Make a Laser Beam in Godot in 1 Minute

[jimmytrouble]

a slower godot 4 version of this would be incredible

[DevDuck]

Learned so much in a minute! Didn't even know about the World Environment node and the effects you can create with it. Time to go try it out!

[Gdquest]

I wanted to try that since I saw Ian Hubert (Blender Lazy Tutorials, the artist who came up with this super snappy tutorial format) perform live at the Blender Conference in 2019.
Feedback and suggestions for improvements, as always, are most welcome!

[uheartbeast]

Video is 1:50 long. Unsubbed.

Just kidding XD Super cool effect in a super short amount of time. Well done.

[JSWausZ]

"I've been GDQuest, you've been you, bye bye."

[yonatankravitz]

LOL, this literally took me 2.5 hours to do, but here is the equivalent in GODOT 4:

---

extends RayCast2D

@onready var casting_particles: GPUParticles2D = $CastingParticles
@onready var collision_particles_2: GPUParticles2D = $CollisionParticles2
@onready var beam_particle_2d: GPUParticles2D = $BeamParticle2D

var is_casting: bool = false :
set(value):
is_casting = value

beam_particle_2d.emitting = is_casting
casting_particles.emitting = is_casting

if is_casting:
appear()
else:
= false
disapear()


func _ready():
is_casting = false

func _unhandled_input(event: InputEvent) -> void:
if event is InputEventMouseButton:
self.is_casting = event.pressed

func _physics_process(delta: float) -> void:
var cast_point := target_position
force_raycast_update()

= is_colliding()

if is_colliding():
cast_point =
=
= cast_point

$Line2D.points[1] = cast_point
beam_particle_2d.position = cast_point * 0.5
= cast_point.length() * 0.5



func appear() -> void:
var tween = create_tween()
tween.tween_property($Line2D, "width", 3.0, 0.2)


func disapear() -> void:
var tween = create_tween()
tween.tween_property($Line2D, "width", 0, 0.1)

[paulsullivan]

Definitely looking forward to more tutorials in this format! Awesome job!

[jonpwoodward]

All very helpful and presented in a compact format that's easy to understand. This was excellent. Thank you!

[aphiwadchhoeun]

love the straight to the point tutorial, quick and easy to digest!

[Raformatico]

Wow! I need to deep into the code and review the video but I'm sure I will be learning so much! I love the two particle effects combined. Congrats!!! 👏

[andrechism]

QUE LINDO!!! Seriously, thanks for teaching how to create these beautiful effects!

[laurenzfoglia]

Really like this kind of teaching techniques. Would love to see more :)

[bevvy.bee]

10/10 good tutorial for neat effects, I'll like to see this as a series

[SamuelSarette]

Love the format, though a one second lead-in of silence, or the word "ok" and small pause, would help because I totally had to rewind to catch that first word again.

[LegendaryHippo]

Short and straight to the point. Perfect!

[TheBaffler]

Amazing, I've struggled so hard to make a working laser in godot. Thanks for this video!!!

[aaronspeedy]

Definitely will use, this is great, and It looks so cool

[ansimuz]

Videos like these are super useful. Please make more.

[felineentity]

Effective, quick, and good looking. Great tutorial, didn't feel like any time was wasted.

[viniguerrero]

I confess I had video speed set to 2 when I first watched it, was like