fixed tractor's trail and improved some visuals

source/area/tractor.py

@@ -148,29 +148,53 @@ class Tractor:
 
 
     def draw_tractor(self, win):
-
         imageTractor = pygame.transform.scale(self.image, (TILE_SIZE, TILE_SIZE))
         win.blit(imageTractor, (self.rect.x, self.rect.y))
         pygame.display.flip()
         
+     
+    def store_tile_image(self, tile):
+        return pygame.image.load(tile.image).convert_alpha()
+
+    def restore_tile_image(self, screen, tile):
+        image = pygame.image.load(tile.image).convert_alpha()
+        image = pygame.transform.scale(image, (TILE_SIZE, TILE_SIZE))
+        screen.blit(image, (tile.x, tile.y))
+        pygame.display.update()
+
+
+
 #translates move_list generated by bfs into the actual movement:
 def do_actions(tractor, WIN, move_list):
-    trail = pygame.image.load("resources/images/background.jpg").convert_alpha()
+    # trail = pygame.image.load("resources/images/background.jpg").convert_alpha()
-    trail = pygame.transform.scale(trail, (TILE_SIZE, TILE_SIZE))
+    # trail = pygame.transform.scale(trail, (TILE_SIZE, TILE_SIZE))
+    tile_images = {}
+    for tile in tiles:
+        tile_images[(tile.x, tile.y)] = tractor.store_tile_image(tile)
     
     pygame.display.update()
     for move in move_list:
-        WIN.blit(trail, (tractor.rect.x, tractor.rect.y, TILE_SIZE, TILE_SIZE))
+        # WIN.blit(trail, (tractor.rect.x, tractor.rect.y, TILE_SIZE, TILE_SIZE))
+        current_tile = None
+        for tile in tiles:
+            if tile.x == tractor.rect.x and tile.y == tractor.rect.y:
+                current_tile = tile
+                break
+        if current_tile:
+            tractor.restore_tile_image(WIN, current_tile)
+
         if move == "move":
             tractor.move()            
         elif move == "rotate_right":
             tractor.rotate_to_right()
         elif move == "rotate_left":
             tractor.rotate_to_left()
+
         tractor.draw_tractor(WIN)
         pygame.display.update()
         time.sleep(0.5)
 
+
 #displays results of the "work_on_field" function next to the field:
 def display_work_results(screen, text, position):
     font = pygame.font.Font(None, 30)

source/main.py

@@ -26,13 +26,10 @@ pygame.display.set_caption('Intelligent tractor')
 
 def main():
     run = True
-
     window = drawWindow(WIN)
     pygame.display.update()
 
 
-
-
 #Tractor initialization:
     tractor = Tractor(0*TILE_SIZE, 0*TILE_SIZE, 2, None, None)
     tractor.rect.x += fieldX  
@@ -75,9 +72,7 @@ def main():
         print(moves)
 
 
-
         # movement based on route-planning:
-
         tractor.draw_tractor(WIN)
         time.sleep(1)
         if moves != False:
@@ -216,6 +211,15 @@ def main():
 
         #update the initial state for the next target:
         istate = Istate(tile_x, tile_y, tractor.direction)
+
+        #old goalTile is displayed with a black border - to show that it was an old target:
+        tiles[tile_index].image = "resources/images/sampling_old_goal.png"
+        image = pygame.image.load(tiles[tile_index].image).convert()
+        image = pygame.transform.scale(image, (TILE_SIZE, TILE_SIZE))
+        WIN.blit(image, (tiles[tile_index].x, tiles[tile_index].y))
+        pygame.display.flip()
+        tractor.draw_tractor(WIN)
+
         time.sleep(2)
         print("\n")