def column_count

bendvy-ecs-core@0.1.0.4 · ordinary_schema_provision.bend:21

import Base
import entity_key.bend as Key
import bendvy-ecs-core@0.1.0.4/world.bend as W
import bendvy-ecs-core@0.1.0.4/column.bend as Col

21def column_count(~S:Data,~P:Type,handles:List<&2,W.Handle<S>>,column:Col.Column<S,P>,total:U32) -> Col.Column<S,P> & U32:
22  match handles:
23    case []:(column,total)
24    case W.Handle{_,Key.EntityKey{id,_}} <> rest:counted(~S,~P,total,Col.has(~S,~P,column,id),column => total => column_count(~S,~P,rest,column,total))