package real;
import java.util.*;
public class BattleShip {
private ArrayList<String> locationCells; //an ArrayList of cell locations
private String name; // the BattleShip's name
public void setLocationCells(ArrayList<String> loc) {
// A setter method that updates the BattleShip's location.
locationCells = loc;
// (Random location provided by the GameHelper placeDotCom() method)
}
public void setName(String n) { // Your basic setter method
name = n;
}
public String checkYourself(String userInput) {
String result = "miss";
int index = locationCells.indexOf(userInput);
/*
The ArrayList indexOf() method in action!
If the user guess is one of the entries in the ArrayList, indexOf()
will return its ArrayList location. If not, indexOf() will return -1.
*/
if (index >= 0) {
locationCells.remove(index);
// Using ArrayList's remove() method to delete an entry
if (locationCells.isEmpty()) {
// Using the isEmpty() method to see if all of the locations have been guessed
result = "kill";
System.out.println("Ouch! You sunk " + name + " : ( ");
// Tell the user when a BattleShip has been sunk
} else {
result = "hit";
}
}
return result; // Return: 'miss' or 'hit' or 'kill'
} // end method
} // close class
package real;
import java.util.*;
public class BattleShipRunner {
// declare and intitialize the variable we'll neet
private GameHelper helper = new GameHelper();
private ArrayList<BattleShip> battleShipList = new ArrayList<BattleShip>();
private int numOfGuesses = 0;
private void setUpGame() {
// first make some dot coms and give them locations
// make three BattleShip objects, give'em names, and stick'em in the ArrayList
BattleShip one = new BattleShip();
one.setName("Pets.com");
BattleShip two = new BattleShip();
two.setName("eToys.com");
BattleShip three = new BattleShip();
three.setName("Go2.com");
battleShipList.add(one);
battleShipList.add(two);
battleShipList.add(three);
// print brief instructions for user
System.out.println("Your goal is to sink three battleships.");
System.out.println("Pets.com, eToys.com, Go2.com");
System.out.println("Try to sink them all in the fewest number of guesses");
for (BattleShip battleShip : battleShipList) {
// repeat with each BattleShip in the list
ArrayList<String> newLocation = helper.placeDotCom(3);
// ask the helper for a BattleShip location
battleShip.setLocationCells(newLocation);
// call the setter method on this BattleShip to give it the location you just got from the helper
} // close for loop
} // close setUpGame method
public void startPlaying(){
while (!battleShipList.isEmpty()) {
// as long as the BattleShip list is Not empty
String userGuess = helper.getUserInput("Enter a guess");
// get the user input
checkUserGuess(userGuess); // call our own checkUserGuess method
} // close while
finishGame();
// call our own finishGame method
} // close method
public void checkUserGuess(String userGuess){
// find out if there's a hit (and kill on any BattleShip)
numOfGuesses++;
// increment the number of guesses the user has made
String result = "miss";
// assume its a 'miss', unless told otherwise
for (int x = 0; x < battleShipList.size(); x++) {
// repeat with all DotComs in the list
result = battleShipList.get(x).checkYourself(userGuess);
// ask the BattleShip to check the user guess, looking for a hit (or kill)
if (result.equals("hit")) {
break;
// get out of the loop early, no point in testing the others
}
if (result.equals("kill")) {
battleShipList.remove(x);
// this guy's dead, so take him out of the DotComs list then get out of the loop
// break;
}
} // close for
System.out.println(result); // print the result for the user
} // close method
private void finishGame(){
// print a message telling the user how he/she did in the game
System.out.println("All Dot Coms are dead! Your stock is now worthless.");
if (numOfGuesses <= 18) {
System.out.println("It only took you " + numOfGuesses + " guesses.");
System.out.println(" You got out before your options sank.");
} else {
System.out.println("Took you long enough. " + numOfGuesses + " guesses.");
System.out.println("Fish are dancing with your options.");
}
}// close method
public static void main(String[] args){
BattleShipRunner game = new BattleShipRunner();
//create the game object
game.setUpGame();
// tell the game object to set up the game
game.startPlaying();
// tell the game object to start the main game play loop (keeps asking for user input and checking the guess)
}
}
package real;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
/**
* Created by fengxiaoping on 5/15/16.
*/
public class GameHelper {
private static final String alphabet = "abcdefg";
private int gridLength = 7;
private int gridSize = 49;
private int[] grid = new int[gridSize];
private int battleShipCount = 0;
public String getUserInput(String prompt) {
String inputLine = null;
System.out.println(prompt + " ");
try {
BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
inputLine = is.readLine();
if (inputLine.length() == 0) return null;
} catch (IOException e) {
System.out.println("IOException : " + e);
}
return inputLine.toLowerCase();
}
public ArrayList<String> placeDotCom(int comSize) {
// You are not suppose to understand this
ArrayList<String> alphaCells = new ArrayList<String>();
String[] alphacoords = new String[comSize];
String temp = null;
int[] coords = new int[comSize];
int attempts = 0;
boolean success = false;
int location;
battleShipCount++;
int incr = 1;
if ((battleShipCount % 2) == 1) {
incr = gridLength;
}
while (!success & attempts++ < 200) {
location = (int) (Math.random() * gridSize);
// System.out.println("try" + location);
int x = 0;
success = true;
while (success && x < comSize) {
if (grid[location] == 0) {
coords[x++] = location;
location += incr;
if (location >= gridSize) {
success = false;
}
if (x > 0 && (location % gridLength == 0)) {
success = false;
}
} else {
System.out.println("used" + location);
success = false;
}
}//end of inner while loop
}//end of outer while loop
int x = 0;
int row = 0;
int column = 0;
System.out.println("\n");
while (x < comSize) {
grid[coords[x]] = 1;
row = (int) (coords[x] / gridLength);
column = coords[x] % gridLength;
temp = String.valueOf(alphabet.charAt(column));
alphaCells.add(temp.concat(Integer.toString(row)));
x++;
// System.out.println(" coord " + x +" = "+ alphaCells.get(x-1));
}
//System.out.println("/n");
return alphaCells;
}// end of method placeDotCom(int comSize)
}
