function state_game_loading()
    local covering
    local event_bus
    local turn
    local banner

    local function show_transition()
        -- slightly scale up the transition dice
        for i, die in ipairs(covering) do
            die.scale = die.scale - 0.03 / i * 80
            die.angle = die.angle - i / 50
            if die.scale < 0 then
                die.scale = 0
            end
            swap_color(12, 15)
            swap_color(13, 15)
            swap_color(14, 15)
            swap_color(0, 15)
            die:draw(-1)
        end
        -- clean
        if table.count(covering, function(d) return d.scale == 0 end) == #covering then
            covering = {}
        end
    end

    local function _enter(self, data)
        assert(data.covering, "needs data.covering")
        assert(data.event_bus, "needs data.event_bus")
        covering = data.covering
        event_bus = data.event_bus
        turn = data.turn
        banner = {
            h = 0,
            w = 1,
        }

        addcoroutine(function()

            while banner.w < 240 do
                banner.w = banner.w *1.1
                waitframes(1)
            end
            if banner.w > 240 then
                banner.w = 240
            end
            while banner.h < 20 do
                banner.h = banner.h + 1
                waitframes(1)
            end
            waitsecs(1.5)
            while banner.h > 0.5 do
                banner.h = banner.h - 1
                waitframes(1)
            end
            while banner.w > 1 do
                banner.w = banner.w * 0.9
                waitframes(1)
            end
            waitsecs(0.5)
            event_bus:emit(EVENT_RESET_DIE)
            event_bus:emit(EVENT_SET_STEP, "rolling")
        end)
    end

    local function update(self)
        -- black banner in the middle
        rect(120 - banner.w / 2, 67 - banner.h / 2, banner.w, banner.h, 0)
        rectb(120 - banner.w / 2, 67 - banner.h / 2, banner.w, banner.h, 15)
        clip(120 - banner.w / 2, 67 - banner.h / 2, banner.w, banner.h)

        -- show who's going first
        local text
        local color
        if turn == "player" then
            color = COLOR_PLAYER
            text = "You begin this round"
        else
            color = COLOR_ENEMY
            text = "Your opponent begins this round"
        end
        prn_border(text, 120, 67 - 4, 12, ALIGN.Center, color)
        clip()

        if #covering > 0 then
            show_transition()
        end
    end

    return { _enter = _enter, update = update }
end