mirror of
https://github.com/Steffo99/swear-jar.git
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114 lines
3.8 KiB
GDScript
114 lines
3.8 KiB
GDScript
extends Node
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class_name PreciseTouchPlacer
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## The degrees to rotate by when rotation is quantized.
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@export_range(1, 180, 1) var rotation_quantized_degrees: float = 45
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## The degrees to rotate by when rotation is quantized and precise rotation is being requested.
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@export_range(1, 180, 1) var rotation_quantized_precise_degrees: float = 5
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## The [Node2D] this script should act on.
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@onready var target: Node2D = get_parent()
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## Whether the target is currently being dragged or not.
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var is_dragging: bool = false
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## The last [InputEventMouse] received.
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var last_mouse_event: InputEventMouse = null
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## The last [InputEventScreenTouch] or [InputEventScreenDrag] received for each possible touch index.
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var last_touch_events: Array[InputEvent] = [
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null, null, null, null, null,
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null, null, null, null, null,
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]
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signal moved(from: Vector2, to: Vector2)
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signal rotated_radians(from: float, to: float)
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## Count the number of non-[null] [last_touch_events].
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func count_active_touch_events() -> int:
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var total = 0
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for event in last_touch_events:
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if event != null:
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total += 1
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return total
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## Handle event-based input
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func _input(event: InputEvent):
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# Count active events
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var count = count_active_touch_events()
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# Mouse drag
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if count == 0:
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# Mouse drag
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if event is InputEventMouseMotion and last_mouse_event:
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var from = target.position
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target.position += event.relative
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var to = target.position
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moved.emit(from, to)
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# Touch drag
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elif count == 1:
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# Touch drag
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if event is InputEventScreenDrag:
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var from = target.position
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target.position += event.relative
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var to = target.position
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moved.emit(from, to)
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# Handle rotation
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elif count == 2:
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# Find the previous event
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var previous
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if event is InputEventScreenTouch or event is InputEventScreenDrag:
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previous = last_touch_events[event.index]
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# At this point previous shouldn't be null
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# If it is, just try again at the next frame
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if previous == null:
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return
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# Find the other event
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var other
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for last_touch_index in len(last_touch_events):
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if event is InputEventScreenTouch or event is InputEventScreenDrag:
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if event.index == last_touch_index:
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continue
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if last_touch_events[last_touch_index] != null:
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other = last_touch_events[last_touch_index]
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# At this point other shouldn't be null
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# If it is, just try again at the next frame
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if other == null:
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return
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# Find the two vectors between the touches, one using the previous position, and one using the current one
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var previous_vec: Vector2 = previous.position - other.position
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var current_vec: Vector2 = event.position - other.position
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# Find the angle between the two vectors
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var rotation_radians = previous_vec.angle_to(current_vec)
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# Apply the rotation
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var from = target.rotation
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target.rotation += rotation_radians
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var to = target.rotation
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rotated_radians.emit(from, to)
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# Store last events
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if event is InputEventMouseButton:
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last_mouse_event = event if event.pressed else null
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elif event is InputEventMouseMotion and last_mouse_event != null:
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last_mouse_event = event
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elif event is InputEventScreenTouch:
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last_touch_events[event.index] = event if event.pressed else null
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elif event is InputEventScreenDrag:
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last_touch_events[event.index] = event
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## Get the degrees that the target should be rotated by in a given frame when rotation is quantized.
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func get_rotation_quantized_degrees() -> float:
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var degrees = rotation_quantized_precise_degrees if Input.is_action_pressed("ghost_precise") else rotation_quantized_degrees
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var intensity = 1.0 if Input.is_action_just_pressed("ghost_clockwise") else 0.0 - 1.0 if Input.is_action_just_pressed("ghost_counterclockwise") else 0.0
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return degrees * intensity
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## Handle polling-based input
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func _physics_process(_delta):
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# Handle quantized rotation
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target.rotation_degrees += get_rotation_quantized_degrees()
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