VarTree

VarTree is a custom Tree node that allows you to monitor and display variable values in-game in a structured format.

Features

• Track and display any variable or expression in-game.
• Organize tracked variables into nested categories.

Usage

Properties

update_on_process: bool

If true, VarTree automatically calls update_all() every frame via _process().
Defaults to true. Set to false to update manually.

value_alignment: int

Controls the horizontal text alignment of the value column.
Values:

• 0 (Left)
• 1 (Center)
• 2 (Right)

Variable Options

These are options applied to individual variables through the mount_var method.

format_callback : Callable

The callback method should take the value as an input and return a string for display.

# Example formatter that displays a readable Vector2
func _format_vector2(_input : Vector2) -> String:
      return "X: %0.2f, Y: %02.f" % [_input.x, _input.y]

Button Options

There are currently no button options but I have plans to implement some.

Methods

mount_var(node: Node, path: String, options: Dictionary = {}) -> TreeItem

Mounts a variable from the given node to the tree. Returns the TreeItem associated with the variable.

• node: The node that owns the variable.
• path: The variable name including the category path.
  • If no category, then only include the variable_name. The variable will be mounted to the root of the tree.
• options: A dictionary including the options for the variable. Variable Options

# Example
$VarTree.mount_var(player, "mouse_position")
$VarTree.mount_var(self, "Player/Stats/current_health", {options ...})

mount_button(path: String, callback : Callable), options: Dictionary = {}) -> TreeItem

Mounts a clickable button to the tree. When the button is clicked, the callback method is called. Returns the TreeItem associated with the button.

• path: Works like the path parameter from the mount_var() method, however, the variable_name is replaced with the text for the button label.
• callback: The method called when the button is pressed.
• options: A dictionary including the options for the button. Button Options

# Example
$VarTree.mount_button("Player/Stats/Restore Health", _heal_player, {options ...})

func _heal_player() -> void:
   # heal the player...

update_all()

Gets and displays the current values of all mounted variables.

$VarTree.update_all()

Example Implementation

extends Node2D

# Reference to VarTree node
@onready var var_tree : VarTree = $CanvasLayer/VarTree

# Stores the seconds passed since start
var counter : float = 0.0

func _ready() -> void:
      # Mount the counter variable
      var_tree.mount_var(self, "Time Elapsed/counter", {
         "font_color" : Color.RED,
         "format_callback" : _format_float
      })

      # Mount the reset counter button
      var_tree.mount_button("Time Elapsed/Reset Counter", _reset_counter)

func _process(delta : float) -> void:
      # Update counter
      counter += delta

func _reset_counter() -> void:
      # Reset counter
      counter = 0.0

func _format_float(_input : float) -> String:
      # Return the float formatted as a string and rounded to the nearest hundredth
      return str(snappedf(_input, 0.01))

Next Update

• Individual variable update targetting.
• Button Options
  • Custom button textures
  • Built in callbacks
  • Editable items to collect inputs for button callbacks.