save project

snake.py

@@ -6,45 +6,60 @@ pygame.init()
 
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
-FPSCLOCK=pygame.time.Clock()
+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')
-x,y=240,120
-position=[(180,90),(180,120),(210,120),(x,y)]
-sethending='right'
-snake_head=right
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
+
+x, y = 240, 120
+position = [(180, 90), (180, 120), (210, 120), (x, y)]
+direction = '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()
-        elif event.type==locals.KEYDOWN:
-            if event.key==locals.K_RIGHT and  sethending +="left":
-                sethending='right'
-                snake_head=right
-            if event.key==locals.K_LEFT and  sethending +="right":
-                sethending='right'
-                snake_head=right
-            if event.key==locals.K_UP and  sethending +="down":
-                sethending='right'
-                snake_head=right
-            if event.key==locals.K_DOWN and  sethending +="up":
-                sethending='right'
-                snake_head=right
-    x+=30
-    position.append((x,y))
+        elif event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and direction != 'left':
+                direction = 'right'
+                snake_head = right
+            if event.key == locals.K_LEFT and direction != 'right':
+                direction = 'left'
+                snake_head = left
+            if event.key == locals.K_UP and direction != 'down':
+                direction = 'up'
+                snake_head = up
+            if event.key == locals.K_DOWN and direction != 'up':
+                direction = 'down'
+                snake_head = down
+    
+    if direction == 'right':
+        x += 30
+    elif direction == 'left':
+        x -= 30
+    elif direction == 'up':
+        y -= 30
+    elif direction == 'down':
+        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])
+    for i in range(len(position) - 1):
+        screen.blit(body, position[i])
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面