CancelEvent: Difference between revisions

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</section>
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<section name="Example 2" class="client" show="true">
<section name="Example 2" class="client" show="true">
This example prevents any damage to a player clientside.
This example prevents any damage to a player clientside by making [[cancelEvent]] an event handler for the [[onClientPlayerDamage]] event.
<syntaxhighlight lang="lua">
<syntaxhighlight lang="lua">
addEventHandler ( "onClientPlayerDamage", getRootElement(), cancelEvent )
addEventHandler ( "onClientPlayerDamage", getRootElement(), cancelEvent )
</syntaxhighlight>
</syntaxhighlight>
</section>
</section>
==See Also==
==See Also==
{{Event functions}}
{{Event functions}}

Revision as of 01:31, 17 December 2007

This function is used to stop the automatic internal handling of events, for example this can be used to prevent an item being given to a player when they walk over a pickup, by canceling the onPickupUse event.

cancelEvent does not have an effect on all events, see the individual event's pages for information on what happens when the event is canceled. cancelEvent does not stop further event handlers from being called, as the order of event handlers being called is undefined in many cases. Instead, you can see if the currently active event has been cancelled using wasEventCancelled.

The use of cancelEvent outside of an event handler has no effect.

If you implement your own custom events and want to handle them being cancelled, you should call wasEventCancelled to check after your call to triggerEvent.

Syntax

bool cancelEvent ()   

Returns

Always returns true.

Example

Click to collapse [-]
Example 1

This example stops the player huntedPlayer from entering a vehicle:

-- call 'stopVehicleEntry' whenever hunterPlayer is about to enter a vehicle:
function stopVehicleEntry ( theplayer, seat, jacked )
   cancelEvent () -- stop the event from occuring
end
addEventHandler ( "onVehicleStartEnter", huntedPlayer, stopVehicleEntry )
Click to collapse [-]
Example 2

This example prevents any damage to a player clientside by making cancelEvent an event handler for the onClientPlayerDamage event.

addEventHandler ( "onClientPlayerDamage", getRootElement(), cancelEvent )

See Also