extends Node2D
const PROJECTILE := preload("res://scenes/game/weapon_projectile.tscn")
const INTERCEPT := preload("res://scripts/game/shield_intersections.gd")
class StraightAlien extends "res://scripts/game/enemy_ship.gd":
	func _laser_aim_direction(direction: Vector2) -> Vector2: return direction
func shot(kind: int) -> Area2D:
	var projectile := PROJECTILE.instantiate() as Area2D
	projectile.enemy_shot = true
	projectile.missile_homing = false
	projectile.collision_mask = 2
	projectile.configure(Vector2(-150,0),Vector2.RIGHT,kind,1200,20,1000)
	add_child(projectile)
	projectile.set_physics_process(false)
	return projectile
func _ready() -> void:
	GameState.start_new_run()
	var player := preload("res://scenes/game/player_ship.tscn").instantiate()
	player.get_node("Camera2D").enabled = false
	add_child(player)
	player.set_physics_process(false)
	player.get_node("WeaponController").set_physics_process(false)
	player.position = Vector2.ZERO
	player.absorption = Vector3.ZERO
	await get_tree().physics_frame
	await get_tree().physics_frame
	for kind in [ItemDefinition.WeaponKind.PLASMA,ItemDefinition.WeaponKind.MISSILE,ItemDefinition.WeaponKind.GAMMA]:
		player.shields = 100
		var projectile := shot(kind)
		projectile._physics_process(0.25)
		assert(projectile.is_queued_for_deletion() and is_equal_approx(projectile.position.length(),50),"Fast projectile stops on shield perimeter")
		assert(player.shields==80)
		var radiation := player.get_node_or_null("RadiationStatus")
		if radiation != null: radiation.set_physics_process(false)
	player.shields = 100
	var glancing := INTERCEPT.intercept({},Vector2(-100,40),Vector2(100,40),2,[],get_tree())
	assert(glancing.collider==player and glancing.position.is_equal_approx(Vector2(-30,40)),"Shield catches glancing hits outside hull")
	var enemy := preload("res://scenes/game/enemy_ship.tscn").instantiate()
	enemy.set_script(StraightAlien)
	enemy.position = Vector2(-250,0)
	add_child(enemy)
	enemy.set_physics_process(false)
	enemy.weapon_kind = ItemDefinition.WeaponKind.LASER
	enemy.weapon_damage = 20
	enemy._player = player
	enemy._combat_target = player
	enemy._fire_plasma(Vector2.RIGHT)
	var found := false
	for child in get_children():
		if child is Line2D and child.get_point_count()==2:
			assert(child.get_point_position(1).is_equal_approx(Vector2(-50,0)),"Enemy laser ends at shield edge")
			found = true
	assert(found and player.shields==84)
	player.shields = 0
	player.hull = 100
	var bare := shot(ItemDefinition.WeaponKind.PLASMA)
	bare._physics_process(0.25)
	assert(is_equal_approx(bare.position.x,-18) and player.hull==80,"Bare hull uses original collision")
	player.shields = 100
	var cover := StaticBody2D.new()
	cover.position = Vector2(-80,0)
	cover.collision_layer = 1
	var shape := CollisionShape2D.new()
	var circle := CircleShape2D.new()
	circle.radius = 8
	shape.shape = circle
	cover.add_child(shape)
	add_child(cover)
	await get_tree().physics_frame
	await get_tree().physics_frame
	var blocked := shot(ItemDefinition.WeaponKind.PLASMA)
	blocked.collision_mask = 3
	blocked._physics_process(0.25)
	assert(blocked.position.x < -80 and player.shields==100,"Closer physical cover blocks shield interception")
	print("SHIELD_COLLISION_TEST: PASS (fast plasma/missiles/gamma, glancing shots, exact laser endpoint, bare hull, physical cover)")