class_name Minefield extends Node2D

static var instance: Minefield

@onready var minePrefab: PackedScene = preload("res://scenes/Mine.tscn")
@onready var cam: Camera2D = $Camera2D

@export var width: int = 10
@export var height: int = 10
@export var mineCount: int = 10

var mines: Array[Mine]
var spriteWidth: int = 16
var fieldInitialized: bool = false

func _enter_tree() -> void:
	if (instance == null || is_instance_valid(instance)): instance = self
	else: queue_free()

func _ready() -> void:
	var scale: float = 1
	for x: int in range(width):
		for y: int in range(height):
			var mine: Mine = minePrefab.instantiate()
			mine.coord = Vector2i(x, y)
			mine.position = Vector2(spriteWidth * x - (spriteWidth * (width / 2)) + (spriteWidth / 2),
									spriteWidth * y - (spriteWidth * (height / 2)) + (spriteWidth / 2))
			add_child(mine)
			mines.append(mine)

func initField(coord: Vector2i) -> void:
	var picked: Array[Vector2i]
	for i: int in range(mineCount):
		var pick: Vector2i
		while (true):
			pick = Vector2i(randi_range(0, width - 1), randi_range(0, height - 1))
			if abs(coord - pick) <= Vector2i(1, 1) || pick in picked:
				continue
			break
		print("Picked " + str(pick))
		picked.append(pick)
		getMine(pick).type = Mine.MineType.MINE
	for mine: Mine in mines:
		mine.evaluateType()

func getMine(coord: Vector2i) -> Mine:
	if (coord.x < 0 || coord.y < 0 || coord.x >= width || coord.y >= width): return null
	return mines[(coord.x * height) + coord.y]