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openmw/docs/source/reference/lua-scripting/events.rst
Mads Buvik Sandvei 7143115e57 Doc update
2025-07-05 21:30:51 +02:00

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Events
======
.. include:: version.rst
Actor events
------------
**Died**
This event is sent to an actor's local script when that actor dies.
.. code-block:: Lua
eventHandlers = {
Died = function()
print('Alas, ye hardly knew me!')
end
}
**StartAIPackage, RemoveAIPackages**
Any script can send to any actor (except player, for player will be ignored) events ``StartAIPackage`` and ``RemoveAIPackages``.
The effect is equivalent to calling ``interfaces.AI.startPackage`` or ``interfaces.AI.removePackages`` in a local script on this actor.
Examples:
.. code-block:: Lua
actor:sendEvent('StartAIPackage', {type='Combat', target=self.object})
actor:sendEvent('RemoveAIPackages', 'Pursue')
**UseItem**
Any script can send global event ``UseItem`` with arguments ``object``, ``actor``, and optional boolean ``force``.
The actor will use (e.g. equip or consume) the object. The object should be in the actor's inventory.
Example:
.. code-block:: Lua
core.sendGlobalEvent('UseItem', {object = potion, actor = player, force = true})
**ModifyStat**
Modify the corresponding stat.
.. code-block:: Lua
-- Consume 10 magicka
actor:sendEvent('ModifyStat', {name = 'magicka', amount = -10})
**AddVfx**
Calls the corresponding method in openmw.animation
.. code-block:: Lua
local eventParams = {
model = 'vfx_default',
options = {
textureOverride = effect.particle,
},
}
actor:sendEvent('AddVfx', eventParams)
**PlaySound3d**
Calls the corresponding function in openw.core on the target. Will use core.sound.playSoundFile3d instead of core.sound.playSound3d if you put `file` instead of `sound` in the event data.
.. code-block:: Lua
actor:sendEvent('PlaySound3d', {sound = 'Open Lock'})
**BreakInvisibility**
Forces the actor to lose all active invisibility effects.
UI events
---------
**ShowMessage**
If sent to a player, shows a message as if a call to ui.showMessage was made.
.. code-block:: Lua
player:sendEvent('ShowMessage', {message = 'Lorem ipsum'})
**UiModeChanged**
Every time UI mode is changed built-in scripts send to player the event ``UiModeChanged`` with arguments ``oldMode, ``newMode`` (same as ``I.UI.getMode()``)
and ``arg`` (for example in the mode ``Book`` the argument is the book the player is reading).
.. code-block:: Lua
eventHandlers = {
UiModeChanged = function(data)
print('UiModeChanged from', data.oldMode , 'to', data.newMode, '('..tostring(data.arg)..')')
end
}
**AddUiMode**
Equivalent to ``I.UI.addMode``, but can be sent from another object or global script.
.. code-block:: Lua
player:sendEvent('AddUiMode', {mode = 'Book', target = book})
**SetUiMode**
Equivalent to ``I.UI.setMode``, but can be sent from another object or global script.
.. code-block:: Lua
player:sendEvent('SetUiMode', {mode = 'Book', target = book})
World events
------------
Global events that just call the corresponding function in `openmw.world`.
.. code-block:: Lua
-- world.pause(tag)
core.sendGlobalEvent('Pause', tag)
-- world.unpause(tag)
core.sendGlobalEvent('Unpause', tag)
-- world.setGameTimeScale(scale)
core.sendGlobalEvent('SetGameTimeScale', scale)
-- world.setSimulationTimeScale(scale)
core.sendGlobalEvent('SetSimulationTimeScale', scale)
**SpawnVfx, PlaySound3d**
Calls the corresponding function in openw.core. Note that PlaySound3d will call core.sound.playSoundFile3d instead of core.sound.playSound3d if you put `file` instead of `sound` in the event data.
.. code-block:: Lua
core.sendGlobalEvent('SpawnVfx', {position = hitPos, model = 'vfx_destructarea', options = {scale = 10}})
core.sendGlobalEvent('PlaySound3d', {sound = 'Open Lock', position = container.position})
**ConsumeItem**
Reduces stack size of an item by a given amount, removing the item completely if stack size is reduced to 0 or less.
.. code-block:: Lua
core.sendGlobalEvent('ConsumeItem', {item = foobar, amount = 1})
**Lock**
Lock a container or door
.. code-block:: Lua
core.sendGlobalEvent('Lock', {taret = selected, magnitude = 50})
**Unlock**
Unlock a container or door
.. code-block:: Lua
core.sendGlobalEvent('Unlock', {taret = selected})