OnElementDataChange
From Multi Theft Auto: Wiki
This event is triggered after an element's data entry is changed. Such changes can be made on the client or the server using setElementData.
Parameters
string theKey, var oldValue, var newValue
- theKey: The name of the element data entry that has changed.
- oldValue: The old value of this entry before it changed. See element data for a list of possible datatypes.
- newValue: the new value of this entry after it changed. This will be equivalent to getElementData(source, theKey).
Global parameters
- source: The source of this event is the element whose element data changed.
- client: The client global variable is set to the client that called setElementData, or nil if it was called on the server.
- sourceResource: The resource which changed the element data. (Only works in versions above 1.3.4-5937)
Cancelling
This event cannot be cancelled using cancelEvent. To reverse the effect, use setElementData with the old value. See Example.
Example
Click to collapse [-]
ServerThis example outputs a message to players when any of their element data values is changed.
function outputChange(theKey, oldValue, newValue) if (getElementType(source) == "player") then -- check if the element is a player outputChatBox("Your element data '" .. tostring(theKey) .. "' has changed from '" .. tostring(oldValue) .. "' to '" .. tostring(newValue) .. "'", source) -- output the change for the affected player end end addEventHandler("onElementDataChange", root, outputChange)
Click to collapse [-]
ServerThis example checks and possibly reverses an element's data change.
function checkChange(theKey, oldValue) -- The client can only set 'special_thing' on its own player if (theKey== "special_thing") and (client ~= source) then outputChatBox("Illegal setting of " .. tostring(theKey) .. "' by '" .. tostring(getPlayerName(client))) setElementData(source, theKey, oldValue) -- Set back the original value end end addEventHandler("onElementDataChange", root, checkChange)
See Also
Element events
- onElementClicked
- onElementColShapeHit
- onElementColShapeLeave
- onElementDataChange
- onElementDestroy
- onElementModelChange
- onElementStartSync
- onElementStopSync