The entity classes are completed

The classes that represent entities (such as Player, Zombie, Sandwich, Treasure, ...) are completed. Now the ShadowTreasure is the only class that need to complete.

src/Player.java

+import java.util.ArrayList;
+
 public class Player extends Entity implements Movable{
     private Energy energy;
 
@@ -14,9 +16,9 @@ public class Player extends Entity implements Movable{
         this.energy.add(amount);
     }
 
-    protected void eat(Sandwich sandwich) {
+    protected void eat(ArrayList<Sandwich> sandwiches, int index) {
         this.updateEnergy(+5);
-        sandwich.eaten();
+        sandwiches.get(index).eaten();
     }
 
     @Override

src/Zombie.java

 public class Zombie extends Entity{
+    private boolean dead = false;
+
     protected Zombie(String filename, double x, double y) {
         super(filename, x, y);
     }
 
-    protected void killed() {
+    protected boolean isDead() {
+        return dead;
+    }
 
+    protected void killed() {
+        dead = true;
     }
 }
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