How to implement thirst

Hi, I'm creating a plugin and I want to implement thirst. I already programmed a way for the player to drink, but not a way for the server to keep track of their thirst. How can I have the server store the players' thirst, and lower it by 10% every 5 minutes?

 

Bukkit schedular, http://wiki.bukkit.org/Scheduler_Programming

Repeating task.

Also, do you play hungercraft by any chance? They have thirst too

 

You're going to need some knowledge of schedulers (link above), storing Player Objects as a String in a HashMap, and storing the integer for health. You may also use the EXP bar like MineZ does, not too hard to figure out

 

I tried to make something like this a while ago. I still never figured out how that damn bar works. Very frustrating =(

 

float xpbar = current water level in float / max water level in float;
player.setExp(xpbar);

(you get the point of 'water level')