A component type which does not require a value. This is useful when the mere presence or absence of a component is all the information we need.

For example, if we want a component type to model a boolean attribute, such as whether or not players may target a particular entity, we'll use a Tag:

defmodule MyApp.Components.Targetable do
  use ECSx.Tag
end

Then we can check for targetability with ...Targetable.exists?(entity) or get a list of all targetable entities with ...Targetable.get_all().

options

Options

• :read_concurrency - when true, enables read concurrency for this component table. Only set this if you know what you're doing. Defaults to false