## GameLoop.gd
## Orchestrates the phase state machine and wires up the lane + UI for solo play.
extends Node

const PLAYER_ID = 0
const STARTING_MINERALS = 200
const STARTING_WORKERS = 3

@onready var race_select: Control = $RaceSelect
@onready var hud: CanvasLayer = $HUD
@onready var build_panel: PanelContainer = $BuildPanel
@onready var lane: Node2D = $Lane
@onready var security_system: Node2D = $SecuritySystem
@onready var game_over: Control = $GameOver

func _ready() -> void:
	hud.hide()
	build_panel.hide()
	race_select.race_selected.connect(_on_race_selected)
	EventBus.phase_changed.connect(_on_phase_changed)
	# Wire slot clicks to build panel
	EventBus.connect("slot_clicked_in_lane", _on_slot_clicked)
	EventBus.connect("next_wave_requested", _on_next_wave_requested)

func _on_race_selected(race: String) -> void:
	GameState.register_player(PLAYER_ID, race, lane)
	Economy.init_player(PLAYER_ID, STARTING_MINERALS, STARTING_WORKERS)
	race_select.hide()
	hud.show()
	GameState.set_phase(GameState.Phase.BUILD)

func _on_phase_changed(new_phase: GameState.Phase) -> void:
	pass  # HUD and other nodes react via their own connections

func _on_slot_clicked(player_id: int, slot: Node) -> void:
	if GameState.current_phase != GameState.Phase.BUILD:
		return
	if slot.is_empty():
		build_panel.open_for_slot(slot, player_id)
	elif slot.get_tower().can_upgrade():
		_try_upgrade(slot, player_id)

func _try_upgrade(slot: Node, player_id: int) -> void:
	var tower = slot.get_tower()
	var upgrade_id = tower.get_upgrade_id()
	var race = GameState.get_player_race(player_id)
	var defs = DataLoader.load_towers(race)
	for d in defs:
		if d.get("id") == upgrade_id:
			var cost = d.get("cost_minerals", 0) + d.get("cost_gas", 0)
			if Economy.spend_minerals(player_id, d.get("cost_minerals", 0)) and \
			   Economy.spend_gas(player_id, d.get("cost_gas", 0)):
				slot.upgrade_tower(d)
			return

func _on_next_wave_requested() -> void:
	if GameState.current_phase != GameState.Phase.BUILD:
		return
	var next = GameState.wave_number + 1
	if next > 31:
		return
	WaveManager.start_wave(next, lane)