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# Thread: Coding a Forum Level Up System

1. Okay, then please explain where you got 50. It should quite clearly be 2500 because as I said earlier, I calculated these based on a post count of 50.

I find it funny that you claim to be a mathematician but get these simple things utterly wrong.

2. Oops – in my head I just had EXP = 50 instead of EXP = 50 * 50. Well, in any case that would make it be 500. Not the 200 you for whatever reason expect.

However, comments like
I find it funny that you claim to be a mathematician but get these simple things utterly wrong.
show me I don't need to waste any more time trying to understand horrible code. It's fascinating what attitude people have towards others who try to help them for free(!). I don't need to prove to you that I studied mathematics, just as I don't need to listen to you accusing me of lying. Maybe others will continue to help you, although I certainly don't hope that they will.

Bye.

3. Help me? You've been nothing but condescending this whole time. I'm new at this, and your attitude has not been helping.

And no, by the way, 500*1.15^12 does not equal 3000. Nice try though?

4. Okay...
Code:
```var xpup = (xneeded * Math.ceil(Math.pow(1.15, plevel)))
var showxp= (xpup - (xneeded * Math.ceil(Math.pow(1.15, plevel-1))))
NewCode =  topR + midR + name + ": " + sign +" "+ plevel + "<BR> XP: "+ (EXP-showxp) +"<BR> Experience needed: " +  (xpup-EXP)+ "<BR>Overall Experience:" + (xneeded * EXP / xneeded) +"<br><!-- placeholder --><br><br>"```
So
Code:
```xpup = 500 * Math.ceil( Math.pow(1.15, 12) ) ==>>
xpup = 500 * Math.ceil( 5.35 ) ==>>
xpup = 500 * 6 ==>>
xpup = 3000

showxp= (xpup - (xneeded * Math.ceil(Math.pow(1.15, plevel-1)))) ==>>
showxp = (3000 - (500 * Math.ceil( Math.pow( 1.15, 11 ) ) ) ) ==>>
showxp = (3000 - (500 * Math.ceil( 4.65 ) ) ) ==>>
showxp = (3000 - (500 * 5) ) ==>>
showxp = 3000 - 2500 ==>>
showxp = 500

NewCode =  "...other stuff..."+ plevel
+ "<BR> XP: "+ (EXP-showxp)
+ "<BR> Experience needed: " +  (xpup-EXP)
+ "<BR>Overall Experience:" + (xneeded * EXP / xneeded) + ...
NewCode =  "...other stuff..."+ 12
+ "<BR> XP: "+ (2500-500)
+ "<BR> Experience needed: " +  (3000-500)
+ "<BR>Overall Experience:" + (500 * 2500 / 500) + ...
NewCode =  "...other stuff..."+ 12
+ "<BR> XP: "+ 2000
+ "<BR> Experience needed: " +  2500
+ "<BR>Overall Experience:" + 2500 + ...```
This expression is especially silly:
(xneeded * EXP / xneeded)

Pointless. The two uses of xneeded cancel out, so the value is always simply EXP.

5. Originally Posted by FrostWyrmWraith
And no, by the way, 500*1.15^12 does not equal 3000.
True. But that is *NOT* what your JavaScript says or does.

It reads:
var xpup = 500 * Math.ceil( Math.pow(1.15, 12) );
And because of the Math.ceil( ) in there, xpup *DOES* then equal 3000.

500*1.15^12 is actually 2675.1250527368555908203125

6. The (xneeded * EXP/xneeded) was there in the original coding.

Okay, so my dumb head head thought it was rounding it up to 2700. Actually I'm not sure where I got that impression, to be honest. Thank you for specifying why was becoming 3000.

Is there a way to make it round up just to the next number divisible by 50?

7. var xpup = 50 * Math.ceil( 500 * Math.pow(1.15, plevel) / 50 );

For a plevel of 12, that give xpup of 2700.

var showxp= xpup - 50 * Math.ceil( 500 * Math.pow(1.15, plevel-1) / 50 );

Again, for a plevel of 12 (with xpup of 2700) that will do

var showxp = 2700 - 2350;
or
showxp = 350

8. And then
Code:
```NewCode =  "...other stuff..."+ plevel
+ "<BR> XP: "+ (EXP-showxp)
+ "<BR> Experience needed: " +  (xpup-EXP)
+ "<BR>Overall Experience:" + (xneeded * EXP / xneeded) + ...
NewCode =  "...other stuff..."+ 12
+ "<BR> XP: "+ (2500-350)
+ "<BR> Experience needed: " +  (2700-2500)
+ "<BR>Overall Experience:" + (500 * 2500 / 500) + ...
NewCode =  "...other stuff..."+ 12
+ "<BR> XP: "+ 2150
+ "<BR> Experience needed: " +  200
+ "<BR>Overall Experience:" + 2500 + ...```

9. Okay, I actually think I get that. It worked, thanks!

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