Merge f912866fcb into 0b6bfea5c8

jecs.luau

@@ -118,6 +118,8 @@ type world = {
 
 	max_component_id: number,
 	max_archetype_id: number,
+    start_component_id: number,
+    start_tag_id: number,
 
 	observable: Map<i53, Map<i53, { Observer }>>,
 
@@ -155,6 +157,8 @@ export type World = {
 
 	max_component_id: number,
 	max_archetype_id: number,
+    start_component_id: number,
+    start_tag_id: number,
 
 	observable: Map<Id, Map<Id, { Observer }>>,
 
@@ -733,7 +737,7 @@ local function world_target(world: world, entity: i53, relation: i53, index: num
 	local nth = index or 0
 
 	if nth >= count then
-		nth = nth + count + 1
+		return nil
 	end
 
 	nth = archetype.types[nth + idr.records[archetype_id]]
@@ -752,6 +756,12 @@ local function ECS_ID_IS_WILDCARD(e: i53): boolean
 	return first == EcsWildcard or second == EcsWildcard
 end
 
+local function get_max_ids_difference(world: World): (number, number)
+    local diff_components = world.start_component_id - ecs_max_component_id
+    local diff_tags = world.start_tag_id - ecs_max_tag_id
+    return diff_components, diff_tags
+end
+
 local function id_record_get(world: World, id: Entity): ComponentRecord?
 	local component_index = world.component_index
 	local idr: ComponentRecord = component_index[id]
@@ -879,6 +889,7 @@ local function archetype_create(world: world, id_types: { i53 }, ty, prev: i53?)
 
 	for i, component_id in archetype.types do
 		local idr = id_record_ensure(world, component_id)
+		idr.size += 1
 		local is_tag = bit32.btest(idr.flags, ECS_ID_IS_TAG)
 		local column = if is_tag then NULL_ARRAY else {}
 		columns[i] = column
@@ -890,11 +901,13 @@ local function archetype_create(world: world, id_types: { i53 }, ty, prev: i53?)
 			local object = ECS_PAIR_SECOND(component_id)
 			local r = ECS_PAIR(relation, EcsWildcard)
 			local idr_r = id_record_ensure(world, r)
+			idr_r.size += 1
 
 			archetype_append_to_records(idr_r, archetype_id, columns_map, r, i, column)
 
 			local t = ECS_PAIR(EcsWildcard, object)
 			local idr_t = id_record_ensure(world, t)
+			idr_t.size += 1
 
 			archetype_append_to_records(idr_t, archetype_id, columns_map, t, i, column)
 		end
@@ -2250,6 +2263,9 @@ local function world_new()
 		max_archetype_id = 0,
 		max_component_id = ecs_max_component_id,
         
+        start_component_id = ecs_max_component_id,
+        start_tag_id = ecs_max_tag_id,
+
 		observable = observable,
 		signals = signals,
 	} :: world
@@ -2756,7 +2772,7 @@ local function world_new()
 		local nth = index or 0
 
 		if nth >= count then
-			nth = nth + count + 1
+			return nil
 		end
 
 		nth = archetype.types[nth + idr.records[archetype_id]]
@@ -3313,6 +3329,7 @@ return {
 	pair_first = ecs_pair_first :: <P, O>(world: World, pair: Pair<P, O>) -> Id<P>,
 	pair_second = ecs_pair_second :: <P, O>(world: World, pair: Pair<P, O>) -> Id<O>,
 	entity_index_get_alive = entity_index_get_alive,
+    get_max_ids_difference = get_max_ids_difference,
 
 	archetype_append_to_records = archetype_append_to_records,
 	id_record_ensure = id_record_ensure :: (World, Id) -> ComponentRecord,