Percentage of Counter

[Jdsfrog]

Hi, I'm still working on that RPG game and I was thinking of adding status effects (Poison, Paralysis, etc.) in a traditional turn-by-turn RPG battle. If, say, you are poisoned, every turn you'd have you get 10% of your health subtracted. Would there be a way for MMF2 to take whatever amount the counter for your health is and subtract exactly(Or about) 10% of that? Thanks.

[Dynasoft]

Multiply it by 1.10 for +10% and by 0.90 for -10%.

EDIT: Round it (or floor or ceil it) after if you want whole numbers only.

[Jdsfrog]

How exactly do you round? I have taken your advice so far and it is working exactly as I wanted it. It works perfectly when I have it do 10% of 10 but when I make it 12 it turns into 1.2. I'd want it to round to the lesser amount to keep them whole numbers. I'd just need to know how to round it off. Thanks.

[DavidN]

Entering round([value]) into the expression editor should round the number to the nearest whole number. Similarly, floor([value]) and ceil([value]) will always round down and up, respectively.

[Random]

You probably don't want to remove 10% of the counter's value, but 10% of the counter's maximum value - else the counter might never become 0 and it removes less every time:
10 - 1.0 = 9 (9.0)
9 - 0.9 = 8 (8.1)
8 - 0.8 = 7 (7.2)
7 - 0.7 = 6 (6.3)
6 - 0.6 = 5 (5.4)
5 - 0.5 = 5 (4.5)
>> it will stop at 5!

Now what you want is remove 10% of the maximum the counter can hold - e.g.:
max_health = 50
current_health = 34
remove 10%:
current_health = Round(current_health - max_health * 0.1)
>> current_health = 29

If you want roughly 10%, use the mighty random() function.
Random(x) gives a number between 0 and x-1.
soo... if you use
Round(current_health - max_health * (Random(10) + 5) * 0.01)
then you get something between 5% and 15%.
Round(current_health - max_health * Random(20) * 0.01)
gives you between 0% and 20%.