save project

snake.py

@@ -5,7 +5,6 @@ pygame.init()
 # 创建一个窗口
 # 创建一个窗口
 FPSCLOCK = pygame.time.Clock()
 FPSCLOCK = pygame.time.Clock()
 screen = pygame.display.set_mode((660, 480))
 screen = pygame.display.set_mode((660, 480))
-
 # 背景
 # 背景
 background = pygame.image.load('bg.png')
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
@@ -16,38 +15,34 @@ up = pygame.image.load('up.png')
 down = pygame.image.load('down.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"
 setheading = "right"
 snake_head = 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()
-    if event.type == locals.KEYDOWN:
-        if event.type == locals.K_RIGHT and setheading !="left":
-            setheading = 'right'
-            snake_head = right
-        if event.type == locals.K_RIGHT and setheading !="right":
-            setheading = 'left'
-            snake_head = left
-        if event.type == locals.K_RIGHT and setheading !="down":
-            setheading = 'up'
-            snake_head = up
-        if event.type == locals.K_RIGHT and setheading !="up":
-            setheading = 'down'
-            snake_head = down
-
-    if snake_head == "right":
+        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
         x += 30
-    elif snake_head == "left":
+    elif setheading == "left":
         x -= 30
         x -= 30
-    elif snake_head == "up":
-        y += 30
-    else:
+    elif setheading == "up":
         y -= 30
         y -= 30
-
+    else:
+        y += 30
     position.append((x,y))
     position.append((x,y))
     position.pop(0)
     position.pop(0)
     # 将背景图画上去
     # 将背景图画上去
@@ -57,7 +52,6 @@ while True:
     # 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])
-
     # 将果实画上去
     # 将果实画上去
     screen.blit(food, (360, 300))
     screen.blit(food, (360, 300))
     # 刷新画面
     # 刷新画面