Godot Version
4.2.2

Question
hello i am very very new to Godot so thank you for helping me. i am working on a 2d platformer and i am trying to add a dash to the game where the player moves towards the mouse and i got it working however when i dash diagonally it seems to go about half the distance as if i go straight up, down, left, or right, here is the script:

extends CharacterBody2D
@onready var sprite_0001_png = $"Sprite-0001_png"

const dash_time = 0.1
const dash_speed = 600
var dashing = false
var dash_charge = 1

var movement_lock = false
const SPEED = 250
const JUMP_VELOCITY = -600
var death = 0
var player_pos
var mouse_pos

func _process(delta):
    mouse_pos = get_global_mouse_position()
    player_pos = get_global_position()
    pass


    

var gravity = ProjectSettings.get_setting("physics/2d/default_gravity")
func player_die():
    velocity = Vector2(0, 0)
    movement_lock = true
    await get_tree().create_timer(1).timeout
    dashing = true
    get_tree().reload_current_scene()
    movement_lock = false

            
func _physics_process(delta):
    dash()
    

    if not movement_lock == true and not is_on_floor():
        velocity.y += gravity * delta
    if is_on_floor() and dash_charge < 1:
        dash_charge += 1

    # Handle jump.
    if not movement_lock == true and Input.is_action_just_pressed("jump") and is_on_floor():
        velocity.y = JUMP_VELOCITY

    # Get the input direction and handle the movement/deceleration.
    if not movement_lock == true:
        var direction = Input.get_axis("move_left", "move_right")
        if direction:
            velocity.x = direction * SPEED
        else:
            velocity.x = move_toward(velocity.x, 0, 15)
                
    var isright = velocity.x < 0
    sprite_0001_png.flip_h= isright
            
            
    move_and_slide()
func dash():
    print(mouse_pos)
    if dash_charge > 0 and not dashing:
        var dir
        
        if Input.is_action_just_pressed("dash"):
            
            velocity = Vector2(0, 0)
            
            movement_lock = true
            dash_charge -= 1
            dashing = true
            
            dir = (mouse_pos - player_pos)
            
        
            dir = dir.normalized()
            
        
        
            velocity = dir * dash_speed
            
            dash_charge -= 1
            dashing = true
            
            await get_tree().create_timer(dash_time).timeout
            dashing = false
            movement_lock = false