需要帮助学习RPG教程"对话框"

我已经为你翻译好了：

我到了建立基本的创建、步骤和绘制GUI事件以及"创建对话"脚本的地方。现在是时候在游戏中写一个测试的对话框了，然而完全没有显示出来！

我的Create事件在obj_dialog：

    messages = [];
    current_message = -1;
    current_char = 0;
    draw_message = " ";

    char_speed = 0.5;
    input_key = mb_left;

    gui_w = display_get_gui_width();
    gui_h = display_get_gui_height();

我的Step事件在obj_dialog：

    if (array_length(messages) == 0) exit;
    if (current_message < 0) current_message = 0;

    //get message from array
    var _str = messages[current_message].msg;

    //checking if the message has not been fully drawn yet
    if (current_char < string_length(_str))
    {
    //you can press input key to make the current text go twice as fast
    current_char += char_speed * (1 + keyboard_check(input_key))
    draw_message = string_copy(_str, 0, current_char)
    }
    //else if the string has finished being drawn completely
    else if (keyboard_check_pressed((input_key)))
    {
    current_message++;
    if (current_message >= array_length(messages))
    {
    instance_destroy()
    }

    else
    {
    current_char = 0;
    }
    }

我的Draw GUI事件在obj_dialog：

    gui_w = display_get_gui_width();
    gui_h = display_get_gui_height(); 

    //draw width, draw height, textbox width, textbox height
    var _dx = 0
    var _dy = gui_h * 0.7;
    var _boxw = gui_w
    var _boxh = gui_h - _dy;

    draw_sprite_stretched(spr_box, 0, _dx, _dy, _boxw, _boxh);

    _dx += 16
    _dy += 16

    draw_set_font(Font1);

    var _name = messages[current_message].name;
    draw_text(_dx, _dy, _name);

    //draw message 40 px below name
    _dy += 40

    //wraps text around if it goes past line, 
    //so that it stays inside box.
    draw_text_ext( _dx, _dy, draw_message, -1, _boxw - _dx * 2)

以下是我的对话脚本：

    ///all of the diaglogue script
    function create_dialog(_messages){
    if (instance_exists(obj_dialog)) return;

    var _inst = instance_create_depth(0, 0, 0, obj_dialog);
    _inst.messages = _messages;
    _inst.current_message = 0;
    }

以下是我的测试场景，位于obj_player，Step事件：

    //Player Step Event for test
    if (keyboard_check_pressed(mb_left)) {
        create_dialog([
            { 
      name: "test", 
      msg: "yay, it works" 
    }
        ]);
    }

我已经把自己搞得很乱了 +bananas，试图找出问题，但是我认为我遵循了教程的每一个字节 :( 没有显示任何错误信息，这也很不寻常，希望这意味着有一个非常简单的解决方案，这我完全没有察觉到 !