Does Phaser Arcade.Body velocity include deltaTime or not? - phaser-framework

Question

I want to move my character along the x axis with constantly speed. I thought move depends on frame rate. So, technically I should write
sprite.body.velocity.x = speed * deltaTime
where deltaTime = game.time.elapsedMS / 1000;
But if I'm doing that - my character moves vvvvverrry slooow, even if speed = 1000.
But if I'm writing
sprite.body.velocity.x = speed
it works fine. My fps = 60;
Phaser Documentation
says:
velocity - The velocity, or rate of change in speed of
the Body. Measured in pixels per second.
no deltatime....
and all demos do not have deltatime
http://phaser.io/examples/v2/arcade-physics/platformer-basics
http://phaser.io/examples/v2/arcade-physics/asteroids-movement
etc.
So, I don't understand: shoud I calculate deltaTime or just use velocity.x?

Answer 1

Well.... I think I'm stupid...
My calculation of the deltaTime was wrong
The correct formula will be
deltaTime = (elapsedMS * fps) / 1000
elapsedMS - The time in ms since the last time update, in milliseconds, based on time.
fps - Frames per second.
(Only calculated if advancedTiming is enabled).
So, that was my problem.
As the result
body.velocity doesn't include calculation of deltaTime and for smooth movement should use deltaTime that calculated by the formula above.
And it will be something like that
function update() { // <-- it is phaser state method...is called every frame
deltaTime = (elapsedMS * fps) / 1000;
sprite.body.velocity.x = velocityX * deltaTime;
sprite.body.velocity.y = velocityY * deltaTime;
}