gd: added input addon

addons/guide/inputs/guide_input_mouse_axis_2d.gd

@@ -0,0 +1,42 @@
+@tool
+class_name GUIDEInputMouseAxis2D
+extends GUIDEInput
+
+
+# we don't get mouse updates when the mouse is not moving, so this needs to be 
+# reset every frame
+func _needs_reset() -> bool:
+	return true
+
+func _begin_usage() -> void:
+	# subscribe to mouse movement events
+	_state.mouse_position_changed.connect(_refresh)
+	_refresh()
+
+func _end_usage() -> void:
+	# unsubscribe from mouse movement events
+	_state.mouse_position_changed.disconnect(_refresh)
+
+func _refresh() -> void:
+	var delta:Vector2 = _state.get_mouse_delta_since_last_frame()
+	_value.x = delta.x
+	_value.y = delta.y
+		
+func is_same_as(other:GUIDEInput):
+	return other is GUIDEInputMouseAxis2D
+
+
+func _to_string():
+	return "(GUIDEInputMouseAxis2D)"
+
+
+func _editor_name() -> String:
+	return "Mouse Axis 2D"
+
+	
+func _editor_description() -> String:
+	return "Relative mouse movement on 2 axes."
+
+
+func _native_value_type() -> GUIDEAction.GUIDEActionValueType:
+	return GUIDEAction.GUIDEActionValueType.AXIS_2D