Rotate object when a key is pressed

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1

4.3

dumb question but i couldnt find a way to solve this
im trying to make a weapon switching system but i want to use as little animations as possible so my plan is to simply lower the gun when unequipping it and raise it when equipping

however im having a problem where i cant do it smootly, for some reason lerp isnt working

extends Node3D

@export var bullets: int = 20
@export var weapon = curWeapon.shotgun #equipped weapon
@onready var hand = $hand

enum curWeapon
{
	shotgun,
	pistol,
	none
}

func _input(event):
	if Input.is_action_just_pressed("weapon1"):
		weapon = curWeapon.shotgun
		
	if Input.is_action_just_pressed("weapon2"):
		weapon = curWeapon.pistol

	if Input.is_action_just_pressed("weapon3"):
		if weapon != curWeapon.none:
			weapon = curWeapon.none
			#rotate hand z to -45 here
2

if you want to use lerp you have to use it in a looping function such as process() since lerp only returns one value. I would use tweens though since they make your life a whole lot easier (basically animations by code).

Godot doc:
https://docs.godotengine.org/en/stable/classes/class_tween.html

YT Tutorial:
https://m.youtube.com/watch?v=GN_HMhvYnYA&pp=ygUjZ29kb3Qgcm90YXRlIGFuIG9iamVjdCB1c2luZyB0d2VlbnM%3D

1 Like
3

You can use animation player for it which is the easiest way, so just play the animation in the codes when any weapon is equal.

4

thank you, was able to get it working like this

extends Node3D

@export var bullets: int = 20
@export var weapon = curWeapon.none #equipped weapon

@onready var hand = $hand
@onready var shotgun: Node3D = $hand/shotgun
@onready var pistol: Node3D = $hand/pistol

var unqTweenPos
var unqTweenRot
var eqpTweenPos
var eqpTweenRot

enum curWeapon
{
	shotgun,
	pistol,
	none
}

func _process(delta):
	if Input.is_action_just_pressed("weapon1"):
		if weapon == curWeapon.pistol:
			unequip(delta)
			await unqTweenPos.finished
		weapon = curWeapon.shotgun
		shotgun.visible = true
		pistol.visible = false
		equip(delta)
		
	if Input.is_action_just_pressed("weapon2"):
		if weapon == curWeapon.shotgun:
			unequip(delta)
			await unqTweenPos.finished
			
		weapon = curWeapon.pistol
		shotgun.visible = false
		pistol.visible = true
		equip(delta)
		
	if Input.is_action_just_pressed("weapon3") && weapon != curWeapon.none:
		unequip(delta)
		weapon = curWeapon.none
		
		await unqTweenPos.finished
		shotgun.visible = false
		pistol.visible = false


func unequip(delta):
	unqTweenRot = get_tree().create_tween().set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_LINEAR)
	unqTweenPos = get_tree().create_tween().set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_LINEAR)

	unqTweenRot.tween_property(hand, "rotation:z",deg_to_rad(-45), delta * 4)
	unqTweenPos.tween_property(hand, "position:y", -2, delta * 8)

func equip(delta):
	eqpTweenRot = get_tree().create_tween().set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_LINEAR)
	eqpTweenPos = get_tree().create_tween().set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_LINEAR)
	
	eqpTweenRot.tween_property(hand, "rotation:z",deg_to_rad(0), delta * 4)
	eqpTweenPos.tween_property(hand, "position:y", 0, delta * 8)