Moduleapecs-0.10.1Haskell2010

Apecs.Util

Utility

2 declarations

valuerunGC :: MonadIO m => SystemT w m ()

Explicitly invoke the garbage collector

valueglobal :: Entity

Convenience entity, for use in places where the entity value does not matter, i.e. a global store.

6 declarations

newtypenewtype EntityCounter

Component used by newEntity to track the number of issued entities. Automatically added to any world created with makeWorld

Instances6Eq, Show, Semigroup, Monoid, Component, Storage

Eq EntityCounterDefined in apecs-0.10.1 · Apecs.Util
Show EntityCounterDefined in apecs-0.10.1 · Apecs.Util
Semigroup EntityCounterDefined in apecs-0.10.1 · Apecs.Util
Monoid EntityCounterDefined in apecs-0.10.1 · Apecs.Util
Component EntityCounterDefined in apecs-0.10.1 · Apecs.Util
type Storage EntityCounter = ReadOnly (Global EntityCounter)Defined in apecs-0.10.1 · Apecs.Util

valuenextEntity :: (MonadIO m, Get w m EntityCounter) => SystemT w m Entity

Bumps the EntityCounter and yields its value.

Not thread-safe.

valuenewEntity

Writes the given components to a new entity, and yields that entity. The return value is often ignored.

valuenewEntity_

Writes the given components to a new entity without yelding the result. Used mostly for convenience.

valuenextEntityIO :: Has w IO EntityCounter => SystemT w IO Entity

Atomically bumps the EntityCounter and yields its value. Relatively slower than nextEntity, but unsafeIOToSTM-safe.

familytype family Maybify t where

Wrap tuple elements in Maybe.

This allows to safely get component packs generated by makeInstanceFold mkTupleT.