SomeShit

local component = require('component')
local event = require('event')
local chat = component['chat_box']
local redstone = component['redstone']
local sensor = component['openperipheral_sensor']
local players_old, exit_gate = 0, true
chat.setName("§bОбменник§7§o")
chat.setDistance(10)
local cords = {
    pos_1 = {
        x = -1,
        y = 3,
        z = -6
    },
    pos_2 = {
        x = 5,
        y = 6,
        z = 2
    },
    exit = {
        x = 2,
        y = 3,
        z = -6
    }
}


local function get_players_string(player_list)
    local players_string = ''
    for i in pairs(player_list) do
        if i == 1 then
            players_string = player_list[i]
        else
            players_string = players_string .. ', ' .. player_list[i]
        end
    end
    return players_string
end


local function int_cords(cords)
    return {
        x = math.floor(cords['x']),
        y = math.floor(cords['y']),
        z = math.floor(cords['z'])
    }
end


local function get_players(exit)
    local players, players_in = sensor.getPlayers(), {}
    for player in pairs(players) do
        local act, coords = pcall(function() return int_cords(sensor.getPlayerByName(players[player]['name']).basic()['position']) end)
        if act then
            if (cords['pos_1']['x'] <= coords['x'] and coords['x'] <= cords['pos_2']['x'] and
                cords['pos_1']['y'] <= coords['y'] and coords['y'] <= cords['pos_2']['y'] and
                cords['pos_1']['z'] <= coords['z'] and coords['z'] <= cords['pos_2']['z']) then
                if exit and not (coords['x']==cords['exit']['x'] and coords['y']==cords['exit']['y'] and coords['z']==cords['exit']['z']) then
                    table.insert(players_in, players[player]['name'])
                elseif not exit then
                    table.insert(players_in, players[player]['name'])
                end
            end
        end
    end
    return players_in
end


while true do
    local trade_players = get_players(exit_gate)
    if #trade_players > 1 and players_old ~= #trade_players then
        active_button, exit_gate = true, false
        chat.say('§4В кабинке несколько игроков, обменник заблокирован: §d[§b' .. get_players_string(trade_players) .. '§d]')
        redstone.setOutput(4, 0)
    elseif #trade_players == 1 then redstone.setOutput(4, 1)
    elseif #trade_players == 0 then redstone.setOutput(4, 0) end
    if players_old > 1 and #trade_players <= 1 then
        active_button, exit_gate = false, true
        chat.say('§2Обменник разблокирован')
    end
    players_old = #trade_players
    os.sleep(0)
end