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

main.py

@@ -9,26 +9,44 @@ screen = pygame.display.set_mode((WIDTH, HEIGHT))
 pygame.display.set_caption("NIC_Project")
 
 WHITE = (255, 255, 255)
-RED = (255, 0, 0)
 
-
-grass = Background("images/grass.jpg", WIDTH/2, HEIGHT/2)
-horse1 = Horse("images/horse.png",50, 50)
+grass = Background("images/grass.jpg", 0, 0)
+horse1 = Horse("images/horse.png", 50, 50)
 barrier1 = Barrier("images/barrier.png", 400, 300)
 
-horse1.set_size(75, 75)
+BARRIER_SPEED = 1
 
+horse1.set_size(75, 75)
 grass.set_size(WIDTH, HEIGHT)
 
 gameobjects = [grass, horse1, barrier1]
+horses = [horse1]
+barriers = [barrier1]
 while True:
     for event in pygame.event.get():
         if event.type == pygame.QUIT:
             pygame.quit()
             sys.exit()
+
+    keys = pygame.key.get_pressed()
+    
+    for horse in horses:
+        if keys[pygame.K_UP]:    
+            horse.up()           
+        elif keys[pygame.K_DOWN]:
+            horse.down()         
+        else:
+            horse.stay()          
+
+        horse.apply_vacceleration()
+        horse.apply_vspeed()         
+        horse.draw(screen)           
+
+    for barrier in barriers:
+        barrier.move(-BARRIER_SPEED, 0)
+
     for object in gameobjects:
         object.draw(screen)
+
     pygame.display.flip()
-    
     pygame.time.Clock().tick(60)
-