125 lines
4.6 KiB
GDScript
125 lines
4.6 KiB
GDScript
class_name SpeedFader
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extends Control
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# Vertical drag control for GameState.fleet_speed_multiplier. Same raw-touch
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# idiom as TouchJoystick (handle_touch/handle_drag offered first by
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# GameController, not _gui_input) and the same NeonDraw look, but a fader
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# rather than a stick: the knob's Y position along a fixed vertical track IS
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# the value, no spring-back to centre.
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#
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# Self-contained: writes straight to GameState.fleet_speed_multiplier rather
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# than reporting a value for something else to apply, since the multiplier
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# already lives in the one place (the autoload) that needs to survive scene
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# swaps.
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@export var glow_color: Color = Color(0.7, 0.3, 1.0)
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@export var core_color: Color = Color(1.0, 1.0, 1.0)
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@export var track_margin: float = 28.0
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@onready var fleet: Node2D = get_node("../../Fleet")
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@onready var label: Label = get_node("Label")
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var active_touch_index: int = -1
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# 0 = bottom of the track (1.0x), 1 = top (GameState.MAX_FLEET_SPEED_MULTIPLIER).
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var knob_t: float = 0.0
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var status_message_until: int = 0
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func _ready() -> void:
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visible = false
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queue_redraw()
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func _process(_delta: float) -> void:
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var has_distorder: bool = fleet.has_capability("distorder")
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if has_distorder != visible:
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visible = has_distorder
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if not has_distorder:
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# Fleet owns persistent composition state. This outgoing UI node can
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# briefly observe an empty fleet during a scene swap, so it must only
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# clear its own interaction state here.
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active_touch_index = -1
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knob_t = 0.0
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return
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knob_t = (GameState.fleet_speed_multiplier - 1.0) \
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/ maxf(GameState.MAX_FLEET_SPEED_MULTIPLIER - 1.0, 0.001)
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# #62: GameState._process() (not this node's own _process()) is what
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# drains energy and force-resets the multiplier, since it has to keep
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# running across the space<->surface swap and while this control might
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# not even be in the current scene tree. It leaves a one-shot flag for
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# whichever SpeedFader picks it up next.
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if GameState.boost_depleted_notice:
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GameState.boost_depleted_notice = false
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# Still holding the drag at the moment energy ran out would
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# otherwise re-boost on the very next drag event, from a knob
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# position the finger never actually moved away from.
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active_touch_index = -1
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label.text = "Out of energy!"
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status_message_until = Time.get_ticks_msec() + 3000
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elif Time.get_ticks_msec() >= status_message_until:
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label.text = "x%.1f" % GameState.fleet_speed_multiplier
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queue_redraw()
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func is_active() -> bool:
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return active_touch_index != -1
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func _blocked_by_modal() -> bool:
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# Same check as IconButton._blocked_by_modal() - panels stay transparent
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# to raw input (the skill tree/formation editor need _unhandled_input),
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# so every raw-touch control checks for itself instead.
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for menu in get_tree().get_nodes_in_group("modal_menus"):
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if menu.is_visible_in_tree() and not menu.is_ancestor_of(self):
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return true
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return false
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func handle_touch(event: InputEventScreenTouch) -> bool:
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var local: Vector2 = event.position - global_position
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if event.pressed:
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if not visible or active_touch_index != -1 or _blocked_by_modal():
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return false
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if not Rect2(Vector2.ZERO, size).has_point(local):
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return false
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active_touch_index = event.index
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_update_from_local(local)
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return true
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if event.index != active_touch_index:
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return false
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active_touch_index = -1
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queue_redraw()
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return true
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func handle_drag(event: InputEventScreenDrag) -> bool:
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if event.index != active_touch_index:
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return false
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_update_from_local(event.position - global_position)
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return true
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func _update_from_local(local: Vector2) -> void:
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var usable: float = maxf(size.y - track_margin * 2.0, 1.0)
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# Up is 1.0 (top of the track), matching how a real fader/throttle reads.
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var t: float = 1.0 - clampf((local.y - track_margin) / usable, 0.0, 1.0)
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knob_t = t
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GameState.set_fleet_speed_multiplier(1.0 + t * (GameState.MAX_FLEET_SPEED_MULTIPLIER - 1.0))
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label.text = "x%.1f" % GameState.fleet_speed_multiplier
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queue_redraw()
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func _draw() -> void:
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var top: Vector2 = Vector2(size.x * 0.5, track_margin)
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var bottom: Vector2 = Vector2(size.x * 0.5, size.y - track_margin)
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NeonDraw.draw_glowing_line(self, bottom, top, glow_color, 0.55, 0.5, core_color)
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# Tick marks at the extremes read as "min" and "max" at a glance.
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for t in [0.0, 1.0]:
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var y: float = lerpf(bottom.y, top.y, t)
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NeonDraw.draw_glowing_line(self, Vector2(size.x * 0.5 - 12.0, y),
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Vector2(size.x * 0.5 + 12.0, y), glow_color, 0.4, 0.35, core_color)
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var knob_pos: Vector2 = bottom.lerp(top, clampf(knob_t, 0.0, 1.0))
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NeonDraw.draw_glowing_circle(self, knob_pos, 16.0, glow_color,
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1.0 if is_active() else 0.8, core_color)
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