Need help truncating coordinates

schwim · 2018-05-22T02:19:08.950Z

Hi there everyone!

I use a resource to save coords for use in other resources the problem I have is that I need to be able to save them as:

999.99

But my resource saves them as:

999.99999999999

I’d like to handle it on the client side so that I can use it both for display in the game and saving to a text file.

Here’s my current snippet:

AddEventHandler("SaveCommand", function()
		x, y, z = table.unpack(GetEntityCoords(GetPlayerPed(-1), true))
		heading = GetEntityHeading(GetPlayerPed(-1))
	    local PlayerName = GetPlayerName()
	    TriggerServerEvent("SaveCoords", PlayerName , x , y , z, heading)
	    TriggerEvent("chatMessage", "SYSTEM", {255, 0, 0}, "Your coords are X:" .. x .. ", Y:" .. y .. ", Z:" .. z.." H:"..heading)
end)

Could someone help me figure out how to convert the coordinates to only two decimal places?

Thanks for your time!

pongo1231 · 2018-05-22T02:38:37.457Z

function roundToNthDecimal(num, n)
	local mult = 10^(n or 0)
	return math.floor(num * mult + 0.5) / mult
end

arsenicum · 2018-05-22T05:47:11.446Z

TriggerEvent('chat:addMessage', { args = { ('Coordinates: X: %.2f, Y: %.2f, Z: %.2f, H: %.2f'):format(x, y, z, heading) } })

Alternately, ('...'):format(...) is equivalent to string.format('...', ...).

See also the documentation on string.format.

schwim · 2018-05-22T12:53:52.074Z

pongo1231:

function roundToNthDecimal(num, n)
	local mult = 10^(n or 0)
	return math.floor(num * mult + 0.5) / mult
end

Hi there, Scammer and thanks for the help!

I tried implementing this but have done something incorrectly, I think. Here’s my attempt:

RegisterNetEvent("SaveCommand")

function roundToNthDecimal(num, n)
	local mult = 10^(n or 0)
	return math.floor(num * mult + 0.5) / mult
end

AddEventHandler("SaveCommand", function()
		x, y, z = table.unpack(roundToNthDecimal(GetEntityCoords(GetPlayerPed(-1), true)))
		heading = GetEntityHeading(GetPlayerPed(-1))
	    local PlayerName = GetPlayerName()
	    TriggerServerEvent("SaveCoords", PlayerName , x , y , z, heading)
	    TriggerEvent("chatMessage", "SYSTEM", {255, 0, 0}, "Your coords are X:" .. x .. ", Y:" .. y .. ", Z:" .. z.." H:"..heading)
end)

But this is saving coords with a single zero as the decimal space, no matter where I stand.

1437.0, -544.0, 79.0
1454.0, -554.0, 81.0
1431.0, -568.0, 77.0

I tried passing an argument for n as well, which caused the script to revert to full coords:

x, y, z = table.unpack(roundToNthDecimal(GetEntityCoords(GetPlayerPed(-1), true), 2))

Did I implement it incorrectly or is there perhaps a change I should have made to the code to get what I want?

schwim · 2018-05-22T14:22:19.313Z

Hi there and thanks very much for the help!

This solves my problem on the client side where it prints to screen but doesn’t resolve it on the server side where I save to a text file. That’s why I was hoping to solve it previously in the code, so it would send the truncated numbers to the server side.

This is my server side:

RegisterServerEvent("SaveCoords")
AddEventHandler("SaveCoords", function( PlayerName , x , y , z, heading )
 file = io.open( PlayerName .. "-Coords.txt", "a")
    if file then
        
        file:write("new Vector3("..x.."f, "..y.."f, "..z.."f),\n")
        
    end
    file:close()
end)

schwim · 2018-05-22T14:59:43.922Z

Hi there again,

I’m playing with this but noticing that my heading always returns as H:0.00 . If I remove the string format, it shows correctly(but long). Do I need to change something in the code to perhaps get it to handle heading correctly?

RegisterNetEvent("SaveCommand")

AddEventHandler("SaveCommand", function()
		x, y, z = table.unpack(GetEntityCoords(GetPlayerPed(-1), true))
		heading = GetEntityHeading(GetPlayerPed(-1))
	    local PlayerName = GetPlayerName()
	    TriggerServerEvent("SaveCoords", PlayerName , string.format('%.2f', x) , string.format('%.2f', y) , string.format('%.2f', z), string.format('%.2f', heading))
	   TriggerEvent('chat:addMessage', { args = { ('Coordinates: X: %.2f, Y: %.2f, Z: %.2f, H: %.2f'):format(x, y, z, heading) } })
end)

nopixel · 2018-05-22T17:50:18.221Z

Put this clientside, for each decimal you want, add a 0 to both the 100s below. You can also change the Citizen.Trace which is inside your F8 key to your chat message instead.

function tD(n)
    n = math.ceil(n * 100) / 100
    return n
end

RegisterNetEvent("SaveCommand")
AddEventHandler("SaveCommand", function()
	x, y, z = table.unpack(GetEntityCoords(GetPlayerPed(-1), true))
	local PlayerName = GetPlayerName()
	Citizen.Trace(""..tD(x)..","..tD(y)..","..tD(z)..","..tD(GetEntityHeading(GetPlayerPed(-1))).."")
	TriggerServerEvent( "SaveCoords", PlayerName , tD(x) , tD(y) , tD(z), tD(GetEntityHeading(GetPlayerPed(-1))) )			
end)

Put this serverside

RegisterServerEvent("SaveCoords")
AddEventHandler("SaveCoords", function( PlayerName , x , y , z, h )
    file = io.open( PlayerName .. "-Coords.txt", "a")
    if file then
        file:write("{" .. x .. "," .. y .. "," .. z .. "," .. h .. "}")
        file:write("\n")
    end
    file:close()
end)