99 lines
2.7 KiB
GDScript
99 lines
2.7 KiB
GDScript
class_name ControllerFocusPresentation
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extends Node
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const CONTROLLER_MOTION_THRESHOLD: float = 0.35
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const INVERSION_DISABLED_META: StringName = &"controller_focus_inversion_disabled"
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var _controller_active: bool = false
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var _focused_item: CanvasItem
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var _original_material: Material
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var _inversion_material: ShaderMaterial
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func _ready() -> void:
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var inversion_shader := Shader.new()
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inversion_shader.code = """
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shader_type canvas_item;
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render_mode unshaded;
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void fragment() {
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vec4 source = texture(TEXTURE, UV) * COLOR;
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COLOR = vec4(vec3(1.0) - source.rgb, source.a);
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}
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"""
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_inversion_material = ShaderMaterial.new()
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_inversion_material.shader = inversion_shader
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get_viewport().gui_focus_changed.connect(_on_focus_changed)
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set_process_input(true)
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set_process(true)
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func _exit_tree() -> void:
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_restore_focused_item()
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func _input(event: InputEvent) -> void:
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if event is InputEventJoypadButton:
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if (event as InputEventJoypadButton).pressed:
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_set_controller_active(true)
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elif event is InputEventJoypadMotion:
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if absf((event as InputEventJoypadMotion).axis_value) >= (
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CONTROLLER_MOTION_THRESHOLD
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):
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_set_controller_active(true)
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elif event is InputEventMouseMotion:
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_set_controller_active(false)
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elif event is InputEventMouseButton:
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if (event as InputEventMouseButton).pressed:
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_set_controller_active(false)
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elif event is InputEventKey:
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if (event as InputEventKey).pressed:
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_set_controller_active(false)
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func _process(_delta: float) -> void:
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if not is_instance_valid(_focused_item):
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_focused_item = null
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_original_material = null
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return
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var focus_owner: Control = get_viewport().gui_get_focus_owner()
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if (
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focus_owner != _focused_item
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or not focus_owner.is_visible_in_tree()
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or focus_owner.focus_mode == Control.FOCUS_NONE
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or bool(focus_owner.get_meta(INVERSION_DISABLED_META, false))
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):
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_apply_to_focus(focus_owner)
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func _set_controller_active(active: bool) -> void:
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if _controller_active == active:
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return
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_controller_active = active
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_apply_to_focus(get_viewport().gui_get_focus_owner())
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func _on_focus_changed(control: Control) -> void:
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_apply_to_focus(control)
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func _apply_to_focus(control: Control) -> void:
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_restore_focused_item()
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if (
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not _controller_active
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or control == null
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or not control.is_visible_in_tree()
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or control.focus_mode == Control.FOCUS_NONE
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or bool(control.get_meta(INVERSION_DISABLED_META, false))
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):
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return
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_focused_item = control
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_original_material = _focused_item.material
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_focused_item.material = _inversion_material
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func _restore_focused_item() -> void:
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if is_instance_valid(_focused_item):
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_focused_item.material = _original_material
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_focused_item = null
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_original_material = null
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