Sparse Components (non-movable components)

[Ukendio]

Non-movable components, that when inserted goes into the sparse set storage. The sparse component itself does not need to be moved to the destination archetype during insertion.

Benefits

• Doesn't need to move the sparse component itself so slightly faster removals and insertions
• Fast iteration of single sparse components since it should just iterate over the densely packed pool/column

Drawbacks

• Explicit storage specification
• Queries of sparse components are always slower than archetype queries except for two scenarios:

1. if the query is just interested in a single sparse component (just iterate the dense array of the sparse set)
2. if fragmentation is very high (like 1-2 entities per archetype, and lots of archetypes)