diff --git a/jecs.luau b/jecs.luau index ce9e63d..b7dae17 100644 --- a/jecs.luau +++ b/jecs.luau @@ -116,13 +116,47 @@ local ECS_ID_MASK = 0b00 local ECS_ENTITY_MASK = bit32.lshift(1, 24) local ECS_GENERATION_MASK = bit32.lshift(1, 16) -local NULL_ARRAY = table.freeze({}) +local NULL_ARRAY = table.freeze({}) :: Column +local NULL = newproxy(false) + local ECS_INTERNAL_ERROR = [[ This is an internal error, please file a bug report via the following link: https://github.com/Ukendio/jecs/issues/new?template=BUG-REPORT.md ]] +local ecs_metadata: Map> = {} +local ecs_max_component_id = 0 +local ecs_max_tag_id = EcsRest + +local function ECS_COMPONENT() + ecs_max_component_id += 1 + if ecs_max_component_id > HI_COMPONENT_ID then + error("Too many components") + end + return ecs_max_component_id +end + +local function ECS_TAG() + ecs_max_tag_id += 1 + return ecs_max_tag_id +end + +local function ECS_META(id: i53, ty: i53, value: any?) + local bundle = ecs_metadata[id] + if bundle then + bundle = {} + ecs_metadata[id] = bundle + end + bundle[ty] = if value == nil then NULL else value +end + +local function ECS_META_RESET() + ecs_metadata = {} + ecs_max_component_id = 0 + ecs_max_tag_id = EcsRest +end + local function ECS_COMBINE(id: number, generation: number): i53 return id + (generation * ECS_ENTITY_MASK) end @@ -529,62 +563,64 @@ end local function id_record_ensure(world: ecs_world_t, id: number): ecs_id_record_t local component_index = world.component_index local entity_index = world.entity_index - local idr: ecs_id_record_t = component_index[id] + local idr: ecs_id_record_t? = component_index[id] - if not idr then - local flags = ECS_ID_MASK - local relation = id - local target = 0 - local is_pair = ECS_IS_PAIR(id) - if is_pair then - relation = entity_index_get_alive(entity_index, ECS_PAIR_FIRST(id)) :: i53 - assert(relation and entity_index_is_alive( - entity_index, relation), ECS_INTERNAL_ERROR) - target = entity_index_get_alive(entity_index, ECS_PAIR_SECOND(id)) :: i53 - assert(target and entity_index_is_alive( - entity_index, target), ECS_INTERNAL_ERROR) - end - - local cleanup_policy = world_target(world, relation, EcsOnDelete, 0) - local cleanup_policy_target = world_target(world, relation, EcsOnDeleteTarget, 0) - - local has_delete = false - - if cleanup_policy == EcsDelete or cleanup_policy_target == EcsDelete then - has_delete = true - end - - local on_add, on_change, on_remove = world_get(world, - relation, EcsOnAdd, EcsOnChange, EcsOnRemove) - - local is_tag = not world_has_one_inline(world, - relation, EcsComponent) - - if is_tag and is_pair then - is_tag = not world_has_one_inline(world, target, EcsComponent) - end - - flags = bit32.bor( - flags, - if has_delete then ECS_ID_DELETE else 0, - if is_tag then ECS_ID_IS_TAG else 0 - ) - - idr = { - size = 0, - cache = {}, - counts = {}, - flags = flags, - hooks = { - on_add = on_add, - on_change = on_change, - on_remove = on_remove, - }, - } - - component_index[id] = idr + if idr then + return idr end + local flags = ECS_ID_MASK + local relation = id + local target = 0 + local is_pair = ECS_IS_PAIR(id) + if is_pair then + relation = entity_index_get_alive(entity_index, ECS_PAIR_FIRST(id)) :: i53 + assert(relation and entity_index_is_alive( + entity_index, relation), ECS_INTERNAL_ERROR) + target = entity_index_get_alive(entity_index, ECS_PAIR_SECOND(id)) :: i53 + assert(target and entity_index_is_alive( + entity_index, target), ECS_INTERNAL_ERROR) + end + + local cleanup_policy = world_target(world, relation, EcsOnDelete, 0) + local cleanup_policy_target = world_target(world, relation, EcsOnDeleteTarget, 0) + + local has_delete = false + + if cleanup_policy == EcsDelete or cleanup_policy_target == EcsDelete then + has_delete = true + end + + local on_add, on_change, on_remove = world_get(world, + relation, EcsOnAdd, EcsOnChange, EcsOnRemove) + + local is_tag = not world_has_one_inline(world, + relation, EcsComponent) + + if is_tag and is_pair then + is_tag = not world_has_one_inline(world, target, EcsComponent) + end + + flags = bit32.bor( + flags, + if has_delete then ECS_ID_DELETE else 0, + if is_tag then ECS_ID_IS_TAG else 0 + ) + + idr = { + size = 0, + cache = {}, + counts = {}, + flags = flags, + hooks = { + on_add = on_add, + on_change = on_change, + on_remove = on_remove, + }, + } :: ecs_id_record_t + + component_index[id] = idr + return idr end @@ -621,7 +657,7 @@ local function archetype_create(world: ecs_world_t, id_types: { i24 }, ty, prev: local columns = (table.create(length) :: any) :: { Column } local records: { number } = {} - local counts: {number} = {} + local counts: { number } = {} local archetype: ecs_archetype_t = { columns = columns, @@ -670,7 +706,7 @@ local function archetype_create(world: ecs_world_t, id_types: { i24 }, ty, prev: world.archetype_index[ty] = archetype world.archetypes[archetype_id] = archetype - world.archetype_edges[archetype.id] = {} + world.archetype_edges[archetype.id] = {} :: Map return archetype end @@ -747,17 +783,17 @@ local function archetype_traverse_remove( local edges = world.archetype_edges local edge = edges[from.id] - local to = edge[id] - if not to then + local to: ecs_archetype_t = edge[id] + if to == nil then to = find_archetype_without(world, from, id) edge[id] = to edges[to.id][id] = from end - return to :: ecs_archetype_t + return to end -local function find_archetype_with(world, id, from) +local function find_archetype_with(world, id, from): ecs_archetype_t local id_types = from.types local at = find_insert(id_types, id) @@ -767,7 +803,7 @@ local function find_archetype_with(world, id, from) return archetype_ensure(world, dst) end -local function archetype_traverse_add(world, id, from: ecs_archetype_t) +local function archetype_traverse_add(world, id, from: ecs_archetype_t): ecs_archetype_t from = from or world.ROOT_ARCHETYPE if from.records[id] then return from @@ -830,7 +866,7 @@ local function world_set(world: ecs_world_t, entity: i53, id: i53, data: unknown local idr_hooks = idr.hooks if from == to then - local tr = to.records[id] + local tr = (to :: ecs_archetype_t).records[id] local column = from.columns[tr] column[record.row] = data @@ -984,8 +1020,8 @@ local function world_clear(world: ecs_world_t, entity: i53) end if idr_t then - local queue - local ids + local queue: { i53 } + local ids: Map local count = 0 local archetype_ids = idr_t.cache @@ -1175,8 +1211,8 @@ local function world_delete(world: ecs_world_t, entity: i53) end if idr_t then - local children - local ids + local children: { i53 } + local ids: Map local count = 0 local archetype_ids = idr_t.cache @@ -1240,7 +1276,7 @@ local function world_delete(world: ecs_world_t, entity: i53) if idr_r then local archetype_ids = idr_r.cache local flags = idr_r.flags - if bit32.band(flags, ECS_ID_DELETE) ~= 0 then + if (bit32.band(flags, ECS_ID_DELETE) :: number) ~= 0 then for archetype_id in archetype_ids do local idr_r_archetype = archetypes[archetype_id] local entities = idr_r_archetype.entities @@ -1754,7 +1790,7 @@ local function query_cached(query: ecs_query_data_t) local observable = world.observable :: ecs_observable_t local on_create_action = observable[EcsOnArchetypeCreate] if not on_create_action then - on_create_action = {} + on_create_action = {} :: Map observable[EcsOnArchetypeCreate] = on_create_action end local query_cache_on_create = on_create_action[A] @@ -1765,7 +1801,7 @@ local function query_cached(query: ecs_query_data_t) local on_delete_action = observable[EcsOnArchetypeDelete] if not on_delete_action then - on_delete_action = {} + on_delete_action = {} :: Map observable[EcsOnArchetypeDelete] = on_delete_action end local query_cache_on_delete = on_delete_action[A] @@ -2168,12 +2204,12 @@ local function world_query(world: ecs_world_t, ...) return q end - if idr == nil or map.size < idr.size then + if idr == nil or (map.size :: number) < (idr.size :: number) then idr = map end end - if not idr then + if idr == nil then return q end @@ -2306,7 +2342,7 @@ local function world_new() ROOT_ARCHETYPE = (nil :: any) :: Archetype, max_archetype_id = 0, - max_component_id = 0, + max_component_id = ecs_max_component_id, observable = {} :: Observable, }, World) :: any @@ -2323,6 +2359,21 @@ local function world_new() entity_index_new_id(entity_index) end + for i = EcsRest + 1, ecs_max_tag_id do + -- Initialize built-in components + entity_index_new_id(entity_index) + end + + for i, bundle in ecs_metadata do + for ty, value in bundle do + if value == NULL then + world_add(self, i, ty) + else + world_set(self, i, ty, value) + end + end + end + world_add(self, EcsName, EcsComponent) world_add(self, EcsOnChange, EcsComponent) world_add(self, EcsOnAdd, EcsComponent) @@ -2350,22 +2401,25 @@ end World.new = world_new -export type Entity = { __T: T } -export type Id = { __T: T } +export type Entity = { __T: T } +export type Id = { __T: T } export type Pair = Id

type ecs_id_t = Id | Pair | Pair<"Tag", T> export type Item = (self: Query) -> (Entity, T...) export type Iter = (query: Query) -> () -> (Entity, T...) -export type Query = typeof(setmetatable({}, { - __iter = (nil :: any) :: Iter, -})) & { - iter: Iter, - with: (self: Query, ...Id) -> Query, - without: (self: Query, ...Id) -> Query, - archetypes: (self: Query) -> { Archetype }, - cached: (self: Query) -> Query, -} +export type Query = typeof(setmetatable( + {} :: { + iter: Iter, + with: (self: Query, ...Id) -> Query, + without: (self: Query, ...Id) -> Query, + archetypes: (self: Query) -> { Archetype }, + cached: (self: Query) -> Query, + }, + {} :: { + __iter: Iter + } +)) export type Observer = { callback: (archetype: Archetype) -> (), @@ -2399,20 +2453,20 @@ export type World = { component: (self: World) -> Entity, --- Gets the target of an relationship. For example, when a user calls --- `world:target(id, ChildOf(parent), 0)`, you will obtain the parent entity. - target: (self: World, id: Entity, relation: Id, index: number?) -> Entity?, + target: (self: World, id: Entity, relation: Id, index: number?) -> Entity?, --- Deletes an entity and all it's related components and relationships. delete: (self: World, id: Entity) -> (), --- Adds a component to the entity with no value - add: (self: World, id: Entity, component: Id) -> (), + add: (self: World, id: Entity, component: Id) -> (), --- Assigns a value to a component on the given entity set: (self: World, id: Entity, component: Id, data: T) -> (), cleanup: (self: World) -> (), -- Clears an entity from the world - clear: (self: World, id: Entity) -> (), + clear: (self: World, id: Id) -> (), --- Removes a component from the given entity - remove: (self: World, id: Entity, component: Id) -> (), + remove: (self: World, id: Entity, component: Id) -> (), --- Retrieves the value of up to 4 components. These values may be nil. get: ((self: World, id: Entity, Id) -> A?) & ((self: World, id: Entity, Id, Id) -> (A?, B?)) @@ -2431,9 +2485,9 @@ export type World = { --- Checks if the world contains the given entity contains:(self: World, entity: Entity) -> boolean, - each: (self: World, id: Id) -> () -> Entity, + each: (self: World, id: Id) -> () -> Entity, - children: (self: World, id: Id) -> () -> Entity, + children: (self: World, id: Id) -> () -> Entity, --- Searches the world for entities that match a given query query: ((World, Id) -> Query) @@ -2461,10 +2515,14 @@ export type World = { -- return first -- end -- end +-- return { World = World :: { new: () -> World }, world = world_new :: () -> World, + component = (ECS_COMPONENT :: any) :: () -> Entity, + tag = (ECS_TAG :: any) :: () -> Entity, + meta = (ECS_META :: any) :: (id: Entity, id: Id, value: T) -> Entity, OnAdd = EcsOnAdd :: Entity<(entity: Entity) -> ()>, OnRemove = EcsOnRemove :: Entity<(entity: Entity) -> ()>, @@ -2487,8 +2545,8 @@ return { ECS_GENERATION_INC = ECS_GENERATION_INC, ECS_GENERATION = ECS_GENERATION, ECS_ID_IS_WILDCARD = ECS_ID_IS_WILDCARD, - ECS_ID_DELETE = ECS_ID_DELETE, + ECS_META_RESET = ECS_META_RESET, IS_PAIR = (ECS_IS_PAIR :: any) :: (pair: Pair) -> boolean, pair_first = (ecs_pair_first :: any) :: (world: World, pair: Pair) -> Id

, diff --git a/test/tests.luau b/test/tests.luau index cb95c90..f4c1b78 100644 --- a/test/tests.luau +++ b/test/tests.luau @@ -62,8 +62,8 @@ end) TEST("world:children()", function() local world = jecs.world() - local C = world:component() - local T = world:entity() + local C = jecs.component() + local T = jecs.tag() local e1 = world:entity() world:set(e1, C, true) @@ -95,6 +95,8 @@ TEST("world:children()", function() end CHECK(count == 1) + + jecs.ECS_META_RESET() end) TEST("world:clear()", function() @@ -195,6 +197,26 @@ TEST("world:clear()", function() end) TEST("world:component()", function() + do CASE "allow IDs to be registered" + local A = jecs.component() + local B = jecs.component() + + local world = jecs.world() + local C = world:component() + CHECK((A :: any) == 1) + CHECK((B :: any) == 2) + CHECK((C :: any) == 3) + + local e = world:entity() + + world:set(e, A, "foo") + world:set(e, B, "foo") + world:set(e, C, "foo") + + CHECK(world:has(e, A, B, C)) + + jecs.ECS_META_RESET() -- Reset the ECS metadata because they may have side effects + end do CASE "only components should have EcsComponent trait" local world = jecs.world() local A = world:component() @@ -720,21 +742,21 @@ TEST("world:query()", function() local i = 0 local iter = 0 - for _, e in q:iter() do + for _ in q:iter() do iter += 1 i=1 end CHECK (iter == 1) CHECK(i == 1) - for _, e in q:iter() do + for _ in q:iter() do i=2 end CHECK(i == 2) - for _, e in q :: any do + for _ in q do i=3 end CHECK(i == 3) - for _, e in q :: any do + for _ in q do i=4 end CHECK(i == 4) @@ -746,8 +768,8 @@ TEST("world:query()", function() end do CASE "multiple iter" local world = jecs.World.new() - local A = world:component() - local B = world:component() + local A = world:component() :: jecs.Entity + local B = world:component() :: jecs.Entity local e = world:entity() world:add(e, A) world:add(e, B) @@ -756,7 +778,7 @@ TEST("world:query()", function() for x in q:iter() do counter += 1 end - for x in q:iter() do + for x, tets in q do counter += 1 end CHECK(counter == 2)