save project

snake.py

@@ -7,6 +7,11 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 apple = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+up = pygame.image.load('up.png')
+left = pygame.image.load('left.png')
+down = pygame.image.load('down.png')
+setheading = "right"
+snake_head = right
 # 创建一个窗口
 x, y = 240, 120
 pos = [(180,90),(180,120),(210,120),(x,y)]
@@ -15,11 +20,32 @@ while True:
         print(event)
         if event.type == locals.QUIT:
             exit()
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_UP and setheading != "down":
+                setheading = "up"
+                snake_head = up
+            elif event.key == locals.K_DOWN and setheading != "up":
+                setheading = "down"
+                snake_head = down
+            elif event.key == locals.K_LEFT and setheading != "right":
+                setheading = "left"
+                snake_head = left
+            else: 
+                setheading = "right"
+                snake_head = right
+    if setheading == "right":
+        x += 30
+    if setheading == "left":
+        x -= 30
+    if setheading == "down":
+        y += 30
+    if setheading == "up":
+        y -= 30     
     screen.blit(background,(0,0))
-    x+=30
+   
     pos.append((x,y))
     pos.pop(0)
-    screen.blit(right,pos[-1])
+    screen.blit(snake_head,pos[-1])
     for i in range(len(pos)-1):
         screen.blit(body,(pos[i]))
     # screen.blit(body,(150,120))
@@ -29,4 +55,4 @@ while True:
     screen.blit(apple,(120,300))
     pygame.display.update()
     aaz = pygame.time.Clock()
-    aaz.tick(3)
+    aaz.tick(10)