selector);
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if (element)
{
for (int i = 0; i < element->timers->num; ++i)
{
TimerTargetCallback *timer = static_cast<TimerTargetCallback*>(element->timers->arr[i]);
if (key == timer->getKey())
{
if (timer == element->currentTimer && (! element->currentTimerSalvaged))
{
element->currentTimer->retain();
element->currentTimerSalvaged = true;
}
ccArrayRemoveObjectAtIndex(element->timers, i, true);
// update timerIndex in case we are in tick:, looping over the actions
if (element->timerIndex >= i)
{
element->timerIndex--;
}
if (element->timers->num == 0)
{
if (_currentTarget == element)
{
_currentTargetSalvaged = true;
}
else
{
removeHashElement(element);
}
}
return;
}
}
}
}
void Scheduler::priorityIn(tListEntry **list, const ccSchedulerFunc& callback, void *target, int priority, bool paused)
{
tListEntry *listElement = new tListEntry();
listElement->callback = callback;
listElement->target = target;
listElement->priority = priority;
listElement->paused = paused;
listElement->next = listElement->prev = nullptr;
listElement->markedForDeletion = false;
// empty list ?
if (! *list)
{
DL_APPEND(*list, listElement);
}
else
{
bool added = false;
for (tListEntry *element = *list; element; element = element->next)
{
if (priority < element->priority)
{
if (element == *list)
{
DL_PREPEND(*list, listElement);
}
else
{
listElement->next = element;
listElement->prev = element->prev;
element->prev->next = listElement;
element->prev = listElement;
}
added = true;
break;
}
}
// Not added? priority has the higher value. Append it.
if (! added)
{
DL_APPEND(*list, listElement);
}
}
// update hash entry for quick access
tHashUpdateEntry *hashElement = (tHashUpdateEntry *)calloc(sizeof(*hashElement), 1);
hashElement->target = target;
hashElement->list = list;
hashElement->entry = listElement;
HASH_ADD_PTR(_hashForUpdates, target, hashElement);
}
void Scheduler::appendIn(_listEntry **list, const ccSchedulerFunc& callback, void *target, bool paused)
{
tListEntry *listElement = new tListEntry();
listElement->callback = callback;
listElement->target = target;
listElement->paused = paused;
listElement->markedForDeletion = false;
DL_APPEND(*list, listElement);
// update hash entry for quicker access
tHashUpdateEntry *hashElement = (tHashUpdateEntry *)calloc(sizeof(*hashElement), 1);
hashElement->target = target;
hashElement->list = list;
hashElement->entry = listElement;
HASH_ADD_PTR(_hashForUpdates, target, hashElement);
}
void Scheduler::schedulePerFrame(const ccSchedulerFunc& callback, void *target, int priority, bool paused)
{
tHashUpdateEntry *hashElement = nullptr;
HASH_FIND_PTR(_hashForUpdates, &target, hashElement);
if (hashElement)
{
#if COCOS2D_DEBUG >= 1
CCASSERT(hashElement->entry->markedForDeletion,"");
#endif
// TODO: check if priority has changed!
hashElement->entry->markedForDeletion = false;
return;
}
// most of the updates are going to be 0, that's way there
// is an special list for updates with priority 0
if (priority == 0)
{
appendIn(&_updates0List, callback, target, paused);
}
else if (priority < 0)
{
priorityIn(&_updatesNegList, callback, target, priority, paused);
}
else
{
// priority > 0
priorityIn(&_updatesPosList, callback, target, priority, paused);
}
}
bool Scheduler::isScheduled(const std::string& key, void *target)
{
CCASSERT(!key.empty(), "Argument key must not be empty");
CCASSERT(target, "Argument target must be non-nullptr");
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if (!element)
{
return false;
}
if (element->timers == nullptr)
{
return false;
}
else
{
for (int i = 0; i < element->timers->num; ++i)
{
TimerTargetCallback *timer = static_cast<TimerTargetCallback*>(element->timers->arr[i]);
if (key == timer->getKey())
{
return true;
}
}
return false;
}
return false; // should never get here
}
void Scheduler::removeUpdateFromHash(struct _listEntry *entry)
{
tHashUpdateEntry *element = nullptr;
HASH_FIND_PTR(_hashForUpdates, &entry->target, element);
if (element)
{
// list entry
DL_DELETE(*element->list, element->entry);
CC_SAFE_DELETE(element->entry);
// hash entry
HASH_DEL(_hashForUpdates, element);
free(element);
}
}
void Scheduler::unscheduleUpdate(void *target)
{
if (target == nullptr)
{
return;
}
tHashUpdateEntry *element = nullptr;
HASH_FIND_PTR(_hashForUpdates, &target, element);
if (element)
{
if (_updateHashLocked)
{
element->entry->markedForDeletion = true;
}
else
{
this->removeUpdateFromHash(element->entry);
}
}
}
void Scheduler::unscheduleAll(void)
{
unscheduleAllWithMinPriority(PRIORITY_SYSTEM);
}
void Scheduler::unscheduleAllWithMinPriority(int minPriority)
{
// Custom Selectors
tHashTimerEntry *element = nullptr;
tHashTimerEntry *nextElement = nullptr;
for (element = _hashForTimers; element != nullptr;)
{
// element may be removed in unscheduleAllSelectorsForTarget
nextElement = (tHashTimerEntry *)element->hh.next;
unscheduleAllForTarget(element->target);
element = nextElement;
}
// Updates selectors
tListEntry *entry, *tmp;
if(minPriority < 0)
{
DL_FOREACH_SAFE(_updatesNegList, entry, tmp)
{
if(entry->priority >= minPriority)
{
unscheduleUpdate(entry->target);
}
}
}
if(minPriority <= 0)
{
DL_FOREACH_SAFE(_updates0List, entry, tmp)
{
unscheduleUpdate(entry->target);
}
}
DL_FOREACH_SAFE(_updatesPosList, entry, tmp)
{
if(entry->priority >= minPriority)
{
unscheduleUpdate(entry->target);
}
}
#if CC_ENABLE_SCRIPT_BINDING
_scriptHandlerEntries.clear();
#endif
}
void Scheduler::unscheduleAllForTarget(void *target)
{
// explicit nullptr handling
if (target == nullptr)
{
return;
}
// Custom Selectors
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if (element)
{
if (ccArrayContainsObject(element->timers, element->currentTimer)
&& (! element->currentTimerSalvaged))
{
element->currentTimer->retain();
element->currentTimerSalvaged = true;
}
ccArrayRemoveAllObjects(element->timers);
if (_currentTarget == element)
{
_currentTargetSalvaged = true;
}
else
{
removeHashElement(element);
}
}
// update selector
unscheduleUpdate(target);
}
#if CC_ENABLE_SCRIPT_BINDING
unsigned int Scheduler::scheduleScriptFunc(unsigned int handler, float interval, bool paused)
{
SchedulerScriptHandlerEntry* entry = SchedulerScriptHandlerEntry::create(handler, interval, paused);
_scriptHandlerEntries.pushBack(entry);
return entry->getEntryId();
}
void Scheduler::unscheduleScriptEntry(unsigned int scheduleScriptEntryID)
{
for (ssize_t i = _scriptHandlerEntries.size() - 1; i >= 0; i--)
{
SchedulerScriptHandlerEntry* entry = _scriptHandlerEntries.at(i);
if (entry->getEntryId() == (int)scheduleScriptEntryID)
{
entry->markedForDeletion();
break;
}
}
}
#endif
void Scheduler::resumeTarget(void *target)
{
CCASSERT(target != nullptr, "");
// custom selectors
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if (element)
{
element->paused = false;
}
// update selector
tHashUpdateEntry *elementUpdate = nullptr;
HASH_FIND_PTR(_hashForUpdates, &target, elementUpdate);
if (elementUpdate)
{
CCASSERT(elementUpdate->entry != nullptr, "");
elementUpdate->entry->paused = false;
}
}
void Scheduler::pauseTarget(void *target)
{
CCASSERT(target != nullptr, "");
// custom selectors
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if (element)
{
element->paused = true;
}
// update selector
tHashUpdateEntry *elementUpdate = nullptr;
HASH_FIND_PTR(_hashForUpdates, &target, elementUpdate);
if (elementUpdate)
{
CCASSERT(elementUpdate->entry != nullptr, "");
elementUpdate->entry->paused = true;
}
}
bool Scheduler::isTargetPaused(void *target)
{
CCASSERT( target != nullptr, "target must be non nil" );
// Custom selectors
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if( element )
{
return element->paused;
}
// We should check update selectors if target does not have custom selectors
tHashUpdateEntry *elementUpdate = nullptr;
HASH_FIND_PTR(_hashForUpdates, &target, elementUpdate);
if ( elementUpdate )
{
return elementUpdate->entry->paused;
}
return false; // should never get here
}
std::set<void*> Scheduler::pauseAllTargets()
{
return pauseAllTargetsWithMinPriority(PRIORITY_SYSTEM);
}
std::set<void*> Scheduler::pauseAllTargetsWithMinPriority(int minPriority)
{
std::set<void*> idsWithSelectors;
// Custom Selectors
for(tHashTimerEntry *element = _hashForTimers; element != nullptr;
element = (tHashTimerEntry*)element->hh.next)
{
element->paused = true;
idsWithSelectors.insert(element->target);
}
// Updates selectors
tListEntry *entry, *tmp;
if(minPriority < 0)
{
DL_FOREACH_SAFE( _updatesNegList, entry, tmp )
{
if(entry->priority >= minPriority)
{
entry->paused = true;
idsWithSelectors.insert(entry->target);
}
}
}
if(minPriority <= 0)
{
DL_FOREACH_SAFE( _updates0List, entry, tmp )
{
entry->paused = true;
idsWithSelectors.insert(entry->target);
}
}
DL_FOREACH_SAFE( _updatesPosList, entry, tmp )
{
if(entry->priority >= minPriority)
{
entry->paused = true;
idsWithSelectors.insert(entry->target);
}
}
return idsWithSelectors;
}
void Scheduler::resumeTargets(const std::set<void*>& targetsToResume)
{
for(const auto &obj : targetsToResume) {
this->resumeTarget(obj);
}
}
void Scheduler::performFunctionInCocosThread(const std::function<void ()> &function)
{
_performMutex.lock();
_functionsToPerform.push_back(function);
_performMutex.unlock();
}
// main loop
void Scheduler::update(float dt)
{
_updateHashLocked = true;
if (_timeScale != 1.0f)
{
dt *= _timeScale;
}
//
// Selector callbacks
//
// Iterate over all the Updates' selectors
tListEntry *entry, *tmp;
// updates with priority < 0
DL_FOREACH_SAFE(_updatesNegList, entry, tmp)
{
if ((! entry->paused) && (! entry->markedForDeletion))
{
entry->callback(dt);
}
}
// updates with priority == 0
DL_FOREACH_SAFE(_updates0List, entry, tmp)
{
if ((! entry->paused) && (! entry->markedForDeletion))
{
entry->callback(dt);
}
}
// updates with priority > 0
DL_FOREACH_SAFE(_updatesPosList, entry, tmp)
{
if ((! entry->paused) && (! entry->markedForDeletion))
{
entry->callback(dt);
}
}
// Iterate over all the custom selectors
for (tHashTimerEntry *elt = _hashForTimers; elt != nullptr; )
{
_currentTarget = elt;
_currentTargetSalvaged = false;
if (! _currentTarget->paused)
{
// The 'timers' array may change while inside this loop
for (elt->timerIndex = 0; elt->timerIndex < elt->timers->num; ++(elt->timerIndex))
{
elt->currentTimer = (Timer*)(elt->timers->arr[elt->timerIndex]);
elt->currentTimerSalvaged = false;
elt->currentTimer->update(dt);
if (elt->currentTimerSalvaged)
{
// The currentTimer told the remove itself. To prevent the timer from
// accidentally deallocating itself before finishing its step, we retained
// it. Now that step is done, it's safe to release it.
elt->currentTimer->release();
}
elt->currentTimer = nullptr;
}
}
// elt, at this moment, is still valid
// so it is safe to ask this here (issue #490)
elt = (tHashTimerEntry *)elt->hh.next;
// only delete currentTarget if no actions were scheduled during the cycle (issue #481)
if (_currentTargetSalvaged && _currentTarget->timers->num == 0)
{
removeHashElement(_currentTarget);
}
}
// delete all updates that are marked for deletion
// updates with priority < 0
DL_FOREACH_SAFE(_updatesNegList, entry, tmp)
{
if (entry->markedForDeletion)
{
this->removeUpdateFromHash(entry);
}
}
// updates with priority == 0
DL_FOREACH_SAFE(_updates0List, entry, tmp)
{
if (entry->markedForDeletion)
{
this->removeUpdateFromHash(entry);
}
}
// updates with priority > 0
DL_FOREACH_SAFE(_updatesPosList, entry, tmp)
{
if (entry->markedForDeletion)
{
this->removeUpdateFromHash(entry);
}
}
_updateHashLocked = false;
_currentTarget = nullptr;
#if CC_ENABLE_SCRIPT_BINDING
//
// Script callbacks
//
// Iterate over all the script callbacks
if (!_scriptHandlerEntries.empty())
{
for (auto i = _scriptHandlerEntries.size() - 1; i >= 0; i--)
{
SchedulerScriptHandlerEntry* eachEntry = _scriptHandlerEntries.at(i);
if (eachEntry->isMarkedForDeletion())
{
_scriptHandlerEntries.erase(i);
}
else if (!eachEntry->isPaused())
{
eachEntry->getTimer()->update(dt);
}
}
}
#endif
//
// Functions allocated from another thread
//
// Testing size is faster than locking / unlocking.
// And almost never there will be functions scheduled to be called.
if( !_functionsToPerform.empty() ) {
_performMutex.lock();
// fixed #4123: Save the callback functions, they must be invoked after '_performMutex.unlock()', otherwise if new functions are added in callback, it will cause thread deadlock.
auto temp = _functionsToPerform;
_functionsToPerform.clear();
_performMutex.unlock();
for( const auto &function : temp ) {
function();
}
}
}
void Scheduler::schedule(SEL_SCHEDULE selector, Ref *target, float interval, unsigned int repeat, float delay, bool paused)
{
CCASSERT(target, "Argument target must be non-nullptr");
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if (! element)
{
element = (tHashTimerEntry *)calloc(sizeof(*element), 1);
element->target = target;
HASH_ADD_PTR(_hashForTimers, target, element);
// Is this the 1st element ? Then set the pause level to all the selectors of this target
element->paused = paused;
}
else
{
CCASSERT(element->paused == paused, "");
}
if (element->timers == nullptr)
{
element->timers = ccArrayNew(10);
}
else
{
for (int i = 0; i < element->timers->num; ++i)
{
TimerTargetSelector *timer = static_cast<TimerTargetSelector*>(element->timers->arr[i]);
if (selector == timer->getSelector())
{
CCLOG("CCScheduler#scheduleSelector. Selector already scheduled. Updating interval from: %.4f to %.4f", timer->getInterval(), interval);
timer->setInterval(interval);
return;
}
}
ccArrayEnsureExtraCapacity(element->timers, 1);
}
TimerTargetSelector *timer = new TimerTargetSelector();
timer->initWithSelector(this, selector, target, interval, repeat, delay);
ccArrayAppendObject(element->timers, timer);
timer->release();
}
void Scheduler::schedule(SEL_SCHEDULE selector, Ref *target, float interval, bool paused)
{
this->schedule(selector, target, interval, kRepeatForever, 0.0f, paused);
}
bool Scheduler::isScheduled(SEL_SCHEDULE selector, Ref *target)
{
CCASSERT(selector, "Argument selector must be non-nullptr");
CCASSERT(target, "Argument target must be non-nullptr");
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if (!element)
{
return false;
}
if (element->timers == nullptr)
{
return false;
}
else
{
for (int i = 0; i < element->timers->num; ++i)
{
TimerTargetSelector *timer = static_cast<TimerTargetSelector*>(element->timers->arr[i]);
if (selector == timer->getSelector())
{
return true;
}
}
return false;
}
return false; // should never get here
}
void Scheduler::unschedule(SEL_SCHEDULE selector, Ref *target)
{
// explicity handle nil arguments when removing an object
if (target == nullptr || selector == nullptr)
{
return;
}
//CCASSERT(target);
//CCASSERT(selector);
tHashTimerEntry *element = nullptr;
HASH_FIND_PTR(_hashForTimers, &target, element);
if (element)
{
for (int i = 0; i < element->timers->num; ++i)
{
TimerTargetSelector *timer = static_cast<TimerTargetSelector*>(element->timers->arr[i]);
if (selector == timer->getSelector())
{
if (timer == element->currentTimer && (! element->currentTimerSalvaged))
{
element->currentTimer->retain();
element->currentTimerSalvaged = true;
}
ccArrayRemoveObjectAtIndex(element->timers, i, true);
// update timerIndex in case we are in tick:, looping over the actions
if (element->timerIndex >= i)
{
element->timerIndex--;
}
if (element->timers->num == 0)
{
if (_currentTarget == element)
{
_currentTargetSalvaged = true;
}
else
{
removeHashElement(element);
}
}
return;
}
}
}
}
NS_CC_END
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