Animation Tree State Machine Setup w/ Conditions & BlendSpace2D - Godot 4 Resource Gatherer Tutorial

Learn how to set up an animation tree with an animation tree state machine as it's root node. To travel between nodes in this setup, I setup conditions which are set through the player's script and the animation state machine switches animations and blend trees based on those conditions. To achieve 4 directional animations, BlendTree2Ds are helpful since they let you switch animations from directional input.
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[@DarkMac]

Or, or. Hear me out on this😀 instead of: if velocity == Vector2.ZERO: animation_tree["parameters/conditions/idle"] = true animation_tree["parameters/conditions/is_moving"] = false else: animation_tree["parameters/conditions/idle"] = false animation_tree["parameters/conditions/is_moving"] = true if Input.is_action_just_pressed("use"): animation_tree["parameters/conditions/swing"] = true else: animation_tree["parameters/conditions/swing"] = false do this: animation_tree.set("parameters/conditions/idle", velocity == Vector2.ZERO) animation_tree.set("parameters/conditions/is_moving", velocity != Vector2.ZERO) animation_tree.set("parameters/conditions/swing", Input.is_action_just_pressed("use") )

[@sam_leishman]

I love you

[@Bogwell-cx3vc]

Thank you so much, i didnt want to write out 1000 lines of code for animation stuff.

[@luisfernandosousa81]

Muito obrigado meu amigo.

[@Clarkaraoke]

Tested and working in Godot 4.3

[@HurricaneSA]

Frame rate dependent operations like animations should preferably be done in _physics_process. You won't see see a difference on small projects but when you have a large project that is running many calculations in _process you might run into problems. Simple rule of thumb is, _physics_process for moving and animating stuff and _process for everything else like inventory management, file operations, parsing text and so forth.

[@Big_Theft_Auto]

Thanks for the tip, most people in here probably don't even know that (I didn't know that)😂

[@mikeabolinsh8343]

it was very useful because i just got a problem with that.

[@HurricaneSA]

@Yurokai You mean like blocking with a shield? Even though the character might not move, the shield and arms and other body parts still change position so, if the _process thread is busy with something else while the character blocks it will likely skip some frames in the animation or the animation might get delayed all together. This is why _physics_process exists so that it can do the visual and physics stuff at the same time while the _process function is busy with non visual stuff like saving, looping though arrays and so on.

[@jauwn]

Dude, I was wracking my brain trying to figure this out yesterday and you couldn't have uploaded this at a more perfect time! Thanks so much!

[@comradechonky6328]

yoo. You use godot?

[@Oliver-Nelson]

I've went through the whole tutorial, but my animation tree can't seem to realize when im Idle or moving, and my animations are stuck to idle left. Anybody smarter than me know whats going on here?

[@kirilolikazuto9695]

same here 🥲

[@SuperDeagle]

In the animation tree, change the Start node connection to Auto.

[@Lersday]

Use AnimatedSprite2D and set different animations for each direction instead and just call to them in the script. Entire video is unnecessarily complicated. Completed doing all this video does in 2 minutes and 10 lines of code. #Play Animations if input_vector.x > 0: animated_sprite.play("walk_right") elif input_vector.x < 0: animated_sprite.play("walk_left") elif input_vector.y < 0: animated_sprite.play("walk_forward") elif input_vector.y > 0: animated_sprite.play("walk_backward") else: animated_sprite.play("idle") This implies youre using Vector2.ZERO which you would need if you want to be able to move diagonally instead of just perpendicularly. func _physics_process(delta): var input_vector = Vector2.ZERO

[@chomiyeons]

i noticed that when i have a idle animation (idle_down for example) with more than one frame and looped and autoplay on load , the animation tree/animations starts bugging . i fixed this by turning off autoplay on load (bc it is also looped) and moved the frame property (in the anim editor) below where the properties i keyed: vframes and hframes . Also , you can also change the blend positions in the anim tree inspector to start the game in a certain animation

[@yukku121]

Thank god I saw this comment. The autoplay was killing me haha

[@MrStovi]

I followed this tutorial 1-1 and my Animation Tree glitches out. It will force my character to start their idle_down animation no matter their state every second or so. and it's ONLY when the Animation Tree is active.

[@alexanderwurfl2879]

I think you can make this a little easier: if you put the 4 idle animations in the walk blendspace, each to .1 in the respective direction and if you say in the code: if direction.length() >= .1: animation_tree... = direction Then it should be possible to combine the walk and idle animations

[@powertomato]

@2:30 I just figured out you can actually have complex conditions, but you need to put them in the "expression" field

[@kiryonnakira7566]

IDK if it's to be easier on beginners or not, but watching : ```gd if velocity == Vector2.ZERO: animation_tree["parameters/conditions/idle"] = true animation_tree["parameters/conditions/is_moving"] = false else: animation_tree["parameters/conditions/idle"] = false animation_tree["parameters/conditions/is_moving"] = true if Input.is_action_just_pressed("use"): animation_tree["parameters/conditions/swing"] = true else: animation_tree["parameters/conditions/swing"] = false ``` is killing me. The teachers annoyed us sooo much when we did that, that we just learned the right way to do it, which is: ```gd var is_idle := velocity == Vector2.ZERO animation_tree["parameters/conditions/idle"] = is_idle animation_tree["parameters/conditions/is_moving"] = not is_idle animation_tree["parameters/conditions/swing"] = Input.is_action_just_pressed("use") ```

[@BaconEggsRL]

thank you

[@RoccaaaHD]

Honestly it takes like 4x less work to just do it using a script rather than animation tree.

[@Lersday]

LITERALLY THIS. I made this exact things in 10 lines of code without the BS animation tree and directional BS. He's just using Godot 3's old system before you could do it by scripting and AnimatedSprite2D.

[@josegd112]

13:58 Man, i've been trying to fix the weird animations for 2 hours straight, and all that was needed was to change that... thank you so much for this video lol.

[@CatsDoMaths]

Oh maaan... i missed this part and had the same problem. Your comment safed me so much time

[@Gamewithstyle]

Solid tutorial on blend spaces in Godot! I make most of my state machines with code, but they can get unruly with more than 5 or 6 animations so I’ll have to try this out sometime

[@Playburger1337]

Love your videos! Maybe you not ran into this problem or u did not bother mention: u will need 3 AnimationNodeBlendSpace2D ("triangle") to function with the 2d blend method. :)! Thanks as always!

[@Lightfulsyn]

I’m getting an error “Invalid set index ‘active’ (on base: ‘null instance’) with value of type ‘bool’ any way to fix this

[@reesekelly2388]

Same problem. I'm also not getting the conditions in parameters. I think we might need to improvise and set the coordinates of each parameter instead of use a true or false statement which is going to be tricky

[@celsladroma8048]

magic didnt expect that my game fix just by itself.. thanks godot

[@GeneralChrisGaming]

8:10 I did everything u did but since I'm working in 3d I changed the vector2 into a vector2 outside of that everything is identical but when u go to test it godot crashes on my phone. Did godot 4.3 break this or does this not work for 3d

[@jordanlis85]

This tutorial is amazing. However, I don't understand what the blendspace does. Can anyone summarize it and explains why it's needed to work ?

[@Quilavar]

I think the best example to explain blendspaces is a character aiming. It is meant to blend in between extreme positions like aiming all the way up, down, left or right and automatically blends/lerps in between them in a 2D space. What Chris does here is similar, but given the nature of these animations, he utilizes the blendspace in a less analog, more digital transition of animation directions.

[@NoxiDream]

Nice tutorial, didn't know that existed in Godot ! Also it's really nice that you keep the parts where you messed up, so if people encounter the same issues they know how to diagnosis and correct them, real smart!

[@gonzaloteseira5318]

gracias por el video quedo bien explicado ahora solo queda practicar mucho en las maquinas de estado para poder hacer cualquier maquina de estado de cualquier personaje saludos desde argentina

[@sun5et956]

Hello! I have an issue where if I attempt to use state_machine.travel("animation_name"), anywhere else besides get_input(), the animation won't play. Do you know what could be going on?

[@TCKYATO]

I have a question that for some simple 2d games, with available sprite sheets (standing, running, attacking, jumping), is it necessary to use the animation state machine in godot. What benefits will it bring if used? Actually, I still don't understand the use of the state machine. thanks!

[@3bears744]

IMO for simple games, you may not need a state machine but if you have more than 4 or 5 animations you are going to want a state machine, unless you want to write a very complicated nested set of if/else statements. The state machine itself doesnt need to use the animation tree though, you could use the animated sprite 2d or the animation player if you want to. :) State machines are useful for all kinds of things in games to avoid gigantic if statements.

[@TheIronicRaven]

Can you keep an animation looping using this? I have a walk animation, but it only plays once then stays on the end of the animation until I update a condition. I tried just having the Walk go back to Idle when its done, which kind of works but there is a slight stutter between them. Any ideas how to do this more smoothly?

[@devo6109]

Can i get help? I have the same code as in video and when i once click "F" and start to move around by WSAD animation of attack is looping as long as i change directions: kzbin.info/www/bejne/pp-XonyDh9KEppY

[@TheRealHorizonGD]

For some reason the animations for me do not loop while I'm moving and when I just press the down key once, it plays the walk_down animation without stopping when I stop walking. I would gladly appreciate if anyone could help me fix this issue.

[@vikramthewrench]

how can i do it for vector3 i keep getting Vector 2 errors can convert. animation blend space 2d is Vector 2 so input will be in vector 2

[@ChrisTutorialsYT]

I do very little 3d but I believe you can just drop the 3rd axis for movement input. When moving around, you'd still have the X Y for controlling which direction in 360 degrees the player's moving but then the Z axis is for jumping and gravity so it's not needed in a blend space 3d. So when you get your Vector3 direction or movement velocity, drop the 3rd axis and set the 2 relevant axis as the blend space 2d input. I think that's roughly how it works. Let me know if that works out for you.

[@vikramthewrench]

@@ChrisTutorialsYT Thank you, its worked.

[@fxrxn9803]

i watched so many videos nothing seems to work for me, the animation tree is always stuck on idle after starting never procedes to walk

[@mihYoucef]

same here stops at idle

[@matthewprince6157]

I had the same problem and I figured out mine. For anyone who does, When in the animation tree and setting up you idle, swing and walk connections between your Blendspace2d click the arrow from Start -> idle and make sure it is set to auto. It defaults to Enabled for some reason on my build, (4.1.1)

[@Clarkaraoke]

5:14 error in Godot 4.3 Error at (20, 53): Only identifier, attribute access, and subscription access can be used as assignment target EDIT: Look at DarkMac's comment for solution

[@Tanjutsu4420]

i think its a tactic to get more views

[@frozztie7511]

so i might have missed it, but is there really a point in setting in conditions in the animtree? it works without the conditions afterall

[@Mindboggler123]

My attack animation resets if i switch direction mid attack, can i continue from the last attack frame in he new animation?

[@TuneFish]

same problem here, you got a solution?

[@Mindboggler123]

@@TuneFish nope, unless you separate the sword from the character or restrict movement, since it moves between states without remembering the last frame of the attack it just resets, I just disconnected the sword and had it use a separate animation from my player

[@usedbodypillow6718]

I'm stuck on this too. Any solutions for if you just have a single sprite? Not a separate sword?

[@BooJet]

@@usedbodypillow6718 For example, create global boolean variable "is_swing", in _process() get input and when we changing conditions in function "update_animation_parameters", add some code: if is_swing: animation_tree.set("parameters/Swing/blend_position", direction) Ohh, and change from this: animation_tree.set("parameters/conditions/swing", Input.is_action_just_pressed("use")) to this: animation_tree.set("parameters/conditions/swing", is_swing) Simple enough I guess :) Hope this helps you all.

[@katiedoucet4748]

This is a really great video. I was wondering how I get my character to stop moving while the swing animation is playing

[@dremack1037]

Yaaaassss ❤️

[@PHNTM-qy9zz]

Thanks

[@Nega_kitty]

Help! Godot newbie here, trying to implement this. Everything works well, except the animation resets to the default sprite whenever a direction isn't being pressed. Anyone able to offer any pointers?

[@Nega_kitty]

Help! Godot newbie here. Everything works when applying this, except my animation resets to the default sprite whenever a direction isn't being pressed rather than the direction appropriate idle animation. Anyone got any ideas what I could be doing wrong?

[@protomop76]

this video has been a lifesaver, thank you so much. However, my list under parameters in the animation tree doesn't have a dropdown menu for conditions, so I can't copy and paste the path from there, and my best guess at what it would be called didn't work. Do you have any idea why conditions aren't appearing in the dropdown menu or another way to get the path? I'm so sorry to bother you but staring at Godot and messing around with it and doing google research for an hour or so hasn't gotten me anywhere. Using 4.0.3

[@Koden]

I'm using 4.0.3 and it's working for me. Try going over it again and see if you missed a step.

[@wisiel3861]

I have the same problem now, did you manage to solve it?

[@protomop76]

@@wisiel3861 man, I wish I could remember. I have no idea if I did or not, sorry

[@wisiel3861]

​@@protomop76 No problem, understand, it was a long time ago, thanks for the reply!

[@tuckerwoollard2613]

I have a question Chris, if I have a sprite sheet that's only got left and right sprites but it's an isometric game how would I use the state machine then to make it move when the character goes up or down?

[@nijuatama4362]

thanks alot ! by the way how about if you want the character, like in snes zeda,to keep the last walk facing when moving diagonally ?

[@JilutheFang]

How do I apply this to a 3D Model?

[@User_-_-dm2om]

THXXXXX BRO IT'S WORKS! I'm using godot 4.3 and works fine too

[@Tanjutsu4420]

how much were you payed to comment that

[@eugeneseguiban9863]

I LOVE U BRO

[@luisfernandosousa81]

Enfim, eu conseguir entender isso. Obrigado

[@CasticDigital]

Any idea on how to implement jumping? I tried making it say: if Input.is_action_just_pressed("jump"): if is_on_floor == false: animation_tree["insert correct path here"] = true else : animation_tree["insert correct path here"] = false Yes im using correct pathing and yes i have "jump" set to an actual input named jump

[@DeadIndGames]

Are you making a top down game or a side scrolling game? If you are making a top down game like the one he is making in the tutorial, we set the character body 2d to floating and not grounded. The is_on_floor doesn't work in this mode so your call will never work.

[@CasticDigital]

@@DeadIndGames i see, thank you!

[@DeadIndGames]

@@CasticDigital you're welcome!

[@ssneakyandfriends1626]

ok it looks nice and all. but what if you have an number of animations that ISN'T a Triangle???

[@甘肉]

Your video is very clear. Your video opened the first door for me to understand the animation tree! Thank you so much.

[@Indective]

when testing it, my animations kept switching between idle_right and idle_down, idk why

[@onoof6271]

in animation node (not animationtree) where is parametr auto play it is has to be desebled or evry frame it going to call this animation hope helped)

[@Adroksor]

I'm having issue, where when i move left/rigth the first frame is from walking up/down, ive set up the animation tree correctly and tried playing with the values but it didn't help

[@AkunGabut-cq6do]

why does it keep crashing whenever i type and enter the blend position on the script???

[@morganp7238]

Great tutorial, great work. You got a new sub.

[@axewatchmaker]

Dude, thank you very much!

[@casualiNox]

Amazing tutorial! Thank you for this! I do have one question though. I followed everything but for some reason, after the Up or Down key is pressed, the character faces the opposite direction. Left and Right works fine and it's only happening to the Up and Down direction.

[@CopperAirplane]

13:15 He explains down is the positive direction in Godot. Up in the blendspace is [0, -1], so it should hold the down animation.

[@diobrando5839]

But animation can use with Finite State Machin

[@catsotorious]

How to do this when the attack/action animations are on a different sprite sheet than the walking sheet?

[@sam_leishman]

After creating a new animation in the AnimationPlayer, you can add a keyframe for the sprite texture to the very beginning of the animation. This will make it so when the animation plays, it automatically sets the correct spritesheet for your animation.

[@markerg7915]

Is the animation mixer important or not?

[@AliceT3a]

I thought this tutorial solved my problem, but it hasn't. 9:20 I can not for the life of me get the grey box to appear when you hover over Add animations. It must be a glitch, is there a work around?

[@xorret1]

I figured out my issue if you're still working on this. On the AnimationTree inspection menu, select the AnimationPlayer in the "Anim Player" field.

[@AliceT3a]

@@xorret1 Ahhhhh THANK YOU!

[@xorret1]

@@AliceT3a haha yup, i was struggling with this as well. definitely still seems like a graphical bug in that context menu, made it harder to troubleshoot

[@BrickModding]

this helped a lot :)

[@trashtalketernal]

You don't pronounce the R?

[@Zerocchi]

Thank you! This is what I was looking for!

[@InkyDropGlow]

Very useful video! Thank you!

[@user-vsdf82fd9s]

Thanks for the awesome video!!!

[@pichitosmalltown3239]

how can i make it so that I can swing while moving?

[@ozangozoglu6155]

You should try to figure those kinda things yourself

[@muhamadmatharrizqi8555]

8:27 why is my condition state doesn't updated

[@muhamadmatharrizqi8555]

Nvm I've finished the videos and got no issues

[@andrewhking]

Great video!

[@Wendigoop]

Great exactly what i was looking for.

[@fffantotal]

Great tutorial. Straight to the point. Right what is needed

[@SimplyXtra]

epic tutorial 10/10 liked, shared, subscribed 🤘

[@TheRealKaiProton]

Genius as always, I had to come back to this again, because I couldnt get the 2d blends to work..

[@edoforna9952]

Bro, you literally saved me. Thank u so much!

[@Korn1holio]

Thank you, this is quite useful. I wonder, are the blendspaces really needed in 2D setup, or do they bring redundant complexity down the line? I mean, it's quite possible (albeit not as flashy) to make 8-way movement without animation tree and blending.

[@JimmyDevAndGeek]

Thanks man, you helped me a lot 😁 New suscriptor 😃

[@AZmisc]

Amazing tutorial. Thank you very much.

[@cholasimmons]

i might have to re-play this 3 times but thanks!!

[@TreedaYocaan]

You should do the things even faster then someone would understand even less....

[@imadethisaccounttocomment5529]

I like how fast it is personally

[@guilynngeorge8158]

XD

[@daveroll6463]

i prefer it straight to the point. i hate 1 hour tutorials that pad for long amounts of time. just pause and go back whenever theres something you wanna copy, its a video not a high school class

[@liamthellama8386]

Man’s hating for no reason

[@Korn1holio]

This is the first tutorial I was able to watch till the end. Other tuts that were like "hummm, .. derp...." and were 40 minutes long, I just felt bored.