task.md

Task

Panda3D Native

See the following:

• https://www.panda3d.org/manual/index.php?title=Tasks&language=cxx
• https://www.panda3d.org/manual/index.php?title=Task_Chains&language=cxx

Render Pipeline

See TaskManager in rppanda/task/task_manager.hpp

• Add

class A
{
    AsyncTask::DoneStatus f(FunctionalTask* task);

    void g()
    {
        auto task_mgr = rpcore::Globals::base->get_task_mgr();
        // OR, TaskManager::get_global_instance();

        // using bind
        task_mgr->add(std::bind(&A::f, this, std::placeholders::_1), TASK_NAME);
    }

    void h()
    {
        // using lambda
        TaskManager::get_global_instance()->add([this](rppanda::FunctionalTask* task) {
                g();
                return AsyncTask::DS_cont;
            }, TASK_NAME);
    }

    void i()
    {
        // using lambda and bind to DirectObject instance (ex, ShowBase)
        rpcore::Globals::base->add_task([this](rppanda::FunctionalTask* task) {
                h();
                return AsyncTask::DS_cont;
            }, TASK_NAME);
    }
};

• Add with delay

Use do_method_later function.

• Remove

TaskManager::get_global_instance()->remove(TASK_NAME);
TaskManager::get_global_instance()->remove(TASK_PTR);