function is already handled?

[Bean666]

so this script shows if u enter marker a DX text shows up, but when two of us enter the market, an error shows up:

addEventHandler("onClientPreRender" with this function is already handled. line 142, how to fix this?

line 142 is:

function draw()
for i, c in ipairs(bombteams) do
if getPlayerTeam ( localPlayer ) and getPlayerTeam ( localPlayer ) == getTeamFromName(c[1]) then
dxDrawText("Protect and escort the bomb truck", (700/1920)*sx, (71/1080)*sy, (1278/1920)*sx, (103/1080)*sy, tocolor(200, 200, 0, 255), (1.00/1920)*sx, "bankgothic", "left", "top", false, false, false, false, false)
end
end
for i, c in ipairs(alliedteams) do
if getPlayerTeam ( localPlayer ) and getPlayerTeam ( localPlayer ) == getTeamFromName(c[1]) then
dxDrawText("Stop and defuse the bomb truck", (700/1920)*sx, (71/1080)*sy, (1278/1920)*sx, (103/1080)*sy, tocolor(110, 208, 30, 255), (1.00/1920)*sx, "bankgothic", "left", "top", false, false, false, false, false)
end
end
end

function drawprotect(localPlayer)
addEventHandler("onClientPreRender", getRootElement(), draw) -- THIS IS 142
end
addEvent("drawprotect", true)
addEventHandler("drawprotect", root, drawprotect)

function markerHit(localPlayer)
if source == attachedmarker then
  if ( localPlayer == getLocalPlayer() and getElementType ( localPlayer ) == "player" ) then 
    if isTimer(datatimer) then 
    killTimer(datatimer)
    end
    if Bombstart == false then return end
       local playerTeam = getPlayerTeam ( localPlayer ) 
       setElementData(localPlayer , "participated", true)
       drawprotect(localPlayer)
     end
   end
end 
addEventHandler("onClientMarkerHit", resourceRoot, markerHit)

 

Edited March 1, 2021 by Bean666

[IIYAMA]

8 minutes ago, Bean666 said:

addEventHandler("onClientPreRender" with this function is already handled. line 142, how to fix this?

This warning appears when you try to add an event handler, which is already attached to that function.

 

---

 

You can either use a variable:

local drawingStatus = false

 

if not drawingStatus then
  addEventHandler("onClientPreRender", getRootElement(), draw)
  drawingStatus = true
end

 

if drawingStatus then
  removeEventHandler("onClientPreRender", getRootElement(), draw)
  drawingStatus = false
end

 

---

 

Or you can use the following utility function isEventHandlerAdded, which you can copy out of the example:

https://wiki.multitheftauto.com/wiki/GetEventHandlers