FloatToInt and stuff [SOLVED]

[Atelier]

Hi, I'm working out a percentage of something and it works but doesn't seem very elegant:

Code: ags

float percentage = (IntToFloat(experience)/(IntToFloat(level)*1000.0))*100.0;
lbExp.Text = String.Format("%d%", FloatToInt(percentage, eRoundNearest));

Is there a simpler way without converting all these ints and floats?

Also, I'm having trouble with a slider..

Code: ags

// repeatedly_execute_always

expslider.Max = level*1000;           //level x 1000 is the experience to get in every level
expslider.Value = experience;         


if (level*1000 <= experience) {     //the player has enough experience to level up
   
   level++;
   int difference = level*1000 - experience;
   
   experience = 0 + difference;       //any surplus experience is carried on to the next level

}

If the player levels up more than once at a time (ie the difference is still bigger than level*1000), the expslider flickers back and forth while it's calculating it.

So is there a way to stop it updating the expslider until all the calculations are finished? (ie experience is finally less than level*1000). Thank you.

[Gilbert]

Haven't read the second part, but for the int-float part, since you're only going to use an integer result, you may try to simply the formula and see whether it can be done with only integer arithmetic.

The formula can be simplified as:
percentage = experience/(level*10)

The trick is, make sure that integer division operations are done at the very last moment (which already is the case in the above formula). So:

Code: ags

lbExp.Text = String.Format("%d%",experience/(level*10));

Note that since it now uses integer division, the result may deviate a tiny bit from what was done with floating point division and then have the result truncated.

[Khris]

For the second part: try replacing "if" by "while". Then in the case you described it should run twice before updating what the player sees.

[Atelier]

Thanks you guys

[monkey0506]

Regarding the truncation Gilbot was talking about, I was just testing it recently and any integer division always rounds down. So even if the floating-point division resulted in, say 60.999% (rounded up to 61%), the integer division would return 60%. Probably not an issue in the long-run, but if it ever was you could use floating-point division for a more precise result.

[Gilbert]

Yeah, but even then, you can try to do the conversions as late as possible, only when it's necessary (i.e. a division is done):

Code: ags

lbExp.Text = String.Format("%d%",FloatToInt(IntToFloat(experience)/IntToFloat(level*10),eRoundNearest));