extends SceneTree
## Prop-collision smoke: proves the guard and an NPC cannot walk through street
## furniture, and that a guest slides around a bench instead of passing through
## it. Windowed (the guard reads captured-mouse input):
##
##   godot --path . --script res://src/test/smoke_props.gd
##
## Exit code 0 = pass, 1 = failure.

const MAX_FRAMES := 1800
const GUARD_PUSH_FRAMES := 100

var frame := 0
var gm: Node = null
var started := false
var step := 0
var step_frame := 0
var failures: Array[String] = []
var bench: Node3D = null
var bench_center := Vector3.ZERO
var bench_body: StaticBody3D = null
var route_center := Vector3.ZERO
var guard_start := Vector3.ZERO
var npc: Node3D = null
var npc_start := Vector3.ZERO

func _initialize() -> void:
	root.size = Vector2i(1280, 720)
	root.add_child(load("res://scenes/main.tscn").instantiate())

func _process(_delta: float) -> bool:
	frame += 1
	if gm == null:
		gm = root.find_child("GameManager", true, false)
		return false
	if not started:
		gm.call("_on_venue_selected", "hollywood_building")
		Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
		started = true
		return false
	if frame > MAX_FRAMES:
		_fail("timeout before the collision checks finished")
		return true
	step_frame += 1
	match step:
		0:
			_find_bench()
			if bench == null:
				return false
			# Stand on the door side of the bench and walk into it (+z). The
			# street side is crowded with trees/planters now.
			var start := bench_center - Vector3(0, 0, 2.0)
			start.y = 0.1
			gm.guard.global_position = start
			gm.guard.rotation.y = PI
			guard_start = start
			Input.action_press("move_forward")
			step = 1
			step_frame = 0
		1:
			if step_frame >= GUARD_PUSH_FRAMES:
				Input.action_release("move_forward")
				_check(gm.guard.global_position.z - guard_start.z > 0.5,
					"guard walked toward the bench")
				_check(gm.guard.global_position.z < bench_center.z - 0.25,
					"guard stopped at the bench instead of passing through it")
				_check(not _inside_bench(gm.guard.global_position),
					"guard is not inside the bench collider")
				# Step the guard aside so the guest test hits the bench, not the player.
				gm.guard.global_position = bench_center + Vector3(4.0, -0.08, 2.2)
				_stage_npc()
				step = 2
				step_frame = 0
		2:
			if npc == null or not is_instance_valid(npc):
				_stage_npc()
				return false
			if _npc_finished():
				_check(npc.global_position.z > route_center.z + 0.35,
					"guest reached the far side of the stanchion")
				_check(npc.global_position.distance_to(route_center) > 0.4,
					"guest is not inside the stanchion collider")
				_check(npc_start.distance_to(npc.global_position) > 1.0,
					"guest moved while routing around the prop")
				_finish()
				return true
	return false

func _find_bench() -> void:
	var detail := gm.get_node_or_null("World/StreetDetail")
	if detail == null:
		# The world root name differs between scene builds; search instead.
		detail = root.find_child("StreetDetail", true, false)
	if detail == null:
		_fail("StreetDetail not found")
		return
	for child in detail.get_children():
		if str(child.name).begins_with("Prop_bench"):
			bench = child as Node3D
			break
	if bench == null:
		_fail("no bench prop placed")
		return
	bench_center = bench.global_position
	bench_body = bench.get_node_or_null("Collision") as StaticBody3D
	if bench_body == null:
		_fail("bench has no static collider")

func _stage_npc() -> void:
	if gm.npcs.is_empty():
		step = 0
		step_frame = 0
		return
	var detail := root.find_child("StreetDetail", true, false)
	route_center = bench_center
	if detail != null:
		for child in detail.get_children():
			if str(child.name).begins_with("Prop_stanchion"):
				route_center = (child as Node3D).global_position
				break
	npc = gm.npcs[0]
	npc_start = route_center + Vector3(0, 0.5, -2.0)
	npc.global_position = npc_start
	npc.velocity = Vector3.ZERO
	npc.arrived = false
	npc.awaiting_interaction = false
	npc.lifetime_s = 999.0
	npc.reaction_mode = ""
	if npc.npc != null:
		# "enter" would send the guest to the door once the path ends; keep this
		# test focused on routing around the prop.
		npc.npc.intent = "roam"
	# A stanchion sits in open sidewalk, so the route is not squeezed by trees
	# or bins; the target forces a straight line through it.
	npc.target_position = Vector3(route_center.x, 0.5, route_center.z + 5.5)

func _npc_finished() -> bool:
	if npc == null or not is_instance_valid(npc):
		return false
	return npc.global_position.z > route_center.z + 0.35 \
		or npc.global_position.distance_to(npc.target_position) < 0.9

func _inside_bench(point: Vector3) -> bool:
	if bench_body == null:
		return false
	var collider := bench_body.get_node_or_null("Shape") as CollisionShape3D
	if collider == null or not (collider.shape is BoxShape3D):
		return false
	var box := collider.shape as BoxShape3D
	var half := box.size * 0.5
	var center := collider.global_position
	half.x += 0.1
	half.z += 0.1
	return absf(point.x - center.x) < half.x and absf(point.z - center.z) < half.z

func _check(condition: bool, message: String) -> void:
	if condition:
		print("ok: " + message)
	else:
		_fail(message)

func _fail(message: String) -> void:
	failures.append(message)
	_finish()

func _finish() -> void:
	Input.action_release("move_forward")
	if failures.is_empty():
		print("SMOKE OK: props block the guard and guests route around them")
		quit(0)
	else:
		for message in failures:
			printerr("SMOKE FAIL: " + message)
		quit(1)