func float ui_scroll_bar(char* text, s_v2 pos, s_v2 size, float current_scroll, float min_scroll, float max_scroll, s_ui_optional optional = zero)
{
    max_scroll += c_world_size.y;

    float click_percent = ilerp_clamp(pos.y, pos.y + size.y, platform_shared->mouse.y);
    float scroll_percent = ilerp_clamp(min_scroll, max_scroll, current_scroll);
    float full_height = max_scroll - min_scroll;
    float view_height = size.y;

    {
        e_ui_interaction interaction = ui_rect_button(text, pos, {.flags = e_ui_no_dynamic, .layer_override = optional.layer_override, .button_size = size, .base_color = maybe(DARK)});
        if(interaction == e_ui_interaction_pressed)
        {
            // @TODO(tkap, 30/10/2022): repeat
        }
        else if(interaction == e_ui_interaction_active)
        {
            if(click_percent > scroll_percent)
            {
                current_scroll = at_most(max_scroll, current_scroll + view_height);
            }
            else
            {
                current_scroll = at_least(min_scroll, current_scroll - view_height);
            }
        }
    }

    {
        float percent = view_height / full_height;
        float handle_height = view_height * percent;

        s_v2 handle_pos = pos;
        handle_pos.y += current_scroll * percent;

        char* handle_text = format_text("%s_handle", text);
        e_ui_interaction interaction = ui_rect_button(handle_text, handle_pos, {.flags = e_ui_no_dynamic, .layer_override = optional.layer_override + 1, .button_size = v2(size.x, handle_height), .base_color = maybe(GRAY)});
        if(interaction == e_ui_interaction_pressed)
        {
            float movement = (platform_shared->mouse.y - platform_shared->last_mouse.y) * (full_height / view_height);
            current_scroll = clamp(current_scroll + movement, min_scroll, max_scroll);
        }
    }

    return current_scroll;
}