is_on_floor makes jump not work

Question

So when I add "and isonfloor()" it makes the jump function not work at all, but it works before I add the "isonfloor()", I have the floor defined with velocity = moveandslide(velocity, Vector2.UP) so idk, any help? Here's my code;

extends KinematicBody2D

var velocity = Vector2(0,0)

const Speed = 200
const Jumpforce = -900
const Gravity = 30

func _physics_process(delta):
    if Input.is_action_pressed("right"):
        velocity.x = Speed
    if Input.is_action_pressed("left"):
        velocity.x = -Speed
    move_and_slide(velocity)

    velocity.y = velocity.y + Gravity

    if Input.is_action_just_pressed("Jump") and is_on_floor():    
        velocity.y = Jumpforce

    velocity = move_and_slide(velocity, Vector2.UP)

    velocity.x = lerp (velocity.x,0,0.2)

Comments

Are you aware that "jumpforce" is set to a negative number?

Answer 1

Remove the first move_and_slide