Panda3d globalClock.getDt()函数不起作用，需要导入什么吗？

Question

我一直在看一个关于如何使用Panda3d的tutorial。我不能让globalClock在Pycharm中没有红色的曲折。我想要一些帮助；我需要导入一些东西吗？下面是我的代码：

from panda3d.core import loadPrcFileData


confVars = """
win-size 1280 720
window-title My Game
cursor-hidden false
show-frame-rate-meter 1
show-scene-graph-analyzer-meter 1
undecorated
"""
loadPrcFileData("", confVars)

class myGame(ShowBase):
    def __init__(self):
        super().__init__(self)

        self.jack = self.loader.loadModel("models/jack")
        self.jack.reparentTo(self.render)
        self.x = 0
        self.speed = 2
        self.angle = 0

    def update(self, task):
        dt = globalClock.getDt()
        self.angle = 0
        self.x = self.speed = dt
        return task.cont

Answer 1

import direct.showbase.ShowBaseGlobal

dt = direct.showbase.ShowBaseGlobal.globalClock.getDt()

或

from direct.showbase.ShowBaseGlobal import globalClock

dt = globalClock.getDt()