package MV3500Cohort2024JulySeptember.homework3.Smith;
import edu.nps.moves.dis7.pdus.*;
import edu.nps.moves.dis7.utilities.DisChannel;
import edu.nps.moves.dis7.utilities.PduFactory;
import java.util.logging.Level;
import java.util.logging.Logger;
/** The purpose of this inheritable class is to provide an easily modifiable
* example simulation program that includes DIS-capable entities performing
* tasks of interest, and then reporting activity via PDUs to the network.
* Default program initialization includes PDU recording turned on by default.
*/
public class ExampleSimulationProgram {
// Constants for the Battleship game
private static final int GRID_SIZE = 10; // 10x10 grid for Battleship
private static final int MAX_TURNS = 100; // Limit turns to avoid infinite games
// Grids for each player
private char[][] player1Grid = new char[GRID_SIZE][GRID_SIZE];
private char[][] player2Grid = new char[GRID_SIZE][GRID_SIZE];
// To track whose turn it is
private boolean isPlayer1Turn = true;
// Ship positions (simple example positions for each player's ships)
private final int[][] player1Ships = {{0, 0}, {0, 1}, {0, 2}}; // Positions for player 1's ships
private final int[][] player2Ships = {{5, 5}, {5, 6}, {5, 7}}; // Positions for player 2's ships
// DIS utilities
private String descriptor = this.getClass().getSimpleName();
protected DisChannel disChannel;
protected PduFactory pduFactory;
protected FirePdu firePduPlayer1;
protected FirePdu firePduPlayer2;
protected MunitionDescriptor munitionDescriptor1 = new MunitionDescriptor();
// Simulation time settings
private double simulationTimeStepDuration = 1.0; // seconds
private double simulationTimeSeconds = 0.0;
// Tracking indices for Player 1's systematic search
private int player1SearchRow = 0;
private int player1SearchCol = 0;
/**
* Constructor to create an instance of this class.
* Design goal: additional built-in initialization conveniences can go here
* to keep your efforts focused on the runSimulation() method.
*/
public ExampleSimulationProgram() {
initialize();
}
/**
* Initialize the simulation program, setting up the DIS channel,
* PDUs, and the Battleship game grids.
*/
private void initialize() {
initializeDisChannel();
initializeSimulationEntities();
setupGrids();
disChannel.join();
}
/**
* Initialize the DIS channel for communication, setting verbose output
* for debugging and creating the PduFactory.
*/
private void initializeDisChannel() {
disChannel = new DisChannel();
pduFactory = disChannel.getPduFactory();
disChannel.setDescriptor(this.getClass().getSimpleName());
disChannel.setUpNetworkInterface();
disChannel.getDisNetworkInterface().setVerbose(true); // sending and receipt
disChannel.getPduRecorder().setVerbose(true);
}
/**
* Initialize simulation entities by creating PDUs for firing events.
*/
private void initializeSimulationEntities() {
firePduPlayer1 = pduFactory.makeFirePdu();
firePduPlayer2 = pduFactory.makeFirePdu();
}
/**
* Set up the game grids for each player, marking empty water and ship positions.
*/
private void setupGrids() {
// Initialize grids with empty water '~'
for (int i = 0; i < GRID_SIZE; i++) {
for (int j = 0; j < GRID_SIZE; j++) {
player1Grid[i][j] = '~';
player2Grid[i][j] = '~';
}
}
// Place ships on the grids ('P' denotes a ship)
for (int[] ship : player1Ships) {
player1Grid[ship[0]][ship[1]] = 'P';
}
for (int[] ship : player2Ships) {
player2Grid[ship[0]][ship[1]] = 'P';
}
}
/**
* This runSimulationLoops() method is for you, a customizable programmer-modifiable
* code block for defining and running a new simulation of interest.
*/
public void runSimulationLoops() {
int turnCount = 0;
while (turnCount < MAX_TURNS) {
if (isPlayer1Turn) {
// Player 1 systematically searches Player 2's grid
int[] target = selectNextTargetForPlayer1();
handleFire(firePduPlayer1, player2Grid, target, "Player 1");
} else {
// Player 2 fires at Player 1 randomly
int[] target = selectRandomTarget();
handleFire(firePduPlayer2, player1Grid, target, "Player 2");
}
// Switch turns and increment turn counter
isPlayer1Turn = !isPlayer1Turn;
turnCount++;
// Check for win conditions
if (checkWinCondition(player1Grid)) {
System.out.println("Player 2 wins!");
break;
} else if (checkWinCondition(player2Grid)) {
System.out.println("Player 1 wins!");
break;
}
// Wait for the next simulation step
try {
Thread.sleep((long) (simulationTimeStepDuration * 1000)); // units of seconds * (1000 msec/sec) = milliseconds
} catch (InterruptedException iex) {
Logger.getLogger(ExampleSimulationProgram.class.getSimpleName()).log(Level.SEVERE, null, iex);
}
// Increment simulation time
simulationTimeSeconds += simulationTimeStepDuration;
}
}
/**
* Systematically select the next target for Player 1 in a row-by-row manner.
* @return the coordinates of the next target cell.
*/
private int[] selectNextTargetForPlayer1() {
// Systematically select the next target in a row-by-row manner
int[] target = {player1SearchRow, player1SearchCol};
// Move to the next column
player1SearchCol++;
// If end of row is reached, move to the next row and reset column
if (player1SearchCol >= GRID_SIZE) {
player1SearchCol = 0;
player1SearchRow++;
}
// Ensure search stays within grid bounds
if (player1SearchRow >= GRID_SIZE) {
player1SearchRow = 0; // Reset search if bounds are exceeded
}
return target;
}
/**
* Randomly select a target on the grid for Player 2's turn.
* @return the coordinates of the randomly selected target cell.
*/
private int[] selectRandomTarget() {
int x = (int) (Math.random() * GRID_SIZE);
int y = (int) (Math.random() * GRID_SIZE);
return new int[]{x, y};
}
/**
* Handles the firing action, checking if the target is a hit or miss,
* updating the grid, and sending the appropriate PDU.
* @param firePdu the FirePdu object to use for the shot.
* @param grid the grid of the player being fired at.
* @param target the coordinates of the target cell.
* @param player the name of the player firing the shot.
*/
private void handleFire(FirePdu firePdu, char[][] grid, int[] target, String player) {
int x = target[0];
int y = target[1];
// Fire at the target position
firePdu.setDescriptor(munitionDescriptor1).setRange(100.0f); // Example fire properties
if (grid[x][y] == 'P') {
grid[x][y] = 'H'; // Hit
System.out.println(player + " hits a ship at (" + x + ", " + y + ")!");
} else if (grid[x][y] == '~') {
grid[x][y] = 'M'; // Miss
System.out.println(player + " misses at (" + x + ", " + y + ").");
} else {
System.out.println(player + " fires at (" + x + ", " + y + ") but it's already hit/missed.");
}
// Send the fire PDU to reflect the shot
disChannel.sendSinglePdu(simulationTimeSeconds, firePdu);
}
/**
* Checks the win condition by verifying if all ships on the grid have been hit.
* @param grid the grid to check.
* @return true if all ships are hit; false otherwise.
*/
private boolean checkWinCondition(char[][] grid) {
// Check if all ships have been hit
for (int i = 0; i < GRID_SIZE; i++) {
for (int j = 0; j < GRID_SIZE; j++) {
if (grid[i][j] == 'P') {
return false; // There are still ships left
}
}
}
return true; // All ships have been hit
}
/**
* Main method is first executed when a program instance is loaded.
* @param args command-line parameters: network address and port.
* Command-line arguments are an array of optional String parameters that are passed from execution environment during invocation
*/
public static void main(String[] args) {
ExampleSimulationProgram game = new ExampleSimulationProgram();
game.runSimulationLoops();
System.out.println("Game Over");
}
}