save project

snake.py

@@ -6,30 +6,57 @@ pygame.init()
 
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
-
 FPSCLOCK = pygame.time.Clock()
+
 # 背景
 background = pygame.image.load('bg.png')
-right = pygame.image.load('right.png')
-food = pygame.image.load('apple.png')
-body = pygame.image.load('body.png')
+right = pygame.image.load('right.png')     #头 右
+food = pygame.image.load('apple.png')      #食物 Apple
+body = pygame.image.load('body.png')       #身体
+left = pygame.image.load('left.png')       #left
+up = pygame.image.load('up.png')           #up
+down = pygame.image.load('down.png')       #down
 
 x,y = 240,120
-
 position=[(180,90),(180,120),(210,120),(x,y)]
 
+setheading="right"
+snake_head = right
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    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_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
+    elif setheading == "left":
+        x -= 30
+    elif setheading == "up":
+        y -= 30
+    else:
+        y += 30
     position.append((x,y))
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, position[-1])
+    screen.blit(snake_head, position[-1])    #
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body,position[i])