extends Node

signal update_currency(amount)

var __currency: int
var __items: Array


func _ready() -> void:
    __currency = 100
    __items = []
    return


func get_currency() -> int:
    return __currency


func add_currency(amount: int) -> void:
    __currency += amount
    emit_signal('update_currency', __currency)
    return


func contains(item: String) -> bool:
    if item in __items:
        return true
    return false


func add(item: String) -> void:
    __items.append(item)
    return


func remove(item: String) -> void:
    for k in range(len(__items)):
        if __items[k] == item:
            __items.remove(k)
    return