tutorials/animation/animation_tree

[giscus[bot]]

tutorials/animation/animation_tree

Introduction: With AnimationPlayer, Godot has one of the most flexible animation systems that you can find in any game engine. The ability to animate almost any property in any node or resource, as...

https://docs.godotengine.org/en/stable/tutorials/animation/animation_tree.html

[axel37]

When having trouble with AnimationTrees not behaving correctly, check that existing AnimationPlayers do not have any animations set to Autoplay on load, as this can cause them to override the AnimationTree's playback.

This documentation page shows how to toggle Autoplay on load.

[AWRootbeard]

You should not spam travel(). If you call it every update, it will restart the animation and make the animations appear to be frozen. See godotengine/godot#71870 for workarounds.

[jack27121]

Advance Condition will turn on auto advance when this condition is set. This is a custom text field that can be filled with a variable name. The variable can be modified from code (more on this later).

more on this later. But where!?

[jack27121]

I ended up being pretty stumped, with how variables and advanced conditions work together.
It seemed you can check if a variable is true, but there's no way to check if that same variable is false.

This will hopefully be obvious after rewrite

[saabdo42]

You're right, the advance condition can only check if something is true. The advance expression though can check any expression true or false, stuff like "variable == true" or "!variable". You would just put your expression in the Advance expression box, make sure there's nothing in the Advance condition box, the transition is set to auto, and in the animationtree root node, set the Advance expression base node to the node that has the script with your variable.

[qq858979911]

How does the advance expression work with C#?

[Calinou]

How does the advance expression work with C#?

It uses the Expression class, which is language-agnostic. See Evaluating Expressions for details.

Beware that property and function names are case-sensitive in Expression though.

[saabdo42]

This might help you as well https://docs.godotengine.org/en/stable/classes/class_animationnodestatemachinetransition.html#property-descriptions

[catprisbrey]

I'm a fan of the advance expressions and use them a bunch. This was a short tutorial video i did showing how to use them, tying them into aspects of the default CharacterBody3D and default script.
https://youtu.be/iosqXfNdJVw

[catprisbrey]

And really documentation from this Godot Blog post should probably be included here as well since it's one of the few places that talks about Animation Tree nodes as Root, Nested, and Group, when to use each, and how to access them in code:
https://godotengine.org/article/migrating-animations-from-godot-4-0-to-4-3/

[atillalifeson]

Can confirm that this helped me set up a pretty comprehensive state machine with advance expressions. A way easier to grasp and faster way to the usual approaches and extremely handy for probably most 2D and 3D projects out there.