Walk With Velocity

Part of the Input and Movement section of Coddy's Godot journey. Lesson 8 of 28.

To walk with the keys, set the velocity from Input.get_axis() every physics frame, then move:

var speed = 200

func _physics_process(delta):
	velocity.x = Input.get_axis("move_left", "move_right") * speed
	move_and_slide()

Holding right makes velocity.x 200. Holding left makes it -200. Holding nothing makes it 0, so the hero stops when you let go.

With a Node2D you wrote position.x += direction * speed * delta. With a body, velocity is the speed itself. Multiplying it by delta would make the hero 60 times too slow.

Challenge

Easy

Make the hero walk left and right with its velocity.

Above move_and_slide(), set velocity.x to Input.get_axis("move_left", "move_right") times speed.
Leave out delta: move_and_slide() applies it for you.

Press Play and hold an arrow: the hero walks at 200 pixels per second and stops when you let go. Then Check.

Try it yourself

extends CharacterBody2D

var speed = 200

func _physics_process(delta):
	move_and_slide()

All lessons in Input and Movement

1Input Actions

Press to Move Left and Right One Axis Four Directions Just Pressed Unhandled Input

4Smooth Movement

Speed Up Slowly Friction Face the Way You Move Clamp to the Screen Clamp Both Axes

2CharacterBody2D

CharacterBody2DWalk With VelocityWalls Stop You Walk Everywhere Fair Diagonals

5Project: Platformer Hero

Hero: Run Hero: Jump

Hero: Smooth Run

Hero: Face the Way

Hero: Back to the Start

Hero: Reach the Ledge

3Gravity and Jumping

Fall With Gravity Jump Up Only From the Floor Run and Jump Variable Jump Double Jump

Practice on your own: Godot playground