class_name AbstractProjectile
extends CharacterBody2D


signal destroyed


@export var damage : int
@export var speed : int
@export var direction : Vector2
@export var acceleration : int
@export var max_distance : int
@export var max_livetime : int


var _traveled_distance: float
var _livetime: float


func _ready() -> void:
	velocity = direction.normalized() * speed


func move(delta: float) -> void:
	position += velocity * delta


func process_acceleration(delta: float) -> void:
	var current_acceleration := acceleration * delta
	if current_acceleration > 0:
		velocity += velocity.normalized() * current_acceleration
	elif current_acceleration < 0:
		if velocity.length() > current_acceleration:
			velocity += velocity.normalized() * current_acceleration
		else:
			velocity = Vector2.ZERO


func process_distance(delta: float) -> void:
	_traveled_distance += velocity.length() * delta
	if max_distance > 0 and _traveled_distance > max_distance:
		destroyed.emit()


func process_livetime(delta: float) -> void:
	_livetime += delta
	if _livetime > max_livetime:
		destroyed.emit()