[JAVA]

I wrote a program that created a 10x10 ocean grid, added a ship, added a keypressed handler so i could move the ship around and added N random islands to a map that the ship cannot touch. Please help with the following step. My code is below with the assignment.

See my implementation below:

-- Ocean Explorer.java

import javafx.scene.Scene; import javafx.scene.paint.Color; import javafx.scene.shape.Rectangle; import javafx.application.Application; import javafx.event.EventHandler; import javafx.scene.image.Image; import javafx.scene.image.ImageView; import javafx.scene.input.KeyEvent; import javafx.scene.layout.AnchorPane; import javafx.scene.layout.Pane; import javafx.stage.Stage;

public class OceanExplorer extends Application{

boolean[][] islandMap; Pane root; final int dimensions = 10; final int islandCount = 10; final int scalingFactor = 50; Image shipImage; ImageView shipImageView; OceanMap oceanMap; Scene scene; Ship ship; @Override public void start(Stage mapStage) throws Exception { oceanMap = new OceanMap(dimensions, islandCount); islandMap = oceanMap.getMap(); // Note: We will revisit this in a future class and use an iterator instead of exposing the underlying representation!!! root = new AnchorPane(); drawMap();

ship = new Ship(oceanMap); loadShipImage(); scene = new Scene(root,500,500); mapStage.setTitle("Christopher Columbus Sails the Ocean Blue"); mapStage.setScene(scene); mapStage.show(); startSailing(); } private void loadShipImage(){ Image shipImage = new Image("ship.png",50,50,true,true); shipImageView = new ImageView(shipImage); shipImageView.setX(oceanMap.getShipLocation().x*scalingFactor); shipImageView.setY(oceanMap.getShipLocation().y*scalingFactor); root.getChildren().add(shipImageView); } private void startSailing(){ scene.setOnKeyPressed(new EventHandler(){

@Override public void handle(KeyEvent ke) { switch(ke.getCode()){ case RIGHT: ship.goEast(); break; case LEFT: ship.goWest(); break; case UP: ship.goNorth(); break; case DOWN: ship.goSouth(); break; default: break; } shipImageView.setX(ship.getShipLocation().x*scalingFactor); shipImageView.setY(ship.getShipLocation().y*scalingFactor); } }); } // Draw ocean and islands public void drawMap(){ for(int x = 0; x

--OceanMap.java--

import java.awt.Point; import java.util.Random;

// This class is responsible for generate a grid representing the island map // and randomly placing islands onto the grid. public class OceanMap { boolean[][] islands; int dimensions; int islandCount; Random rand = new Random(); Point shipLocation; // Constructor // Not adding validation code so make sure islandCount is much less than dimension^2 public OceanMap(int dimensions, int islandCount){ this.dimensions = dimensions; this.islandCount = islandCount; createGrid(); placeIslands(); shipLocation = placeShip(); } // Create an empty map private void createGrid(){ islands = new boolean[dimensions][dimensions]; for(int x = 0; x 0){ int x = rand.nextInt(dimensions); int y = rand.nextInt(dimensions); if(islands[x][y] == false){ islands[x][y] = true; islandsToPlace--; } } } private Point placeShip(){ boolean placedShip = false; int x=0,y=0; while(!placedShip){ x = rand.nextInt(dimensions); y = rand.nextInt(dimensions); if(islands[x][y] == false){ placedShip = true; } } return new Point(x,y); }

public Point getShipLocation(){ return shipLocation; } // Return generated map public boolean[][] getMap(){ return islands; } public int getDimensions(){ return dimensions; } public boolean isOcean(int x, int y){ if (!islands[x][y]) return true; else return false; }

--Ship.java--

import java.awt.Point;

public class Ship { Point currentLocation; OceanMap oceanMap; public Ship(OceanMap oceanMap){ this.oceanMap = oceanMap; currentLocation = oceanMap.getShipLocation(); } public Point getShipLocation(){ return currentLocation; } public void goEast(){ if(currentLocation.x0 && oceanMap.isOcean(currentLocation.x-1, currentLocation.y)){ currentLocation.x--; } } public void goNorth(){ if(currentLocation.y>0 && oceanMap.isOcean(currentLocation.x, currentLocation.y-1)){ currentLocation.y--; } } public void goSouth(){ if(currentLocation.y

-- Design.ucls --

Pirates In this step you will add at least two Pirate ships to the ocean in any available cell. (Alternately you may designate two islands as Pirate islands and launch the ships from those islands-Optional). I have provided a pirate ship icon- or you may find your own. You will then implement the observer pattern using Java's inbuilt observer/observable. The pirate ship will register itself with Christopher Columbus' ship (CCS) and will receive notifications each time the ship moves. The pirate will use the information about CCS location to chase CC Hint 1: Don't forget to load the new ship into an ImageView and add the ImageView to the GraphScene (node tree). Hint 2: You are going to need to create a class for the PirateShip. Remember this class will implement the observer interface. Your ship class will now extend Observable. Pirates In this step you will add at least two Pirate ships to the ocean in any available cell. (Alternately you may designate two islands as Pirate islands and launch the ships from those islands-Optional). I have provided a pirate ship icon- or you may find your own. You will then implement the observer pattern using Java's inbuilt observer/observable. The pirate ship will register itself with Christopher Columbus' ship (CCS) and will receive notifications each time the ship moves. The pirate will use the information about CCS location to chase CC Hint 1: Don't forget to load the new ship into an ImageView and add the ImageView to the GraphScene (node tree). Hint 2: You are going to need to create a class for the PirateShip. Remember this class will implement the observer interface. Your ship class will now extend Observable