Use a reserved "Default" layer for memberships in InteractionGroups
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…le bit for memberships
src/geometry/interaction_groups.rs
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| /// The default group. | ||
| const DEFAULT = 1 << 0; | ||
| /// The group n°1. | ||
| const GROUP_1 = 1 << 0; |
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Not sure I agree on shifting those groups though:
- it makes a tedious migrations for users
- javascript bindings will have to adapt (not hard, but tedious/error prone again)
the naming becomes a bit inconsistent, I would prefer DEFAULT and GROUP_1 being the same, or straight up removing DEFAULT, and add that's the default as a comment.
ThierryBerger
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Thanks! |
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Currently the default is to being a member of all groups with a filter/interaction with everything.
I believe this is a bit backwards and makes special interactions between groups harder to understand/deal with without flipping all of your logic to be a "non-membership" or by modifying the interaction groups of every object in your simulation.
This is more in line with what Box2d (one membership, all filter) and Godot (one membership, one filter) do currently,
however there are counterexamples like Unity (all membership, all filter) and the current default.Unity is actually one membership/all filter as well since they do not allow multiple groups to be selected, however they allow configuring the default interactions/filters.There is also an argument of all filter vs one filter as the default, but I do not believe it matters as much as the membership.