The OverlapParams data type stores parameters for use with WorldRoot boundary-querying functions, in particular WorldRoot:GetPartBoundsInBox(), WorldRoot:GetPartBoundsInRadius() and WorldRoot:GetPartsInPart(). The OverlapParams.FilterDescendantsInstances property stores an array of objects to use as either an inclusion or exclusion list based on the OverlapParams.FilterType enum, and the OverlapParams.CollisionGroup property can specify a collision group for the boundary query operation.
Unlike most data types in Luau, you can change all of the members of OverlapParams without creating a new object, allowing you to reuse the same object repeatedly.
An array of objects whose descendants is used in filtering candidates.
The maximum amount of parts to be returned by the query. The default value of zero (0) represents no limit.
Specifies a collision group for the operation. Parts in collision groups that are set to not collide with this group are ignored. If this property is omitted, the operation assumes the Default collision group.
When enabled, the query will ignore all part collision properties and perform a brute-force check on every part. This will negatively impact performance and should not be used in live experiences.
For efficiency and simplicity, this method is the preferred way to add instances to the filter. It has the additional advantage that it allows FilterDescendantsInstances to be updated from a parallel context.