extends KinematicBody2D

class_name Slime

export var weight := 8
export var max_speed = 48 * 5 # ~3 tiles/sec at top speed
export var friction = 2000
export var speed = 80

var target_player = null
var navigation: Navigation2D = null
var nav_path: PoolVector2Array = []
var target_position = null
remotesync var velocity = Vector2.ZERO
remotesync var acceleration = Vector2.ZERO

enum {
	IDLE,
	WANDER,
	CHASE,
	ATTACK
}

var state = IDLE
onready var nav_line = $nav_line

func _ready():
	rset_config("position", MultiplayerAPI.RPC_MODE_SLAVE)

func _draw():
	pass

func _physics_process(delta):
	print("Slime nav %s %s %s" % [navigation, position, target_player.position])
	nav_path = navigation.get_simple_path(position, target_player.position)
	if not nav_path.empty() and (position - target_player.position).length() > (128 + 64):
		if (nav_path[0] - position).length() < 5: target_position = nav_path[1]
		else: target_position = nav_path[0]
	else: target_position = null
	nav_line.points = []
	for p in nav_path:
		nav_line.points.append(p - position)
	# print(position, path, target_position, target_player)
	match state:
		IDLE:
			if target_position != null:
				state = CHASE
			else:
				rset_unreliable("acceleration", Vector2.ZERO)
		WANDER:
			pass
		CHASE:
			if target_position == null:
				state = IDLE
			else:
				rset_unreliable("acceleration", (target_position - position).normalized() * speed)
		ATTACK:
			pass
	rset("velocity", move_and_slide((velocity + acceleration).clamped(max_speed),	Vector2.ZERO, false, 4, 0.785398, false).move_toward(Vector2.ZERO, friction * delta))
	if velocity.x < 1:
		$sprite.flip_h = true
	elif velocity.x > 1:
		$sprite.flip_h = false
			
	if is_network_master():
		rset_unreliable("position", position)

func seek_player():
	pass
	
func _on_hurtbox_die(_a, _b):
	print("slime die")
	rpc("die")

remotesync func die():
	queue_free()

func _on_hurtbox_hit():
	print("slime hit")