extends MeshInstance3D

@export var f := 1.0
@export var z := 0.5
@export var r := 2.0
@export var target_path: NodePath
@export var f_label_path: NodePath
@export var z_label_path: NodePath
@export var r_label_path: NodePath

@onready var second_order_dynamics := SecondOrderDynamics.new(f, z, r, global_position)
@onready var target_node: Node3D = get_node(target_path)
@onready var f_label_node: Label = get_node(f_label_path)
@onready var z_label_node: Label = get_node(z_label_path)
@onready var r_label_node: Label = get_node(r_label_path)

func _ready():
	process_mode = Node.PROCESS_MODE_ALWAYS

func _input(event):
	if event.is_action_pressed("inc_f"):
		f += 0.1
		second_order_dynamics = SecondOrderDynamics.new(f, z, r, global_position)
		
	if event.is_action_pressed("dec_f"):
		f -= 0.1
		second_order_dynamics = SecondOrderDynamics.new(f, z, r, global_position)
		
	if event.is_action_pressed("inc_z"):
		z += 0.1
		second_order_dynamics = SecondOrderDynamics.new(f, z, r, global_position)
		
	if event.is_action_pressed("dec_z"):
		z -= 0.1
		second_order_dynamics = SecondOrderDynamics.new(f, z, r, global_position)
	
	if event.is_action_pressed("inc_r"):
		r += 0.1
		second_order_dynamics = SecondOrderDynamics.new(f, z, r, global_position)
		
	if event.is_action_pressed("dec_r"):
		r -= 0.1
		second_order_dynamics = SecondOrderDynamics.new(f, z, r, global_position)

func _process(delta):
	global_position = second_order_dynamics.update(delta, target_node.global_position)
	
	if f_label_node:
		f_label_node.text = "f = %.3f" % [f]
		
	if z_label_node:
		z_label_node.text = "z = %.3f" % [z]
		
	if r_label_node:
		r_label_node.text = "r = %.3f" % [r]