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Today, I will talk to you about how to use the cocos2dx scheduler scheduler, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following contents for you. I hope you can get something according to this article.

The scheduler (scheduler) mainly provides timing events and timing services for games. It is often used for some timing processing functions of the game, such as logical judgment, collision detection and so on.

Cocos2dx provides three common schedulers (scheduler) for us to use.

Default scheduler (schedulerUpdate)

The default scheduler uses Node's refresh event update method, which is called once before each frame is drawn. Because of the short time interval between each frame, one refresh per frame is enough to complete most of the logical judgments needed in the game.

When we use the default scheduler (schedulerUpdate), we need to overload the update method of Node to execute our own logic code. If you need to stop the scheduler, you can use the unschedulerUpdate () method.

When using it, first rewrite the update method: void update (float dt) in the .h file.

The implementation of update is called directly using the scheduleUpdate () method at the place of call.

Custom Scheduler (scheduler)

Sometimes the scheduler that comes with the engine does not suit our needs, so we need to define the scheduler ourselves. Cocos2dx provides this method.

Schedule (SEL_SCHEDULE selector, float interval, unsigned int repeat, float delay)

The first parameter selector is the event function you want to add.

The second parameter, interval, is the event trigger interval.

The third parameter, repeat, is the number of times it will be triggered after an event is triggered. The default value is kRepeatForever, which means unlimited number of triggers.

The fourth parameter, delay, represents the delay before the first trigger.

Single scheduler (schedulerOnce)

Cocos2d-x also provides a single scheduler, which is scheduled only once.

ScheduleOnce (schedule_selector (HelloWorld::updateOnce), 0.1f)

Here I use LaberTTF to implement a default scheduler that increases by + 1 at a time to dynamically change the value of LabelTTF.

After reading the above, do you have any further understanding of how to use the cocos2dx scheduler scheduler? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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