extends Node

# The main scene manages the displayed screens
const BattleScreen = preload("res://screens/battle_screen.tscn")

# Variables
# The stack of screens. All are displayed one above the others.
var screens: Array = []
var current_screen: String

# Called when the node enters the scene tree for the first time.
func _ready():
    go_to_battle_screen()

# Function to change screen
func on_next_screen(screen: String):
    match screen:
        'battle':
            go_to_battle_screen()
# Function to leave current screen
func on_leave_screen():
    pass

# Common screen management
func go_to_screen(type, name):
    current_screen = name
    var scr = type.instance()
    scr.connect("next_screen", self, "on_next_screen")
    scr.connect("leave_screen", self, "on_leave_screen")
    screens.push_back(scr)
    $Screens.add_child(scr)

# Screen transitions
func go_to_battle_screen():
    go_to_screen(BattleScreen, 'battle')