extends Node3D
# Стартовая комната: ничего тяжёлого, только пол, стены и порталы на карты. Сами карты качаются
# отдельными пакетами при входе в портал (World/map_loader.gd) — поэтому игра стартует быстро.
# Чтобы добавить карту — допиши запись в PORTALS: порталы встанут в ряд по центру (влезает 6).

const PORTALS := [
	{"title": "SANDBOX", "map": "world", "scene": "res://maps/sandbox/sandbox.tscn", "pack": "world.pck", "color": Color(0.2, 0.9, 1.0)},
	{"title": "BACKROOMS", "map": "backrooms", "scene": "res://maps/backrooms/backrooms.tscn", "pack": "backrooms.pck", "color": Color(1.0, 0.85, 0.25)},
	{"title": "PARKOUR", "map": "parkour", "scene": "res://maps/parkour/parkour.tscn", "pack": "parkour.pck", "color": Color(1.0, 0.2, 0.65)},
]

const ROOM_WIDTH := 28.0
const ROOM_DEPTH := 18.0
const ROOM_HEIGHT := 6.0
const WALL := 0.5
const PORTAL_SPACING := 4.5

const GRID_SHADER := """
shader_type spatial;
varying vec3 wpos;
void vertex() { wpos = (MODEL_MATRIX * vec4(VERTEX, 1.0)).xyz; }
void fragment() {
	vec2 cell = wpos.xz / 2.0;
	vec2 g = abs(fract(cell - 0.5) - 0.5) / fwidth(cell);
	float line = 1.0 - min(min(g.x, g.y), 1.0);
	ALBEDO = mix(vec3(0.03, 0.04, 0.06), vec3(0.1, 0.65, 0.85), line * 0.8);
	EMISSION = vec3(0.04, 0.3, 0.4) * line;
	ROUGHNESS = 0.9;
}
"""

func _ready() -> void:
	Net.enter_map("hub")
	_build_room()
	_build_portals()
	_build_environment()

func _build_room() -> void:
	var body := StaticBody3D.new()
	body.name = "Room"
	add_child(body)

	var floor_mat := ShaderMaterial.new()
	floor_mat.shader = Shader.new()
	floor_mat.shader.code = GRID_SHADER
	var wall_mat := StandardMaterial3D.new()
	wall_mat.albedo_color = Color(0.09, 0.1, 0.14)
	wall_mat.roughness = 1.0
	var ceiling_mat := StandardMaterial3D.new()
	ceiling_mat.albedo_color = Color(0.05, 0.055, 0.08)

	var hw := ROOM_WIDTH * 0.5
	var hd := ROOM_DEPTH * 0.5
	_add_box(body, Vector3(ROOM_WIDTH + WALL * 2, 0.5, ROOM_DEPTH + WALL * 2), Vector3(0, -0.25, 0), floor_mat)
	_add_box(body, Vector3(ROOM_WIDTH + WALL * 2, 0.5, ROOM_DEPTH + WALL * 2), Vector3(0, ROOM_HEIGHT + 0.25, 0), ceiling_mat)
	_add_box(body, Vector3(ROOM_WIDTH + WALL * 2, ROOM_HEIGHT, WALL), Vector3(0, ROOM_HEIGHT * 0.5, -hd - WALL * 0.5), wall_mat)
	_add_box(body, Vector3(ROOM_WIDTH + WALL * 2, ROOM_HEIGHT, WALL), Vector3(0, ROOM_HEIGHT * 0.5, hd + WALL * 0.5), wall_mat)
	_add_box(body, Vector3(WALL, ROOM_HEIGHT, ROOM_DEPTH), Vector3(-hw - WALL * 0.5, ROOM_HEIGHT * 0.5, 0), wall_mat)
	_add_box(body, Vector3(WALL, ROOM_HEIGHT, ROOM_DEPTH), Vector3(hw + WALL * 0.5, ROOM_HEIGHT * 0.5, 0), wall_mat)

func _add_box(body: StaticBody3D, size: Vector3, pos: Vector3, mat: Material) -> void:
	var shape := BoxShape3D.new()
	shape.size = size
	var cs := CollisionShape3D.new()
	cs.shape = shape
	cs.position = pos
	body.add_child(cs)

	var mesh := BoxMesh.new()
	mesh.size = size
	mesh.material = mat
	var mi := MeshInstance3D.new()
	mi.mesh = mesh
	mi.position = pos
	mi.cast_shadow = GeometryInstance3D.SHADOW_CASTING_SETTING_OFF
	add_child(mi)

# Порталы вдоль северной стены лицом в комнату, по центру
func _build_portals() -> void:
	var portal_script := load("res://objects/portal.gd")
	var z := -ROOM_DEPTH * 0.5 + 1.0
	for i in PORTALS.size():
		var info: Dictionary = PORTALS[i]
		var portal := Area3D.new()
		portal.set_script(portal_script)
		portal.target_map = info.map
		portal.target_scene = info.scene
		portal.pack_name = info.pack
		portal.title = info.title
		portal.color = info.color
		portal.position = Vector3((i - (PORTALS.size() - 1) * 0.5) * PORTAL_SPACING, 0.0, z)
		add_child(portal)

	var label := Label3D.new()
	label.text = "CHOOSE A MAP"
	label.pixel_size = 0.012
	label.font_size = 64
	label.outline_size = 12
	label.modulate = Color(0.7, 0.9, 1.0)
	label.position = Vector3(0, ROOM_HEIGHT - 0.35, -ROOM_DEPTH * 0.5 + 0.1)
	add_child(label)

func _build_environment() -> void:
	var env := Environment.new()
	env.background_mode = Environment.BG_COLOR
	env.background_color = Color(0.02, 0.025, 0.04)
	env.ambient_light_source = Environment.AMBIENT_SOURCE_COLOR
	env.ambient_light_color = Color(0.5, 0.58, 0.75)
	env.ambient_light_energy = 0.55
	var we := WorldEnvironment.new()
	we.environment = env
	add_child(we)

	var lamp := OmniLight3D.new()
	lamp.position = Vector3(0, ROOM_HEIGHT - 0.6, 2.0)
	lamp.omni_range = 22.0
	lamp.light_energy = 0.8
	lamp.light_color = Color(0.8, 0.9, 1.0)
	lamp.shadow_enabled = false
	add_child(lamp)