Minor fixes

game/entities/weapons/projectiles/projectile_mover.gd

@@ -0,0 +1,55 @@
+extends Node
+
+
+signal velocity_updated(new_velocity: Vector2)
+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 velocity : Vector2:
+	set(value):
+		pass
+	get:
+		return _velocity
+
+var _velocity : Vector2:
+	set(value):
+		_velocity = value
+		velocity_updated.emit(_velocity)
+
+var _traveled_distance: float
+var _livetime: float
+
+
+func _ready() -> void:
+	_velocity = direction.normalized() * speed
+
+
+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()