refactor invincibility handling by consolidating invincible counting logic into a separate method

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

@@ -108,6 +108,7 @@ public class Entity {
                 knockbackCount = 0;
                 knockback = false;
                 speed = defaultSpeed;
+                invincibleCounting();
                 return;
             }
 
@@ -119,7 +120,10 @@ public class Entity {
             }
 
             knockbackCount++;
-            if(knockbackCount != 10) return;
+            if(knockbackCount != 10) {
+                invincibleCounting();
+                return;
+            }
 
             knockback = false;
             knockbackCount = 0;
@@ -146,14 +150,7 @@ public class Entity {
                 spriteCount = 0;
             }
         }
-
-        // INVINCIBLE COUNTER
-        if(!invincible) return;
-        invincibleCount++;
-        if(invincibleCount > 40) {
-            invincible = false;
-            invincibleCount = 0;
-        }
+        invincibleCounting();
     }
     public void draw(Graphics2D graphics2d) {
         int screenX = worldX - panel.player.worldX + panel.player.screenX;
@@ -613,5 +610,13 @@ public class Entity {
             actionLock = 0;
         }
     }
+    public void invincibleCounting() {
+        if(!invincible) return;
+        invincibleCount++;
+        if(invincibleCount > 40) {
+            invincible = false;
+            invincibleCount = 0;
+        }
+    }
 
 }