save project

snake.py

@@ -10,26 +10,51 @@ screen = pygame.display.set_mode((660, 480))
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
-down = pygame.image.load('down.png')
-up = pygame.image.load('up.png')
 left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 x=240
 y=120
 p= [(180,90),(180,120),(210,120),(x,y)]
-sethead =right
+setheading = "right"
 snake_head = right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:        
             exit()
-    x+=30
+        elif event.type ==locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading !='left':
+                setheading = "right"
+                snake_head = right
+            if event.key == locals.K_LEFT and setheading !='right':
+                setheading = "left"
+                snake_head = left
+            if event.key == locals.K_DOWN and setheading !='up':
+                setheading = "down"
+                snake_head = down
+            if event.key == locals.K_UP and setheading !='down':
+                setheading = "up"
+                snake_head = up
+
+    if setheading=='right':
+        x+=30
+    if setheading=='left':
+        x-=30
+    if setheading=='down':
+        y+=30
+    if setheading=='up':
+        y-=30
+    
+    
+    
+    
     p.append((x,y))
     p.pop(0)
     screen.blit(background, (0, 0))
 
-    screen.blit(right, (x, y))
+    screen.blit(snake_head, (x, y))
     for i in range(len(p)-1):
         screen.blit(body,p[i])
     screen.blit(food,(360,300))