save project

snake.py

@@ -14,22 +14,51 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 body = pygame.image.load('body.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 x,y=240,120
 x,y=240,120
+position=[(180,90),(180,120),(210,120),(x,y)]
+setheading="right"
+snake_head=right
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
-    # 将背景图画上去
-    x+=30
-
+        if 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_UP and setheading !="down":
+                 setheading ="up"
+                 snake_head=up
+            if event.key==locals.K_DOWN and setheading !="up":
+                 setheading ="down"
+                 snake_head=down
+    if setheading =="right":
+        x+=30
+    elif setheading =="left":
+        x-=30
+    elif setheading =="up":
+        y-=30
+    else:
+        y+=30
+    position.append((x,y))
+    position.pop(0)
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snake_head, position[-1])
+
+    for i in range(len(position)-1):
+            screen.blit(body,position[i])
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
-    screen.blit(body, (210, 120))
-    screen.blit(body, (180, 120))
-    screen.blit(body, (180, 90))
+    # screen.blit(body, (210, 120))
+    # screen.blit(body, (180, 120))
+    # screen.blit(body, (180, 90))
     # 将果实画上去
     # 将果实画上去
     screen.blit(food, (360, 300))
     screen.blit(food, (360, 300))
     # 刷新画面
     # 刷新画面