User defined types

NoDoubt

I'm coming from a different game engine that used a home-brew programming language based off OOP and some mild .NET influence. With that said, let me get to my problem.

The following code I used to create a custom, or, user-defined type in the language.

_Type platform
	Field ent, x:Float, y:Float, z:Float, ptype
End Type_

I then had to keep each new type-instance I created in a list so I may access them via their creation handle.

_local list_platform:TList = New TList_

To create a new insert into the type I would ::

_local p:platform = new platform_

I then added it to the type list

_listaddlast p, list_platform_

To go through the list to access my type inserts i would ::

_for local a=eachin list_platform
	print a.ent
	print  a.x  
	etc..etc..
next_

I've spent the last 6 hours reading over Godot's scripting fundamentals and watch quite a few videos, but I still havent found what I'm looking for. Is there a simular way in Godot to achieve the above?

I need to make custom containers and store strings, ints, float.. whatever in them all defined by the type field. then be able to access them by handle throughout my code.

Even an array[] of types would work, as long as I would be able to label them for detection.. like array[1].carcolor = red .

cybereality

So you would use Nodes, everything is Godot is a Node (like an Object in other languages). Nodes can contain any valid variables, or other Nodes, or whatever you want. By default, they are visual instances that you can add to the tree (like Sprite, Control, etc.) but you can also create classes solely in code, if you want.

This is the basic syntax: https://gdscript.com/tutorials/classes/

Here is another video with more detail.

NoDoubt

I see I see, so each .gd file added basically becomes a class of its own, If i autoloaded a file say Monsters.gd then I could access that class elsewhere in the frame.

var m = mob.new()
m.health =2

In my above example I created a custom class_name called mob, dropped some health variable into it. Now say I had literally 100's of these inside the mob class i just made. what would be the manner of cycling through the list, removing one from list etc.. am i asking to much here? hehe it's hard coming from a different language and trying to get into the work flow.. im close though! tyvm for any advice.

cybereality

Mob.gd (loose script, not attached to anything).

extends Node

class_name Mob

var health

func set_health(val):
	health = val

func get_health():
	return health

Game.gd (main script attached to a Node2D in the scene tree):

extends Node2D

var mob_count = 10
var mob_list = []

func _ready():
	for m in range(mob_count):
		var mob = Mob.new()
		mob.set_health(rand_range(0.0, 100.0))
		mob_list.append(mob)
		
	for mob in mob_list:
		print("Mob health = ", mob.get_health())

NoDoubt

Simply gorgeous, it was the attached/unattached script i believe messing me up. thank you for the indepth explanation, it has helped me a lot to get a grasp on this framework. I think it'd been easier if I had no coding experience at all rather trying to reprogram my brain lol.

tyvm

NoDoubt

Just wanted to give a progress report, your advice and examples have set me on the right path. I do appreciate it.

cybereality

Yeah, for sure. I love helping people.

NoDoubt

mo.queue_free() mob_list.remove(mo)

Invalid type in function 'remove' in base 'Array'. Cannot convert argument 1 from Object to int.

Oh thats by Index on remove? I suppose i need to keep a counter in my for next loop in order to remove it from the list correctly.

** EDIT - bah ... mob_list.erase(mo).

:+1: :

cybereality

Yes, erase is better for this, but you probably want to remove it from any Arrays before deleting it.

NoDoubt

mo = null ?

cybereality

mob_list.erase(mo)
mo.queue_free()
mo = null

NoDoubt

Invalid type in function 'remove' in base 'Array'. Cannot convert argument 1 from Object to int.

SOOO CLOSE !!!!!!!!!!!!! dang.

cybereality

Oh, I'm sorry, remove is by index, I meant erase.

mob_list.erase(mo)