save project

snake.py

@@ -3,7 +3,8 @@ from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
 pygame.init()
-
+x,y = 240,120
+l = [(210,120),(180,120),(180,90),(x,y)]
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 
@@ -12,21 +13,51 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-x,y = 240,120
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
+setheading = 'right'
+snake_head = right
 while True:
-    x +=30
+    
     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.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 == "down":
+        y += 30
+    else:
+        y -= 30
+    l.append((x,y))
+    l.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(snake_head, l[-1])
     # 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))
+
+    for i in range(len(l)-1):
+        screen.blit(body, l[i])
+    # screen.blit(body, (210, 120))
+    # screen.blit(body, (180, 120))
+    # screen.blit(body, (180, 90))
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面