save project

snake.py

@@ -5,28 +5,59 @@ from pygame import locals
 pygame.init()
 
 # 创建一个窗口
-screen = pygame.display.set_mode((660, 480))
+screen = pygame.display.set_mode((800, 880))
 
 # 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')
-
+up = pygame.image.load("up.png")
+left = pygame.image.load("left.png")
+down = pygame.image.load("down.png")
+snake_head = right
+heading = "right"
+head_x = 240
+head_y = 120
+FPS = pygame.time.Clock()
+position = [(180,90),(180,120),(210,120),(head_x,head_y)]
 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 == pygame.KEYDOWN: 
+            if event.key == pygame.K_RIGHT and heading != "left":
+                heading = "right"
+                snake_head = right
+            if event.key == pygame.K_LEFT and heading != "right":
+                heading = "left"
+                snake_head = left
+            if event.key == pygame.K_UP and heading != "down":
+                heading = "up"
+                snake_head = up
+            if event.key == pygame.K_DOWN and heading != "up":
+                heading = "down"
+                snake_head = down        
     # 将背景图画上去
+    if heading == "right":
+        head_x += 30
+    if heading == "left":
+        head_x -= 30
+    if heading == "up":
+        head_y -= 30
+    if heading == "down":
+        head_y += 30
+    position.append((head_x,head_y))
+    position.pop(0)
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (240, 120))
+    screen.blit(snake_head, position[-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 index in range(len(position)-1):
+        screen.blit(body,position[index])
     # 将果实画上去
     screen.blit(food, (360, 300))
+    FPS.tick(5)
     # 刷新画面
     pygame.display.update()
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