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<div class="" style="word-wrap:break-word; line-break:after-white-space">Some of my students are making car race games. They came up with a way to do player control or the car using the COMBINE option on the keyboard event with a move forward duration 1. It
actually has a very nice feel of acceleration, because the combined movement instructions stack up until a max speed is hit due to the fixed frame rate.
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<div class="">However, something weird happens when you set the camera’s vehicle property to the car. The screen flickers as the camera accelerates. I’m attaching an Alice program that exhibits the behavior. Use up arrow to move forward and right arrow to turn.
The flicker occurs sporadically, but more frequently if you try turning. The flicker also happens just moving the camera, so it does not seem to be connected to the vehicle. But the vehicle makes it worse, it seems.</div>
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<div class="">Alice 3.6.0.1 +build .500</div>
<div class="">MacOS Mojave 10.14.6</div>
<div class="">Intel Core i7</div>
<div class="">Intel Iris Pro graphics</div>
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<div class="">James<br class="">
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—<br class="">
James Vanderhyde<br class="">
Associate Professor and Department Chair</div>
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Computer Science<br class="">
Saint Xavier University<br class="">
3700 W. 103rd St.<br class="">
Chicago, IL 60655<br class="">
773-298-3454</div>
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