save project

snake.py

@@ -8,21 +8,52 @@ pygame.init()
 screen = pygame.display.set_mode((660,480))
 
 FPSCLOCK = pygame.time.Clock() #pygame时钟，控制游戏速度（帧数）
-#载入图片
+#背景
 background = pygame.image.load('bg.png') #背景图
-right = pygame.image.load('right.png') #头 朝右
-food = pygame.image.load('apple.png') #食物 苹果
+right = pygame.image.load('right.png') #头 
+food = pygame.image.load('apple.png') #食物 苹果朝右
 body = pygame.image.load('body.png')
+left = pygame.image.load('left.png') #头 朝左
+up = pygame.image.load('up.png') #头 朝上
+down = pygame.image.load('down.png') #头 朝下
 
 x,y = 240,120  #初始化贪吃蛇的头的坐标
 position = [(180,90),(180,120),(210,120),(x,y)]
 
+setheading = "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()
-    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 == "down":
+        y+=30
+    else:
+        y-=30
+        
+
+    
     position.append((x,y))
     position.pop(0)
     #将背景图画上去