CallServerFunction

From Multi Theft Auto: Wiki

This function allows you to call any serverside function from the client's side. Of course only those which are available serverside. It doesn't matter if it's a MTA function, a Lua standard function or a custom function.

Numbers are automatically converted to a string and vice versa serverside to avoid data being lost. If you don't need this feature just delete it.

Important Note: Bear in mind that the funcname has to be a string!

Syntax

void callServerFunction( string funcname, [ var arg1, ... ] )

Required Arguments

• funcname: The name of the function that should be called serverside. May also be a function in a table, e.g. "math.round".

Optional Arguments

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

• arg1-argn: The arguments that should be passed to the function.

Code

function callServerFunction(funcname, ...)
    local arg = { ... }
    if (arg[1]) then
        for key, value in next, arg do
            if (type(value) == "number") then arg[key] = tostring(value) end
        end
    end
    -- If the serverside event handler is not in the same resource, replace 'resourceRoot' with the appropriate element
    triggerServerEvent("onClientCallsServerFunction", resourceRoot , funcname, unpack(arg))
end

function callServerFunction(funcname, ...)
    local arg = { ... }
    if (arg[1]) then
        for key, value in next, arg do arg[key] = tonumber(value) or value end
    end
    loadstring("return "..funcname)()(unpack(arg))
end
addEvent("onClientCallsServerFunction", true)
addEventHandler("onClientCallsServerFunction", resourceRoot , callServerFunction)

Example

-- get the local player element
local _local = getLocalPlayer()
-- define the leaveTeam command handler function
function cmdLeaveTeam()
    -- set the player's team to nil
    callServerFunction("setPlayerTeam", _local)
end
-- add the command handler
addCommandHandler("leaveTeam", cmdLeaveTeam, false)

Author: NeonBlack

See Also

• callClientFunction » This function allows you to call any clientside function from the server's side.

• callServerFunction » This function allows you to call any server-side function from the client's side.

• Check » This function checks if it's arguments are of the right types and calls the error-function if one isn't.

• doForAllElements » This function can be used to execute a specified function for all elements of a specified type.

• iterElements » Returns an iterator for your for loops saving time typing ipairs( getElementsByType( type ) ), instead you type: iterElements( type ).

• findRotation » Takes two points and returns the direction from point A to point B.

• FormatDate » Formats a date on the basis of a format string and returns it.

• getAge » This function calculates the age of a birthday.

• getPointFromDistanceRotation » Finds a point based on a starting point, direction and distance.

• getTimestamp » With this function you can get the UNIX timestamp.

• IfElse » Returns one of two values based on a boolean expression.

• isLeapYear » Checks if the given year is a leap year.

• math.round » Rounds a number whereas the number of decimals to keep and the method may be set.

• setTableProtected » Protects a table and makes it read-only.

• setVehicleGravityPoint » This clientside function sets a vehicle's gravity in the direction of a 3 dimensional coordinate with the strength specified.

• string.explode » This function splits a string at a given separator pattern and returns a table with the pieces.

• table.copy » This function copies a whole table and all the tables in that table.

• table.map » This function goes through a table and replaces every field with the return of the passed function, where the field's value is passed as first argument and optionally more arguments.

• table.size » Finds the absolute size of a table.

• var_dump »This function outputs information about one or more variables using outputConsole().

• RGBToHex » This function returns a string representing the color in hexadecimal.

• getAlivePlayersInTeam » This function returns a table of the alive players in a team.

• getResourceSettings » This function returns a table of the resource settings.

• onVehicleWeaponFire » This code implements an event that is triggered when a player in a vehicle fires a vehicles weapon.

• toHex » This function converts a decimal number to a hexadecimal number, as a fix to be used clientside.

• getElementSpeed » This function allows you to get element speed in kph or mph units.

• setElementSpeed » This function allows you to set moving element speed in kph or mph units.

• centerWindow » This function center the window in any resolution.

• coroutine.resume » Fix for hidden coroutine error messages

• getPlayerFromNamePart » This function allows you to get player From his Name part.