extends Node

class_name World

var heightMap: Array
var temperatureMap: Array
var moistureMap: Array

var blocs: Array
var entities: Array

var width: int
var height: int

func get_neighbours_8_at_same_height(point: Vector2i):
	var neighbours = 0
	var current_bloc = heightMap[point.x][point.y]
	if heightMap[point.x-1][point.y-1] == current_bloc:
		neighbours += Global.directions_8.TOP_LEFT
	if heightMap[point.x][point.y-1] == current_bloc:
		neighbours += Global.directions_8.TOP
	if heightMap[point.x+1][point.y-1] == current_bloc:
		neighbours += Global.directions_8.TOP_RIGHT
	if heightMap[point.x+1][point.y] == current_bloc:
		neighbours += Global.directions_8.RIGHT
	if heightMap[point.x+1][point.y+1] == current_bloc:
		neighbours += Global.directions_8.BOTTOM_RIGHT
	if heightMap[point.x][point.y+1] == current_bloc:
		neighbours += Global.directions_8.BOTTOM
	if heightMap[point.x-1][point.y+1] == current_bloc:
		neighbours += Global.directions_8.BOTTOM_LEFT
	if heightMap[point.x-1][point.y] == current_bloc:
		neighbours += Global.directions_8.LEFT
		
	return neighbours
	
func get_neighbours_4_at_same_height(point: Vector2i):
	var neighbours = 0
	var current_bloc = heightMap[point.x][point.y]
	if heightMap[point.x][point.y-1] == current_bloc:
		neighbours += Global.directions_4.TOP
	if heightMap[point.x+1][point.y] == current_bloc:
		neighbours += Global.directions_4.RIGHT
	if heightMap[point.x][point.y+1] == current_bloc:
		neighbours += Global.directions_4.BOTTOM
	if heightMap[point.x-1][point.y] == current_bloc:
		neighbours += Global.directions_4.LEFT
		
	return neighbours

func neighbours(point: Vector2i):
	var neighbours = []
	
	return [
		Vector2i(point.x, point.y - 1),
		Vector2i(point.x + 1, point.y),
		Vector2i(point.x, point.y + 1),
		Vector2i(point.x - 1, point.y),
		Vector2i(point.x + 1, point.y - 1),
		Vector2i(point.x + 1, point.y + 1),
		Vector2i(point.x - 1, point.y + 1),
		Vector2i(point.x - 1, point.y - 1)
	]

func get_bloc(point: Vector2i):
	var bloc = {}
	bloc["position"] = Vector3i(point.x, heightMap[point.x][point.y], point.y)
	for key in blocs[point.x][point.y].keys():
		bloc[key] = blocs[point.x][point.y][key]
		
	return bloc

func get_height(point: Vector2i):
	return heightMap[point.x][point.y]

func add_entity(position: Vector2i):
	entities.append(Entity.new(entities.size(), position))
	blocs[position.x][position.y]["entity"] = entities.size() - 1
	return entities[entities.size() - 1]

func cost(point1: Vector2i, point2: Vector2i):
	var cost = 1
	if (
		(point1.x == point2.x + 1 and point1.y == point2.y + 1) or 
		(point1.x == point2.x + 1 and point1.y == point2.y - 1) or 
		(point1.x == point2.x - 1 and point1.y == point2.y + 1) or 
		(point1.x == point2.x - 1 and point1.y == point2.y - 1) 
	):
		cost = 1.1
	return cost