Commit Graph

3 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
b9975f77af Add an EntityRef::wrap() method.
This is the opposite of unwrap(). It converts the ad-hoc null references like
NO_EBB and NO_INST into the more standard Option<Ebb> type which unfortunately
takes twice as much space in data structures.
2016-07-18 14:27:12 -07:00
Jakob Stoklund Olesen
99464bc29d Implement EntityRef for most of the entities module.
The only exception is Value which has two dimensions.
2016-07-15 16:03:14 -07:00
Jakob Stoklund Olesen
191c607bf9 Add an entity_map module.
This supports the pattern of creating structs wrapping a u32 and using them as
indexes into a vector of entities. These entity references should implement the
EntityRef trait.

The EntityMap is a generic map from an EntityRef to some value type. It expects
densely indexed entities and uses a Vec to represent the mapping compactly.
2016-07-15 15:17:11 -07:00