Why Can't I Access Properties on my custom class?

Help Programming
,
1

Godot Version

4.3

Question

I am making a tile-based game (well let’s call it a prototype) and so I have a big array of tiles. I made a Tile class here that should work:

class_name Tile extends Object

var id: int
var pos: Vector2i
var owner: int = 0
var building_id: String # Probably not gonna be a string!
var elevation: int = 0

func _init(_id: int, map_size: Vector2i, _owner: int = 0, _elevation: int = 0,
		_building_id: String = "empty") -> void:
	id = _id
	pos = Vector2i(_id % map_size.x, floor(_id / map_size.y)) #malo by fungovat
	owner = _owner
	elevation = _elevation
	building_id = _building_id
	print("Tile created: id=", id, " pos=", pos, " owner=", owner, " elevation=", elevation)

I then create a bunch of tiles here:

extends Node

var master_board: Array = [Tile] # Vsetky tiley, bud proste dlhy array alebo arraye (riadky) tileov
const MAP_SIZE = Vector2i(10,10)

func _ready() -> void:
	for i in range(0, MAP_SIZE.x*MAP_SIZE.y):
		var tile = Tile.new(i, MAP_SIZE)
		master_board.append(tile)

Now I hope I’m not completely misunderstanding the topic, but there’s no reason why something like this shouldn’t work.

extends TileMapLayer


# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	for i in range(Board.master_board.size()):
		var t = Board.master_board[i]
		set_cell(t.pos, 0, Vector2i(0,0))

However when I try to access any of the properties, it throws this error:

Invalid access to property or key 'pos' on a base object of type 'GDScript'.

Again, I hope I’m not misunderstanding the topic but WHY? How else am I supposed to do things? Thanks for any help!

2

Try modifying this line:

var t = Board.master_board[i]

var t = Board.master_board[i] as Tile

as is effectively a safe way of casting. If the variable can be cast to the specified type, then great, otherwise the assignment is null.

3

You are inserting the Type itself Tile as the first element of the array. If you want a typed array you can specify it within the type declaration

 var master_board: Array[Tile] = [] # No elements
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