Alright, starting to get into actual CRUNCH.
An everyturn rule(this is the Eternal Hunger rule):
let consume be the population of the tribe of player;
now consume is consume times the hunger of the tribe of player;
now consume is consume / 100;
if consume is less than 0, now consume is 0;
decrease food of tribe of player by consume;
if food of tribe of player is less than 0:
say "Your people starve without food: ";
let x be 0 - food of tribe of player;
now food of tribe of player is 0;
multiply x by 100;
divide x by hunger of the tribe of the player;
if x is greater than 0:
say "Casualties: [x] ";
decrease population of tribe of player by x;
let loss be 1;
increase loss by x times 2;
multiply loss by 100;
divide loss by mood of tribe of player;
if loss is greater than 0:
say "Morale Loss: [loss]";
say "[line break]";
This will get called every time the game decides a turn has passed. You lose food depending on how hungry your people generally are, and how many there are. A 50 hunger species(standard) will munch 1 food per 2 people per turn. A 20 hunger species would only nibble 1 food per 5 people, and a 200 hunger species(dude, you need a diet) would chew 2 food per person.
The people you can't feed will fall over and die, very sad. Right now, they all just die instantly. This may be unrealistic or unfair, but it's a start.
You also lose morale, no one likes seeing neighbors starve to death, not fun.
