This isn't actually a question, I just thought I would share this equasion with people. If you want to show someone's HP as a percentage rather than an actual number (which is useful for style and for making HP meters), the equasion for doing so is this...
round(usr.HP+usr.MaxHP*(50/usr.MaxHP))
The round is unneccessary but gives you a whole percentage rather than a fraction. The equasion itself works like this: If the usr's max HP is 50, and their health is full, it works out to HP + MaxHP (100) * (50/MaxHP) (1) = 100. If their max is double that, it will be 200 * .5, resulting in 100. If their HP is -200/-200 (hey, it could happen) you will get -400 * -.25 = 100. The equasion only works if the MaxHP and usr.HP are both negative or both positive. If you have -100/100, you'll turn out with 0 * .5 = 0. You can fix this by adding a bit to the code...
if(usr.HP >= 0 && usr.MaxHP >= 0 || usr.HP <= 0 && usr.MaxHP <= 0)
round(usr.HP+usr.MaxHP*(50/usr.MaxHP))
else
round(abs(usr.HP)+abs(usr.MaxHP)*(abs(50/usr.MaxHP)))(50/usr.MaxHP)))*-1
When you put that in, it will first check to see if they're both negative or if they're both positive (or both 0), and if they are, do the equasion I gave at first. If they aren't, do the same equasion with all the numbers forced to be positive (the abs) then multiply by -1. Anyway, you can use this in your game if you want, but you have to change the code around a bit. These are designed to be put into stat panels. If you find any problems, or feel like thanking me for this equasion, feel free to reply.
Have you tested this? Mathmatically, that expresion reduces to round(usr.HP + 50) which is definately not what you want.
Calculating a percentage is as easy as:
var/percentage = round(current_value/max_value * 100)