What's the most CPU economical for location "fence"

[dominoid]

What is the most CPU friendly way to setup a location radius fence? I want to do something when a player comes within a certain radius of an in-world object or location. I know I can use OnUpdate, but that should be avoided if possible right? So . . . is there another way? If not, what is the best way to throttle OnUpdate so its not too intensive?

TIA

[coolmodi]

Originally Posted by dominoid If not, what is the best way to throttle OnUpdate so its not too intensive?

Just use a buffer like that:

local BufferTable = {}
local function BufferReached(key, buffer)
    if key == nil then return end
    if BufferTable[key] == nil then BufferTable[key] = {} end
    BufferTable[key].buffer = buffer or 3
    BufferTable[key].now = GetFrameTimeSeconds()
    if BufferTable[key].last == nil then BufferTable[key].last = BufferTable[key].now end
    BufferTable[key].diff = BufferTable[key].now - BufferTable[key].last
    BufferTable[key].eval = BufferTable[key].diff >= BufferTable[key].buffer
    if BufferTable[key].eval then BufferTable[key].last = BufferTable[key].now end
    return BufferTable[key].eval
end
 
function GroupDamage.onUpdateHandler()
    if not BufferReached("general", 1) then return; end
        
    GroupDamage:updateCombatData()
    GroupDamage:orderCurrentRanking()
    GroupDamage:fillMainTarget()
    GroupDamage:updateMissingGroupMembers()
    GroupDamage:clearOldFights()
    GroupDamage:updatePanel()
end

And then use

self.control:SetHandler("OnUpdate", function() self.onUpdateHandler() end)

to set the handler, setting it in xml at least doesn't work for me. The second argument on BufferReached() sets the interval.

[merlight]

Or EVENT_MANAGER:RegisterForUpdate("uniqueTag", intervalInMilliseconds, function(gameTimeMs) ... end)

[dominoid]

Originally Posted by merlight Or EVENT_MANAGER:RegisterForUpdate("uniqueTag", intervalInMilliseconds, function(gameTimeMs) ... end)

Thank you both for the timely answer. This solution appears to be the easiest at this time and appears to meet my requirements. Thanks again.