save project

snake.py

@@ -12,16 +12,46 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 body = pygame.image.load('body.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
+
+
 
 
 x,y=240,120
 x,y=240,120
-a=[(180,90),(180,90),(180,120),(210,120),(x,y)]
+a=[(180,90),(180,120),(210,120),(x,y)]
+setheading = "right"
+snake_head=right
+
 
 
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
-    x+=30
+        elif 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=="up":
+        y-=30    
+    else:
+        y+=30
+    
     a.append((x,y))
     a.append((x,y))
     a.pop(0)
     a.pop(0)
     # 将背景图画上去
     # 将背景图画上去
@@ -32,9 +62,7 @@ while True:
     for i in range(len(a)-1):
     for i in range(len(a)-1):
         screen.blit(body, a[i])
         screen.blit(body, a[i])
     # 将果实画上去
     # 将果实画上去
-    x+=30
-    a.append((x,y))
-    a.pop(0)
+    
     screen.blit(food, (360, 300))
     screen.blit(food, (360, 300))
     # 刷新画面
     # 刷新画面
     pygame.display.update()
     pygame.display.update()