extends Node2D
const ENEMY = preload("res://scenes/game/enemy_ship.tscn")
const SHOT = preload("res://scenes/game/weapon_projectile.tscn")
var ship: CharacterBody2D

func make_enemy(point: Vector2) -> CharacterBody2D:
	var enemy := ENEMY.instantiate() as CharacterBody2D
	enemy.position = point
	add_child(enemy)
	enemy.set_physics_process(false)
	enemy.set("_player", ship)
	return enemy

func _ready() -> void:
	GameState.start_new_run()
	ship = preload("res://scenes/game/player_ship.tscn").instantiate()
	add_child(ship)
	ship.set_physics_process(false)
	ship.get_node("WeaponController").set_physics_process(false)
	ship.get_node("ExtensionSystems").set_physics_process(false)
	var infected := make_enemy(Vector2(200, 0))
	var hostile := make_enemy(Vector2(400, 0))
	infected.set_virus_controlled(true)
	infected.hull = infected.max_hull
	infected.shields = infected.max_shields
	assert(hostile.select_combat_target() == ship)
	assert(infected.select_combat_target() == hostile)
	var xp_after_conversion := GameState.captain.experience
	await get_tree().physics_frame
	await get_tree().physics_frame
	# Actual physics ray used by the player laser detects the converted ship.
	var query := PhysicsRayQueryParameters2D.create(Vector2(100, 0), Vector2(250, 0), preload("res://scripts/game/weapon_controller.gd").RAY_COLLISION_MASK)
	var hit := get_world_2d().direct_space_state.intersect_ray(query)
	assert(hit.get("collider") == infected)
	# Real swept projectile collision: plasma, bullets and gamma all hit layer 64.
	for kind in [ItemDefinition.WeaponKind.PLASMA, ItemDefinition.WeaponKind.MACHINE_GUN, ItemDefinition.WeaponKind.GAMMA]:
		infected.hull = infected.max_hull
		infected.shields = infected.max_shields
		var shot := SHOT.instantiate()
		shot.configure(Vector2(100, 0), Vector2.RIGHT, kind, 1000.0, 5.0, 400.0)
		add_child(shot)
		shot.set_physics_process(false)
		var before: float = infected.hull + infected.shields
		shot._physics_process(0.15)
		assert(infected.hull + infected.shields < before)
	# Player rocket splash reaches infected ships; converted rockets cannot hurt player.
	infected.shields = infected.max_shields
	var rocket := SHOT.instantiate()
	rocket.configure(Vector2(220, 0), Vector2.RIGHT, ItemDefinition.WeaponKind.MISSILE, 100.0, 5.0, 400.0)
	add_child(rocket)
	rocket.set_physics_process(false)
	var before: float = infected.hull + infected.shields
	rocket._explode_at_target(hostile)
	assert(infected.hull + infected.shields < before)
	rocket.queue_free()
	# A missile already tracking this ship retains it after infection.
	var seeker := SHOT.instantiate()
	seeker.configure(Vector2(-500, 0), Vector2.RIGHT, ItemDefinition.WeaponKind.MISSILE, 10.0, 5.0, 1000.0, infected)
	add_child(seeker)
	seeker.set_physics_process(false)
	seeker._physics_process(0.01)
	assert(seeker.homing_target == infected)
	seeker.queue_free()
	# Destruction remains possible, with no second XP payout after conversion.
	infected.shields = 0.0
	infected.hull = 1.0
	var lethal := SHOT.instantiate()
	lethal.configure(Vector2(100, 0), Vector2.RIGHT, ItemDefinition.WeaponKind.MACHINE_GUN, 1000.0, 1000.0, 400.0)
	add_child(lethal)
	lethal.set_physics_process(false)
	lethal._physics_process(0.15)
	assert(infected.is_queued_for_deletion())
	assert(GameState.captain.experience == xp_after_conversion)
	print("VIRUS_PLAYER_DAMAGE_TEST: PASS target selection, laser ray, plasma/bullet/gamma collisions, rocket splash, retained seeker target, destruction and single XP payout")
	get_tree().quit()