51 lines
1.1 KiB
GDScript

class_name Generator
extends Node3D
@export var scene: PackedScene
@export var noise: Noise
@export var size_x: float
@export var size_z: float
@export var step: float = 1
@export var density: float
@export var scale_min := 1.0
@export var scale_max := 1.0
@export var tilt := 0.0
func _ready():
if !visible:
return
rebuild()
func rebuild():
remove_children()
for x in range(-size_x, size_x, step):
for z in range(-size_z, size_z, step):
if noise.get_noise_2d(x, z) < 1 - density * 2:
continue
var instance := generate(x, z)
add_child(instance)
func generate(x: int, z: int) -> Node3D:
var t := scene.instantiate() as Node3D
t.position.x = x
t.position.z = z
var angle_xz := randf() * TAU
t.rotation.x = cos(angle_xz) * randf() * tilt
t.rotation.y = randf() * TAU
t.rotation.z = sin(angle_xz) * randf() * tilt
var uniform_scale := scale_min + randf() * (scale_max - scale_min)
t.scale = Vector3(uniform_scale, uniform_scale, uniform_scale)
return t
func remove_children():
var num_children = get_child_count()
for n in range(num_children):
get_child(num_children - 1 - n).queue_free()