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https://github.com/Steffo99/nanogolf.git
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83 lines
2.4 KiB
GDScript
83 lines
2.4 KiB
GDScript
extends Node2D
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class_name PuttController
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## The maximum impulse that a putt can have.
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@export var putt_max_impulse: float
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## How many game units a pixel of screen mouse movement corresponds to.
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@export var putt_drag_scale: float
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## Length multiplier of the putt ghost
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@export var putt_ghost_scale: float
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## Curve mapping relative putt impulse to putt sound volume.
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@export var putt_volume: Curve
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## Emitted when a putt has happened.
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signal putt(putt_vector: Vector2)
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@onready var sprite: Sprite2D = $Sprite
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@onready var sound: AudioStreamPlayer2D = $Sound
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@onready var sprite_texture_width: float = sprite.texture.get_width()
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var is_putting: bool = false
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var putt_start_point: Vector2
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var can_putt: bool = false:
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get:
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return can_putt
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set(value):
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can_putt = value
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if not value:
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is_putting = false
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func _input(event: InputEvent):
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if can_putt:
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if event is InputEventMouseButton:
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if event.pressed:
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if not is_putting:
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start_putt(event.position)
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else:
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push_warning("Attempted to start putt while another was in progress.")
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else:
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if is_putting:
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end_putt(event.position)
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else:
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push_warning("Attempted to end putt while none was in progress.")
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if is_putting:
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update_putt_ghost(compute_putt(event.position, putt_start_point))
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if event is InputEventMouseMotion:
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if is_putting:
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update_putt_ghost(compute_putt(event.position, putt_start_point))
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func update_putt_ghost(putt_vector: Vector2):
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sprite.rotation = putt_vector.angle()
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sprite.scale.x = putt_vector.length() * putt_ghost_scale / sprite_texture_width
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sprite.position = position - putt_vector * putt_ghost_scale * 0.5
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func compute_putt(start_position: Vector2, end_position: Vector2) -> Vector2:
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var vector: Vector2 = -(end_position - start_position)
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vector *= putt_drag_scale
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if vector.length() > putt_max_impulse:
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vector = vector.normalized() * putt_max_impulse
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return vector
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func start_putt(start_position: Vector2):
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visible = true
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is_putting = true
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putt_start_point = start_position
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func end_putt(end_position: Vector2):
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visible = false
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is_putting = false
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can_putt = false
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var putt_vector = compute_putt(putt_start_point, end_position)
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putt.emit(putt_vector)
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play_putt_sound(putt_vector)
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func play_putt_sound(putt_vector: Vector2):
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var putt_impulse: float = putt_vector.length()
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sound.volume_db = putt_volume.sample(putt_impulse / putt_max_impulse)
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sound.play()
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