extends Node3D
class_name LevelGenerator

var levelGrid: Array[Array]
@export var gridSize: int = 250

var spawnableRooms: Array[RoomData]

@export var testTexture: CompressedTexture2D

var roomLoader: RoomImageLoader = RoomImageLoader.new()

func _ready() -> void:
	for x in gridSize:
		var newRow: Array
		levelGrid.push_back(newRow)
		for y in gridSize:
			var newCell := GridCell.new()
			levelGrid[x].push_back(newCell)
	
	addArrays2D(levelGrid,roomLoader.loadRoomData(testTexture.get_image()))
	rotateArray2D(levelGrid,4)
	printLevelGrid()


func addGridCells(cell1: GridCell,cell2: GridCell) -> GridCell:
	var returnCell: GridCell = GridCell.new()
	returnCell.spaceTaken = cell1.spaceTaken or cell2.spaceTaken
	returnCell.door = cell2.door
	returnCell.doorOrientation = cell2.doorOrientation
	returnCell.biome = cell1.biome
	return returnCell
func addArrays2D(array1: Array[Array], array2: Array[Array], arr2pos: Vector2i = Vector2i(0,0)) -> void:
	if array1.size() < (arr2pos.x - 1) + array2.size(): return 
	if array1[arr2pos.y].size() < (arr2pos.y - 1) + array2[0].size(): return
	for x in array2.size():
		for y in array2[x].size():
			array1[x+arr2pos.x][y+arr2pos.y] = addGridCells(array1[x+arr2pos.x][y+arr2pos.y],array2[x][y])
func rotateArray2D(array: Array[Array], numberOfRotationsBy90Degrees: int = 1) -> void:
	var size: int = array.size()
	var layerCount: int = size/2
	
	for x in numberOfRotationsBy90Degrees%4:
		for layer in layerCount:
			var first: int = layer
			var last: int = size - first - 1
			
			for element in range(first, last):
				var offset = element - first
				
				var top = array[first][element]
				var right = array[element][last]
				var bot = array[last][last-offset]
				var left = array[last-offset][first]
				
				array[element][last] = top
				array[last][last-offset] = right
				array[last-offset][first] = bot
				array[first][element] = left
func addObject(AddedObject:PackedScene, Parent: Node3D, Position: Vector3, Rotation: Vector3= Vector3(0,0,0)):
	var obj = AddedObject.instantiate()
	Parent.add_child(obj)
	obj.position = Position
	obj.rotation = Rotation
	return obj
func printLevelGrid() -> void:
	var debugCube: PackedScene = preload("res://test/debugCube.tscn")
	for x in levelGrid.size():
		for y in levelGrid[x].size():
			if levelGrid[x][y].spaceTaken:
				addObject(debugCube,self,Vector3(x,0,y))