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Is there a way to have an object, a ball for example, fall down and bounce up, using rigid body dynamics, but with its movement locked to two axes? So basically that would make for a 2 dimensional simulation.

I tried using a generic rigid body constraint but that doesn't seem to do anything when I lock a single axis. Now I'm faking it by putting the ball between four planes, in a box basically. Although there should be a better way to achieve this.

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Use a copy location constraint on the ball to some other objects x, y coordinate.

enter image description here Ball locked to bounce on plane origin (0, 0, 0)

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