extends Node2D

var texture_new_sprite : Texture

var biom_n = preload("res://assets/Ground/n.png")
var biom_n_w = preload("res://assets/Ground/n_w.png")
var biom_w_n = preload("res://assets/Ground/w_n.png")
var biom_w = preload("res://assets/Ground/w.png")

var active_biom = "n"
var passed


func probability(prozent):
	return randf() > 1-(0.01*20) # 20% warscheinlichkeit um biom zu tauschen

func handle_biom_change():
	if active_biom == "n":
		if probability(20):
			active_biom = "n_w"
	elif active_biom == "n_w":
		active_biom = "w"
	elif active_biom == "w":
		active_biom = "w_n"
	elif active_biom == "w_n":
		active_biom = "n"
	set_biom_texture()

func set_biom_texture():
	#print("activebiom_s: " + active_biom)
	if active_biom == "w":
		texture_new_sprite = biom_w
	elif active_biom == "n":
		texture_new_sprite = biom_n
	elif active_biom == "w_n":
		texture_new_sprite = biom_w_n
	elif active_biom == "n_w":
		texture_new_sprite = biom_n_w


func _spawn(last_x_position) -> void:
	var new_ground = preload("res://scenes/ground/ground.tscn").instantiate()
	new_ground.texture = texture_new_sprite
	new_ground.global_position.x = last_x_position+400
	add_child(new_ground)
	new_ground.connect("screen_entered",_on_ground_sprite_screen_entered)


func _on_ground_sprite_screen_entered() -> void:
	handle_biom_change()
	_spawn(get_child(0).position.x)