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hella-farm/behaviours/move_physics.gd

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857 B
GDScript

extends Move
class_name MovePhysics
signal dragged(cursor: Cursor)
signal dropped
signal fallen
@export var acceleration = 1250.0
@export var drag_damp = 0.4
@export var drop_damp = 0.05
@export var drop_epsilon = 16.0
var cursor: Cursor = null
var falling: bool = false
var velocity := Vector2.ZERO
func drag(value: Cursor) -> void:
cursor = value
dragged.emit(value)
func drop() -> void:
cursor = null
falling = true
dropped.emit()
func fall() -> void:
velocity = Vector2.ZERO
falling = false
fallen.emit()
func _physics_process(delta: float) -> void:
if enabled:
if cursor:
var gap = cursor.global_position - global_position
velocity += gap * delta * acceleration
velocity *= 1.0 - drag_damp
else:
velocity *= 1.0 - drop_damp
if falling and velocity.length() < drop_epsilon:
fall()
move.emit(velocity * delta)