animation tree statemachine issue

Shydude

Hi all! i am having some trouble trying to set up an animation tree to work and was after some help... my problem is the animations do not appear.

var statemachine

func _ready():
	statemachine = $AnimationTree.get("parameters/playback")

func _physics_process(delta):
	
	var current = statemachine.get_current_node()

			if Input.is_action_pressed("right"):
				motion.x += ACCEL
				facing_right = true
				statemachine.travel("Run")

(there are other animations but i cut out the fat and just included one for your sake.)

thanks!

UPDATE

i added statemachine.start("Idle") after _ready() and that did it. only issue now is the animations are glitching out... probably need some tweeking but made progress.

Megalomaniak

I somehow doubt that getting "parameters/playback" gives you the statemachine itself, but its been a while since I've poked at the built in state machine.

TwistedTwigleg

@Megalomaniak said: I somehow doubt that getting "parameters/playback" gives you the statemachine itself, but its been a while since I've poked at the built in state machine.

According to the documentation, that is the correct way to get the statemachine, though initially I doubted it as well.

@Shydude - do you get any errors in the Godot console or anything? I doubt there are any errors, but it never hurts to check.

Maybe the reference to the state machine is the issue? Does print(statemachine) show something like [AnimationNodeStateMachinePlayback]?

Also: welcome to the forums! :smile:

Megalomaniak

oof that is such an awkward naming scheme there. But I guess it makes sense, since it isn't a separate state machine but a subset of the animation tree.

Hold-up, why's the if statement indented so far out? You leave something out in-between there?

Shydude

@Megalomaniak said: Hold-up, why's the if statement indented so far out? You leave something out in-between there?

yes between that if and the var statement is the damage system but nothing relevant. here it is if you think it effects anything:

var statemachine

func _ready():
	statemachine = $AnimationTree.get("parameters/playback")

func _physics_process(delta):
	
	var current = statemachine.get_current_node()
	
	if facing_right == true:
		$Sprite.scale.x = 1
	else:
		$Sprite.scale.x = -1
	
	motion.x = clamp(motion.x,-MAXSPEED,MAXSPEED)
	
	if is_colliding == true and cooldown == false:
		hp -= 1
		is_taking_damage = true
		if is_taking_damage == true:
			cooldown = true
			$AnimationPlayer.play("Hurt")
			$Timer.start()
			$Sprite.texture = load("shyspritesnd.png")
			$Timer2.start()
		if hp <= 0:
			is_dead = true
			motion = Vector2(0,0)
			$AnimationPlayer.play("Hurt")
			$CollisionShape2D.free()
			$Timer3.start()
	
	
	if is_taking_damage == false:
		if is_dead == false:
	
			motion.y += GRAVITY
			if motion.y > MAXFALLSPEED:
				motion.y = MAXFALLSPEED
	
	
			if Input.is_action_pressed("right"):
				motion.x += ACCEL
				facing_right = true
				statemachine.travel("Run")

@TwistedTwigleg said: do you get any errors in the Godot console or anything? I doubt there are any errors, but it never hurts to check.

Maybe the reference to the state machine is the issue? Does print(statemachine) show something like [AnimationNodeStateMachinePlayback]?

Also: welcome to the forums! :smile:

thanks! and yes it responds with [AnimationNodeStateMachinePlayback:1267] and no errors.

TwistedTwigleg

Hmm, just as a test, does adding something like statemachine.travel("Run") in _ready right under line 4 work?

Shydude

gave it a try, nothing changed :/

Shydude

oh hey i only just noticed this in the error log E 0:00:02.147 process: Can't travel to 'Run' if state machine is not playing. <C++ Error> Method failed. Returning: 0 <C++ Source> scene/animation/animation_node_state_machine.cpp:327 @ process()

Shydude

UPDATE

i added statemachine.start("Idle") after _ready() and that did it. only issue now is the animations are glitching out... probably need some tweeking but made progress.

its kind of hard to see but the animations are jittering

TwistedTwigleg

Glad you have made some progress! :smile:

For the glitching, it may be that you need to check if the state you are currently is is not the state you want to change to. I know that for the AnimatedSprite node, if you try to play an animation that is the animation you are currently in, it will just reset the animation. I have no idea if that is happening here, but it might be something to look into.

Shydude

i dont think it is since all the states change to different ones. i think the statemachine.start under _ready is forcing it to constantly go back to ("Idle") but if i remove it we go back to the problem in the first place... i find it weird how nobody else is having this issue but im close to giving up. :(

Megalomaniak

You could test if that is the issue by creating a boolean var named sm_init_state or whatever at the top of the file, set it false by default and then change your _ready() to:

func _ready():
    if !sm_init_state:
        statemachine = $AnimationTree.get("parameters/playback")
        sm_init_state = true

Zelta

damm, i had the same error F me around days, and dont know exactly how i fixed but was a human error. just check blending positions are ok in the tree, and loops are ok, and animations are ok, and states are ok. ill bet its a small thing that you are overlooking. U can make a test project only with the animations and put in in one by one for check, it sometimes help. sorry my english.

Shydude

nah didnt work. animations just remain stuck. this is so bazaar im completely stumped why it cant do this simple thing.

thanks for the help anyway guys but im considering cutting my losses with animation trees...

TwistedTwigleg

I might recommend using the AnimationPlayer directly to be honest, and then just writing a simple state machine in GDScript. That is what I have done for pretty much all my projects that have complex 3D animations and it works decently. You can blend animations together using the play function, though I've yet to find a way to do additive animation, though I haven't really had much of a need so I have not pursued it very far.

Shydude

yeah im pretty happy with how it looks anyway so nevermind