How do I define what math.random was chosen?
What I'm trying to use is
print (math.random(1, 2))
if math.random(1, 2)) ~= 1 then
message = Instance.new("Message")
message.Text = "1 was chosen!"
end
end
It is printing which number is chosen, but not doing what I am telling it to do when it is chosen.
I am getting no errors, help me please.
1 answer
Each time you call math.random, it will give you a new number1. If you want to keep the same number, you need to save it to a variable:
local choice = math.random(1, 2)
print(choice)
if choice == 1 then
local message = Instance.new("Message, workspace)
message.Text = "1 was chosen"
end
- Remember that
==means "is" and~=means "is not" - Remember to tab your code correctly
- Remember to use
localto define new variables math.random(n)is short hand formath.random(1, n)
Also, if you're just going to say "x was chosen" for each number, there's no reason to use an if at all:
local choice = math.random(2)
local message = Instance.new("Message", workspace)
message.Text = choice .. " was chosen"
-
Often when you have computations, you can pull out a value and replace that value for the computation. E.g.,
math.sqrt(4)and2are always going to be interchangeable becausemath.sqrtalways returns the same thing. This is called referential transparency. Because of this property, we say thatmath.sqrta pure function.math.randomis NOT a pure function, because it changes each time you call it2. ↩ -
Pure functions are usually easier to reason about. For things like randomness, it's often much more convenient to produce different values. ↩