extends Node

class_name World

var heightmap: Array
var width: int
var height: int

func get_neighbours_8_at_same_height(point: Vector2):
	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: Vector2):
	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 find_elevation(point: Vector2):
	return heightmap[point.x][point.y]