save project

snake.py

@@ -6,27 +6,63 @@ pygame.init()
 
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
+fps = pygame.time.Clock()
 
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 
+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()
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading != "left":
+                setheading = "right"
+            if event.key == locals.K_LEFT and setheading != "right":
+                setheading = "left"
+            if event.key == locals.K_UP and setheading != "down":
+                setheading = "up"
+            if event.key == locals.K_DOWN and setheading != "up":
+                setheading = "down"
+    if setheading == "right":
+        x+=30
+        snake_head = right
+    elif setheading == "left":
+        x-=30
+        snake_head = left
+    elif setheading == "up":
+        y-=30
+        snake_head = up
+    else:
+        y+=30
+        snake_head = down
+    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, (240, 120))
+    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
-    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
     screen.blit(food, (360, 300))
     # 刷新画面
-    pygame.display.update()
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+    pygame.display.update()
+    fps.tick(3)
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