DetachElementFromElement: Difference between revisions

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==Example==  
==Example==  
<!-- Explain what the example is in a single sentance -->
'''Example 1:''' This example attaches a marker to a vehicle, and detaches it when it blows up:
This function will detach any elements that might have been attached to the passed element.
<!-- Add the code below, an emphasis should be on making it clear, not optimized. You could provide two versions if you wish, one clear and well commented, the other optimized -->
<syntaxhighlight lang="lua">
<syntaxhighlight lang="lua">
function freeElement( element )
function attachMarkerToVehicle ( theVehicle )
       if ( isElementAttached( element ) ) then --If the specified element is attached to something
    -- create the marker to attach
             detachElementFromElement( element ) --Detach it.
    local arrowMarker = createMarker ( 0, 0, 0, "arrow", 1.5, 0, 0, 255, 255 )
    -- attach the marker above the vehicle
    attachElementToElement ( arrowMarker, theVehicle, 0, 0, 2 )
    -- add an event handler for when the vehicle blows up
    addEventHandler ( "onVehicleExplode", theVehicle, "onMarkedCarExplode" )
end
 
function onMarkedCarExplode ()
    -- get the elements attached to the vehicle
    local attachedElements = getAttachedElements ( source )
    -- loop through the table of elements
    for i,v in ipairs ( attachedElements ) do
        -- detach the element from the vehicle
        detachElementFromElement ( v, source )
    end
    -- remove the event handler
    removeEventHandler ( "onVehicleExplode", source, "onMarkedCarExplode" )
end
</syntaxhighlight>
'''Example 2:''' This function will detach any elements that might have been attached to the passed element:
<syntaxhighlight lang="lua">
function freeElement( theElement )
       if ( isElementAttached( theElement ) ) then --If the specified element is attached to something
             detachElementFromElement( theElement ) --Detach it.
       else
       else
             outputChatBox( "Element is not attached" ) --If not, say it wasn't attached in the first place.
             outputChatBox( "Element is not attached" ) --If not, say it wasn't attached in the first place.

Revision as of 07:16, 18 June 2007

This function detaches attached elements from one another.

Syntax

bool detachElementFromElement ( element theElement, [ element theAttachToElement ] )

Required Arguments

  • theElement: The element to be detached (the "child")

Optional Arguments

NOTE: When using optional arguments, you might need to supply all arguments before the one you wish to use. For more information on optional arguments, see optional arguments.

  • theAttachToElement: The element you wish to detach from, will detach from the attached element if this isn't specified.

Returns

Returns true if the detaching was successful, false otherwise.

Example

Example 1: This example attaches a marker to a vehicle, and detaches it when it blows up: 

function attachMarkerToVehicle ( theVehicle )
    -- create the marker to attach
    local arrowMarker = createMarker ( 0, 0, 0, "arrow", 1.5, 0, 0, 255, 255 )
    -- attach the marker above the vehicle
    attachElementToElement ( arrowMarker, theVehicle, 0, 0, 2 )
    -- add an event handler for when the vehicle blows up
    addEventHandler ( "onVehicleExplode", theVehicle, "onMarkedCarExplode" )
end

function onMarkedCarExplode ()
    -- get the elements attached to the vehicle
    local attachedElements = getAttachedElements ( source )
    -- loop through the table of elements
    for i,v in ipairs ( attachedElements ) do
        -- detach the element from the vehicle
        detachElementFromElement ( v, source )
    end
    -- remove the event handler
    removeEventHandler ( "onVehicleExplode", source, "onMarkedCarExplode" )
end

Example 2: This function will detach any elements that might have been attached to the passed element: 

function freeElement( theElement )
      if ( isElementAttached( theElement ) ) then --If the specified element is attached to something
            detachElementFromElement( theElement ) --Detach it.
      else
            outputChatBox( "Element is not attached" ) --If not, say it wasn't attached in the first place.
      end
end

See Also


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