[Godot Engine] Steering Behaviors collab with GDQuest

[@Gdquest]

*First!* Even _before_ the video was out :o To add a few notes on top of the video: steering behaviors work well for player-controlled vehicles in top-down games, beyond AI. For AI, if you want a companion that follows the player (i.e. companion), you can use the seek behavior. And you can even make it avoid obstacles with the avoidance behavior, but also steer along the path you get from the A* algorithm so it looks like your character is walking naturally through the world and not on a grid.

[@MsKocagoz]

Hi GDquest, I cant move my tank to rotated direction, can you help me, I saw your steering car tutorial but it is based kinematic body, mine is area2d, so I cant implement to my code, your help will be highly appreciated.

[@OBalduriano]

Does "avoidance behavior" have any video explaining it? Or can you indicate?

[@renanstn7659]

If you are using Godot 3.1, here's the code with some adaptations i've made: const MAX_SPEED = 300 const MAX_FORCE = 0.02 export (int, "Seek", "Flee") var mode = 0 var velocity : Vector2 var target : Vector2 func _physics_process(delta): target = get_global_mouse_position() velocity = steer(target) move_and_slide(velocity) func steer(target : Vector2) -> Vector2: var helper= (target - get_position()).normalized() * MAX_SPEED var desired_velocity = Vector2(helper.x, helper.y) if mode == 1: # Flee desired_velocity = -desired_velocity var steer = desired_velocity - velocity var target_velocity = velocity + (steer * MAX_FORCE ) return target_velocity

[@s.u.h.6548]

Thank you.

[@boerbol9422]

thanks for posting, so we can all learn from this!!

[@Seffron]

Don’t suppose anyone has an idea of how to get this to work in Godot 4? 😩

[@felixlipski3956]

this tutorial is a godsend if you want to treat your kinematic body as physical object and apply force to it. I used it to implement a grappling hook, a jetpack and gravity.

[@pigdev]

That's awesome that you found that kind of application for this technique. Congrats, looking forward to see the game released!

[@adhidwipa6027]

Interesting concept behind of moving naturally or I called it smart moving.

[@urchinvalero6529]

Amazing video, and much thanks! The background music in the video IS a good addition, but its high volume makes it too distracting.

[@pigdev]

Thanks! Yeah, I never find a good balance between music and voice volume :/ but I'll keep trying. Thanks for the feedback :D

[@cesarfernandez2368]

Thanks bro!. this is a very useful and interesting video!

[@ВікторГаврилюк-х2ч]

Question: we multiply velocity by delta to insure it doesn't depend on framerate. Don't we need to multiply steering by delta too, so that change in velocity remains stable too?

[@wolliel]

Thanks, this was interesting and easy to understand.

[@jwerlley]

very nice Piggy!!

[@OBalduriano]

How to make an object chase the target, but turning around if you already have an ally in front, for example, a hero vs 3 creatures? They will clamp one after the other and need to turn around. How would you do that at Godot?

[@pigdev]

Check it out this : gamedevelopment.tutsplus.com/tutorials/understanding-steering-behaviors-queue--gamedev-14365

[@froyorex4856]

Can you update this please?

[@Artfrost]

on godot 3.0 does not work

[@RREDesigns]

Would you show us how to create nodes from a script and make them stay permanently in the editor node tree? I tried all the methods suggested in the Q&A page, but it doesn't work.

[@pigdev]

RRE Designs Sure, I'll research it and will make a post to my blog or a simple video, deal?

[@RREDesigns]

That would be super cool. I must warn you that I looked everywhere and did a lot of attempts but no luck. I am working in the 3D editor, though I guess it should work just the same. Also, I am trying to make a little script to spray grass sprites on any mesh, but the MeshDataTool get_vertex_count() method returns the count of tris and not the count of vertices. If you can check into that as well I would appreciate it. I think it is a bug, but I have to be sure before reporting it. I can provide all the assets if you want. Saludos desde Argentina garoto! xD

[@pigdev]

RRE Designs well 3D is not my thing for now unfortunatelly, so I can't cover this yet :c

[@RREDesigns]

I see. Well, forget about the mesh then, but you can still try to add nodes in the 3D editor from a script, it should be the same I think. ;)

[@r1c4rd00]

Muito legal. Parabéns! Vai sair uma versão PtBr?

[@pigdev]

Non :( no máximo eu vou adicionar legenda. Os vídeos agora só saem em EN :/

[@r1c4rd00]

Tudo bem. A legenda já ajuda muito quem não tem o inglês afiado. Muito obrigado. Parabéns pelo trabalho.

[@Roule_n_Scratche]

Valeu pelo video

[@pigdev]

Obrigado por assistir! 😅💜

[@faisalwachid4418]

Do you have a link to learn math for game programming

[@pigdev]

For math...well is a general topic. But here's the one for steering. This site has other, e.g. vectors. gamedevelopment.tutsplus.com/categories/steering-behaviors

[@PiggyPigginton]

I like your channel

[@snstarosciak]

Hey there, I love the music in the beginning of your video haha would you happen to have a link to that so I can listen to it some more? :)

[@pigdev]

Yep, it's on the video's description: incompetech.com/music/royalty-... Artist: incompetech.com/

[@rishianands8472]

Hai Pigdev ,, can you please make this in 3d where the enemy (kinmaticBody) follows and collide with the player(kinematicBody)

[@me2beats313]

Subsribed

[@xlxs1]

Twitter link in video description is incorrect

[@pigdev]

Ohh thanks for the headsup!

[@Marvin-t3e]

I'm sorry but you couldn't break it down enough so a beginner can understand it (since we are coming from a beginners tutorial) this seems like rather advanced stuff to implement. It would have been cool if you could have drawn pictures for better understanding while writing the code and reiterate it after, so we could have something to look at for better understanding. Maybe next time :) teaching something is pretty hard after all, since you have to completely understand it in order to break it down enough for everyone to understand. Cheers!

[@sierz.stradtord7883]

I would like to see what each of these lines do, well I know that you can infer what the normalize function does etc. but a more indepth breakdown with running the code and seeing the results after adding each line would be really helpful.

[@mauricioyaman570]

I folow you my frien, i`m Lack of Love

[@Draxacon]

your tutorial was great! keep making more, i will definitely be using this behavior. I am trying to adapt this system to a player movement script, and, I've been having a few issues. I am trying to use it for super smooth movement, giving it a turn-rate. If anyone has any ideas, that'd be great! pastebin.com/8Y6TMvtQ I cant figure out how to get it to stop, once the key(s) are released, so it goes on forever, and only moves diagonally, because target_direction's values don't return to 0. I tried something like this, but that didn't seem to work. I think its because the Transition Vector doesn't stop following the target_directions value if Input.is_action_just_released("move_up"): direction.y = 0 elif Input.is_action_just_released("move_down"): direction.y = 0 Thank you

[@pigdev]

Draxacon I think we can solve this with the arrival behavior, sorry for the delay, it is supposed to be recorded and published at the first week of July

[@Draxacon]

ok, thank you so much! ill be sure to check that out!

[@pigdev]

6:03 this is not a state machine, NOOB!

[@balaportejean7015]

thx bro Jesus loves you Believe in him and repent

[@pigdev]

Amen, brother. Jesus loves you too. Thanks for the kindness.