class_name State
extends Resource

export var debug_state: bool = false
export var timeout_seconds: float = 0.0

signal state_entered()
signal state_exited()

# Declare member variables here. Examples:

var state_timeout: Timer
var state_ready: bool = true

export var name: String

# Called when the node enters the scene tree for the first time.
# Resources don't have _ready callbacks I think
# You'd have to use the constructor callback _init
#func _ready():
#	pass # Replace with function body.

#func _init():
#	print ("Am I really a parent's constructor?")

# needed because _ready isn't called and state variables aren't
# populated yet. Don't want to use init or ready because they're
# too close to _init and _ready so we're going with setup
func setup():
	# Only add timout node if timer value was specified.
	if(timeout_seconds > 0.0):
		state_timeout = Timer.new()
		state_timeout.wait_time = timeout_seconds
		state_timeout.one_shot = true
		state_timeout.autostart = false
		#add_child(state_timeout)
		#get_tree().get_root().add_child(state_timeout)
		#TODO: Need to figure out how to add this to tree
	#modifier = StateModifier.new()

#Hopefully this passes by reference.
func copy(state: State) -> void:
	state.name = name
	return

func enter() -> void:
	if debug_state:
		print("Got call to enter state ", name)
	if state_timeout != null:
		if debug_state:
			print(name, "-Starting Timer")
		state_timeout.start()
	emit_signal("state_entered")
	return

func exit() -> void:
	emit_signal("state_exited")
	return

# Disable to test whether actually needed.
#func process_input(_event: InputEvent) -> String:
#	return ''
#
#func process_frame(_delta: float) -> String:
#	return ''
#
#func process_physics(_delta: float) -> String:
#	return ''