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Add world_exists

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Ukendio 2025-04-26 15:42:20 +02:00
parent 1225f205a8
commit 7d4d67f38b
1 changed files with 18 additions and 9 deletions
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jecs.luau
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@ -1437,19 +1437,24 @@ local function world_delete(world: ecs_world_t, entity: i53)
end end
local dense_array = entity_index.dense_array local dense_array = entity_index.dense_array
local index_of_deleted_entity = record.dense local dense = record.dense
local index_of_last_alive_entity = entity_index.alive_count local i_swap = entity_index.alive_count
entity_index.alive_count = index_of_last_alive_entity - 1 entity_index.alive_count = i_swap - 1
local last_alive_entity = dense_array[index_of_last_alive_entity] local e_swap = dense_array[i_swap]
local r_swap = entity_index_try_get_any(entity_index, last_alive_entity) :: ecs_record_t local r_swap = entity_index_try_get_any(entity_index, e_swap) :: ecs_record_t
r_swap.dense = index_of_deleted_entity
r_swap.dense = dense
record.archetype = nil :: any record.archetype = nil :: any
record.row = nil :: any record.row = nil :: any
record.dense = index_of_last_alive_entity record.dense = i_swap
dense_array[index_of_deleted_entity] = last_alive_entity dense_array[dense] = e_swap
dense_array[index_of_last_alive_entity] = ECS_GENERATION_INC(entity) dense_array[i_swap] = ECS_GENERATION_INC(entity)
end
local function world_exists(world, ecs_world_t, entity): boolean
return entity_index_try_get_any(world.entity_index, entity) ~= nil
end end
local function world_contains(world: ecs_world_t, entity): boolean local function world_contains(world: ecs_world_t, entity): boolean
@ -2443,6 +2448,7 @@ World.has = world_has
World.target = world_target World.target = world_target
World.parent = world_parent World.parent = world_parent
World.contains = world_contains World.contains = world_contains
World.exists = world_exists
World.cleanup = world_cleanup World.cleanup = world_cleanup
World.each = world_each World.each = world_each
World.children = world_children World.children = world_children
@ -2610,6 +2616,9 @@ export type World = {
--- Checks if the world contains the given entity --- Checks if the world contains the given entity
contains:(self: World, entity: Entity) -> boolean, contains:(self: World, entity: Entity) -> boolean,
--- Checks if the entity exists
exists: (self: World, entity: Entity) -> boolean,
each: <T>(self: World, id: Id<T>) -> () -> Entity, each: <T>(self: World, id: Id<T>) -> () -> Entity,
children: <T>(self: World, id: Id<T>) -> () -> Entity, children: <T>(self: World, id: Id<T>) -> () -> Entity,