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snake.py

@@ -40,22 +40,21 @@ while True:
                 snake_head = right
                 snake_head = right
     if setheading=="right":
     if setheading=="right":
         x+=30
         x+=30
-    if setheading=="left":
+    elif setheading=="left":
         x-=30
         x-=30
-    if setheading=="up":
+    elif setheading=="up":
         y-=30
         y-=30
-    if setheading=="down":
+    else:
         y+=30
         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
     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(snake_head, (x,y))
+    screen.blit(snake_head, position[-1])
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
-    screen.blit(body, position[2])
-    screen.blit(body, position[1])
-    screen.blit(body, position[0])
+    for i in range(len(position)-1):
+        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

yf.py

+import pygame
+from pygame import locals
+
+# 初始化pygame，为使用硬件做准备
+pygame.init()
+
+# 创建一个窗口
+screen = pygame.display.set_mode((660, 480))
+
+FPSCLOCK=pygame.time.Clock()
+# 背景
+background = pygame.image.load('bg.png')
+right = pygame.image.load('right.png')
+left = pygame.image.load('left.png')
+down = pygame.image.load('down.png')
+up = pygame.image.load('up.png')
+food = pygame.image.load('apple.png')
+body = pygame.image.load('body.png')
+
+x,y=240,120
+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:
+            exit()
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_UP and setheading != "down":
+                setheading = "up"
+                snake_head = up
+                y-=30
+                position.append((x,y))
+                position.pop(0)
+            if event.key == locals.K_DOWN and setheading != "up":
+                setheading = "down"
+                snake_head = down
+                y+=30
+                position.append((x,y))
+                position.pop(0)
+            if event.key == locals.K_LEFT and setheading != "right":
+                setheading = "left"
+                snake_head = left
+                x-=30
+                position.append((x,y))
+                position.pop(0)
+            if event.key == locals.K_RIGHT and setheading != "left":
+                setheading = "right"
+                snake_head = right
+                x+=30
+                position.append((x,y))
+                position.pop(0)
+    # 将背景图画上去
+    screen.blit(background, (0, 0))
+    # 将贪吃蛇画上去
+    screen.blit(snake_head, position[-1])
+    # 将贪吃蛇的身体画上去
+    for i in range(len(position)-1):
+        screen.blit(body, position[i])
+    # 将果实画上去
+    screen.blit(food, (360, 300))
+    # 刷新画面
+    pygame.display.update()
+    FPSCLOCK.tick(2)
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