extends Control

func _ready():
	Global.world.width = 512
	Global.world.height = 512
	Global.world.heightmap = generate_heightmap(Global.world.width, Global.world.height)
	get_tree().change_scene_to_file("scenes/Game.tscn")

func generate_heightmap(width, height):
	var heightmap = []

	randomize()
	var noise = FastNoiseLite.new()
	noise.seed = randi()
	
	for x in width:
		heightmap.append([])
		for y in width:
			var wavelength = 2.5
			var terraces = 20

			# var border = border_width + rng.randf_range(-20.0, 20.0)
			var elevation = noise.get_noise_2d(x / wavelength, y / wavelength)

			var nx = 2 * x / width - 1
			var ny = 2 * y / height - 1

			elevation = max(elevation, -1)
					

			if elevation > 0.1:
				elevation = max(pow((elevation) * 1.2, 1.5), 0.1)
			
			elevation = max(elevation, 0)
#			elevation = min(elevation, 1)
				
			elevation = (elevation * terraces)
			
#			print(elevation)
			heightmap[x].append(floor(elevation))
	return heightmap