diff --git a/source/component/map.py b/source/component/map.py
index 0de0eda..40d08cf 100644
--- a/source/component/map.py
+++ b/source/component/map.py
@@ -1,5 +1,3 @@
-__author__ = 'marble_xu'
-
 import random
 import pygame as pg
 from .. import tool
diff --git a/source/component/plant.py b/source/component/plant.py
index 684065b..30b68cc 100644
--- a/source/component/plant.py
+++ b/source/component/plant.py
@@ -1,5 +1,3 @@
-__author__ = 'marble_xu'
-
 import random
 import pygame as pg
 from .. import tool
diff --git a/source/component/zombie.py b/source/component/zombie.py
index 73780f1..dd9835c 100644
--- a/source/component/zombie.py
+++ b/source/component/zombie.py
@@ -1,5 +1,3 @@
-__author__ = 'marble_xu'
-
 import pygame as pg
 from .. import tool
 from .. import constants as c
diff --git a/source/state/level.py b/source/state/level.py
index eda3bbe..6ef4e9b 100644
--- a/source/state/level.py
+++ b/source/state/level.py
@@ -1,5 +1,3 @@
-__author__ = 'marble_xu'
-
 import os
 import json
 import pygame as pg
diff --git a/source/state/screen.py b/source/state/screen.py
index a624460..d53f548 100644
--- a/source/state/screen.py
+++ b/source/state/screen.py
@@ -1,5 +1,3 @@
-__author__ = 'marble_xu'
-
 import pygame as pg
 from .. import tool
 from .. import constants as c
diff --git a/source/tool.py b/source/tool.py
index 0fdf565..52b179a 100644
--- a/source/tool.py
+++ b/source/tool.py
@@ -74,6 +74,7 @@ class Control():
                 self.mouse_click[0], _, self.mouse_click[1] = pg.mouse.get_pressed()
                 print('pos:', self.mouse_pos, ' mouse:', self.mouse_click)
 
+
     def main(self):
         while not self.done:
             self.event_loop()