class_name Ghost
extends Node3D

static var _models: Array[PackedScene] = [
	load("res://assets/ghost1.glb"),
	load("res://assets/ghost2.glb"),
	load("res://assets/ghost3.glb"),
]

var _rise_speed := 0.0
var _turn_speed := 0.0
var _fall_velocity := 0.0

var is_crushed := false


func _ready() -> void:
	add_child(_models.pick_random().instantiate())
	_rise_speed = randf_range(0.06, 0.1)
	_turn_speed = randf_range(0.06, 0.2) * [1, -1].pick_random()


func _physics_process(_delta: float) -> void:
	if not is_crushed:
		position.y += _rise_speed
		rotate_y(_turn_speed)
	else:
		_fall_velocity += -0.002
		position.y += _fall_velocity


func crush(final_position_x: float) -> void:
	is_crushed = true
	
	position.x = final_position_x
	rotation.y = 0
	scale.x = 0.2
	scale.y = 1.4
	reset_physics_interpolation()


func _on_screen_exited() -> void:
	queue_free()