tutorial_42.java

import java.util.Random;


/**
 * CLASS: driver
 */
class PetStore implements Store, Tax {
 //
 public static void main(String[] args) {
 
 Dog lab = new Dog("Brown", 3, true);
 Dog pit = new Dog("Black", 2.5, false);
 Dog dane = new Dog("White", 4.2, true);

 Cat scar = new Cat("Yellow", 1, true);
 Cat milk = new Cat("Spotted", 0.6, false); 

 }
 //
 @Override
 public Object buy(double cost) {
 return null;
 }
 //
 @Override
 public double sell(Object item) {
 return 0.0;
 }
 //
 @Override
 public double price(Object item) {
 return 0.0;
 }
 //
}



/**
 * INTERFACE
 */
interface Store {
 Object buy(double cost);
 double sell(Object item);
 double price(Object item);
}



/**
 * INTERFACE
 */
interface Tax {}



/**
 * CLASS
 */
abstract class Mammal { 
 // 
 private static int numberOfMammals;
 private String name, color; 
 private int age, health;
 private double height, maxHeight;
 private boolean male;
 // 
 // constructors
 //
 public Mammal() {
 name = "";
 color = "";
 age = 0;
 health = 100;
 height = 0.5;
 maxHeight = 2;
 male = true;
 numberOfMammals++;
 }
 //
 public Mammal(String n, String c, double mH, boolean g) {
 name = n;
 color = c;
 age = 0; 
 health = 100;
 height = 0.5;
 maxHeight = mH;
 male = g;
 numberOfMammals++;
 }
 //
 // setters
 //
 public void setName(String n) {
 name = n;
 }
 //
 public void setColor(String c) {
 color = c;
 }
 //
 public void setGender(boolean g) {
 male = g;
 }
 //
 public void setMaxHeight(double mH) {
 maxHeight = mH;
 }
 //
 public void setHealth(int h) {
 health = h;
 }
 //
 // getters
 //
 public String getName() {
 return name;
 }
 //
 public String getColor() {
 return color;
 }
 //
 public double getHeight() {
 return height;
 }
 //
 public double getMaxHeight() {
 return maxHeight;
 }
 //
 public int getAge() { 
 return age;
 }
 //
 public boolean getGender() {
 return male;
 }
 // 
 public int getHealth() {
 return health;
 }
 //
 public int getNumberOfMammals() {
 return numberOfMammals;
 }
 // 
 // methods
 //
 public void birthday() {
 if (isDead()) {
 return;
 } 
 age++;
 
 if (height < maxHeight) {
 height += 0.8;
 }
 if (age >= 15) {
 health -= rndRange(15,20);
 }
 if (health < 0) {
 health = 0;
 }
 }
 //
 public boolean isDead() {
 return (health == 0); 
 }
 //
 public void attacks(Mammal m) {
 int damage = rndRange(1,10);
 m.setHealth(m.getHealth() - damage);
 System.out.printf("%s inflicted %d damage on %s",name,damage,m.getName());
 }
 //
 public String toString() {
 return String.format(
 "Name: %s, Color: %s, Age: %d, Health: %d, Height: %.2f, Max-Height: %.2f, Gender: %s \n"
 ,name, color, age, health, height, maxHeight, (male ? "Male" : "Female")
 );
 } 
 //
 // tools
 //
 private int rndRange(int start, int finish) {
 return (
 new Random().nextInt(finish + 1 - start) + start
 );
 } 
 //
 // abstract 
 //
 public abstract Mammal breed(Mammal m);
 //
}



/**
 * CLASS
 */
class Dog extends Mammal { 
 //
 // constructors
 //
 public Dog() {
 super(); 
 }
 //
 public Dog(String c, double mH, boolean g) {
 super("Dogger", c, mH, g);
 }
 //
 // methods
 //
 @Override
 public void attacks(Mammal m) {
 int damage = rndRange(5,20);
 m.setHealth(m.getHealth() - damage);
 System.out.printf("%s inflicted %d damage on %s\n",getName(), damage, m.getName());
 }
 //
 @Override
 public Dog breed(Mammal m) {
 if (getGender() ^ m.getGender() && m instanceof Dog) {
 
 // create color for baby
 String tempC;
 switch(rndRange(1,3)) {
 case 1:
 tempC = getColor();
 break;
 case 2:
 tempC = m.getColor();
 break;
 default:
 tempC = getColor() + " & " + m.getColor();
 break;
 }
 // set height of baby
 double tempH = (getMaxHeight() + m.getMaxHeight()) / 2;
 
 // set gender of baby
 boolean tempG;
 switch(rndRange(0,1)) {
 case 0:
 tempG = false;
 break;
 default:
 tempG = true;
 break;
 }
 // return the new created baby
 return new Dog(tempC, tempH, tempG);
 } 
 else {
 // genders weren't compatible
 return null;
 }
 }
 //
 // tools
 //
 private int rndRange(int start, int finish) {
 return (
 new Random().nextInt(finish + 1 - start) + start
 );
 }
 //
}



/**
 * CLASS
 */
class Cat extends Mammal {
 //
 // constructors
 //
 public Cat() {
 super();
 }
 //
 public Cat(String c, double mH, boolean g) {
 super("Catter", c, mH, g);
 }
 //
 // methods
 //
 @Override
 public Cat breed(Mammal m) {
 if (getGender() ^ m.getGender() && m instanceof Cat) {
 
 // create color for baby
 String tempC;
 switch(rndRange(1,3)) {
 case 1:
 tempC = getColor();
 break;
 case 2:
 tempC = m.getColor();
 break;
 default:
 tempC = getColor() + " & " + m.getColor();
 break;
 }
 // set height of baby
 double tempH = (getMaxHeight() + m.getMaxHeight()) / 2;
 
 // set gender of baby
 boolean tempG;
 switch(rndRange(0,1)) {
 case 0:
 tempG = false;
 break;
 default:
 tempG = true;
 break;
 }
 // return the new created baby
 return new Cat(tempC, tempH, tempG);
 } 
 else {
 // genders weren't compatible
 return null;
 }
 }
 //
 // tools
 //
 private int rndRange(int start, int finish) {
 return (
 new Random().nextInt(finish + 1 - start) + start
 );
 }
 //
}