projectile.gd

extends Node2D
class_name Projectile

var velocity = Vector2()
var exploded = false
var is_local = true

onready var explosion_range = $explosion_range
onready var radius = $gravity_range/shape.shape.radius

var attractors_in_range = []

func _physics_process(delta):
	#apply_attractor(get_global_mouse_position(), 10, delta)
	for attractor in attractors_in_range:
		apply_attractor(attractor.position, attractor.scale.x, delta)
		
	$vel_line.points[1] = velocity
	position += velocity * delta
	
func apply_attractor(pos: Vector2, strength: float, delta):
	var dir : Vector2 = pos - position
	var length = dir.length()
	dir = dir.normalized()
	dir *= clamp(radius - length, 0, radius) * strength * 0.75
	velocity += dir * delta


func _on_range_body_entered(body):
	attractors_in_range.append(body)

func _on_range_body_exited(body):
	attractors_in_range.erase(body)

func _on_collision_range_body_entered(body):
	if not is_local: return
	#call_deferred("explode")
	exploded = true
	
func explode():
	for body in explosion_range.get_overlapping_bodies():
		body.explode(position)
	show_damage()
	var parent = get_parent()
	if parent: parent.remove_child(self)
	#exploded = true
	
func show_damage():    
	var explosion = explosion_range.get_node("explosion")
	if explosion:
		var origin = explosion.global_transform.origin
		explosion.get_parent().remove_child(explosion)
		get_tree().get_root().add_child(explosion)
		explosion.visible = true
		explosion.global_transform.origin = origin
		explosion.get_node("sfx").play()
		var sprite = explosion.get_node("sprite")
		sprite.play(sprite.animation)
		yield(get_tree().create_timer(1.0), "timeout")
		explosion.get_parent().remove_child(explosion)