v. 1.06

drawUI.py

@@ -1,9 +1,13 @@
 from Main.constants import *
 import pygame
 
+
 def drawUI(board, display, tractor_horizontal_index, tractor_vertical_index):
+    display.fill(WHITE)
     makeField(board, display)
     drawTractor(display, tractor_horizontal_index, tractor_vertical_index)
+    pygame.display.update()
+
 
 def makeField(board, display):
     color = BLACK

driving.py

@@ -16,12 +16,16 @@ def cruiseControl(cruiseControl, horizontal_change, vertical_change, tractor_hor
 def manualTurning(event, tractor_horizontal_index, tractor_vertical_index, horizontal_change=0, vertical_change=0):
     if event.type == pygame.KEYDOWN:
         if event.key == pygame.K_LEFT and tractor_horizontal_index > 0:
+            vertical_change = 0
             horizontal_change = -1
         elif event.key == pygame.K_RIGHT and tractor_horizontal_index < HORIZONTAL_TILES_NUMBER - 1:
             horizontal_change = 1
+            vertical_change = 0
         elif event.key == pygame.K_UP and tractor_vertical_index > 0:
             vertical_change = -1
+            horizontal_change = 0
         elif event.key == pygame.K_DOWN and tractor_vertical_index < VERTICAL_TILES_NUMBER - 1:
             vertical_change = 1
+            horizontal_change = 0
 
     return horizontal_change, vertical_change

main.py

@@ -38,12 +38,12 @@ while working:
                                                                    tractor_vertical_index, horizontal_change,
                                                                    vertical_change)
     tractor_horizontal_index += horizontal_change
-
     tractor_vertical_index += vertical_change
-    display.fill(WHITE)
+
+
     drawUI.drawUI(board, display, tractor_horizontal_index, tractor_vertical_index)
 
-    pygame.display.update()
+
     clock.tick(FPS)
 
     horizontal_change, vertical_change = driving.cruiseControl(cruiseControl, horizontal_change, vertical_change,