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path: root/scripts/wyvern.gd
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extends "res://scripts/base_defender.gd"

var game_stats_config = preload("res://resources/game_stats_config.tres")
var projectile: PackedScene = preload("res://scenes/wyvern_projectile.tscn")
var damage_tick_rate: float
var range_collision : CollisionShape2D
var firing : bool = false

func _ready():
	damage = game_stats_config.wyvern_damage
	fire_rate = game_stats_config.wyvern_fire_rate
	damage_tick_rate = game_stats_config.wyvern_damage_tick_rate
	defender_range = game_stats_config.wyvern_defender_range
	range_collision = $Tower/CollisionShape2D
	range_collision.shape.radius = defender_range

func _process(_delta):
	select_target()
	if firing:
		if target == null:
			$WyvernProjectile.queue_free()
			firing = false
		else:
			$WyvernProjectile.target = target
			$WyvernProjectile.move_projectile()

func _on_tower_body_entered(_body: Node2D) -> void:
	var old_target : CharacterBody2D = target
	select_target()
	if old_target == null && old_target != target:
		$FireTimer.start(fire_rate)

func _on_fire_timer_timeout():
	if (target != null):
		var tmp_projectile = projectile.instantiate()
		tmp_projectile.target = target
		tmp_projectile.projectile_damage = damage
		tmp_projectile.damage_tick_rate = 0.25
		add_child(tmp_projectile)
		tmp_projectile.global_position = $Aim.global_position
		firing = true
	$FireTimer.stop()