save project

snake.py

@@ -49,37 +49,46 @@ while True:
 
     # 设置贪吃蛇的头部坐标
     if setheading == "right":
-        x +=30
+        x +=10
     elif setheading == "left":
-        x -=30
+        x -=10
     elif setheading == "up":
-        y -=30
+        y -=10
     else:
-        y +=30
+        y +=10
     position.append((x, y))
 
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
-    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])
+    screen.blit(snake_head, position[-1])
     info='SOCRE:'+str(s)+'!'
     text=mf.render(info,True,(0,0,0))
     screen.blit(text,(540,10))
     # 将果实画上去
     screen.blit(food, (apple_x, apple_y))
     if x==apple_x and y==apple_y:
-        t+=0.2
+        if s<5:
+            t+=0.2
+        if s>=5 and s<10:
+            t+=0.5
+        if s>=10 and s<20:
+            t+=0.7
+        if s>=20:
+            t+=1
         s+=1
         long=1
-        apple_x=random.randint(1,22)*30-30
-        apple_y=random.randint(1,16)*30-30
+        apple_x=random.randint(2,22)*30-30
+        apple_y=random.randint(2,16)*30-30
     if long==0:
         position.pop(0)
-
-
+    if x<0 or y<0 or x>630 or y>450:
+        exit()
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(t)
\ No newline at end of file