Invalid set index z with value of type float in gdscript - godot

Question

im making my first 3d game for a jam and i was writing some code about the player state machine, it was all working, but when i put this code in the state_run(delta) func, it crashes:
if playerIsMoving == false:
initialize_idle()
it gives me the error invalid set intex z (base int) with value type of float.
Code:
extends KinematicBody
var sensitivity = 0.06
var speed = 10
var h_aceleration = 6
var gravity = 20
var direction = Vector3()
var h_velocity = Vector3()
var movement = Vector3()
var grav_vec = Vector3()
onready var head = $Head
enum STATES { IDLE, RUN, ATTACK, DEAD}
var state_cur : int
var state_nxt : int
var test = Vector3.ZERO
var playerIsMoving = false
func _ready():
Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
state_nxt = STATES.IDLE
func _input(event):
if event is InputEventMouseMotion:
rotate_y(deg2rad(-event.relative.x * sensitivity))
head.rotate_x(deg2rad(-event.relative.y * sensitivity))
head.rotation.x = clamp(head.rotation.x, deg2rad(-89), deg2rad(89))
func _physics_process(delta):
if state_nxt != state_cur:
state_cur = state_nxt
match state_cur:
STATES.IDLE:
state_idle(delta)
STATES.RUN:
state_run(delta)
STATES.ATTACK:
pass
STATES.DEAD:
pass
print(state_cur)
if Input.is_action_pressed("forward") or Input.is_action_pressed("backwards") or Input.is_action_pressed("left") or Input.is_action_pressed("right"):
playerIsMoving = true
else:
playerIsMoving = false
if not is_on_floor():
grav_vec += Vector3.DOWN * gravity * delta
else:
grav_vec = -get_floor_normal() * gravity
func initialize_idle():
state_nxt = STATES.IDLE
movement = 0
func state_idle(delta):
if Input.is_action_pressed("left") or Input.is_action_pressed("right") or Input.is_action_pressed("forward") or Input.is_action_pressed("backwards"):
initialize_run()
func initialize_run():
state_nxt = STATES.RUN
pass
func state_run(delta):
direction = Vector3()
if Input.is_action_pressed("forward"):
direction -= transform.basis.z
elif Input.is_action_pressed("backwards"):
direction += transform.basis.z
elif Input.is_action_pressed("left"):
direction -= transform.basis.x
elif Input.is_action_pressed("right"):
direction += transform.basis.x
else:
playerIsMoving = false
direction = direction.normalized()
h_velocity = h_velocity.linear_interpolate(direction * speed, h_aceleration * delta)
movement.z = h_velocity.z + grav_vec.z
movement.x = h_velocity.x + grav_vec.x
movement.y = grav_vec.y
move_and_slide(movement, Vector3.UP)
if playerIsMoving == false:
initialize_idle()
I alredy tried to round the value or use the int() but it isnt working, the code is giving error on the "movement.z = h_velocity.z + grav_vec.z"

Answer 1

Types.
Look, movement is a Variant, initialized to a Vector3:
var movement = Vector3()
And here you use it as a Vector3:
movement.z = h_velocity.z + grav_vec.z
movement.x = h_velocity.x + grav_vec.x
movement.y = grav_vec.y
move_and_slide(movement, Vector3.UP)
But here 0 is an int not a Vector3:
movement = 0
So after that movement... Continues to be a Variant, but now it has an int value. So when you use it as a Vector3 it fails. Because an int does not have x, y, z.
You can declare movement to be a Vector3 explicitly:
var movement:Vector3 = Vector3()
Or implicitly (inferred from the value you assigned):
var movement:= Vector3()
And then Godot will tell you that this line:
movement = 0
Is an error, because you are trying to set an int to a Vector3.
My guess is that you want to set movement to the zero vector, which is like this:
movement = Vector3(0.0, 0.0, 0.0)
Or like this:
movement = Vector3.ZERO
Or - similarly to how you initialized it - like this:
movement = Vector3()