diff --git a/game.py b/game.py
index 1f74039..a048402 100644
--- a/game.py
+++ b/game.py
@@ -8,7 +8,7 @@ class Game:
     @Author: zbyv
     @Date: 22.11.2023
     """
-    def __init__(self, world: World, hero: GameObject, home: GameObject):
+    def __init__(self, world: World, hero: GameObject, home: GameObject) -> None:
         self.__world = world
         self.__hero = hero
         self.__home = home
diff --git a/gameobject.py b/gameobject.py
index 45e2275..c05a972 100644
--- a/gameobject.py
+++ b/gameobject.py
@@ -16,7 +16,7 @@ class GameObject:
     Pozice objektu
     """
     @property
-    def position(self):
+    def position(self) -> Vector2:
         return self.__position
     
     """
@@ -25,7 +25,7 @@ class GameObject:
     Args:
         direction: Vektor, o ktery se ma objekt posunout
     """
-    def move(self, direction: Vector2):
+    def move(self, direction: Vector2) -> None:
         self.__position += direction
 
     """
@@ -34,5 +34,5 @@ class GameObject:
     Args:
         gui: Gui, na ktere se ma objekt vykreslit
     """
-    def draw(self, gui: Gui):
+    def draw(self, gui: Gui) -> None:
         gui.draw(self.__position.x, self.__position.y, self.__symbol)
\ No newline at end of file
diff --git a/gui.py b/gui.py
index 6489632..c5c90b7 100644
--- a/gui.py
+++ b/gui.py
@@ -37,7 +37,7 @@ class Gui:
     """
     Vycisti cele herni pole
     """
-    def clear(self):
+    def clear(self) -> None:
         self.__data = [" " for _ in range(self.__width * self.__height)]
 
     """
diff --git a/vector2.py b/vector2.py
index fee7617..1efe4e7 100644
--- a/vector2.py
+++ b/vector2.py
@@ -7,7 +7,7 @@ class Vector2:
     @Author: zbyv
     @Date: 22.11.2023
     """
-    def __init__(self, x, y) -> None:
+    def __init__(self, x: int, y: int) -> None:
         self.__x = x
         self.__y = y
 
@@ -15,14 +15,14 @@ class Vector2:
     `x` souradnice tohoto vektoru
     """
     @property
-    def x(self):
+    def x(self) -> int:
         return self.__x
 
     """
     `y` souradnice tohoto vektoru
     """
     @property
-    def y(self):
+    def y(self) -> int:
         return self.__y
 
     """
@@ -34,7 +34,10 @@ class Vector2:
     """
     Kouzelna metoda pro porovnani vektoru
     """
-    def __eq__(self, other) -> bool:
+    def __eq__(self, other: object) -> bool:
+        if not isinstance(other, Vector2):
+            return NotImplemented
+        
         return self.x == other.x and self.y == other.y
     
     """
diff --git a/world.py b/world.py
index e8b4e58..6ba7b05 100644
--- a/world.py
+++ b/world.py
@@ -18,14 +18,14 @@ class World:
     Sirka sveta
     """
     @property
-    def width(self):
+    def width(self) -> int:
         return self.__width
     
     """
     Vyska sveta
     """
     @property
-    def height(self):
+    def height(self) -> int:
         return self.__height
 
     """
@@ -37,7 +37,7 @@ class World:
     Returns:
         True pokud je policko prazdne, jinak False
     """
-    def is_empty(self, position: Vector2):
+    def is_empty(self, position: Vector2) -> bool:
         return self.__data[position.y][position.x] == 0
 
     """