Undefined is not a function

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Started by VexGaming Mar 26, 2018, 12:08 PM 10 posts View original ↗

VexGaming

#1 Mar 26, 2018, 12:08 PM Source

As you can see i'm trying to create a sample window and scene for an additional option in the menu but whenever i select the option it would just say that typeerror:undefined is not a function. I traced the problem and its because of this line: this._techniqueWindow = new Window_Equip_Technique(); however if i change the colored line with some of the window precreated like new Window_Options() it would work. i hope someone could enlighten me with this.

edit: btw i also used main menu manager of yanfly

Code:

function Window_Equip_Technique() {
    this.initialize.apply(this, arguments);
}

Window_Equip_Technique.prototype = Object.create(Window_Base.prototype);
Window_Equip_Technique.prototype.constructor = Window_Equip_Technique;

Window_Equip_Technique.prototype.initialize = function() {
    var width = this.windowWidth();
    var height = this.windowHeight();
    var x = (Graphics.boxWidth - this.width) / 2;
    var y = (Graphics.boxHeight - this.height) / 2;
    Window_Base.prototype.initialize.call(this, x, y, width, height);
};

Window_Equip_Technique.prototype.windowWidth = function() {
    return 480;
}

Window_Equip_Technique.prototype.windoHeight = function() {
    return 240;
}

Window_Equip_Technique.prototype.refresh = function() {
    this.contents.clear();
    this.drawTextEx("OMG..", 0, 0);
};

Window_Equip_Technique.prototype.open = function() {
    this.refresh();
    Window_Base.prototype.open.call(this);
};

// Scene

// var _Scene_Menu_createCommandWindow = Scene_Menu.prototype.create;
// Scene_Menu.prototype.createCommandWindow = function() {
//     _Scene_Menu_createCommandWindow.call(this);
//     this._commandWindow.setHandler('technique',    this.commandTechnique.bind(this));
// };

Scene_Menu.prototype.commandTechnique = function() {
     SceneManager.push(Scene_Technique);
};

//Scene

function Scene_Technique() {
    this.initialize.apply(this, arguments);
}

Scene_Technique.prototype = Object.create(Scene_MenuBase.prototype);
Scene_Technique.prototype.constructor = Scene_Technique;

Scene_Technique.prototype.initialize = function() {
    Scene_MenuBase.prototype.initialize.call(this);
};

Scene_Technique.prototype.create = function() {
    Scene_MenuBase.prototype.create.call(this);
    this._techniqueWindow = new Window_Equip_Technique();
    this._techniqueWindow.setHandler('cancel', this.popScene.bind(this));
    this.addWindow(this._techniqueWindow);
};

Scene_Technique.prototype.start = function() {
    Scene_MenuBase.prototype.start.call(this);
};


//Window

Poryg

#2 Mar 26, 2018, 01:23 PM Source

It's a pity you didn't view the console by pressing f8. It can show you where the error is.

The very first line only says what kind of an error it is. In this case dadada is not defined, in your case undefined is not a function.
Btw. undefined is not a function means you're trying to call a class method that is not defined.
The second line shows where the error is located. In my case it's inside a function DataManager.makeSavefileInfo. Next to it there's a script name and the line where exactly this error is. I censored the name of the script, but then there's also 2094 - line where the mistake is located. The rest is irrelevant, it's just a stack of function calls that led to this mistake.
You'd see this way that you have a typo in one of your functions, specifically in windoHeight. So you defined windoHeight, but are calling windowHeight.
Nolonar

#3 Mar 26, 2018, 01:40 PM Source

@Poryg is correct.
The error you're experiencing is because windowHeight is undefined (you defined windoHeight instead).

Just to be sure, I had a look at Window_Base (which Window_Equip_Technique inherits from), and windowHeight is not defined there (or in any of its ancestors) either.
VexGaming

#4 Mar 26, 2018, 01:56 PM Source

AH! SH*T ME. HAHAHAHA if i can just turn back time and not post this haha ok i forgot how to open console but thanks for helping me. my bad.

edit: also are there some tutorials or manual about the basic functions?
Poryg

#5 Mar 26, 2018, 02:20 PM Source

I don't know about any real tutorials. The best teacher is experience.

VexGaming

#6 Mar 26, 2018, 02:28 PM Source

true2 ok ok lastly i hope i don't sound demanding and idiotic i manage to create the window now the problem is giving it some handler so at this line: this._techniqueWindow.setHandler('cancel', this.popScene.bind(this)); It's giving the same typeerror. i wanted to make it so that whenever i enter technique command i can return to the menu by pressing cancel

Spoiler

Code:

function Window_Equip_Technique() {
    this.initialize.apply(this, arguments);
}

Window_Equip_Technique.prototype = Object.create(Window_Base.prototype);
Window_Equip_Technique.prototype.constructor = Window_Equip_Technique;

Window_Equip_Technique.prototype.initialize = function() {
    var width = this.windowWidth();
    var height = this.windowHeight();
    var x = (Graphics.boxWidth - width) / 2;
    var y = (Graphics.boxHeight - height) / 2;
    Window_Base.prototype.initialize.call(this, x, y, width, height);
    this.refresh();
};

Window_Equip_Technique.prototype.windowWidth = function() {
    return 480;
}

Window_Equip_Technique.prototype.windowHeight = function() {
    return 240;
}

Window_Equip_Technique.prototype.refresh = function() {
    this.contents.clear();
    this.drawTextEx("OMG..", 0, 0);
};

Window_Equip_Technique.prototype.open = function() {
    this.refresh();
    Window_Base.prototype.open.call(this);
};

// Scene

// var _Scene_Menu_createCommandWindow = Scene_Menu.prototype.create;
// Scene_Menu.prototype.createCommandWindow = function() {
//     _Scene_Menu_createCommandWindow.call(this);
//     this._commandWindow.setHandler('technique',    this.commandTechnique.bind(this));
// };

Scene_Menu.prototype.commandTechnique = function() {
     SceneManager.push(Scene_Technique);
};

//Scene

function Scene_Technique() {
    this.initialize.apply(this, arguments);
}

Scene_Technique.prototype = Object.create(Scene_MenuBase.prototype);
Scene_Technique.prototype.constructor = Scene_Technique;

Scene_Technique.prototype.initialize = function() {
    Scene_MenuBase.prototype.initialize.call(this);
};

Scene_Technique.prototype.create = function() {
    Scene_MenuBase.prototype.create.call(this);
    this._techniqueWindow = new Window_Equip_Technique();
    this._techniqueWindow.setHandler('cancel', this.popScene.bind(this));
    this.addWindow(this._techniqueWindow);
};


Scene_Technique.prototype.start = function() {
    Scene_MenuBase.prototype.start.call(this);
};


//Window

Poryg

#7 Mar 26, 2018, 02:32 PM Source

In other to use handlers, the window needs to be prototype of Window_Command, not Window_Base.
VexGaming

#8 Mar 26, 2018, 02:39 PM Source

thank you now i understand.:kaojoy:
Aloe Guvner

#9 Mar 26, 2018, 02:56 PM Source

Poryg said:
In other to use handlers, the window needs to be prototype of Window_Command, not Window_Base.
*technically, Window_Selectable not Window_Command :wink:
Poryg

#10 Mar 26, 2018, 07:43 PM Source

A small mistake, sorry :D