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To run the application, compile all the source code; this can be done via command line by navigating to
the directory where the source file are store, and running the command; javac *.java
After successfully compiling, run the command;
java MinePuzzle
To run the GUI version of the program.;

Source Code for the application
public class MineTunnel {
//number of miners in blue team (1 to 4)
private int blueGroup;
private int orangeGroup;
//the number of moves made
private int counter;
//0 empty -1 blue in cave , 1 orange in cave
private int caveStatus;
//
private String minerOrder;
//String other_attributes;
private int tunnel_position;
private int cave_offset;
private int miner_width;
private final int left_position = 260;
private int length_of_que;
private String current_position;
/**
* The main constructor to this application
* takes two parameters;
* @param cave_offset; the size of the cave
* @param miner_width : width of a single miner
*/
public MineTunnel(int cave_offset, int miner_width) {
this.cave_offset = cave_offset;
this.miner_width = miner_width;
caveStatus = 0;
counter = 0;
this.Reset();
length_of_que = minerOrder.length();
//we start with the first miner at the left position, just near the
cave
current_position = "Left";
}
/**
* We created an array with O and B a random number is generated between 1
* and 2 the random number is used to pick an option from the miners
array;
* if O is selected the number of blue miners [blueGroup] is incremented
* otherwise orangeGroup is incremented
*/
public void Reset() {
minerOrder = "";
orangeGroup = 0;
blueGroup = 0;
counter = 0;

caveStatus = 0;
//An array with both options orange and blue
String miners[] = {"0", "B"};
//choose randomly
for (int i = 0; i < 5; i++) {
int random = (int) ((Math.random() * 2) + 1);
String selected = miners[random - 1];
if (selected.equals("0")) {
//ensure not more than 4
if ((orangeGroup + 1) > 4) {
} else {
orangeGroup++;
minerOrder += selected;
}
} else {
if ((blueGroup + 1) > 4) {
} else {
blueGroup++;
minerOrder += selected;
}
}
}
length_of_que = minerOrder.length();
tunnel_position = left_position - (length_of_que * miner_width);
}
/**
* Returns the current position
* Right or Left of the cave
* @return
*/
public String getCurrentPosition(){
return current_position;
}
/**
* Returns the cave status
*
* @return 0 empty -1 blue in cave 1 orange in cave
*/
public int getCave() {
return caveStatus;
}
/**
* Returns the current position of the miners
*
* @return
*/
public int getPlace() {
return tunnel_position;

}
/**
* returns String minerOrder with the order of
* miners in the tunnel
*
* @return miners order
*/
public String getMinersOrder() {
return this.minerOrder;
}
/**
* The function takes a miner at the start or end of the
* minerOrder string and places in the cave. it then updates the
* cave status to either -1 or 1. The minerOrder is then trancated
* by taking a substring of the original string. This is done to ensure
* the number of miners displayed is consistent and accurate.
* Only the miner at the front or back can get into the cave.
*
* Modified to return a boolean in order to be able to update the
* message field;
* @return true if moved, false if not moved.
*/
public boolean moveIn() {
if (getCave() == 0) {
if (current_position.equals("Left")) {
if (minerOrder.charAt(length_of_que - 1) == 'B') {
caveStatus = -1;
minerOrder = minerOrder.substring(0, length_of_que - 1);
} else {
caveStatus = 1;
minerOrder = minerOrder.substring(0, length_of_que - 1);
}
} else {
if (minerOrder.charAt(0) == 'B') {
caveStatus = -1;
minerOrder = minerOrder.substring(1, length_of_que);
} else {
caveStatus = 1;
minerOrder = minerOrder.substring(1, length_of_que);
}
}
//call repainter
new TunnelDrawing(this);
counter++;
return true;
}else{
return false;
}
}
/**
* Returns the number of moves

* @return
*/
public int getMoves() {
return this.counter;
}
/**
* Removes the miner in the cave and places at the start or end
* of the minerOrder string, depending on whether the rest of the
* miners are on the left or right.
* The function first checks that the cave is occupied
* After removing the miner, the number of moves are increased
* then a call is made to the Tunnel Drawing to re-draw the GUI
* this is followed by a repaint(); which ensures the GUI is refreshed
*/
public boolean moveOut() {
//check that its occupied
if (getCave() != 0) {
//if others are on the left, place the miner in the cave at the
end
char min = 'O';
//IF BLUE was in the cave
if (caveStatus == -1) {
min = 'B';
}
if (current_position.equals("Left")) {
caveStatus = 0;
//append at the end
minerOrder += min;
} else {
caveStatus = 0;
//append at the beginning
minerOrder = min + minerOrder;
}
//increment moves
counter++;
new TunnelDrawing(this);
return true;
}
return false;
}
/**
* Moving left entails deducting the length covered by the miners
* from the position of tunnel
* shift all miners to the left of tunnel
* (return False if miners already on left)
* @return
*/
public boolean moveLeft() {
if (current_position.equals("Right")) {
current_position = "Left";
tunnel_position -= (this.miner_width * length_of_que) + (2 *
cave_offset);
new TunnelDrawing(this);
counter++;

return true;
}
return false;
}
/**
* The function shift all miners to the right of tunnel
* it returns False if miners already on right.
* To move to the right the tunnel position is changed by adding
* the product of miner width * number of miners and twice the size of the
cave
* to the tunnel position.
* @return
*/
public boolean moveRight() {
if (current_position.equals("Left")) {
current_position = "Right";
//change tunnel position
tunnel_position += (this.miner_width * length_of_que) + (2 *
cave_offset);
new TunnelDrawing(this);
counter++;
return true;
}
return false;
}
/**
* The function checks if the game has been
* won. It checks if blues are following one another or Orange
* @return
*/
public boolean gameOver(){
String order = getMinersOrder();
int len = order.length();
char start = order.charAt(0);
if(start == 'O' && order.charAt(len -1) == 'B'){
return true;
}
// for (int i = 0; i < order.length(); i++) {
// if(order.charAt(i) == order.charAt(i-1)){
// count++;
// }
//
// }
return false;
}
}

import java.util.Scanner;
public class Display {
MineTunnel mine;
public Display(){
mine = new MineTunnel(27, 21);
}
/**
* The function displays the menu to the command line
* it runs in an infinite loop that can only be terminated
* by option 6
*/
public void ShowMenu() {
ShowTunnel();
while(true){ //run in an infinite loop
System.out.println("Press 1 to move miner from tunnel to cave");
System.out.println("Press 2 to move miner from cave to tunnel");
System.out.println("Press 3 to move all tunnel miners to the right of
cave");
System.out.println("Press 4 to move all tunnel miners to the left of
cave");
System.out.println("Press 5 to start a new game");
System.out.println("Press 6 to quit");
System.out.println("");
System.out.println("");
System.out.print("Select your next move: ");
Scanner scanner = new Scanner(System.in);
int choice = scanner.nextInt();
switch (choice) {
case 1:
mine.moveIn();
ShowTunnel();
break;
case 2:
mine.moveOut();
ShowTunnel();
break;
case 3:
mine.moveRight();
ShowTunnel();
break;
case 4:
mine.moveLeft();
ShowTunnel();
break;
case 5:
mine.Reset();

ShowTunnel();
break;
case 6:
System.exit(0);
default:
System.out.println("Invalid Option");
break;
}
}
}
public void ShowTunnel() {
System.out.println(" __ ");
if(mine.getCave() == 0 ){ //empty
System.out.println("_______________| |________________");
}else if(mine.getCave() == 1 ){
System.out.println("_______________|O|________________");
}else if(mine.getCave() == -1 ){
System.out.println("_______________|B|________________");
}
if(mine.getCurrentPosition() == "Left"){
System.out.println(" " + mine.getMinersOrder());
}else{
System.out.println(" " + mine.getMinersOrder());
}
System.out.println("____________________________________");
}
/**
* The entry point to the application
*
* @param args
*/
public static void main(String args[]){
new Display().ShowMenu();
}
}