How to get the mouse position every frame?

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:bust_in_silhouette: Asked By spiderbyte87

I have a 3rd person controller which rotates to face the mouse position. It works great except when the player is moved and the mouse stays still. The body faces the last position of the mouse because it only updates on input, so when I move the mouse the player jumps to face it.

I would very much like to get the mouse position on every frame in the _physics_process(), but it doesn’t seem possible. Is there a workaround for this?

extends KinematicBody

var velocity = Vector3 (0,0,0)
const SPEED = 30
onready var base = get_node("..")
var from = Vector3()
var to = Vector3()
onready var camera = get_node("../Camera")
var gravity = 7
export var jumpForce = 75
onready var jumpRay = get_node("JumpRay")

func _input(event):
	if event is InputEventMouseMotion:
		from = camera.project_ray_origin(event.get_position())
		to = from + camera.project_ray_normal(event.get_position()) * 1000

func _physics_process(delta):
	if Input.is_action_pressed("STRAFE_RIGHT") and Input.is_action_pressed("STRAFE_LEFT"):
		velocity.x = 0
	elif Input.is_action_pressed("STRAFE_RIGHT"):
		velocity.x = SPEED
	elif Input.is_action_pressed("STRAFE_LEFT"):
		velocity.x = -SPEED
		velocity.x = lerp(velocity.x,0,0.1)
	if Input.is_action_pressed("FORWARD") and Input.is_action_pressed("BACK"):
		velocity.z = 0
	elif Input.is_action_pressed("FORWARD"):
		velocity.z = -SPEED
	elif Input.is_action_pressed("BACK"):
		velocity.z = SPEED
		velocity.z = lerp(velocity.z,0,0.1)
	if Input.is_action_just_pressed("JUMP") and jumpRay.is_colliding() == true:
		velocity.y = lerp(velocity.y, 1 * jumpForce, 1)
		velocity.y = velocity.y - gravity * delta * SPEED
#		velocity.y = velocity.y - gravity
		velocity.y = lerp(velocity.y,0,0.1)

	var cameraOffset = get_translation() + Vector3(11,28,27)
	var space_state = get_world().direct_space_state
	var ray = space_state.intersect_ray(from, to, [self,$guns,base,],1, true, true)
	var rayPOS = ray.get("position",Vector3(0,1,0))
	rayPOS.y = self.get_global_transform().origin.y
	if rayPOS.y != 0: #prevents look_at() alignment error 
		$guns.look_at(Vector3(rayPOS.x,0,rayPOS.z), Vector3(0,1,0))

It would help if you shared your project files, but I guess you could just make your from/to updates into a function that is also called when you walk around.

flurick | 2019-09-03 09:26

Unless I’m mistaken mouse position can’t be called outside of _input().

spiderbyte87 | 2019-09-03 15:01

:bust_in_silhouette: Reply From: Thomas Karcher

Save the last known mouse position (event.get_position()) in a variable and calculate/update “from” and “to” in the _physics_process function instead of the input function.