added debug overview

index.rst

@@ -72,6 +72,7 @@ The main documentation for the site is organized into the following sections:
    tutorials/plugins/index
    tutorials/platform/index
    tutorials/misc/index
+   tutorials/debug/index
 
 .. toctree::
    :maxdepth: 1

tutorials/debug/index.rst

@@ -0,0 +1,9 @@
+Debug
+=====
+
+.. toctree::
+   :maxdepth: 1
+   :name: toc-learn-features-debug
+
+   overview_of_debugging_tools
+

tutorials/debug/overview_of_debugging_tools.rst

@@ -0,0 +1,106 @@
+.. _doc_overview_of_debugging_tools:
+
+Overview of debugging tools
+===========================
+
+Introduction
+------------
+
+When developing your game, you would want to test your game and debug when problems occurred. Godot provides several debugging options and tools which aid your debugging process.
+
+Debug options
+-------------
+
+There are a few options that you can enable when running your game in the editor which can help you in debugging your game.
+These options are located in ``DEBUG`` in the main menus.
+
+.. image:: img/overview_debug.png
+
+Here are the descriptions of the options:
+
+Deploy with Remote Debug
+++++++++++++++++++++++++
+
+When exporting and deploying, the resulting executable will attempt to connect to the IP of your computer, in order to be debugged.
+
+Small Deploy with Network FS
+++++++++++++++++++++++++++++
+
+Export or deploy will produce minimal executable. The filesystem will be provided from the project by the editor over the network.
+On Android, deploy will use the USB cable for faster performance. This option speeds up testing for games with a large footprint.
+
+Visible Collision Shapes
+++++++++++++++++++++++++
+
+Collision shapes and raycast nodes(for 2D and 3D) will be visible on the running game.
+
+Visible Navigation
+++++++++++++++++++
+
+Navigation meshes and polygons will be visible on the running game.
+
+Sync Scene Changes
+++++++++++++++++++
+
+Any changes made to the scene in the editor will be replicated in the running game.
+When used remotely on a device, this is more efficient with network filesystem.
+
+Sync Script Changes
++++++++++++++++++++
+
+Any script that is saved will be reloaded on the running game.
+When used remotely on a device, this is more efficient with network filesystem.
+
+Debugging tools
+---------------
+
+The ``Debugger`` is the second option in the bottom panel. Click on it and a new panel occurs.
+
+.. image:: img/overview_debugger.png
+
+The ``Debugger`` provides certain tools under different tabs.
+
+Here are some brief descriptions of the tools:
+
+Debugger
+++++++++
+
+Monitor the game running process.
+
+Errors
+++++++
+
+Print out errors when running the game.
+
+Profiler
+++++++++
+
+Profiling the performance of the any function call in the running game.
+
+Monitors
+++++++++
+
+Monitors the performance of the running game, such as the fps and physics collisions.
+
+Video Mem
++++++++++
+
+Listing the video memory usage of the running game.
+
+Misc
+++++
+
+Miscellaneous options for debug. 
+
+
+Remote in Scene dock
+--------------------
+
+When running your game, a bar will occur at the top of the ``Scene`` dock. You can switch to ``Remote`` and inspect or change the nodes' parameters in the running game. 
+
+.. image:: img/overview_remote.png
+
+.. note:: Some editor settings related to debugging can be find in the ``Editor Settings``, under Network>Debug and Debugger sections.
+
+
+