Physics do not conserve energy. Can be more or less.
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#3 Physics do not conserve energy. Can be more or less.
Subwindows bounce off eachother and it looks almost real, but they can bounce slower or faster than they hit. The number of overlapping pixels, and the direction between the centers of the colliding subwindows, are 2 inputs to the collision physics. This may be a result of discrete timing instead of the continuous physics we have in reality. It happens less when the timing is in shorter intervals, but that makes an average computer run slow.
In version 0.7, physics are close enough that they appear to conserve energy.