extends SceneTree
## WEGWERF-Renderprobe (Karte t_eca890c5, K1b Startansicht = Karten-INHALT) — 3 Bilder 1600×900:
##   (a) Map geladen → fit_to_document: INHALT (Kisten+Spawns) im Bild, Kisten gut sichtbar
##   (b) MMT auf Objekt + 60 px ziehen → Objekt bleibt unterm Cursor, kein Sprung
##   (c) Pos1 → GANZE Karte wieder im Bild (Statuszeile „Pos1: ganze Karte ins Bild.“)
## Ausführen:
##   xvfb-run -a godot4 --path . --rendering-driver opengl3 -s res://tests/probe_k1b_render.gd
## Wegwerf-Probe (nicht im Repo-Commit — Datei-Grenzen der Karte), Beweise nach
## /opt/data/scopedvr/work/k1b_beweise/.

var main: Control
var camera: Camera3D
var subvp: SubViewport
var step := 0

func _initialize() -> void:
	_run.call_deferred()

func _png(name: String) -> String:
	return "/opt/data/scopedvr/work/k1b_beweise/" + name

func _shot(name: String) -> void:
	await process_frame
	await process_frame
	var img := subvp.get_texture().get_image()
	img.save_png(_png(name))
	print("PROBE_PNG=%s (%dx%d)" % [_png(name), img.get_width(), img.get_height()])

func _find_subvp(node: Node) -> SubViewport:
	if node is SubViewport:
		return node as SubViewport
	for c in node.get_children():
		var f := _find_subvp(c)
		if f != null:
			return f
	return null

func _mouse(btn: int, pressed: bool, pos: Vector2) -> void:
	var ev := InputEventMouseButton.new()
	ev.button_index = btn as MouseButton
	ev.pressed = pressed
	ev.position = pos
	ev.global_position = pos
	subvp.push_input(ev)

func _motion(pos: Vector2) -> void:
	var ev := InputEventMouseMotion.new()
	ev.position = pos
	ev.global_position = pos
	subvp.push_input(ev)

func _key(code: Key) -> void:
	var key := InputEventKey.new()
	key.keycode = code
	key.physical_keycode = code
	key.pressed = true
	subvp.push_input(key)

func _in_frustum(p: Vector3) -> bool:
	return camera.is_position_in_frustum(p)

func _run() -> void:
	var scene: PackedScene = load("res://scenes/main.tscn")
	main = scene.instantiate()
	root.add_child(main)
	await process_frame
	await process_frame
	camera = main.get("camera")
	subvp = _find_subvp(main)
	var container: SubViewportContainer = subvp.get_parent()
	container.stretch = false
	subvp.size = Vector2i(1600, 900)
	await process_frame

	# Gleiche Test-Szene wie die Suite: 2 Kisten + Default-Spawns (1024er Map).
	var doc: Dictionary = SvmapDocument.create_new("K1b-Probe", 1024.0, "mittag")
	doc["objects"] = [
		{"id": "box_001", "pos": [0.0, 0.0, 0.0], "scale": 1.0, "rot_y_deg": 0.0},
		{"id": "box_001", "pos": [450.0, 0.0, 450.0], "scale": 1.0, "rot_y_deg": 0.0},
	]
	main.set("doc", doc)
	main.call("_refresh_all")
	await process_frame
	await process_frame

	var builder = main.get("view_builder")
	var marker: Node3D = (builder.get("object_markers") as Array)[0]
	var center: Vector3 = marker.global_position + Vector3.UP * float(marker.get_meta("half_height", 0.0))
	print("ZAHLEN (a) target=", camera.get("target"), " distance=", camera.get("distance"))
	print("ZAHLEN (a) Objekt ", center, " → px ", camera.unproject_position(center))
	var ecken_sichtbar := 0
	var fehlende := 0
	for c in [Vector3(-512, -10, -512), Vector3(512, 80, -512), Vector3(-512, -10, 512), Vector3(512, 80, 512)]:
		if _in_frustum(c):
			ecken_sichtbar += 1
		else:
			fehlende += 1
	print("ZAHLEN (a) Map-Ecken im Frustum: %d/4 (fehlend=%d — STARTANSICHT ist INHALT, nicht ganze Map)" % [ecken_sichtbar, fehlende])
	print("ZAHLEN (a) Kisten im Frustum: (0,0,0)=", _in_frustum(Vector3(0, 0.6, 0)),
			" (450,0.6,450)=", _in_frustum(Vector3(450, 0.6, 450)))
	print("ZAHLEN (a) Status: ", main.status_label.text)
	await _shot("k1b_a_startansicht_inhalt.png")

	# --- (b) MMT auf Objekt + 60 px ziehen (K1-Prüfung bleibt intakt) --------
	var press: Vector2 = camera.unproject_position(center)
	print("ZAHLEN (b) Objekt bei ", center, " → px ", press)
	_motion(press)
	_mouse(MOUSE_BUTTON_MIDDLE, true, press)
	await process_frame
	var dist_vor: float = float(camera.get("distance"))
	_motion(press + Vector2(60, 0))
	await process_frame
	_motion(press + Vector2(60, 0))
	_mouse(MOUSE_BUTTON_MIDDLE, false, press + Vector2(60, 0))
	await process_frame
	var dist_nach: float = float(camera.get("distance"))
	print("ZAHLEN (b) Abstand Kamera↔Objekt vor/nach 60px-Drehen: ",
		camera.position.distance_to(center), " / ", camera.position.distance_to(center),
		" (Δ=", absf(dist_nach - dist_vor), ") Objekt im Bild=", _in_frustum(center))
	await _shot("k1b_b_drehen_objekt.png")

	# --- (c) Pos1: GANZE Karte wieder ----------------------------------------
	_key(KEY_HOME)
	await process_frame
	await process_frame
	var alle := true
	for c in [Vector3(-512, -10, -512), Vector3(512, 80, -512), Vector3(-512, -10, 512), Vector3(512, 80, 512)]:
		if not _in_frustum(c):
			alle = false
	print("ZAHLEN (c) nach Pos1: Map-Ecken im Frustum %s (8-Extrem-Punkte geprüft über 4 obere+4 … simpel: 4)", ["ALLE" if alle else "FEHLEND"])
	print("ZAHLEN (c) target=", camera.get("target"), " distance=", camera.get("distance"))
	print("ZAHLEN (c) Status: ", main.status_label.text)
	await _shot("k1b_c_pos1_ganze_karte.png")
	print("PROBE_FERTIG")
	quit(0)