Weird compiler error: "Unexpected ("

[Paolo Mazzon]

So I am learning how to use Haxe/OpenFL by making a platformer. Not like on the tutorial, an organised class-based platformer. Usually, when I hop into a new engine, I set up a system with an "Engine" class that has an array/list of all the game objects. I did that in this, and tested through the whole way, and only encountered a problem when I added the player object. I've never really used Haxe before now, only C++, Python, and Gamemaker. (I've done that system in all three.) I'm probably making some stupid error I didn't study about, but any help is appreciated.

So here is the main class:

class Main extends Sprite

{

var gameEngine:Engine;

public function new()

{

super();

// Make the engine

gameEngine = new Engine();

// Create a player

var player = new oPlayer(14, 14, gameEngine);

}

}

You can see we make a new player there, that is

class oPlayer extends GameObject

{

// The player's image is a, well, player...

var bPlayer:Bitmap;

// In the init, just get the image and add it to the openfl display

public override function objectCreate(newX:Int, newY:Int, gameEngine:Engine)

{

// Load the player's bitmap

var tempImage = Assets.getBitmapData("assets/player.png");

var bPlayer = new Bitmap(tempImage);

gameEngine.addChild(bPlayer);

}

}

The player class then inherits GameObject

class GameObject extends Sprite

{

// The class needs to start the Sprite

public function new(newX:Int, newY:Int, gameEngine:Engine)

{

super();

objectCreate(newX, newY, gameEngine);

// Add the object to the game

gameEngine.addObject(this);

}

// A kind of startup function that is called by new

public function objectCreate(newX:Int, newY:Int, gameEngine:Engine)

{

// This is really mostly done by the child object

x = newX;

y = newY;

}

// Some things that will be used by the engine

public function frameEvent(gameEngine:Engine)

{

// This function inheritly does nothing

}

// It's important to note that objects must draw themselves. This is not done for them.

public function drawEvent(gameEngine:Engine)

{

// Same with this one

}

}

Which uses Engine

class Engine extends Sprite

{

// This is the array that holds all the game objects

var gameObjects:Array<GameObject>;

// Create the class

public function new()

{

super();

// Create an empty array

gameObjects = new Array<GameObject>();

// Just for debug

trace("test");

}

// Add an object to the game

public function addObject(objectToAdd:GameObject)

{

// Insert said object at the end of the array

gameObjects.insert(gameObjects.length, objectToAdd);

}

}

I really hate dumping all this code on you guys, but let me help explaining. 

Main function happens, creates Engine, then creates the player -> which should call the GameObject's constructor. 

The full error message is

Source/Main.hx:23: characters 26-27 : Unexpected (

Source/Main.hx:23: characters 29-30 : Unexpected ,

Source/Main.hx:23: characters 29-30 : Unexpected ,

That is all the code in the project aside from the imports, so there is nothing else to post.

I appreciate any help provided.

P.S. I'm compiling to Neko.

[Andy Li]

First thing I notice is that oPlayer is an invalid name for Haxe types. Haxe requires types to have names that start with upper cased letters.

See if changing that helps.

Best,

Andy

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[Mark Knol]

I want to mention that some of your comments don't make sense. "Create the class" for example, should be "Create the instance of the class" if you want to write it correctly. But .. this is obvious for a constructor function (that's what constructors do; creating instances). If your function says addObject, I also expect it to add the given object, so no need to repeat that multiple times. So I would not spend time adding such comments. Unless you are writing a tutorial of course :) 

I hope your problem is solved by the uppercase class name, I couldn't spot any other errors too.

[Paolo Mazzon]

On Monday, November 9, 2015 at 9:49:03 PM UTC-8, Andy Li wrote:

First thing I notice is that oPlayer is an invalid name for Haxe types. Haxe requires types to have names that start with upper cased letters.

See if changing that helps.

Best,

Andy

I completely forgot about that. So caught up in trying to make it look like my old C++, I forgot about basic Haxe rules.

Thanks a ton man!

Anyway, I know about the comments. I'm super OCD about them, no matter how useful they are. I originally had the problem of not enough comments, but then I went a little overboard with them...