void Water(object PC, string tag, float time)
{
    string atag = GetTag(GetArea(PC));
    if (atag == tag) {
        int thirst = GetLocalInt(PC, "thirst");
        if (thirst > 4) {
            FloatingTextStringOnCreature("You died of thirst!", PC);
            ApplyEffectToObject(DURATION_TYPE_INSTANT, EffectDeath(FALSE), PC);
            thirst = 0;
        } else if (thirst == 4) {
            FloatingTextStringOnCreature("You are going to die of thirst soon.", PC);
            ApplyEffectToObject(DURATION_TYPE_INSTANT, ExtraordinaryEffect(EffectDamage((thirst-1)*40, DAMAGE_TYPE_DIVINE, DAMAGE_POWER_ENERGY)), PC);
            AssignCommand(PC, ActionPlayAnimation(ANIMATION_LOOPING_DEAD_BACK, 1.0, 20.0));
        } else if (thirst > 1) {
            FloatingTextStringOnCreature("You need water.", PC);
            ApplyEffectToObject(DURATION_TYPE_INSTANT, ExtraordinaryEffect(EffectDamage((thirst-1)*40, DAMAGE_TYPE_DIVINE, DAMAGE_POWER_ENERGY)), PC);
        } else {
            FloatingTextStringOnCreature("You feel thirsty.", PC);
        }
        SetLocalInt(PC, "thirst", thirst+1);
        DelayCommand(time, Water(PC, tag, time));
    }
}

void main()
{
    float delay = 60.0;            // time in seconds before player must drink
    object PC = GetEnteringObject();
    if (GetIsPC(PC) == TRUE) {
        FloatingTextStringOnCreature("The heat here is scorching.", PC);
        SetLocalInt(PC, "thirst", GetLocalInt(PC, "thirst")+1);
        DelayCommand(20.0, Water(PC, GetTag(OBJECT_SELF), delay));
    }
}