Refratoring int f to firstHit

src/main/java/BattleShip/AIGridGUI.java

@@ -23,7 +23,7 @@ public class AIGridGUI extends JPanel {
     boolean[] cellsHit;
     boolean[] cellsKilled;
     boolean randomGuess = true;
-    int f; // it is the first
+    int firstHit;
     Color darkRed = new Color(100, 0, 0); //
     Border loweredBevel = BorderFactory.createLoweredBevelBorder();
     Border  raisedbevel = BorderFactory.createRaisedBevelBorder();
@@ -261,7 +261,7 @@ public class AIGridGUI extends JPanel {
 
                     //Starting from the location of the first hit on the ship, test each direction to determine how many consecutive hits have been made in that direction.
 
-                    int u = f;
+                    int u = firstHit;
                     int upCount = -1;
                     while(u >= 0 && cellsHit[u] && !cellsKilled[u]) {
                         u = moveUp(u);
@@ -270,7 +270,7 @@ public class AIGridGUI extends JPanel {
                     up.setCell(u);
                     up.setCount(upCount);
 
-                    int d = f;
+                    int d = firstHit;
                     int downCount = -1;
                     while(d >= 0 && cellsHit[d] && !cellsKilled[d]) {
                         d = moveDown(d);
@@ -279,7 +279,7 @@ public class AIGridGUI extends JPanel {
                     down.setCell(d);
                     down.setCount(downCount);
 
-                    int r = f;
+                    int r = firstHit;
                     int rightCount = -1;
                     while(r >= 0 && cellsHit[r] && !cellsKilled[r]) {
                         r = moveRight(r);
@@ -288,7 +288,7 @@ public class AIGridGUI extends JPanel {
                     right.setCell(r);
                     right.setCount(rightCount);
 
-                    int l = f;
+                    int l = firstHit;
                     int leftCount = -1;
                     while(l >= 0 && cellsHit[l] && !cellsKilled[l]) {
                         l = moveLeft(l);
@@ -358,7 +358,7 @@ public class AIGridGUI extends JPanel {
                     }
                     //Mark if any cell remains that has been hit but not yet killed.  If so, lock onto that cell.
                     if(cellsHit[bu.getGridLocation()] && !cellsKilled[bu.getGridLocation()]) {
-                        f = bu.getGridLocation();
+                        firstHit = bu.getGridLocation();
                         unkilledCells = true;
                     }
                 }
@@ -372,7 +372,7 @@ public class AIGridGUI extends JPanel {
                 b.setBackground(Color.red);
                 //If previously random guessing, switch to locking onto the hit cell.
                 if(randomGuess) {
-                    f = b.getGridLocation();
+                    firstHit = b.getGridLocation();
                     randomGuess = false;
                 }
                 cellsHit[guessLocation] = true;