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50 lines
1.4 KiB
GDScript
50 lines
1.4 KiB
GDScript
class_name CaptureFocus
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extends Container
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## Node that captures UI focus for joypad users.
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##
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## This script assists with capturing UI focus for joypad users when
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## opening, closing, or switching between menus.
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## When attached to a node, it will check if it was changed to visible
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## and a joypad is being used. If both are true, it will capture focus
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## on the first eligible node in its scene tree.
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## Hierarchical depth to search in the scene tree.
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@export var search_depth : int = 1
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@export var lock : bool = false :
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set(value):
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lock = value
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if not lock:
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update_focus()
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func _focus_first_search(control_node : Control, levels : int = 1):
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if control_node == null or !control_node.is_visible_in_tree():
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return false
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if control_node.focus_mode == FOCUS_ALL:
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control_node.grab_focus()
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return true
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if levels < 1:
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return false
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var children = control_node.get_children()
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for child in children:
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if _focus_first_search(child, levels - 1):
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return true
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func focus_first():
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_focus_first_search(self, search_depth)
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func update_focus():
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if lock : return
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if _is_visible_and_joypad():
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focus_first()
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func _is_visible_and_joypad():
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return is_visible_in_tree() and Input.get_connected_joypads().size() > 0
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func _on_visibility_changed():
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call_deferred("update_focus")
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func _ready():
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if is_inside_tree():
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update_focus()
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connect("visibility_changed", _on_visibility_changed)
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