save project

snake.py

-import pygame
+import pygame,random
 from pygame import locals
 # 初始化pygame，为使用pygame做准备
 pygame.init()
@@ -6,21 +6,62 @@ background = pygame.image.load('bg.png')
 right= pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+down = pygame.image.load('down.png')
+up = pygame.image.load('up.png')
+left = pygame.image.load('left.png')
+setheading = 'right'
+snake_head = right
+apple_x = 360
+apple_y = 300
 # 创建一个窗口
 screen=pygame.display.set_mode((660,480))
 FPSCLOCK = pygame.time.Clock()
 x,y=240,120
+pos=[(180,90),(180,120),(210,120),(x,y)]
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             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 == "up":    
+        y-=30
+    elif setheading == "down":    
+        y+=30
+    if (x,y)==(apple_x,apple_y):
+        apple_x = 30*random.randint(0,20)
+        apple_y = 30*random.randint(0,16)
+    pos.append((x,y))
+    pos.pop(0)
     screen.blit(background,(0,0))
-    screen.blit(right,(x,y))
-    screen.blit(food,(300,300))
-    screen.blit(body,(210,120))
-    screen.blit(body,(180,120))
-    screen.blit(body,(180,90))
+    screen.blit(snake_head,pos[-1])
+    screen.blit(food,(apple_x,apple_y))
+    for i in pos[0:-1]:
+        screen.blit(body,i)
     pygame.display.update()
     FPSCLOCK.tick(3)
 
+    
+
+
+
+            
+        
\ No newline at end of file