Using % and / in formulas

[ajilejay]

I am trying to create a formula to which involves my missing health, However whenever I use % it just acts like a subtraction example 420%320=100. Whenever I use / it drops anything <1. So I am finding it impossible to create anything based off my missing health. So I have gone to ridiculously confusing measures to get around this and it still doesn't work.

<ft: add_param atk (100-(((mhp-hp)*100)/mhp)*(0.1*atk))/100>

If im at 100% HP mhp - hp = 0 so 0/ anything * anything should still be 0 and it should return as 0 but it doesnt even do that. This is the most frustrating thing. I don't know what to do at this point. How do I stop it from throwing out results that <1!?

 

[Shaz]

What script are you using? I take it that's something that happens in addition to, or in place of, the damage formula on the skill tab?


I think dropping anything less than 1 is normal - it shouldn't do fractions, if that's what you mean.


And in a formula, % does not mean percent. It means modulus. So 420%320 means "how many are left over when you divide 420 by 320 evenly?" - the answer is 100.


Can you explain what you're trying to do? How is the value meant to be worked out? Your formula above is ALWAYS going to end up with something less than 1.

 

[Zalerinian]

No, your formula is wrong. At full HP that evaluates to 1.

(100-(((mhp-hp)*100)/mhp)*(0.1*atk))/100

mhp - hp * 100, this is done first. It comes out to to 0.

(100-(0/mhp)*(0.1*atk))/100

0 / mhp = 0

(100-(0)*(0.1*atk))/100

0.1 * atk = *some number that isn't important*

(100-(0)*(~number~))/100

0 * number = 0

(100-0)/100

100 - 0 = 100

100 / 100 = 1

there's your issue.

 

[ajilejay]

The way I am trying to get it to work is a higher bonus with larger amount of health missing. However it is working the opposite of the desired effect. It gives me a -bonus that scales with missing health.

I am using add param script

EDIT! I got it!

<ft: add_param atk -((100-(((mhp-hp)*100)/mhp)*(0.1*atk))/100)>

Why does it have to be so confusing!

 

[Zalerinian]

Well. To your first point in your original post: 

I am trying to create a formula to which involves my missing health, However whenever I use % it just acts like a subtraction example 420%320=100. Whenever I use / it drops anything <1. So I am finding it impossible to create anything based off my missing health. So I have gone to ridiculously confusing measures to get around this and it still doesn't work.

The modulous ( % ) in scripts means 'the remainder of' in your example, 100 is correct. 420 / 320 has a remainder of 100. It's not incorrect, it's just the same as subtraction. Division ( / ) will only give you a whole number. In the case of 420 / 320, this will only be 1. To get a decimal, you'll need to do 420/320.to_f + (420%320)/320. This should give you the normal decimal form that you were probably expecting, 1.3125.

As to the point about the other formula: 

<ft: add_param atk (100-(((mhp-hp)*100)/mhp)*(0.1*atk))/100>

If im at 100% HP mhp - hp = 0 so 0/ anything * anything should still be 0 and it should return as 0 but it doesnt even do that. This is the most frustrating thing. I don't know what to do at this point.

I explained in my earlier post as to why this comes out as 1 when you're at full health. The formula will evaluate (((mhp-hp)*100)/mhp)*(0.1*atk)) first, which will become 0 at full health. This leaves you with (100 - 0) / 100, which is the same as 100 / 100, which gives you your result of 1.

For your final point:

How do I stop it from throwing out results that <1!?

I'm not sure if you're referring to the damage formula that evaluates to 1, or the difference in % and / that you were also experiencing.

 

[ajilejay]

Well. To your first point in your original post: 

The modulous ( % ) in scripts means 'the remainder of' in your example, 100 is correct. 420 / 320 has a remainder of 100. It's not incorrect, it's just the same as subtraction. Division ( / ) will only give you a whole number. In the case of 420 / 320, this will only be 1. To get a decimal, you'll need to do 420/320.to_f + (420%320)/320. This should give you the normal decimal form that you were probably expecting, 1.3125.

As to the point about the other formula: 

I explained in my earlier post as to why this comes out as 1 when you're at full health. The formula will evaluate (((mhp-hp)*100)/mhp)*(0.1*atk)) first, which will become 0 at full health. This leaves you with (100 - 0) / 100, which is the same as 100 / 100, which gives you your result of 1.

For your final point:

I'm not sure if you're referring to the damage formula that evaluates to 1, or the difference in % and / that you were also experiencing.

thanks man I got it to work

 

[Zalerinian]

No problem, I'm glad you got it to work. formulas can be a real pain sometimes. I once spent a few days looking at one, trying to make it work. It really was a simple fix, and I only rewrote it about three times. Then I never ended up using that script really, so yay for that .

 

[Fomar0153]

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