# math.probablity

Is there a way to set probablity between two things? Let say I want one photo to pop 80% of the times and another one to pop 20% of the times. Is there a shortcut to do so. I’ve written this code but it’ll be better if there’s a shorter way.

``````
--# Main

--# Main
function setup()
photo = {}
t = 5
i = 1
previousi = 1
twop = 0
onep = 0
parameter.watch("percenttwo")
end

function draw()
background(255, 255, 255, 255)
t = t-1
if t==0 then
i = math.random(1,10)
if i==previousi then t=1 else
t = 5
previousi = i
end
end
if i<=8 then
p = 1
onep = onep+1
elseif i>8 then
p = 2
twop = twop+1
end
percenttwo = (twop/(twop+onep))*100
sprite(photo[p],WIDTH/2,HEIGHT/2)
end

``````

that’s pretty much the way to go.

You can just use math.random() and then test for 0.8, because math.random generates numbers in the range 0-1.

Okay cool. Then I think I’ll make a class for it.

. @Saurabh I don’t think you need a whole class for one if statement.

``````
if math.random<.8 then
photo1()
else
photo2()
end

``````

Yeah your right @Dave1707. I don’t know I just complicate things a lot by adding ( unnecessary )variables. Thanks!!