made item buyable

src/de/miaurizius/jgame2d/entity/Entity.java

@@ -13,6 +13,7 @@ import java.awt.*;
 import java.awt.image.BufferedImage;
 import java.io.FileInputStream;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.logging.Level;
 
 public class Entity {
@@ -66,6 +67,8 @@ public class Entity {
     public Entity currentWeapon;
     public Entity currentShield;
     public Projectile projectile;
+    public ArrayList<Entity> inventory = new ArrayList<>();
+    public final int maxInvSize = 20;
 
     // ITEM ATTRIBUTES
     public EntityType.WeaponType weaponType;
@@ -74,6 +77,7 @@ public class Entity {
     public String description;
     public int useCost;
     public int value;
+    public int price;
 
     public Entity(GamePanel panel) {
         this.panel = panel;
@@ -102,7 +106,7 @@ public class Entity {
         }
 
         spriteCounter++;
-        if(spriteCounter > 12) {
+        if(spriteCounter > 24) {
             if(spriteNum == 1) spriteNum = 2;
             else if(spriteNum == 2) spriteNum = 1;
             else spriteNum = 0;