ecs/query

(for-each [world comps binds body])

truly variadic iteration over the intersection of

Since: E1

(for-each1 [world A1 e v1 body])

thin shim over the variadic for-each.

Since: E1'

(for-each2 [world A1 A2 e v1 v2 body])

thin shim over the variadic for-each.

Since: E1'

(for-each3 [world A1 A2 A3 e v1 v2 v3 body])

thin shim over the variadic for-each.

Since: E1'

(world-tagged? [world Tag e])

true if entity slot idx carries the named tag in the

Since: E1'

(world-untagged? [world Tag e])

inverse of world-tagged?. Sugar for "the entity

Since: E1'

(defstruct Query [^&in ^&out])

row-typed query handle, parameterised by *rows* of input and

Since: E1

(make-query [w : int] :)

wrap a world handle as an *untyped* Query (no row info).

Since: E1

(query-world)

unpack the world handle from a Query value. Returns the

Since: E1

(defquery [name w-sym world-type comps binds body])

name a for-each iteration as a `defn` over a specific

Since: E1

(run-query! [q world])

call a defquery-defined query against a world. Sugar

Since: E1