save project

snake.py

@@ -13,15 +13,42 @@ 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
 position = [(180,90),(180,120),(210,120),(x,y)]
 position = [(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
+        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
+    else:
+        y += 30
     position.append((x,y))
     position.append((x,y))
     position.pop(0)
     position.pop(0)
     #y += 30
     #y += 30
@@ -30,7 +57,7 @@ while True:
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    screen.blit(snake_head, (x, y))
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
     for i in range(len(position)-1):
         screen.blit(body,position[i])
         screen.blit(body,position[i])
@@ -41,4 +68,4 @@ while True:
     screen.blit(food, (360, 300))
     screen.blit(food, (360, 300))
     # 刷新画面
     # 刷新画面
     pygame.display.update()
     pygame.display.update()
-    FPSCLOCK.tick(5)
+    FPSCLOCK.tick(3)
\ No newline at end of file