class_name WideSpray extends Spray
## Wide spray pattern

const SPRAYCAST_GROUP := "SprayCast"

@export var spray_scale := 1.0

@onready var spray_casts: Node3D = %SprayCasts
@onready var spray_effect: Node3D = %SprayEffect

@onready var beam_particles_1: GPUParticles3D = $BeamParticles1
@onready var beam_particles_2: GPUParticles3D = $BeamParticles2


func _fire() -> void:
	var prev_target: GunkBody = null
	var prev_point: Vector3
	var prev_normal: Vector3

	for laser: LaserCast in spray_casts.get_children():
		if laser.is_colliding():
			var collider := laser.get_collider()
			if collider is GunkBody:
				var target := collider as GunkBody
				var point := laser.get_collision_point()
				var normal := laser.get_collision_normal()

				# Always paint at least a dot, to cap the ends of the line
				target.paint_dot(point, normal, spray_scale)
				if target == prev_target:
					# Continue the multiline if possible
					target.add_to_multiline(prev_point, prev_normal, point, normal, spray_scale * 2)
					prev_point = point
					prev_normal = normal
				prev_target = target
				prev_point = point
				prev_normal = normal
			elif collider is GunkNode:
				(collider as GunkNode).hit()

	spray_effect.visible = true
	beam_particles_1.emitting = true
	beam_particles_2.emitting = true


func _idle() -> void:
	spray_effect.visible = false
	beam_particles_1.emitting = false
	beam_particles_2.emitting = false