diff --git a/src/entities/Collidable.py b/src/entities/Collidable.py
index ebe0f2f..72a7c36 100644
--- a/src/entities/Collidable.py
+++ b/src/entities/Collidable.py
@@ -1,5 +1,31 @@
-import src.entities.Entity as Entity
+from src.entities.Entity import Entity
 
 
 class Collidable(Entity):
-    pass
+
+    def __init__(self, texture, pos, id):
+        super().__init__(texture, pos, id)
+
+    def check_for_collision(self, x_pos, y_pos):
+        if self.pos[0] == x_pos:
+            if self.pos[1] == y_pos:
+                return True
+
+        return False
+
+
+col = Collidable(1, 1, 1)
+
+
+"""
+    def interact_with_hp(self, hp, Statistics):
+        Statistics.set_hp(hp)
+
+    def interact_with_hunger(self, hunger, Statistics):
+        Statistics.set_hunger(hunger)
+
+    def interact_with_thirst(self, thirst, Statistics):
+        Statistics.set_thirst(thirst)
+
+    def interact_with_stamina(self, stamina, Statistics):
+        Statistics.set_stamina(stamina)"""
\ No newline at end of file
diff --git a/src/entities/Entity.py b/src/entities/Entity.py
index b9d4d43..e9be7f1 100644
--- a/src/entities/Entity.py
+++ b/src/entities/Entity.py
@@ -1,5 +1,6 @@
 class Entity:
-    def __init__(self):
-        self.texture
-        self.pos
-        self.id
+
+    def __init__(self, texture, pos, id):
+        self.texture = texture
+        self.pos = pos
+        self.id = id
diff --git a/src/entities/Interactable.py b/src/entities/Interactable.py
index 7720fdf..a3f3fb9 100644
--- a/src/entities/Interactable.py
+++ b/src/entities/Interactable.py
@@ -1,5 +1,24 @@
-import src.entities.Entity as Entity
+from src.entities.Entity import Entity
 
 
 class Interactable(Entity):
-    pass
+
+    def __init__(self, texture, pos, id):
+        super().__init__(texture, pos, id)
+
+    @staticmethod
+    def interact_with_hp(hp, Statistics):
+        Statistics.set_hp(hp)
+
+    @staticmethod
+    def interact_with_hunger(hunger, Statistics):
+        Statistics.set_hunger(hunger)
+
+    @staticmethod
+    def interact_with_thirst(thirst, Statistics):
+        Statistics.set_thirst(thirst)
+
+    @staticmethod
+    def interact_with_stamina(stamina, Statistics):
+        Statistics.set_stamina(stamina)
+
diff --git a/src/entities/Npc.py b/src/entities/Npc.py
index 45f460e..5867cac 100644
--- a/src/entities/Npc.py
+++ b/src/entities/Npc.py
@@ -1,7 +1,10 @@
-import src.entities.Collidable as Collidable
+from src.entities.Collidable import Collidable
+from src.entities.Interactable import Interactable
 
 
-class Npc(Collidable):
-    def __init__(self):
-        self.path
-        self.speed
+class Npc(Collidable, Interactable):
+    def __init__(self, texture, pos, id, path, speed):
+        Collidable.__init__(self, texture, pos, id)
+        Interactable.__init__(self, texture, pos, id)
+        self.path = path
+        self.speed = speed
diff --git a/src/entities/Statistics.py b/src/entities/Statistics.py
index 18b4cc9..1b28c2b 100644
--- a/src/entities/Statistics.py
+++ b/src/entities/Statistics.py
@@ -1,6 +1,46 @@
 class Statistics:
     def __init__(self):
-        self.hp
-        self.hunger
-        self.thirst
-        self.stamina
+        self.hp = 100
+        self.hunger = 100
+        self.thirst = 100
+        self.stamina = 100
+
+    # methods that don't let the values pass below 0 and over 100 during change
+    def set_hp(self, hp_diff):
+        if 0 <= self.hp + hp_diff <= 100:
+            self.hp = self.hp + hp_diff
+        else:
+            if self.hp + hp_diff <= 0:
+                self.hp = 0
+            else:
+                self.hp = 100
+
+    def set_hunger(self, hunger_diff):
+        if 0 <= self.hp + hunger_diff <= 100:
+            self.hp = self.hp + hunger_diff
+        else:
+            if self.hp + hunger_diff <= 0:
+                self.hp = 0
+            else:
+                self.hp = 100
+
+    def set_thirst(self, thirst_diff):
+        if 0 <= self.hp + thirst_diff <= 100:
+            self.hp = self.hp + thirst_diff
+        else:
+            if self.hp + thirst_diff <= 0:
+                self.hp = 0
+            else:
+                self.hp = 100
+
+    def set_stamina(self, stamina_diff):
+        if 0 <= self.hp + stamina_diff <= 100:
+            self.hp = self.hp + stamina_diff
+        else:
+            if self.hp + stamina_diff <= 0:
+                self.hp = 0
+            else:
+                self.hp = 100
+
+
+