Exemplo n.º 1
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    def update(self, delta_frames=1):
        """Update the PipePair's position.

        Arguments:
        delta_frames: The number of frames elapsed since this method was
            last called.
        """
        self.x -= ANIMATION_SPEED * frames_to_msec(delta_frames)
Exemplo n.º 2
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    def update(self, delta_frames=1):
        """Update the PipePair's position.

        Arguments:
        delta_frames: The number of frames elapsed since this method was
            last called.
        """
        self.x -= ANIMATION_SPEED * frames_to_msec(delta_frames)
Exemplo n.º 3
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    def update(self, delta_frames=1):
        """Update the bird's position.

        This function uses the cosine function to achieve a smooth climb:
        In the first and last few frames, the bird climbs very little, in the
        middle of the climb, it climbs a lot.
        One complete climb lasts CLIMB_DURATION milliseconds, during which
        the bird ascends with an average speed of CLIMB_SPEED px/ms.
        This Bird's msec_to_climb attribute will automatically be
        decreased accordingly if it was > 0 when this method was called.

        Arguments:
        delta_frames: The number of frames elapsed since this method was
            last called.
        """
        if self.msec_to_climb > 0:
            frac_climb_done = 1 - self.msec_to_climb / Bird.CLIMB_DURATION
            self.y -= (Bird.CLIMB_SPEED * frames_to_msec(delta_frames) *
                       (1 - math.cos(frac_climb_done * math.pi)))
            self.msec_to_climb -= frames_to_msec(delta_frames)
        else:
            self.y += Bird.SINK_SPEED * frames_to_msec(delta_frames)
Exemplo n.º 4
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    def update(self, delta_frames=1):
        """Update the bird's position.

        This function uses the cosine function to achieve a smooth climb:
        In the first and last few frames, the bird climbs very little, in the
        middle of the climb, it climbs a lot.
        One complete climb lasts CLIMB_DURATION milliseconds, during which
        the bird ascends with an average speed of CLIMB_SPEED px/ms.
        This Bird's msec_to_climb attribute will automatically be
        decreased accordingly if it was > 0 when this method was called.

        Arguments:
        delta_frames: The number of frames elapsed since this method was
            last called.
        """
        if self.msec_to_climb > 0:
            frac_climb_done = 1 - self.msec_to_climb / Bird.CLIMB_DURATION
            self.y -= (Bird.CLIMB_SPEED * frames_to_msec(delta_frames) *
                       (1 - math.cos(frac_climb_done * math.pi)))
            self.msec_to_climb -= frames_to_msec(delta_frames)
        else:
            self.y += Bird.SINK_SPEED * frames_to_msec(delta_frames)