How make a system for spent bullet casings to eject after firing in 3D Godot 4?

Scel

I wanted to create the mechanic of ejecting casings after a shot to add some dynamism and juice to my 3D FPS shooter, but I couldn't find a suitable tutorial anywhere to create this mechanic. Does anyone know a way to implement this mechanic? I'd be grateful for any advice and links to learning materials! Thank you in advance for your help!

xyz

Scel I'm just curious; is your 3d fps patchworked entirely out of tutorials?

kuligs2

xyz why not, its possible in this day and age. look, the bicycle wasnt invented in one piece, its an amalgamation of many technologies, they copied things from other things that already existed.. like wheel, gears, chains, seats. etc etc.

as for OP

Create bullet scene with Rigidbody3D, add meshinstance. then Preload that scene in your shoot script, when bulet fires, instantiate new casing from the wapon part, then in the casing script, when it spawns add impulse in some direction, then add timer and when timeout delete the object.

Idk, i havent tested.. there should be ways to streamline this

Scel

xyz creating the first 3d project turned out to be much more difficult than 2d.

xyz

kuligs2 amalgamation of many technologies

Tutorials are not technologies.

kuligs2 why not, its possible in this day and age.

Is it though? Can you name an example?

The thing here is - the exact same "technology" that's used for making shells pop out of weapons is also used for making hundreds other "systems" in a typical 3d game. And that "technology" is - linear algebra. So the right course of action here is to learn linear algebra, instead of asking 100 seemingly unrelated questions all really having the same answer: "learn linear algebra".

To go back to your bicycle analogy, it's like asking over and over "how do I connect part X and part Y of a bicycle" for each two parts that need to go together. The answer is always the same: learn to weld and screw.

Tomcat

xyz Is it though? Can you name an example?

No problem. Here.

Scel creating the first 3d project turned out to be much more difficult than 2d.

You've just given yourself too much of a challenge. Do something that is absolutely clear and understandable to you first.

BirdaoGwra

If you still need the casing eject, you can try this video -
I did not watch this video so I don't know he showed the casing code or not. In case you can't figure it out post here and I will try to post my own code.

Gowydot

Scel
Your first 3d project should've been dodge the creeps!

xyz

Tomcat No problem. Here.

However it was made, it still looks quite far from being a full-blown game.

AlexanderGodot

don't think about it like the real world 3d spent shells are exact same thing as bullet, just in a different direction. 3d is really just the same as 2d but instead of a flat image it's a 3d mesh.

extends RigidBody3D

func _ready() -> void:
	apply_force(Vector3i.UP*500,Vector3i.ZERO)
	apply_force(Vector3i.RIGHT*500,Vector3i.ZERO)


func _on_timer_timeout() -> void:
	queue_free()

so the scene for that needs to be a RigidBody3D with a timer under it set for 5 sec, a meshinstance3d with a new cylinder shape, and a collisionshap with a cylindershape, save it as bull_shell.tscn


extends Node3D

const Bull: PackedScene = preload("res://Scripts/bull_shell.tscn")

func _unhandled_input(event: InputEvent) -> void:
	if event.is_action_pressed("ui_accept"):
		print("bang")
		var BS:=Bull.instantiate()
		BS.rotation_degrees=Vector3(90,0,0)
		add_child(BS)

the scene for this needs a camera3d backset a bit so it can see vec 0, it needs a directional light3d
then just press space bar to fire

you would hook this up to your gun. maybe scale it down and mess with the BS.position = Vector3(0,0,0) to where it's where the gun would produce the spent shells

kkkkkkabc

Particles is ok