WealthIdeaFromClass.java

import java.util.LinkedList;

/*
Curves:
	probabilityOfHavingChild(deltaWealth, inflation)
	wealth/inflation
	consumptionCurve(deltaWealth, inflation)
	adolesentConsumptionRequirements
	adulthoodBetsowment
	adulthoodYearlyExpense
*/

public class Individual{
	public static void main(String[] args){
		Individual individual = new Individual(40, 10000000.0);
		for(int i=0; i<100; ++i){
			individual.ageOneYear(Math.random()/10.0 - 0.05);
			System.out.println(individual.getWealth());
		}
	}

	private int age;
	private double wealth;
	private LinkedList<Individual> children;
	
	public Individual(){
		this(0,0.0);
	}
	
	public Individual(int age, double wealth){
		this.age = age;
		this.wealth = wealth;
		children = new LinkedList<Individual>();
	}
	
	public double getWealth(){
		return wealth;
	}
	
	void inheritWealth(double inheritance){
		wealth += inheritance;
	}
	
	/**
	@param returnOnWealth [-1,1] as %return/100
	*/
	public void ageOneYear(double returnOnWealth){
		++age;
		wealth *= 1.0+returnOnWealth;
		
		for(Individual individual : children){
			ageOneYear(returnOnWealth);
		}
	}
	
	protected boolean hasDied(){
		if(age+Math.random()*10 > 70 && Math.random() < 0.1){
			double amountPerChild = wealth / children.size();
			for(Individual child : children)
				child.inheritWealth(amountPerChild);
			wealth = 0.0;
		}
		return true;
	}
	
	protected boolean hasChild(){
		if(age > 20 && children.size() < 5 && Math.random() < 0.01666){
			double trustFund = 0.05 * wealth;
			wealth = 0.95 * wealth;
			children.add(new Individual(0, wealth));
			return true;	
		}
		return false;
	}
}