Jitter on collision

SquiVolt

I'm having a really weird issue. I've been working on basic movement code for a JRPG recently; it works for the most part, but I'm having issues with collision. While it works smoothly normally, when the player runs into a wall, their sprite starts to jitter. For some reason, this only happens with colliding with something.

The player is a KinematicBody2D. Here's the movement script I'm using:

func _physics_process(delta):
	var direction = Vector2.ZERO

	if Input.is_action_pressed("stick_right"):
		direction.x += 1
		dir = 2
	if Input.is_action_pressed("stick_left"):
		direction.x -= 1
		dir = 1
	if Input.is_action_pressed("stick_down"):
		direction.y += 1
		diry = 2
	if Input.is_action_pressed("stick_up"):
		direction.y -= 1
		diry = 1
		
	if Input.is_action_pressed("button_x"):
		speed = runspeed
	else:
		speed = walkspeed
	
	direction = direction.normalized()
	direction *= speed
	
	if direction != Vector2.ZERO:
		if dir == 1:
			animate("walk_l")
		elif dir == 2:
			animate("walk_r")
		$Player.move_and_collide(direction)
	else:
		if dir == 1:
			animate("stand_l")
		elif dir == 2:
			animate("stand_r")

TwistedTwigleg

How does the sprite jitter? Is it the animation, or the entire sprite that is jittering?

The jittering is probably due to sub-pixel movement, where the physics position is between two pixels (like 0.5 instead of 1.0). Do you have use pixel snap enabled in your project settings? Also, something else you could try is to have the position of your sprite always be pixel-perfect using a code-based solution, like described on this Reddit post.