3d movement question.i try tutorial,but not work well.

Question

https://www.youtube.com/watch?v=-CudxS6EeNA
i try this tutorial.and i write this code.
but i can not move left and back.
forward and right is work.
What's wrong?

extends KinematicBody
var gravity = -9.8
var velocity = Vector3()
var camera
const SPEED = 6
const ACCELERATION = 3
const DE_ACCELERATION = 5


# Called when the node enters the scene tree for the first time.
func _ready():
    camera = get_node("../Camera").get_global_transform()
    print(camera.basis[2])
    print(camera.basis)
# Called every frame. 'delta' is the elapsed time since the previous frame.
#func _process(delta):
#   pass

func _physics_process(delta):
    var dir = Vector3()

    if Input.is_action_pressed("move_fw"):
        dir += -camera.basis[2]
    if Input.is_action_pressed("move_fb"):
        dir += camera.basis[2]
    if Input.is_action_pressed("move_r"):
        dir += -camera.basis[0]
    if Input.is_action_pressed("move_l"):
        dir += camera.basis[0]

    dir.y = 0
    dir = dir.normalized()

    velocity.y += delta * gravity

    var hv = velocity
    hv.y = 0


    var new_pos = dir * SPEED
    var accel = DE_ACCELERATION

    hv = hv.linear_interpolate(new_pos,accel * delta)

    velocity.x = hv.x
    velocity.z = hv.z

    velocity = move_and_slide(velocity,Vector3(0,1,0))

Also, what is 3 × 3 matrix ()? I tried to print.

camera = get_node ("../ Camera"). get_global_transform ()
print (camera.basis)
print (camera)

((-1, -0, -0), (-0, 0.951692, 0.307056), (0, 0.307056, -0.951692))
-1, -0, -0, -0, 0.951692, 0.307056, 0, 0.307056, -0.951692-0, 6.91487, -10.1349

where is difference this?
i think this section is value of rotation.
but what are the other section of question mark?
((rotation,?,?) (?, rotation,?) (?,?, rotation))

please help

Comments

First of all check the names of your actions.

Then if you want to understand matrices read this explanation in the godot documentation.

Answer 1

thanks.i missed input setting.sorry.