✓ ANSWER ACCEPTED

Rounding a Vector3 String Value to a whole number?

Asked May 31, 2017422 views3 answers

This basically just sets the TextLabel's text to the player's torso's coordinates. The values are too big and I have no idea on how to round it.

This is an example of what the TextLabel looks like: https://gyazo.com/acc5d71abfffceff8d89b38baea20cb9

How would I round the X, Y, and Z values so they are always whole numbers?

LocalScript inside of a TextLabel

local player = game.Players.LocalPlayer
local character = player.Character
if not character or not character.Parent then
    character = player.CharacterAdded:wait()
end


while wait(0.001) do
	script.Parent.Text = tostring(character.Torso.Position)
end

AnonymousMay 31, 2017Edited May 31, 2017

3 answers

✓ Accepted answer

A simple function I found off of lua-users.org(http://lua-users.org/wiki/SimpleRound): It rounds given num down to numDecimalPlaces

randomDecimalNumber = math.random(0,100)/3
print(randomDecimalNumber)

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

print(round(randomDecimalNumber, 0))
--29.666666666667
--30

Here is how you would implement this function into your code:

local player = game.Players.LocalPlayer
local character = player.Character

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

if not character or not character.Parent then
    character = player.CharacterAdded:wait()
end

while wait(0.001) do
    script.Parent.Text = 
	tostring(round(character.Torso.Position.x, 0)).." ,"..
	tostring(round(character.Torso.Position.y, 0))..","..
	tostring(round(character.Torso.Position.z, 0))
end

AnonymousMay 31, 2017Permalink

I think it would be better in your case to use strong.format as you are using a string and may not need to round the number though you can if needed.

Much like patterns you include specifiers to indicate the location of the data and how it is formatted.

You would use the specifier %d since we only deal with integers.

A quick example (local script in StarterCharacterScripts):-

local torso = script.Parent.Torso
local x, y, z

while wait(0.1) do
	x, y, z = torso.CFrame:components() -- only use the position of the cframe
	print(string.format('%d, %d, %d', x, y, z))
end

I hope this helps, please comment if you do not understand how / why this code works.

AnonymousMay 31, 2017Permalink

You can use math.floor or math.ceil

math.floor will round numbers DOWN whereas math.ceil will round numbers UP

For example:

print(math.floor(1.293)) -- Output: 1
print(math.ceil(1.293)) -- Output: 2

AnonymousMay 31, 2017Permalink

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