Added footsteps, new tree, various other tweaks

addons/proton_scatter/src/scatter_shape.gd

@@ -0,0 +1,64 @@
+@tool
+extends Node3D
+
+
+const ScatterUtil := preload('./common/scatter_util.gd')
+
+
+@export_category("ScatterShape")
+@export var negative = false:
+	set(val):
+		negative = val
+		update_gizmos()
+		ScatterUtil.request_parent_to_rebuild(self)
+
+@export var shape: ProtonScatterBaseShape:
+	set(val):
+		# Disconnect the previous shape if any
+		if shape and shape.changed.is_connected(_on_shape_changed):
+			shape.changed.disconnect(_on_shape_changed)
+
+		shape = val
+		if shape:
+			shape.changed.connect(_on_shape_changed)
+
+		update_gizmos()
+		ScatterUtil.request_parent_to_rebuild(self)
+
+var _ignore_transform_notification = false
+
+
+func _ready() -> void:
+	set_notify_transform(true)
+
+
+func _notification(what):
+	match what:
+		NOTIFICATION_TRANSFORM_CHANGED:
+			if _ignore_transform_notification:
+				_ignore_transform_notification = false
+				return
+			ScatterUtil.request_parent_to_rebuild(self)
+
+		NOTIFICATION_ENTER_WORLD:
+			_ignore_transform_notification = true
+
+
+func _set(property, _value):
+	if not Engine.is_editor_hint():
+		return false
+
+	# Workaround to detect when the node was duplicated from the editor.
+	if property == "transform":
+		_on_node_duplicated.call_deferred()
+
+	return false
+
+
+func _on_shape_changed() -> void:
+	update_gizmos()
+	ScatterUtil.request_parent_to_rebuild(self)
+
+
+func _on_node_duplicated() -> void:
+	shape = shape.get_copy() # Enfore uniqueness on duplicate, could be an option