"""This module implements a minimum task manager. It is similar in
principle to the full-featured task manager implemented in Task.py,
but it has a sharply reduced feature set--completely bare-bones, in
fact--and it is designed to be a pure-python implementation that does
not require any C++ Panda support, so that it can be loaded before
Panda has been fully downloaded. """
__all__ = ['MiniTask', 'MiniTaskManager']
[docs]class MiniTask:
done = 0
cont = 1
[docs] def __init__(self, callback):
self.__call__ = callback
[docs]class MiniTaskManager:
[docs] def __init__(self):
self.taskList = []
self.running = 0
[docs] def add(self, task, name):
assert isinstance(task, MiniTask)
task.name = name
self.taskList.append(task)
[docs] def remove(self, task):
try:
self.taskList.remove(task)
except ValueError:
pass
def __executeTask(self, task):
return task(task)
[docs] def step(self):
i = 0
while i < len(self.taskList):
task = self.taskList[i]
ret = task(task)
# See if the task is done
if ret == task.cont:
# Leave it for next frame, its not done yet
pass
else:
# Remove the task
try:
self.taskList.remove(task)
except ValueError:
pass
# Do not increment the iterator
continue
# Move to the next element
i += 1
[docs] def run(self):
self.running = 1
while self.running:
self.step()
[docs] def stop(self):
# Set a flag so we will stop before beginning next frame
self.running = 0
