Handle when Characters have no Weapon or target

src/Character.java

@@ -51,6 +51,9 @@ public void addWeapon(Weapon newWeapon) {
      * Gets the equipped weapon of this Character
      */
     public Weapon getEquippedWeapon() {
+        if (equippedWeapon == -1) {
+            return null;
+        }
         return weapons.get(equippedWeapon);
     }
 

src/Fists.java

@@ -0,0 +1,16 @@
+/**
+ * Default weapon for when you are unarmed
+ */
+public class Fists extends Weapon {
+    public Fists() {
+        super("fists", "your hands", 3);
+    }
+
+
+    @Override
+    public boolean useOn(Character target) {
+        target.health -= getBaseDamage();
+        System.out.println("Slapped for " + getBaseDamage() + " damage.");
+        return true;
+    }
+}

src/Main.java

@@ -4,6 +4,7 @@
 
 public class Main {
     public static void main(String[] args) {
+        Weapon defaultWeapon = new Fists();
         ArrayList<Character> characters = new ArrayList<>();
         /*
         Adding Your Character to the Arena, by Avery
@@ -37,12 +38,20 @@ public static void main(String[] args) {
                 continue;
             }
             int targetIndex = curr.pickTarget(characters);
-            if (targetIndex != i) {
-                System.out.println(curr.getName() + " attacked " +
-                        characters.get(targetIndex).getName() +
-                        " with their " + curr.getEquippedWeapon().getName());
+            if (targetIndex == -1) {
+                System.out.println(curr.getName() + "'s attack failed because" +
+                        " it couldn't find a good target.");
+                continue;
+            }
+            Character target = characters.get(targetIndex);
+            Weapon weapon = curr.getEquippedWeapon();
+            if (weapon == null) {
+                weapon = defaultWeapon;
             }
-            curr.getEquippedWeapon().useOn(characters.get(targetIndex));
+            System.out.println(curr.getName() + " attacks " +
+                    target.getName() +
+                    " with their " + weapon.getName());
+            weapon.useOn(target);
         }
         if (characters.size() == 1) {
             System.out.println(characters.get(0).getName() + " won!");