diff --git a/bin/client.py b/bin/client.py
index e8c909e..f4c73d5 100644
--- a/bin/client.py
+++ b/bin/client.py
@@ -48,7 +48,14 @@ class RenderThread(mp.Process, pyglet.window.Window):
                              caption=str(self.window_c['caption']),
                              visible=bin.tools.mbool(self.window_c['visible']))
 
+    """
+    draws
+    """
+
     def on_draw(self):
+        pass
+
+    def part_draw(self):
         # render parts
         for ship in self.parts:
             ship_poi = ship['brain'][3]
diff --git a/sys_value/parts.json5 b/sys_value/parts.json5
new file mode 100644
index 0000000..fd129ac
--- /dev/null
+++ b/sys_value/parts.json5
@@ -0,0 +1,20 @@
+{
+  'part id': [
+    [
+      'float',
+      'float'
+    ],
+    /* 坐标轴偏移量
+        指的是部件的碰撞箱左上角到贴图左上角的距离*/
+    [
+      'float',
+      'float'
+    ],
+    /* 碰撞箱大小 （暂时只支持方形碰撞箱）
+    坐标轴也是从左上开始*/
+    'xxx.png'
+    /* 贴图文件名
+    可以为包含文件夹的 比如：./engine/xxx.png*/
+  ],
+  '': []
+}
\ No newline at end of file