This is called 'the bounding volume' method in collision dection.
Quote:
Originally posted by Veleno
It would seem to me that it could be possible to have each avatar (and the viewpoint) surrounded with invisible rectangular prisms (or octagonal for a more "round" fit) that follow them wherever they go.
If avatar A gets to close to avatar B, then avatar A will be stopped by the prism surrounding avatar B.
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