save project

snake.py

@@ -16,46 +16,45 @@ up = pygame.image.load('up.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 
+head="right"
 setheading=right
-
 x,y=240,120
-screen.blit(right, (x, y))
 LEN=[(180, 90),(180, 120),(240, 120),(x,y)]
 while True:
-    
-    LEN.append((x,y))
-    LEN.pop(0)
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-        if event.type==locals.KEYDOWN:
-            # if event==K_RIGHT and setheading!=left:
-            #     setheading=right
-            # if event==K_DOWN and setheading!=up:
-            #     setheading=down
-            # if event==K_LEFT and setheading!=right:
-            #     setheading=left
-            # if event==K_UP and setheading!=down:
-            #     setheading=up
+        if event.type == locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and head!="left":
+                head="right"
+                setheading=right
+            if event.key==locals.K_DOWN and head!="up":
+                head="down"
+                setheading=down
+            if event.key==locals.K_LEFT and head!="right":
+                head="left"
+                setheading=left
+            if event.key==locals.K_UP and head!="down":
+                head="up"
+                setheading=up
             
-    if setheading==right:
-        screen.blit(right, (x, y))
+    if head=="right":
         x+=30
-    if setheading==down:
-        screen.blit(down, (x, y))
+    if head=="down":
         y+=30
-    if setheading==left:
-        screen.blit(left, (x, y))
+    if head=="left":
         x-=30
-    if setheading==up:
-        screen.blit(up, (x, y))
+    if head=="up":
         y-=30
+    LEN.append((x,y))
+    LEN.pop(0)
     
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    # screen.blit(right, (x, y))
+    screen.blit(setheading, (x, y))
+    
     # 将贪吃蛇的身体画上去
     for i in range(len(LEN)-1):
         screen.blit(body,LEN[i])