一些山脉是由于这些板块相互碰撞,迫使板块边缘的岩石向上移动而形成的。
Some mountains were formed as a result of these plates crashing into each other and forcing up the rock at the plate margins.
现在检验和屏幕边缘还有挡板的碰撞是否是期望的那样。
Here you check if the collisions happen with the screen borders and paddle as expected.
我有两个正方形画在屏幕上,我怎么能检测到碰撞对象的边缘?。
I have two squares drawn on the screen, how can I detect collision on the edges of both objects?
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