Add horse manual vertical movement functionality using up() and down() functions. Add barrier movement.

gameobjects.py

@@ -9,10 +9,10 @@ class GameObject:
     def draw(self, surface):
         surface.blit(self.image, self.rect)
     def set_position(self, x, y): # TODO: FIX CENTERING
-        self.rect.x = x - self.image.get_width() / 2
-        self.rect.y = y - self.image.get_height() / 2
-        self.x = x - self.image.get_width() / 2
-        self.y = y - self.image.get_width() / 2
+        self.rect.x = x
+        self.rect.y = y
+        self.x = x
+        self.y = y
     def move(self, dx, dy):
         self.set_position(self.rect.x + dx, self.rect.y + dy)
     def set_size(self, width, height):
@@ -21,12 +21,39 @@ class GameObject:
     def scale_by(self, scale):
         self.image = pygame.transform.scale(self.image, (self.image.get_width() * scale, self.image.get_height() * scale))
         self.rect = self.image.get_rect(topleft=(self.x,self.y))
+    def get_position(self):
+        return (self.x, self.y)
     
     
         
 class Horse(GameObject):
+    default_vacceleration = 1
+    vspeed = 0
+    vacceleration = 0
     def __init__(self, image_path, x, y):
+        self.vspeed = 0
+        self.vacceleration = 0
         super().__init__(image_path, x, y)
+    def apply_vspeed(self):
+        pos = self.get_position()
+        self.set_position(pos[0], pos[1] + self.vspeed)
+    def apply_vacceleration(self):
+        self.vspeed += self.vacceleration
+    def set_vspeed(self, speed):
+        self.vspeed = speed
+    def add_vspeed(self, delta):
+        self.vspeed += delta
+    def set_vacceleration(self, vacceleration):
+        self.vacceleration = vacceleration
+    def up(self):
+        self.set_vacceleration(-self.default_vacceleration)
+    def down(self):
+        self.set_vacceleration(self.default_vacceleration)
+    def stay(self):
+        self.set_vacceleration(0)
+
+
+
 
 class Background(GameObject):
     def __init__(self, image_path, x, y):