extends Node2D

# Allow instancing of projectiles.
export(PackedScene) var projectile

# Allow access to parent node path.
export(NodePath) var parent_path

# Cooldown value & count.
var cooldown_value : int
var cooldown_count : int

# Gun status.
var is_gun_ready : bool

# Ready.
func _ready():
    # Hide animation.
    $GunfireAnimation.hide()

    # Set cooldown values.
    cooldown_value = 32
    cooldown_count = 0

    # Set gun status.
    is_gun_ready = true

# Process.
func _process(delta):
    # Increment cooldown.
    if not is_gun_ready:
        cooldown_count += 1

    # Check cooldown & reset.
    cooldown_count %= cooldown_value
    if cooldown_count == 0:
        is_gun_ready = true

# Fire the projectile.
# Default speed set to 500.
func fire(projectile_speed = 500):
    # Check & reset gun status.
    if not is_gun_ready:
        return
    is_gun_ready = false

    # Create projectile instance.
    var projectile_instance = projectile.instance()

    # Set spawn position to gun barrel.
    projectile_instance.position = $BarrelEnd.position

    # Set the direction of the projectile.
    projectile_instance.rotation = get_node(parent_path).rotation - (PI / 2)

    # Set the velocity of the projectile.
    projectile_instance.linear_velocity = Vector2(projectile_speed, 0.0).rotated(projectile_instance.rotation)

    # Play animation.
    $GunfireAnimation.show()
    $GunfireAnimation.play()

    # Spawn the projectile.
    add_child(projectile_instance)


func _on_GunfireAnimation_animation_finished():
    $GunfireAnimation.stop()
    $GunfireAnimation.hide()