[Solved] Simple math problem

[Lezalith]

Hey everyone, hope you're having a nice day.

Weeks! Long periods of time. On every fourth week, I want to decrease the supplies. This should do just fine:

Code: Select all

label newWeek:
    $ renpy.checkpoint()
    $ Week += 1
    
    if Week / 4 == 0:
        $ supplies -= 1
    else:
        pass

I once saw a tip on the internet. A guy was asking how can you tell whether the value is odd or even. The answer was simple: Divide it by 2 and check if it's zero, only even numbers work like that. So I thought of the same thing.
Week is divided by 4. Of course, this will be 0 only once every 4 weeks. Why does it do -1 supplies *every* week then? :C

[papiersam]

I think you're looking for modulo.

Because if weeks is 4, then 4/4 is 1, and that evaluates to true. But 4%4 is 0 (meaning 0 remainder).

[Lezalith]

4 divided by 4 equals 1... God, I feel dumb.

Anyway, how does that work? "Evaluates to true"? I mean, my code was ==0, so that shouldn't work either way..

[papiersam]

I suppose. When I tested your code, it didn't change the supplies value at all (which was expected). I applied your code herein with the modulo:

Code: Select all

label newWeek:
    $ renpy.checkpoint()
    $ Week += 1
    
    if Week % 4 == 0:
        $ supplies -= 1
    else:
        pass
        
    return
    
label start:
    
    $Week = 0
    $supplies = 15
    
    while supplies:
        
        "Week [Week] // Supplies [supplies]"
        call newWeek

And it seems to work just fine.