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Add assertion against existing idr
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Ukendio 2025-04-22 04:52:21 +02:00
parent ef0f69ac6d
commit 8822be58a9
1 changed files with 6 additions and 0 deletions
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6
addons/observers.luau
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@ -101,6 +101,8 @@ local function observers_add(world: jecs.World & { [string]: any }): PatchedWorl
world.added = function(_, component, fn) world.added = function(_, component, fn)
local listeners = signals.added[component] local listeners = signals.added[component]
local component_index = world.component_index :: jecs.ComponentIndex
assert(component_index[component] == nil, "You cannot use hooks on components you intend to use this signal with")
if not listeners then if not listeners then
listeners = {} listeners = {}
signals.added[component] = listeners signals.added[component] = listeners
@ -115,6 +117,8 @@ local function observers_add(world: jecs.World & { [string]: any }): PatchedWorl
world.changed = function(_, component, fn) world.changed = function(_, component, fn)
local listeners = signals.emplaced[component] local listeners = signals.emplaced[component]
local component_index = world.component_index :: jecs.ComponentIndex
assert(component_index[component] == nil, "You cannot use hooks on components you intend to use this signal with")
if not listeners then if not listeners then
listeners = {} listeners = {}
signals.emplaced[component] = listeners signals.emplaced[component] = listeners
@ -130,6 +134,8 @@ local function observers_add(world: jecs.World & { [string]: any }): PatchedWorl
world.removed = function(_, component, fn) world.removed = function(_, component, fn)
local listeners = signals.removed[component] local listeners = signals.removed[component]
local component_index = world.component_index :: jecs.ComponentIndex
assert(component_index[component] == nil, "You cannot use hooks on components you intend to use this signal with")
if not listeners then if not listeners then
listeners = {} listeners = {}
signals.removed[component] = listeners signals.removed[component] = listeners