// The Blues
//
// Chromosome to store 10 bit integer representation and assigned colour.
//
// Author  Matthew Caryl
// Created 2.5.97
//
//  Although under copywrite to the author (Matthew Caryl) this code can be copied and modified for non-commercial
//  purposes as long as any derivatives contain this condition.

package Blues;

import java.awt.Color;
import ADT.Random;

final class Chromosome {
    private static int      chromosomeLength = 10;
    private boolean[]       genes;
    private static Color    bestColor = Color.blue;
    private static Color    okColor = Color.red;
    private static Color    poorColor = Color.magenta;
    private static Color    badColor = Color.black;
    
    // Create random gene
    public Chromosome(World w) {
        genes = new boolean[chromosomeLength];
        for (int i = 0; i < chromosomeLength; i++)
            genes[i] = w.random().range(2) == 1;
        }
    
    // Copy parent and mutate
    public Chromosome(World w, Chromosome parent) {
        int i;
        int mutate = w.random().range(chromosomeLength);
        
        genes = new boolean[chromosomeLength];
        for (i = 0; i < chromosomeLength; i++)
            genes[i] = parent.genes[i];
        
        genes[mutate] = !genes[mutate];
        }
    
    // Crossover parents
    public Chromosome(World w, Chromosome parent1, Chromosome parent2) {
        int i;
        int cross = w.random().range(chromosomeLength);
        
        genes = new boolean[chromosomeLength];
        for (i = 0; i < cross; i++)
            genes[i] = parent1.genes[i];
        for (i = cross; i < chromosomeLength; i++)
            genes[i] = parent2.genes[i];
        }
    
    // Return evaluation based on first two bits
    public int evaluation(World w) {
        boolean     o1 = genes[0];
        boolean     o2 = genes[1];
        
        if (o1) {
            if (o2) {
                return w.blue_value;
                }
            else {
                return w.black_value;
                }
            }
        else {
            if (o2) {
                return w.purple_value;
                }
            else {
                return w.red_value;
                }
            }
        }
    
    // Return colour based on first two bits
    public Color color() {
        boolean     o1 = genes[0];
        boolean     o2 = genes[1];
        
        if (o1) {
            if (o2) {
                return bestColor;
                }
            else {
                return badColor;
                }
            }
        else {
            if (o2) {
                return poorColor;
                }
            else {
                return okColor;
                }
            }
        }
    }