Engine: Commented a lot of code

9 files changed, 199 insertions, 119 deletions

@@ -43,9 +43,16 @@ public class PuzzleApplication extends Application {
     
     private void initGameDialog(boolean undecorated)
     {
+        /* Because the game form is accessed from many places at once, a
+         * Semaphore is used to control access to it */
         gameDialogHandler.acquireUninterruptibly();
         
+        /* If the dialog is already visible (for instance, when changing the
+         * from full screen mode to windowed or vice versa while the program is
+         * running), it has to be closed so it can be reinitalized */
         gameDialog.setVisible(false);
+        
+        // Set up the actual dialog
         Container contentPane = gameDialog.getContentPane();
         gameDialog = new JDialog(new JFrame(), false);
         gameDialog.setContentPane(contentPane);
@@ -76,6 +83,9 @@ public class PuzzleApplication extends Application {
             {
                 if (e.getKeyCode() == KeyEvent.VK_F4)
                 {
+                    /* The user is trying to switch the full screen mode; flip
+                     * the status switch, reinitalize the dialog and then tell
+                     * the GraphicsEnvironment what's happening */
                     stretchScreen = !stretchScreen;
 
                     if (stretchScreen)
@@ -88,20 +98,24 @@ public class PuzzleApplication extends Application {
                     }
                 } else if (e.getKeyCode() == KeyEvent.VK_SHIFT)
                 {
+                    /* If debug mode is enabled, holding Shift down should put
+                     * the game into hyperactive mode */
                     if (INSTANCE.getContext().getResourceMap().getBoolean("debugMode"))
                     {
                         debugSpeed = true;
                     }
-                    } else {
-                        KeyboardInput.getKey().keyInput(e);
-                    }
+                } else {
+                    // If anything else is pressed, let the GameState handle it
+                    KeyboardInput.getKey().keyInput(e);
                 }
+            }
 
             @Override
             public void keyReleased(KeyEvent e)
             {
                 if (e.getKeyCode() == KeyEvent.VK_SHIFT)
                 {
+                    // If Shift is let go of, hyperactive mode should end
                     debugSpeed = false;
                 } else {
                     KeyboardInput.getKey().letGo();
@@ -110,30 +124,44 @@ public class PuzzleApplication extends Application {
         });
         gameDialog.setVisible(true);
         
+        // As we're done with the game dialog, we can release the permit
         gameDialogHandler.release();
     }
 
     @Override
-    protected void startup() {
+    protected void startup()
+    {
         INSTANCE = this;
         
+        // Create the game form
         initGameDialog(true);
-        
+
+        // The game should start out in full screen mode
         GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().setFullScreenWindow(gameDialog);
 
+        // Create the game cycle and run it
         new Thread(new Runnable() {
             public void run() {
                 try {
                     Audio.init();
                     SystemGraphic.initalize();
                     
+                    // The game starts with the Title Screen
                     Game.setGameState(new TitleScreenGameState());
-                    
+
+                    /* The game cycle should run every tick (unless hyperactive
+                     * mode is enabled, when it should run constantly */
                     Interval in = Interval.createTickInterval(1);
                     while (true)
                     {
+                        /* If the game window is deactivated, the game should
+                         * pause execution */
                         if (in.isElapsed() && !gameSleep)
                         {
+                            /* If there is currently a transition running, the
+                             * only necessary function is rendering, otherwise
+                             * process keyboard input and run GameState-specific
+                             * game cycle code too */
                             if (!Display.isTransitionRunning())
                             {
                                 KeyboardInput.processInput();
@@ -141,6 +169,9 @@ public class PuzzleApplication extends Application {
                                 Game.getGameState().doGameCycle();
                             }
 
+                            /* Now, render to the game dialog. Note that as it
+                             * is used in many places, a Semaphore permit is
+                             * required before rendering can start */
                             gameDialogHandler.acquireUninterruptibly();
                             Display.render(gameDialog.getContentPane());
                             gameDialogHandler.release();
@@ -24,11 +24,13 @@ public class GameOverGameState implements GameState {
     
     public void initalize()
     {
+        // Play the Database-specifed Game Over music
         Audio.playMusic(Database.getMusic(Music.GameOver));
     }
     
     public void deinitalize()
     {
+        // Stop the music
         Audio.stopMusic();
     }
 
@@ -36,6 +38,13 @@ public class GameOverGameState implements GameState {
     {
         if (key.isActionDown())
         {
+            /* When the user presses the action key to exit the game over
+             * screen, clear the save data and transition back to the title
+             * screen.
+             * 
+             * NOTE: Clearing the save data may not actually be necessary here
+             * because TitleScreenGameState clears the save data before starting
+             * a new file */
             Game.setSaveFile(new SaveFile());
             
             try {
@@ -53,6 +62,7 @@ public class GameOverGameState implements GameState {
 
     public void render(Graphics2D g)
     {
+        // Display the Game Over picture
         g.drawImage(ObjectLoader.getImage("Picture", "GameOver"), 0, 0, null);
     }
 
@@ -30,8 +30,13 @@ public class TitleScreenGameState implements GameState {
     
     public void initalize()
     {
+        /* Play the Database-specified Title Screen music, which the client can
+         * change */
         Audio.playMusic(Database.getMusic(Music.Title));
         
+        /* Create the choice window, whose options are also taken from the
+         * Database. Then tell Display to render it and KeyboardInput to send
+         * keyboard events to it */
         choices = new ChoiceWindow.Builder(Arrays.asList(Database.getVocab(Vocabulary.NewGame), Database.getVocab(Vocabulary.LoadGame), Database.getVocab(Vocabulary.EndGame)), ChoiceWindow.ChoiceWindowLocation.BottomLeft)
                 .center(true)
                 .build();
@@ -41,8 +46,10 @@ public class TitleScreenGameState implements GameState {
     
     public void deinitalize()
     {
+        // Stop the music because the title screen is closing
         Audio.stopMusic();
         
+        // Also tell Display and KeyboardInput to forget about our ChoiceWindow
         Display.unregisterRenderable(choices);
         KeyboardInput.unregisterInputable(choices);
     }
@@ -50,47 +57,57 @@ public class TitleScreenGameState implements GameState {
     PauseTimer pt = new PauseTimer(0);
     public void processInput(KeyInput key)
     {
-        if (pt.isElapsed())
+        if (key.isActionDown())
         {
-            if (key.isActionDown())
+            /* If the player presses the action key, play the selection sound
+             * and act upon the choice they selected */
+            Audio.playSound(Database.getSound(Sound.Selection));
+
+            if (choices.getSelected().equals(Database.getVocab(Vocabulary.NewGame)))
             {
-                Audio.playSound(Database.getSound(Sound.Selection));
-                
-                if (choices.getSelected().equals(Database.getVocab(Vocabulary.NewGame)))
-                {
-                    Game.setSaveFile(new SaveFile());
-                    
-                    try {
-                        Display.transition(Database.getTransition(Transitions.Generic), new MapViewGameState("TestMap", 1, 2), true);
-                    } catch (InterruptedException ex) {
-                        Thread.currentThread().interrupt();
-                    }
-                } else if (choices.getSelected().equals(Database.getVocab(Vocabulary.LoadGame)))
-                {
-                    // Do nothing, yet
-                } else if (choices.getSelected().equals(Database.getVocab(Vocabulary.EndGame)))
-                {
-                    new Thread(new Runnable() {
-                        public void run() {
-                            try {
-                                Display.transition(Database.getTransition(Transitions.Generic).getOutTransition());
-                            } catch (InterruptedException ex) {
-                                Thread.currentThread().interrupt();
-                            }
-                            
-                            System.exit(0);
-                        }
-                    }).start();
+                /* If the player starts a new game, set the save data to a blank
+                 * instance */
+                Game.setSaveFile(new SaveFile());
+
+                // Then transition to the map where the game starts
+                try {
+                    Display.transition(Database.getTransition(Transitions.Generic), new MapViewGameState("TestMap", 1, 2), true);
+                } catch (InterruptedException ex) {
+                    Thread.currentThread().interrupt();
                 }
-            } else if (key.getKey() == KeyEvent.VK_UP)
+            } else if (choices.getSelected().equals(Database.getVocab(Vocabulary.LoadGame)))
+            {
+                // Do nothing, yet
+            } else if (choices.getSelected().equals(Database.getVocab(Vocabulary.EndGame)))
+            {
+                // End the game, but transition out before doing so
+                new Thread(new Runnable() {
+                    public void run() {
+                        try {
+                            Display.transition(Database.getTransition(Transitions.Generic).getOutTransition());
+                        } catch (InterruptedException ex) {
+                            Thread.currentThread().interrupt();
+                        }
+
+                        System.exit(0);
+                    }
+                }).start();
+            }
+        } else if (pt.isElapsed())
+        {
+            if (key.getKey() == KeyEvent.VK_UP)
             {
+                /* Tell ChoiceWindow that the player wants to move up, then
+                 * wait a second before allowing any more vertical movement so
+                 * that the player has a chance to let go of the up key */
                 choices.moveUp();
-                
                 pt.setTimer(1);
             } else if (key.getKey() == KeyEvent.VK_DOWN)
             {
+                /* Tell ChoiceWindow that the player wants to move down, then
+                 * wait a second before allowing any more vertical movement so
+                 * that the player has a chance to let go of the down key */
                 choices.moveDown();
-                
                 pt.setTimer(1);
             }
         }
@@ -103,6 +120,7 @@ public class TitleScreenGameState implements GameState {
 
     public void render(Graphics2D g)
     {
+        // Display the title screen picture
         g.drawImage(ObjectLoader.getImage("Picture", "Title"), 0, 0, null);
     }
 
@@ -10,11 +10,8 @@ import com.fourisland.fourpuzzle.PuzzleApplication;
 import com.fourisland.fourpuzzle.util.ObjectLoader;
 import com.fourisland.fourpuzzle.util.ResourceNotFoundException;
 import java.awt.image.BufferedImage;
-import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
-import java.net.URISyntaxException;
-import java.net.URL;
 import java.util.HashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -26,6 +23,11 @@ import org.xml.sax.SAXException;
 import org.xml.sax.helpers.DefaultHandler;
 
 /**
+ * ChipSet stores information about the tilesets for mapview.
+ * 
+ * I'm not really going to comment this class much yet because it currently
+ * parses Tiled-created chipset files and this is all going to be rewritten
+ * once I've written my own map editor.
  *
  * @author hatkirby
  */
@@ -116,7 +116,8 @@ public class Map {
     {
         int x = ev.getLocation().x;
         int y = ev.getLocation().y;
-        
+
+        // Check if the event is trying to move over the map boundaries
         if ((toMove == Direction.North) && (y == 0))
         {
             return true;
@@ -131,11 +132,14 @@ public class Map {
             return true;
         }
         
+        /* If the event is the hero and walkthrough is enabled, bypass the rest
+         * of the collision-checking */
         if ((ev instanceof HeroEvent) && (((MapViewGameState) Game.getGameState()).debugWalkthrough))
         {
             return false;
         }
         
+        // Check for layer events in the specified direction
         if ((toMove == Direction.North) && (checkForEventCollision(x, y-1)))
         {
             return true;
@@ -156,6 +160,7 @@ public class Map {
             return true;
         }
         
+        // Check for obstructions on the map itself in the specified direction
         ChipSet cSI = ChipSet.getChipSet(chipSet);
         HashMap<Integer,ChipSetData> cSID = cSI.getChipSetData();
         for (HashMap<Integer,Integer> mapArea : getMapData())
@@ -25,7 +25,6 @@ import com.fourisland.fourpuzzle.gamestate.mapview.event.specialmove.MoveEventTh
 import com.fourisland.fourpuzzle.gamestate.mapview.viewpoint.AutomaticViewpoint;
 import com.fourisland.fourpuzzle.gamestate.mapview.viewpoint.Viewpoint;
 import com.fourisland.fourpuzzle.gamestate.menu.MenuGameState;
-import com.fourisland.fourpuzzle.util.Functions;
 import java.awt.Graphics2D;
 import java.awt.event.KeyEvent;
 import java.awt.image.BufferedImage;
@@ -44,14 +43,23 @@ public class MapViewGameState implements GameState {
     
     public MapViewGameState(String map, int x, int y)
     {
+        // Load the specified map into memory
         setCurrentMap(map);
+        
+        // Place the Hero at the specified location
         Game.getSaveFile().getHero().setLocation(x, y);
+        
+        // Create a new viewpoint for the map
         currentViewpoint = new AutomaticViewpoint(currentMap);
+        
+        // Tell SpecialEvent about the new map so it can access it
         SpecialEvent.setMapView(this);
     }
         
     public void initalize()
     {
+        /* Depending on the specified music type, either play music, stop the
+         * music or let the already playing music continue */
         switch (currentMap.getMusicType())
         {
             case NoMusic: Audio.stopMusic(); break;
@@ -67,8 +75,11 @@ public class MapViewGameState implements GameState {
 
     public void processInput(KeyInput key)
     {
+        // Store the hero event in a local variable as it is used often
         HeroEvent hero = Game.getSaveFile().getHero();
 
+        /* If debug mode is enabled and the control key is held down, set the
+         * walkthrough flag so the Hero can walk through stuff */
         if (key.isCtrlDown() && !debugWalkthrough)
         {
             if (PuzzleApplication.INSTANCE.getContext().getResourceMap().getBoolean("debugMode"))
@@ -79,11 +90,14 @@ public class MapViewGameState implements GameState {
             debugWalkthrough = false;
         }
 
+        /* If the hero is not moving or the center of a MoveEvent action and no
+         * blocking special events are running, check the user input */
         if (!hero.isMoving() && !MoveEventThread.isHeroActive() && !EventHandler.isRunningEvent())
         {
             Direction toMove = null;
             Boolean letsMove = false;
 
+            // Translate the key input into the appropriate direction
             switch (key.getKey())
             {
                 case KeyEvent.VK_UP:
@@ -104,17 +118,22 @@ public class MapViewGameState implements GameState {
                     break;
             }
 
+            // If a movement key was indeed pressed, process it
             if (letsMove)
             {
+                // Try to move the hero in the specified direction
                 if (!hero.startMoving(toMove))
                 {
+                    /* If the hero is blocked in that direction, check to see
+                     * if a middle-layer OnHeroTouch event is the blocker, if
+                     * so, execute it */
                     for (LayerEvent ev : currentMap.getEvents())
                     {
                         if (ev.getCalltime() == EventCallTime.OnHeroTouch)
                         {
                             if (ev.getLayer() == Layer.Middle)
                             {
-                                if (Functions.isFacing(hero, ev))
+                                if (hero.getDirection().to(hero.getLocation()).equals(ev.getLocation()))
                                 {
                                     ev.getCallback().activate(ev.getCalltime());
                                 }
@@ -124,6 +143,8 @@ public class MapViewGameState implements GameState {
                 }
             }
 
+            /* If the player presses the action key, check if either of the two
+             * PushKey conditions are available */
             if (key.isActionDown())
             {
                 for (LayerEvent ev : currentMap.getEvents())
@@ -132,12 +153,16 @@ public class MapViewGameState implements GameState {
                     {
                         if (ev.getLayer() == Layer.Middle)
                         {
-                            if (Functions.isFacing(hero, ev))
+                            /* If the event is middle-layered and the hero is
+                             * facing it, execute it */
+                            if (hero.getDirection().to(hero.getLocation()).equals(ev.getLocation()))
                             {
                                 ev.setDirection(hero.getDirection().opposite());
                                 ev.getCallback().activate(ev.getCalltime());
                             }
                         } else {
+                            /* If the event is not middle-layered and the hero
+                             * is on it, execute it */
                             if (ev.getLocation().equals(hero.getLocation()))
                             {
                                 ev.getCallback().activate(ev.getCalltime());
@@ -146,7 +171,8 @@ public class MapViewGameState implements GameState {
                     }
                 }
             }
-            
+
+            // If the player presses the escape key, open the menu
             if (key.getKey() == KeyEvent.VK_ESCAPE)
             {
                 try {
@@ -159,6 +185,8 @@ public class MapViewGameState implements GameState {
         
         if (EventHandler.isRunningEvent())
         {
+            /* If debug mode is enabled and F11 is pressed, cancel any running
+             * events */
             if ((key.getKey() == KeyEvent.VK_F11) && (PuzzleApplication.INSTANCE.getContext().getResourceMap().getBoolean("debugMode")))
             {
                 for (LayerEvent ev : currentMap.getEvents())
@@ -171,11 +199,15 @@ public class MapViewGameState implements GameState {
     
     public void doGameCycle()
     {
+        // Store the hero event in a local variable as it is used often
         HeroEvent hero = Game.getSaveFile().getHero();
         if (hero.isMoving())
         {
+            // If the player is in the process of moving, continue it
             hero.processMoving();
             
+            /* If the player has just finished moving, check for a non
+             * middle-layered OnHeroTouch on the Hero and execute it */
             if (!hero.isMoving())
             {
                 for (LayerEvent ev : currentMap.getEvents())
@@ -198,6 +230,10 @@ public class MapViewGameState implements GameState {
         {
             if (!ev.isMoving())
             {
+                /* If one of the map's layer events aren't moving or being
+                 * processed by a MoveEvent action and no blocking special
+                 * events are running, start it moving in the direction provided
+                 * by its MovementType */
                 if (!MoveEventThread.isOtherActive(ev))
                 {
                     if (!EventHandler.isRunningEvent())
@@ -206,23 +242,28 @@ public class MapViewGameState implements GameState {
                     }
                 }
             } else {
+                // If the event IS moving, process the movement
                 ev.processMoving();
             }
             
             if (ev.getCalltime() == EventCallTime.ParallelProcess)
             {
+                // If the event is a ParallelProcess, execute it
                 ev.getCallback().activate(ev.getCalltime());
             }
         }
     }
 
     public void render(Graphics2D g)
-    {   
+    {
+        // Ask the current viewpoint where to render from
         int x = currentViewpoint.getX();
         int y = currentViewpoint.getY();
         
+        // Render the lower layer of the map
         g.drawImage(currentMap.renderLower(), 0, 0, Game.WIDTH, Game.HEIGHT, x, y, x+Game.WIDTH, y+Game.HEIGHT, null);
 
+        // Render each lower and middle layered event onto a seperate canvas
         BufferedImage eventLayer = Display.createCanvas(currentMap.getSize().width*16, currentMap.getSize().height*16);
         Graphics2D g2 = eventLayer.createGraphics();
         EventList events = currentMap.getEvents();
@@ -235,8 +276,10 @@ public class MapViewGameState implements GameState {
             }
         }
         
+        // Render the hero event onto the event canvas
         Game.getHeroEvent().render(g2);
 
+        // Render each above layered event onto the event canvas
         for (LayerEvent event : events)
         {
             if (event.getLayer() == Layer.Above)
@@ -245,13 +288,19 @@ public class MapViewGameState implements GameState {
             }
         }
 
+        // Render the event canvas
         g.drawImage(eventLayer, 0, 0, Game.WIDTH, Game.HEIGHT, x, y, x+Game.WIDTH, y+Game.HEIGHT, null);
+        
+        // Render the upper layer of the map
         g.drawImage(currentMap.renderUpper(), 0, 0, Game.WIDTH, Game.HEIGHT, x, y, x+Game.WIDTH, y+Game.HEIGHT, null);
     }
     
     public void setCurrentMap(String mapName)
     {
+        // Tell the save data what map is currently loaded
         Game.getSaveFile().setCurrentMap(mapName);
+        
+        // Load the specified map from the database
         currentMap = Database.getMap(mapName);
     }
     
@@ -7,7 +7,6 @@ package com.fourisland.fourpuzzle.gamestate.mapview.event;
 
 import com.fourisland.fourpuzzle.Direction;
 import com.fourisland.fourpuzzle.gamestate.mapview.Map;
-import com.fourisland.fourpuzzle.util.Functions;
 import com.fourisland.fourpuzzle.util.Interval;
 import java.awt.Point;
 import java.util.ArrayList;
@@ -46,22 +45,38 @@ public abstract class AbstractEvent implements Event {
     private int moveTimer;
     public boolean startMoving(Direction toMove)
     {
+        /* If the event is already moving (sometimes it manages to slip through
+         * the other filters), simply return without doing anything */
         if (isMoving())
         {
             return false;
         }
         
+        /* Attempt to turn in the correct direction and then check if it was
+         * done. It could fail in certain cases which would mean the event
+         * shouldn't move, for instance, if a LayerEvent's AnimationType was
+         * FixedGraphic.
+         * 
+         * There is a slight problem with this, however. Currently, if the
+         * AnimationType is FixedGraphic, but the event is already facing the
+         * correct direction, the event will move anyway, despite being fixed */
         setDirection(toMove);
-        
         if (getDirection() != toMove)
         {
             return false;
         }
         
+        /* Make sure that there are no present obstructions on the map in the
+         * specified direction */
         if (!getParentMap().checkForCollision(this, toMove))
         {
+            // Start the stepping animation
             setAnimationStep(2);
+            
+            // Ask the event's MoveSpeed for the length of the animation
             moveTimer = getMoveSpeed().getSpeed();
+            
+            // Set the moving flag
             setMoving(true);
             
             return true;
@@ -75,17 +90,25 @@ public abstract class AbstractEvent implements Event {
     {
         if (isMoving())
         {
+            // Movement should be processed every half tick
             if (in.isElapsed())
             {
+                // Decrement the move timer
                 moveTimer--;
+                
                 if (moveTimer <= 0)
                 {
+                    /* If movement has finished, stop the animation and unset
+                     * the moving flag */
                     setAnimationStep(1);
                     setMoving(false);
+                    
+                    // Move the event to the correct location
                     setLocation(getDirection().to(getLocation()));
                 } else if (moveTimer <= (getMoveSpeed().getSpeed() / 2))
                 {
-                    setAnimationStep(0);    
+                    // If movement is half-complete, advance its animation
+                    setAnimationStep(0);
                 }
             }
         }
@@ -93,14 +116,22 @@ public abstract class AbstractEvent implements Event {
     
     public boolean isOccupyingSpace(int x, int y)
     {
+        // Check if the event occupies the given location
         if (getLocation().equals(new Point(x,y)))
         {
             return true;
         }
         
-        if (Functions.isMovingTo(this, x, y))
+        /* Because a moving event technically occupies two locations, we also
+         * need to check if the given location is where the event is moving to
+         * (if it's moving at all) */
+        if (isMoving())
         {
-            return true;
+            Point loc = getDirection().to(getLocation());
+            if ((loc.x == x) && (loc.y == y))
+            {
+                return true;
+            }
         }
         
         return false;
@@ -39,7 +39,7 @@ public class MoveEventThread implements Runnable {
     
     public void start()
     {
-        for (Future f : eventThreads)
+        for (Future f : new ArrayList<Future>(eventThreads))
         {
             if (f.isDone())
             {
@@ -1,66 +0,0 @@
-/*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
- */
-
-package com.fourisland.fourpuzzle.util;
-
-import com.fourisland.fourpuzzle.Direction;
-import com.fourisland.fourpuzzle.gamestate.mapview.event.Event;
-
-/**
- *
- * @author hatkirby
- */
-public class Functions {
-    
-    public static boolean isFacing(Event ev1, Event ev2)
-    {
-        if ((ev1.getDirection() == Direction.North) && (ev2.getLocation().x == ev1.getLocation().x) && (ev2.getLocation().y == (ev1.getLocation().y - 1)))
-        {
-            return true;
-        } else if ((ev1.getDirection() == Direction.West) && (ev2.getLocation().x == (ev1.getLocation().x - 1)) && (ev2.getLocation().y == ev1.getLocation().y))
-        {
-            return true;
-        } else if ((ev1.getDirection() == Direction.South) && (ev2.getLocation().x == ev1.getLocation().x) && (ev2.getLocation().y == (ev1.getLocation().y + 1)))
-        {
-            return true;
-        } else if ((ev1.getDirection() == Direction.East) && (ev2.getLocation().x == (ev1.getLocation().x + 1)) && (ev2.getLocation().y == ev1.getLocation().y))
-        {
-            return true;
-        }
-        
-        return false;
-    }
-
-    public static boolean isMovingTo(Event ev, int x, int y)
-    {        
-        if (ev.isMoving() == false)
-        {
-            return false;
-        }
-        
-        if ((ev.getDirection() == Direction.North) && ((ev.getLocation().y-1) == y) && (ev.getLocation().x == x))
-        {
-            return true;
-        }
-        
-        if ((ev.getDirection() == Direction.West) && (ev.getLocation().y == y) && ((ev.getLocation().x-1) == x))
-        {
-            return true;
-        }
-        
-        if ((ev.getDirection() == Direction.South) && ((ev.getLocation().y+1) == y) && (ev.getLocation().x == x))
-        {
-            return true;
-        }
-        
-        if ((ev.getDirection() == Direction.East) && (ev.getLocation().y == y) && ((ev.getLocation().x+1) == x))
-        {
-            return true;
-        }
-        
-        return false;
-    }
-
-}