save project

snake.py

@@ -25,27 +25,27 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-    if event.type == locals.KEYDOWN:
-        if event.key == locals.K_RIGHT and setheading != 'left':
-            setheading == 'right'
-            set_head = right
-        if event.key == locals.K_LEFT and setheading != 'right':
-            setheading == 'left'
-            set_head = left            
-        if event.key == locals.K_UP and setheading != 'down':
-            setheading == 'up'
-            set_head = right
-        if event.key == locals.K_DOWN and setheading != 'up':
-            setheading == 'down'
-            set_head = down
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading != 'left':
+                setheading == 'right'
+                set_head = right
+            if event.key == locals.K_LEFT and setheading != 'right':
+                setheading == 'left'
+                set_head = left            
+            if event.key == locals.K_UP and setheading != 'down':
+                setheading == 'up'
+                set_head = up
+            if event.key == locals.K_DOWN and setheading != 'up':
+                setheading == 'down'
+                set_head = down
     if setheading == "right":
         x += 30
     elif setheading == "left":
         x -= 30
-    if setheading == "up":
-        x -= 30
-    if setheading == "down":
-        x += 30
+    elif setheading == "up":
+        y -= 30
+    else:
+        y += 30
         
     # 将背景图画上去
     screen.blit(background, (0, 0))