Snake-case .tscn, .gd and _on_* callbacks

Co-authored-by: Doug Thompson <s-git@dougthompson.co.uk>

tutorials/plugins/editor/3d_gizmos.rst

@@ -30,7 +30,7 @@ This would be a basic setup:
 
 ::
 
-    # MyCustomGizmoPlugin.gd
+    # my_custom_gizmo_plugin.gd
     extends EditorNode3DGizmoPlugin
 
 
@@ -45,7 +45,7 @@ This would be a basic setup:
     extends EditorPlugin
 
 
-    const MyCustomGizmoPlugin = preload("res://addons/my-addon/MyCustomGizmoPlugin.gd")
+    const MyCustomGizmoPlugin = preload("res://addons/my-addon/my_custom_gizmo_plugin.gd")
 
     var gizmo_plugin = MyCustomGizmoPlugin.new()
 
@@ -126,7 +126,7 @@ So the final plugin would look somewhat like this:
     extends EditorNode3DGizmoPlugin
 
 
-    const MyCustomNode3D = preload("res://addons/my-addon/MyCustomNode3D.gd")
+    const MyCustomNode3D = preload("res://addons/my-addon/my_custom_node_3d.gd")
 
 
     func _init():
@@ -177,12 +177,12 @@ for the Node3D nodes we want to target.
 
 ::
 
-    # MyCustomGizmoPlugin.gd
+    # my_custom_gizmo_plugin.gd
     extends EditorNode3DGizmoPlugin
 
 
-    const MyCustomNode3D = preload("res://addons/my-addon/MyCustomNode3D.gd")
-    const MyCustomGizmo = preload("res://addons/my-addon/MyCustomGizmo.gd")
+    const MyCustomNode3D = preload("res://addons/my-addon/my_custom_node_3d.gd")
+    const MyCustomGizmo = preload("res://addons/my-addon/my_custom_gizmo.gd")
 
 
     func _init():
@@ -201,7 +201,7 @@ This way all the gizmo logic and drawing methods can be implemented in a new cla
 
 ::
 
-    # MyCustomGizmo.gd
+    # my_custom_gizmo.gd
     extends EditorNode3DGizmo
 
 

tutorials/plugins/editor/inspector_plugins.rst

@@ -52,7 +52,7 @@ you should remove the instance you have added by calling
 
 
     func _enter_tree():
-        plugin = preload("res://addons/my_inspector_plugin/MyInspectorPlugin.gd").new()
+        plugin = preload("res://addons/my_inspector_plugin/my_inspector_plugin.gd").new()
         add_inspector_plugin(plugin)
 
 
@@ -87,7 +87,7 @@ you should remove the instance you have added by calling
 Interacting with the inspector
 ------------------------------
 
-To interact with the inspector dock, your ``MyInspectorPlugin.gd`` script must
+To interact with the inspector dock, your ``my_inspector_plugin.gd`` script must
 extend the :ref:`class_EditorInspectorPlugin` class. This class provides several
 virtual methods that affect how the inspector handles properties.
 
@@ -112,10 +112,10 @@ specifically add :ref:`class_EditorProperty`-based controls.
 .. tabs::
  .. code-tab:: gdscript GDScript
 
-    # MyInspectorPlugin.gd
+    # my_inspector_plugin.gd
     extends EditorInspectorPlugin
 
-    var RandomIntEditor = preload("res://addons/my_inspector_plugin/RandomIntEditor.gd")
+    var RandomIntEditor = preload("res://addons/my_inspector_plugin/random_int_editor.gd")
 
 
     func _can_handle(object):
@@ -149,8 +149,8 @@ specifically add :ref:`class_EditorProperty`-based controls.
             return true;
         }
 
-        public override bool _ParseProperty(GodotObject @object, Variant.Type type, 
-            string name, PropertyHint hintType, string hintString, 
+        public override bool _ParseProperty(GodotObject @object, Variant.Type type,
+            string name, PropertyHint hintType, string hintString,
             PropertyUsageFlags usageFlags, bool wide)
         {
             // We handle properties of type integer.
@@ -197,7 +197,7 @@ followed by ``set_bottom_editor()`` to position it below the name.
 .. tabs::
  .. code-tab:: gdscript GDScript
 
-    # RandomIntEditor.gd
+    # random_int_editor.gd
     extends EditorProperty
 
 

tutorials/plugins/editor/making_main_screen_plugins.rst

@@ -124,7 +124,7 @@ Add a script to the button like this:
     extends Button
 
 
-    func _on_PrintHello_pressed():
+    func _on_print_hello_pressed():
         print("Hello from the main screen plugin!")
 
  .. code-tab:: csharp

tutorials/plugins/editor/visual_shader_plugins.rst

@@ -32,7 +32,7 @@ all you need to initialize your plugin.
 
 ::
 
-    # PerlinNoise3D.gd
+    # perlin_noise_3d.gd
     @tool
     extends VisualShaderNodeCustom
     class_name VisualShaderNodePerlinNoise3D