extends CharacterBody2D

@export var gravity = 900.0

var movement_fsm: StateMachine
@onready var animation_player: AnimationPlayer = $AnimationPlayer

var FSMSetup = preload("res://player/setup_state.gd")
var movement_states: Array[State] = []
var movement_transitions: Array[StateTransition] = []
var movement_init_state: StringName = &"idle"

func _ready() -> void:
	movement_states = FSMSetup.build_states()
	movement_transitions = FSMSetup.build_transitions()

	movement_fsm = StateMachine.new()
	movement_fsm.setup(movement_states, movement_transitions, movement_init_state)
	if movement_fsm.current_state:
		movement_fsm.current_state.enter(self)


func _physics_process(delta: float) -> void:
	if(movement_fsm):
		movement_fsm.process(self, delta)
	print("Current state: %s" % movement_fsm.current_state.id)

func play_animation(anim_name: String) -> void:
	if animation_player == null:
		push_warning("State '%s': player_anims is null, cannot play '%s'" % [movement_fsm.current_state.id, anim_name])
		return
	# TODO:
	# null checks: no sprite frames
	# no animation by name

	if animation_player.current_animation != anim_name:
		animation_player.play(anim_name)