implement Flask class

Java-Knight/src/main/java/org/project/entity/players/Assassin.java

@@ -10,6 +10,7 @@ public class Assassin extends Player {
     public Assassin() {
         super("ASSASSIN",100,100, new Dagger(), new AssassinArmor());
         setDefendRate(.7);
+        setFlask(10,3,false);
     }
 
     @Override

Java-Knight/src/main/java/org/project/entity/players/Knight.java

@@ -10,6 +10,7 @@ public class Knight extends Player {
     public Knight() {
         super("Knight",100,90, new Sword(), new KnightArmor());
         setDefendRate(.9);
+        setFlask(20,3,true);
     }
 
     @Override

Java-Knight/src/main/java/org/project/entity/players/Player.java

@@ -4,6 +4,8 @@ import org.project.entity.Entity;
 import org.project.entity.enemies.Goblin;
 import org.project.entity.enemies.Skeleton;
 import org.project.item.armors.Armor;
+import org.project.item.consumables.Consumable;
+import org.project.item.consumables.Flask;
 import org.project.item.weapons.Weapon;
 
 
@@ -23,6 +25,7 @@ public abstract class Player implements Entity, CombatOptions {
     private boolean hasSkeletonKey = false;
     private boolean hasVampireKey = false;
     private boolean successfulAction = true;
+    private Consumable flask;
 
     public Player(String name, int hp, int mp, Weapon weapon, Armor armor) {
         this.name = name;
@@ -205,4 +208,12 @@ public abstract class Player implements Entity, CombatOptions {
         return successfulAction;
     }
 
+    public void setFlask(int healAmount, int quantity, boolean isMana) {
+        flask = new Flask(healAmount, quantity, isMana);
+    }
+
+    public Consumable getFlask() {
+        return flask;
+    }
+
 }

Java-Knight/src/main/java/org/project/entity/players/Wizard.java

@@ -9,6 +9,7 @@ public class Wizard extends Player{
     public Wizard() {
         super("Wizard",90,90,new Bow(),new WizardArmor());
         setDefendRate(.6);
+        setFlask(30,3,true);
     }
 
     @Override

Java-Knight/src/main/java/org/project/item/consumables/Consumable.java

@@ -1,8 +1,28 @@
 package org.project.item.consumables;
 
-// TODO: UPDATE IMPLEMENTATION
-public abstract class Consumable {
-    /*
-    TODO: ADD OTHER REQUIRED AND BONUS METHODS
-    */
-}
+import org.project.entity.Entity;
+import org.project.item.Item;
+
+public abstract class Consumable implements Item {
+    private String name;
+    private int quantity;
+
+    public Consumable(String name, int quantity) {
+        this.name = name;
+        this.quantity = quantity;
+    }
+
+    public abstract void use(Entity target);  // distinct from Item.use()
+
+    public boolean hasCharges() { return quantity > 0; }
+
+    protected void consume() { if (quantity > 0) quantity--; }
+
+    public int getQuantity() { return quantity; }
+
+    @Override
+    public String getName() { return name; }
+
+    @Override
+    public void use() { System.out.println("Use " + name + " on a target."); }
+}

Java-Knight/src/main/java/org/project/item/consumables/Flask.java

@@ -2,15 +2,28 @@ package org.project.item.consumables;
 
 import org.project.entity.Entity;
 
-// TODO: UPDATE IMPLEMENTATION
-public class Flask {
-    /*
-    THIS IS AN EXAMPLE OF A CONSUMABLE DESIGN.
-    */
+public class Flask extends Consumable {
+    private int healAmount;
+    private boolean isMana;
 
-//    // TODO: UPDATE USE METHOD
-//    @Override
-//    public void use(Entity target) {
-//        target.heal(target.getMaxHP() / 10);
-//    }
-}
+    public Flask(int healAmount, int quantity, boolean isMana) {
+        super(isMana ? "Mana Flask" : "Health Flask", quantity);
+        this.healAmount = healAmount;
+    }
+
+    @Override
+    public void use(Entity target) {
+        if (!hasCharges()) {
+            System.out.println("Flask is empty!");
+            return;
+        }
+        if (isMana) {
+            target.setMP(target.getMP() + healAmount);
+            System.out.println(target.getClass().getSimpleName()
+                    + " restored " + healAmount + " MP!");
+        } else {
+            target.heal(healAmount);
+        }
+        consume();
+    }
+}