Modular Character System in Unity (Move, Attack, AI, Pathfinding)

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Let's make a Modular Character Controller where we can build Modules (Movement System, AI, Pathfinding) and compose them to make our Character Controller!
This is also an excellent exercise in learning how to write clean code.
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Hello and welcome, I am your Code Monkey and here you will learn everything about Game Development in Unity 2D using C#.
I've been developing games for several years with 7 published games on Steam and now I'm sharing my knowledge to help you on your own game development journey.
You can see my games at www.endlessloopstudios.com
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[@CodeMonkeyUnity]

Let's make a Modular Character Controller where we can build Modules (Movement System, AI, Pathfinding) and compose them to make our Character Controller! 🌍 Go to admix.in/ and Start Earning Revenue in under 24 hours! 👍 Using the tool helps support the channel!

[@arsenbabaev1022]

is it good idea to use it in RTS ? i feel like i need around 10 modules for all behaviors moving units garher res. atk.

[@CodeMonkeyUnity]

@@arsenbabaev1022 It would be very useful in an RTS. Your Gatherers and Soldiers would share the same Movement and Animation modules with a different Logic module.

[@nxd2877]

i will be glade if the next tut about trigger particle system with 2d trigger by code

[@Norbingel]

Showing the end result of what the tutorial will accomplish right at the beginning of the video so people know whether it's something they want is something every tutorial should do. That alone would get me subscribed if I weren't already.

[@CCV334]

I love the format of his videos they jump into the tutorial right away, no wasted time!

[@mcgeufer]

I came for the tut but stayed for the add. That's actually something I was looking for a long time. Integrating adds in a game instead of disturbing the players expieirence all the time.

[@raghulponnusamy9034]

you are awesome .currently I'm separating visual and core logic using events that made code very easy to use. Thanks for all the videos.

[@TripleCreeper3]

i bought 2 courses and saw around 20 tutorials to find finally one that is oriented to changing movement, weapons, etc... Much thanks!!!

[@mehmedcavas3069]

Ohh yes. The most important thing of solid code. This is by far the best tutorial for clean code and also shows how to add multiple scripts on one go and how to interact with them 😊😊

[@janmarcbaniqued7612]

This is amazing!!! I didn't know we can use interfaces like that. This changes so so much thank you!

[@tiagodarkpeasant]

finally the part i wanted to learn, making simple scripts is easy, using all of them in the same object not so much

[@oyaguni961]

Not going to lie, I love you for introducing me to interfaces. Thank you SO very much for your invaluable content!

[@eierschaedl]

i love the sound of your keyboard. so satisfying.

[@FICHEKK]

Amazing and very helpful video! Please do more of these "good-design" and "architecture" videos!

[@paulblart7378]

Super helpful video! I'm making a defense game and I want a lot of my scripts (target finding, attacking, AI logic, etc.) to be usable by towers, units, and enemies, so a modular system is crucial. That way, I can easily create different behaviors by swapping out components. Thanks a lot!

[@benjaminsnow5095]

Absolute mad lad! You are truly epic!

[@justinwhite2725]

Thanks for sharing admix. I know it’s probably sponsored but it’s highly relevant. Unfortunately most of my games are fantasy and it doesn’t seem appropriate, but I love the idea.

[@deadly_artist]

Share your opinion on that, but I bet it would be funny for players if they were to find ads in cities, towns, sci-fi ships or dungeons or whatever, especially where it doesn't fit at all - as long as it isn't overbearing

[@CodeMonkeyUnity]

Yeah it's a sponsor but the product is excellent, if I did free games I would certainly use it. Banner ads are always awful.

[@kruth6663]

This is what I'm looking for. Thanks!

[@nerdact5920]

Im relearning c# right now and i feel like i understand the importance of this so much better now. Great video which i couldnt appreciate before the way i do now. And I'll probably appreciate it at some later stage even more :D

[@CodeMonkeyUnity]

I'm glad you found the video helpful!

[@digitalfortress1208]

Dude you are awesome. This is good stuff.

[@personanongrata4419]

Hey codemonkey - do you have any plans on covering the stuff in between this and your past A* pathfinding video? I've been following along and am a little lost because it seems like there are a lot of changes from the PathNode/Grid video and this one, with binary trees and all the other pathfinding scripts. thanks!

[@tigransahakyan2840]

Great as always Also it would be really great to see how did you make you animation system in details cause there is so many things in animation system.

[@danielvillalba4457]

Hi, great video, yes I would like to see a video dedicated to interfaces and how to explore their benefits in Unity, I use them a lot in web development in order to enable composition and decoupled designs, I have been using them in Unity for a couple of years during my exploration but I’m sure you have lots of cool implementations.

[@PatagonianDuck]

If you experience that Movement is relative to distance clicked (faster if mouse farther away) then check to see that the Z axis in all components is the same or 0 for 2d. Also check prefabs for this

[@filipgawlik3259]

Please, make a video about interfaces. By the way - do You recommend using Scriptable Objects?

[@CodeMonkeyUnity]

Sure, they can be an insanely useful tool. A lot of official unity things, (like HDRP, URP, Shader Graph) use Scriptable Objects to organize their data.

[@tiagodarkpeasant]

i use for example to make characters, so i change one object and that changes both the controlable character and any interface related to the character, like for example changing the hp in the scriptable object so it affects the character selection interface and the actual hp of the unity i can also have different prefab paths that i put int the scriptable object so depending of the scene the same character could be diferent gameobjects, like overworld object, turn battle object, water level object i am making a pokemon like rpg, and in the scriptable object i list all the skills the species can learn, while saving the moves they know in another class that i use for save games

[@extremeliving592]

You sir, are a genius...

[@zekiozdemir420]

Thanks for making these videos

[@Moon-cr4mu]

this is so useful, thanks!!

[@oldcat1790]

Interfaces video sounds interesting.

[@user-hz4tc2pf3x]

Could you make a video about stuff that isn't considered when talking about tutorials? (E.g.: resolution, build bugs, optimizing code, pixel perfect camera (seriously who knows how that works?), polishing and just more advanced and further-into-development tutorials)

[@mohameddabbour6961]

Yes! please make video about interfaces

[@ghiancarlostan8730]

is this a good way to create a weapon system? like i should create different scripts per unique weapons based on their attack patterns?

[@MaGiStReall]

Love your videos, keep it up! Btw, will there be any multiplayer tutorials?

[@CodeMonkeyUnity]

Yeah I've been meaning to look into the state of Unity DOTS NetCode, hopefully soon!

[@nikolasxyinidis7514]

Thank you soooo much this is very helpful

[@smallg9109]

thanks, i didn't know about interface scripts :)

[@supergalaxysam]

Your tutorial is great; It's very easy to follow along and straight to the point. I know this is meant more for a 2D controller, but I tried to follow it to create a modular controller for 3D games. What would I use in replacement for the code presented within the "PlayerMovementKeys.CS" script to get "W" and "S" to move forward and backward in a 3D space? I am also running into a compiling error with the "PlayerMovementMouse.CS" script because the game is unable to recognize "(UtilsClass.GetMouseWorldPosition());". Unity version is 2020.2.6f1 with VisualStudio 2019.

[@CodeMonkeyUnity]

The easiest thing is just to swap Y movement for Z movement. UtilsClass is part of my utilities, here's how you get the world position kzbin.info/www/bejne/Zpu3gX6waMyUatk

[@magictimm4090]

Why "public const int WALL_WEIGHT = 56000;" in the GridPathfinding class? Must i reduce the 56000 if I reduce the nodeSize ? The Pathfinding in my Project has some problems on edges of objects.

[@LoopyWolf]

All this code, and a great tutorial.. Support!

[@CodeMonkeyUnity]

Thanks for the super thanks! I'm glad you found the video helpful!

[@LoopyWolf]

@@CodeMonkeyUnity While I have your attention, quick question.. Is the code provided for this video what is used in the RTS tutorial? ps I sent you a donation. I hope you got it!

[@CodeMonkeyUnity]

hmm it's been quite a long time since I made this and that video so I'm not 100% sure but since they came out at roughly the same time I think so. For that RTS tutorial I focused just on the selecting characters logic, so the movement is super simple.

[@arcday4281]

You're cool! No doubt you will have more and more subscribers and support, the main thing is not to stop feeding us lessons ))) . I only understood half of it, but it was enough to watch with interest...

[@andrewshandle]

This is great.

[@cbr9731]

I have the problem in direct movement with the mouse, where the transform component does not fit into the mouse position at the moment originating as a vibration.

[@mehmedcavas3069]

can you also show us how you combined it with your animation script? a simple one with walk, idle and attack would be enough

[@Fyres11]

Great idea. Could it be used in a level system? I mean activating a script when you reach a specific level? Would it be a good idea to put all the modular scripts onto the player and use a level up script to enable/disable them depending the player level?

[@SebyGamerZROZ]

Nice work ! ✓

[@PatagonianDuck]

Add This line if (Vector3.Distance(movePosition, transform.position) < .0001f) moveDir = Vector3.zero; // Stop moving when near to avoid sprites shaking when finish moving. This was not included in the video and instead I found it in the game files on his website.

[@zamilamin3646]

where to add this code

[@PatagonianDuck]

@@zamilamin3646 I'm sorry it's been so long, I forget

[@TheBigHeinousAnus]

@@zamilamin3646 it's in the MovePosition class... also for anyone else reading this, if you still get shaking after adding this line, make sure your Rigidbody2D has the correct gravity settings configured. I added that component after adding the scripts and spent a few hours being really confused as to why my RTS units were still acting like they had too much coffee...

[@gfulpakwuli3799]

Really awesome, I am using similar system, of course at runtime time all this components would be enabled/disabled instead of added/removed. I am curious about the light around your character. Is it a light, or simply a sprite with transparency, what is an optimized way to do it?

[@CodeMonkeyUnity]

Yup it is a 2D light, I never tried pushing the 2D Lighting system to it's limits but I never had issues with it.

[@Palutena618]

Great video, as always! I've come across an issue that didn't pop up in your video: When trying to make a character or any object move via the mouseinput, they move towards the point but then overshoot it due to the movespeed jumping back and forth around the destination spot. If I reduce the movespeed, the issue is less pronounced but it still does that for quite a few loops. Also, if I don't normalize the moveDir vector3, there's no jittering at the destination but then the movement is not linear and goes way too fast. Am I missing something here? It's a simple issue but I can't figure out how to solve it in this setup.

[@CodeMonkeyUnity]

Usually you do a distance check to test if it reached the position, and if your character is teleporting then it sounds like its moving more each frame than the distance you're testing for. Either increase the amount that you're testing or test the distance before and after moving, if it's further after than before then you've reached your destination.

[@MatthewChowns]

Could this sort of modular approach be used with DoTs? ie. swapping between two different systems, or enabling/disabling certain features while testing?

[@CodeMonkeyUnity]

Yup, DOTS is already super efficient at only running Systems if there are Entities that match the Query.

[@waltuh08]

you are the best thank you

[@MrAmix2]

You focused on manually changing the scripts, but is it possible to do it during runtime? For example is enemy sees player it switches AI script to chase him and after a while returns back to default state, by enabling / disabling components. Will it work? Great video :)

[@CodeMonkeyUnity]

Yup, that's pretty much what I did when I made the Top Down Shooter game kzbin.info/www/bejne/e6rbZHicptaZg9k When the enemies get spawned they are static, essentially they have their logic and move components disabled while the spawn animation finishes.

[@victrolaface]

If I wanted to separate the player data into a scriptable object i.e. speed, health, strength etc. What is a good approach adhering to modularity? I assume make a InitializeData component that serializes the scriptable object, then each subsequent component, i.e. HealthComponent sets it's field "health" to the InitializeData component's scriptable object's health value. My concern is the usage of get/require component, performance, and coupling of data. Is it better to have a public field in each component for the scriptable object or is my approach above more efficient? Appreciate your feedback.

[@CodeMonkeyUnity]

Having a central script holding all your stats would be a good approach. It would make your scripts tighly coupled with your data script but that's not necessarily a problem. Achieving perfect modularity and code decoupling is a good goal to have but don't let that blind you from your primary goal of actually making your game, sometimes more modularity will actually increase complexity.

[@KalponicGames]

this tutorial is amazing :). You really like top-down games. 90% tutorials you have are top-down

[@CodeMonkeyUnity]

Yup I'm a big fan of Top Down 2D and with that perspective I can showcase pretty much any system possible!

[@KalponicGames]

@@CodeMonkeyUnity is email a good way to contact you? The one on youtube?

[@MalikenGD]

Is the modularity shown here good for ECS (not necessarily DOTS)? Is this a great example of subbing out components or systems?

[@CodeMonkeyUnity]

Hmm yes in the sense that ECS is all about Components so you can have a MoveSimple IComponentData and a MovePathfinding IComponentData However I don't think ECS works with interfaces since that requires type conversion.

[@keelanbowker-obrien2222]

Instead of grabbing rigidbody for move velocity could you grab game object so that move velocity could interact with things like lights?

[@CodeMonkeyUnity]

The MoveTransformVelocity script moves the transform directly without any Rigidbody

[@kerduslegend2644]

this is a great tutorial. although i have a several question, for example "should you reparate animator logic with a movement logic?"

[@CodeMonkeyUnity]

Personally I like to keep logic and visuals as separate as possible, so normally I do separate the movement logic from the animator logic. Although it also depends on the complexity of your project, if it's something simple you can just keep them together. But on complex things I make a separate class that just handles the animation parameters.

[@MB-eq9ew]

Using get component in update , is same with getting in start but way more optimization problem right ?

[@CodeMonkeyUnity]

Yes I only did it that way for the video to demonstrate the system while hot swapping. For a final game you would only do it once on Start

[@utkugokalp3179]

Great video as always! But why did you chose to make an IMovementVelocity instead of an abstract class? Because I would probably choose to create an abstract class in order to reduce code coupling since both of the classes have very little different code. Other interfaces make sense since the actual codes implemented are very different from one another but I really don't understand the purpose of using interfaces for very little code changes, it just seems like code coupling to me.

[@CodeMonkeyUnity]

Usually an interface is meant for exposing certain behaviour whereas an abstract class is meant to represent a more complete object, that's why interfaces are public and have no fields. I don't want MovementVelocity to be an object, I want it to represent a specific behaviour. Interfaces also let you have multiple implemented in one class, so if you had a lot of modules you could create more complex modules that group more simple behaviour.

[@utkugokalp3179]

@@CodeMonkeyUnity Thanks :) I've been trying to understand the difference since like forever :P

[@gdk870]

@@CodeMonkeyUnity This is the best argument read yet for using an Interface vs. Abstract class. Good job.

[@danielcorzo7498]

Hi, I have some questions: Just how modular should I make a character (or anything)? I mean, if I wanted to create something like a character in a RPG (say Skyrim), will I end with dozens of different scripts attached to the character by taking this approach? Also, if I wanted to create my own components (like a Rigidbody), how modular should I make them? Thank you

[@CodeMonkeyUnity]

That depends on your specific scenario. Modularity can be a huge help but it can also be bad, it's just another tool. Make a quick prototype and see which method works best.

[@GamernetsLP]

I am using the MoveTransformVelocity script that you make here together with the mouse position direct movement and the character jitters very hard once they reach their target location. How can I fix that?

[@CodeMonkeyUnity]

Sounds like you need to define some stopping distance and stop it when it gets close, it will never 100% reach the perfect mathematical correct position.

[@mohokhachai]

Professional tutorial

[@techbytefrontier]

Great video, please make one about your animation system.. sync animation in unity sometimes can be very hard for me..

[@CodeMonkeyUnity]

It's based on dynamically modifying meshes kzbin.info/www/bejne/Z2LGaqWNh9SngJo

[@andylockhart257]

Yes please on Interfaces!!

[@terry-]

Great!

[@keetee-ei3er]

Awesom, thansk! How is that you dont need to add IMoveVelocity interface script to player object inspector and it still works?

[@CodeMonkeyUnity]

You don't attach an interface directly to a game object, you attach some MonoBehaviour that implements that interface

[@keetee-ei3er]

@@CodeMonkeyUnity Awesome, thanks

[@pabloandresherreracantilla9177]

Not sure if I'm doing something wrong. When I assign the MoveTransformVelocity script to my player, it starts colliding with other objects. Any ideas?

[@papatomicjusz]

Any progress on that issue?

[@dannykay4649]

Please do a dedicated video on interfaces!

[@jimmyfitzsimmons7170]

At 12:11 I've done the exact setup as you did but with the MoveTransformPosition Script activate my player can't pass through the wall. But if I remove the rigidbody or turned it into a Kinematic Rigidbody he is able to go through the wall. But I didn't see you touch the rigidbody component at all so what am I missing ?

[@CodeMonkeyUnity]

That behaviour is sort of dependent on your framerate. Basically on every Update the transform is being forced inside the wall, but then on the FixedUpdate the Rigidbody tries to move the object away from the wall. So you're probably not missing anything, just running the game at a lower framerate which makes it more "difficult" for the Update code to force the transform inside the wall

[@hidingdissident]

@@CodeMonkeyUnity whats your framerate? I am running this with 160 fps and I am bouncing off the wall when using the MoveTransformPosition script.

[@MrREALball]

Can you make the same thing using dots? Im still not used to thinking in dots terms, so maybe its extremly easy to do, but I cant think of a good way to do so.

[@CodeMonkeyUnity]

DOTS is already component based so the core logic works the same however I don't think DOTS supports Interfaces so thats the one key difference. But you can already have lots of systems that each do their own behaviour depending on the component on the entity.

[@washynator]

Correct me if I'm wrong, but you are not supposed to use GetComponent inside of Update, right?

[@CodeMonkeyUnity]

Yes correct, doing GetComponent on every Update is not good for performance. However in this case I did it that way so that I could demo swapping out the modules in real time, if I had cached them, like you should do in a proper game, it would give me a NullReferenceException when changing the module.

[@washynator]

@@CodeMonkeyUnity Yeah, well that does make sense. Awesome video still! Keep up the great work!

[@markedforstrike]

@@CodeMonkeyUnity maybe we can use variable and check if component available or not. Also once I saw smth with instances, not sure about it, but script was called via ScriptName.Instance.MethodName(); P.S. Hello from Russia, Mr. Worldwide UPD Sorry, it was just public static

[@magictimm4090]

@@CodeMonkeyUnity Have you heard about this? since 4.6 GetComponent in Update is not a problem for performance. www.reddit.com/r/Unity3D/comments/4xptnk/a_c_generic_class_that_wraps_getcomponent_caching/d6hj3iy/

[@quinclarke2331]

Hi i' having a problem with the pathfinding on click, as i followed the grid video generic grid video and also A* pathfinding video. However in none of them is a method called instance or GetRouteWithShortCuts created and i'm confused as too where they've come from. If anyone knows where they're from or if i can replace them with something else as i'm a bit lost right now. Thank you!

[@CodeMonkeyUnity]

The pathfinding that I covered in that video is the simplest thing possible, in most videos where I use pathfinding I'm using a more advanced version of the algorithm. That function simply makes shortcuts where the path is unobstructed, so instead of the unit zig zagging when moving diagonally it just goes straight until it finds a wall

[@llamagame8817]

@@CodeMonkeyUnity I’m guessing “the more advanced version” is covered in your pathfinding with DOTS(insane speed) tutorial? Thanks

[@magecode9585]

very very cool

[@kylemedina5112]

Notes: 11:16 Using Interface script for the ability to switch between scripts(that inherit from the Interface class)

[@ericf.2267]

Would there be any benefits/drawbacks to doing something similar through events, instead of interfaces? I would assume you could make a similar modular character system, but using different architecture (maybe you could address that in an interface video, which I would be totally for). Keep up the good work man!

[@CodeMonkeyUnity]

What do you mean through events? Events just broadcast that something happened, they dont "hold" logic. I guess maybe you could have some base classes and different modules would extend those base classes in different ways and fire off events when something happened? That would be a very strange messy architecture

[@ericf.2267]

In a lot of your videos you use events to also pass along information using delegates and eventhandlers. In this video you use the interface to set up a "contract" about what information gets passed to an agreed upon method (like vectors or positions). I imagine you could have a class set up events that could send along information to subscribing components, which would still "hold" the logic. So you could set up an input class that would pass information to subscribers when keys were pressed or when a mouse was clicked (with the subscribing components handling that even information any way they wanted) Hope that makes more sense!

[@grachamoncha]

At 15:37 you cut away then you have a system called GridPathfindingSystem at the top. Where did you get this? How can I get it? A quick Google doesn't yield any definitive results.

[@CodeMonkeyUnity]

That's my own pathfinding system, it's not a Unity built-in thing so that's why you can't find it. I covered the A* Pathfinding algorithm in detail here unitycodemonkey.com/video.php?v=alU04hvz6L4

[@danielcorzo7498]

Hi, when I hit play in Unity I can’t see the characters, I only get to see pink squares instead of the right sprites, I know this is usually because Unity can’t find the appropriate shaders but the only thing I modified was to change “using UnityEngine.Experimental.Rendering.LWRP;” to “using UnityEngine.Experimental.Rendering.Universal;” so I could get rid of some errors messages. I’m also getting these two warnings: “The referenced script on this Behaviour (Game Object 'Main Camera') is missing!” “The referenced script on this Behaviour (Game Object 'PostProcessingVolume') is missing!” Of missing scripts that were attached to the Main Camera and the PostProcessingVolume Game Objects, any ideas? Thank you

[@michaeljung3251]

Maybe you don't need this anymore but for anyone else - the pink squares issue. After installing all the required packages - Cinemachine, Universal RP, ProBuilder, etc., go to Assets>_>Stuff>Textures>UnitSpriteSheets and for the two pink items, the .mat files, change the Shader type to Universal Render Pipeline > 2D > Sprite

[@dodo5045]

why cant u have 2 scripts using the same interface with 1 disabled, u have to remove the other component completely?

[@Semaj0z]

Why don't u use getaxis for the player wasd movement

[@supapaw]

6:52 actually it has two purposes: to move the rigidbody AND play the animation :)

[@johngalt200]

What are the shortcuts from GetPathRouteWithShortcuts?

[@CodeMonkeyUnity]

It creates paths with direct waypoints instead of stair-like paths, moving diagonal for a long distance instead of up-right-up-right-up-right

[@AstraGamesStudios]

Hey @CodeMonkey ! i was wondering if this code will still work (and with your RTS click and command units video) in top-down 3d? Just like the game you make from the Unity co-op project.... the one with the pigs. 🐷 Thanks!

[@CodeMonkeyUnity]

Sure, all this is doing is moving to a position, that position can be on the XZ plane or XY, getting the mouse position is the big difference unitycodemonkey.com/video.php?v=0jTPKz3ga4w

[@AstraGamesStudios]

@@CodeMonkeyUnity sweet! thanks! btw, if you did a video on a top-down 3D RTS game that would be really cool! Have a good one!

[@AstraGamesStudios]

@@CodeMonkeyUnity sweet! thanks!

[@ronnid8837]

Hey Code Monkey, how would you implement a state machine pattern into a design like this? Say for example, the player should move differently when in inAir_State or in onGround_State? Thanks and nice tutorial as always!

[@CodeMonkeyUnity]

I covered a basic state machine here kzbin.info/www/bejne/mpOTfIqPlryZm68 However in your case if you just want to handle movement with a different speed then a simple boolean isGrounded would be a better approach

[@ronnid8837]

@@CodeMonkeyUnity Thanks, will have a look at that. It's a bit more complex I guess.. I got a bird and he should be able to: - walk on the ground(GroundState) - jump from ground(InAirState) - glide while InAir(GlideState) And all states should treat input differently. I'm stuck on how to implement this.. Have you got an idea how to deal with this?

[@Ashley-xb1dz]

@@ronnid8837 It seems like you would just trigger different states, walk (arrow keys) jump (space bar) double jump/glide (press space bar twice) ...

[@theashbot4097]

with the mouse input and move position it makes the character go past the target then I get the glitchy movement where the unit never hits the way point. how did not not get it?

[@CodeMonkeyUnity]

Depends on how fast you move it and how tiny is your reachedPositionDistance. IF you move too fast and you have too tiny distance it might constnatly jump back and forth because it never quite gets there

[@Michal005]

Can you make video on storage or chest compatible with your inventory???

[@CodeMonkeyUnity]

The Inventory is just a class so it can live wherever you want, you can use it as a UI Element or open/close a window by touching a Chest. The inventory itself doesn't really need to change.

[@tonyclx]

​ @Code Monkey I used it in Unity 2018 and 2019 still getting this error CS0234: The type or namespace name 'Universal' does not exist in the namespace 'UnityEngine.Rendering' I am a beginner. I really appreciate your help. All I am trying is to run the exact project you made. I have added nothing to it..thanks

[@CodeMonkeyUnity]

You need to install the Universal RP from the package manager

[@lucasgiffuni6267]

Hi, can you do a tutorial of melee attack system with the sword?

[@CodeMonkeyUnity]

Yeah I covered it here kzbin.info/www/bejne/d4nOkqSNaKpshas

[@Bartek-6772]

How you get grid for pathfinding? You use GridPathfinding.Instance is it automatic calculating grid or you just defined it manually? (i am only interested in method not how script works)

[@CodeMonkeyUnity]

It's using A* Pathfinding which I covered here unitycodemonkey.com/video.php?v=alU04hvz6L4

[@Bartek-6772]

​@@CodeMonkeyUnity i know that but how do you set not walkable area? In video that you linked you set the grid at runtime. But in this video it looks like automatic process. You just use GridPathfinding.Instance... without setting the grid before start. Do you have script that sets it manually or you just didn't show setting grid in video?

[@FergoniusYeet]

Is there a way to implement this pathfinding with an isometric tilemap?

[@CodeMonkeyUnity]

You can have isometric visuals while keeping a flat logic grid. Just need to do calculations when converting positions into grid positions.

[@umairmalik6480]

Please make a video on interface also

[@adeled8833]

It didnt go through the wall, my player rotated when touched walls like crazy for some reason with the first (rb) method

[@abuUthmani]

7:28 isn't GetComponent in update methods a bad way to get a reference to the script you want? it is said to be expensive and not recommended, i think you should also mention that in your tutorials.

[@CodeMonkeyUnity]

Yes, it is only used in the demo to showcase hotswapping the components while the game is running. In a proper game you would cache the component.

[@LekoKeller]

Can someone help me? I'm having an error with the MovePositionPathfinding script I think the problem is at the line "pathVectorList = GridPathfinding.instance.GetPathRouteWithShortcuts(transform.position, movePosition).pathVectorList;" The error I'm getting is: NullReferenceException: Object reference not set to an instance of an object Thanks in advance

[@CodeMonkeyUnity]

Use Debug.Log to find what is null unitycodemonkey.com/video.php?v=5irv30-bTJw

[@Michal005]

How to change this scripts by code???

[@tiagodarkpeasant]

do you have gravity set to 0 by default ?

[@CodeMonkeyUnity]

Yes I set it to 0 since I'm working in a Top Down perspective.

[@nbdy296]

with the direct mouse movement, my character stutters around the target postion instead of just stopping... any clues why ?

[@asemon007]

I'm suffering the same problem

[@nbdy296]

@@asemon007 I worked it out eventually after watching the rest of the vid. At 15:45 when he shows the pathfinding movement he uses a threshold to determine when to stop movement (line 26). I used that in the direct movement too and it fixed it.

[@asemon007]

@@nbdy296 Thanks man!

[@CodeMonkeyUnity]

Yes, depending on how fast your unit moves you need to adjust the distance for it to stop moving.

[@byeileft894]

Can u do these coding but with good 3d models cause I want to try to make a pokemon based game

[@CodeMonkeyUnity]

Pretty much all the code works in 3D and there are only some small changes needed. Instead of using Rigidbody2D use Rigidbody. Instead of SpriteRenderer use MeshRenderer

[@kiss_fish]

Im a bit confused - how does the pathfinding work in this project - all your pathfinding tutorials work with grids but here you just have objects in a scene? Or do you have a tutorial covering this?

[@CodeMonkeyUnity]

There is a Pathfinding grid being used, it's just not visible.

[@kiss_fish]

But how did you make the nodes around the wall unwalkable

[@kushovu]

Where is the link to the video that u told at 5:22, the Animation system, i cant find it

[@CodeMonkeyUnity]

It's this one: kzbin.info/www/bejne/Z2LGaqWNh9SngJo

[@kushovu]

@@CodeMonkeyUnity got this haha thx for all!

[@SanderVerveer]

Would it be posible to post me "Character_Base " content, stuck on the part that is untill now not in the video, with kind regards. Sander

[@CodeMonkeyUnity]

That class is just responsible for rendering/animating the character, you can use whatever animator controller you want, it's not directly related to making a modular character system

[@shanjohnkj6851]

Please explain how moveposition - transom. Position works its been long time searching for crrt answers

[@CodeMonkeyUnity]

It's simple vector math to get the direction, you do targetPosition - currentPosition and you get the resulting vector between those two points.

[@shanjohnkj6851]

@@CodeMonkeyUnity brooo thankyouuu

[@daltonguthrie3544]

Anybody else having issues with the GridPathfindingSystem in the MovePositionPathfinding script? Is there something I need to do in order to have Unity register that Namespace? Assets\Scripts\PlayerControls\MovePositionPathfinding.cs(4,7): error CS0246: The type or namespace name 'GridPathfindingSystem' could not be found (are you missing a using directive or an assembly reference?) This is the error code I'm getting.

[@CodeMonkeyUnity]

GridPathfindingSystem is what I made in the Pathfinding video kzbin.info/www/bejne/l524YWeeq99pgpY But the goal of the modular system is so you can use it with any pathfinding system like the built-in NavMesh kzbin.info/www/bejne/l6WmgJdqpJynfZY

[@daltonguthrie3544]

@@CodeMonkeyUnity I've looked at everything and all I can't anything that should be giving me this issue. I've even downloaded all the project files from both videos and it is still giving me the same error code. Maybe I'm just being dumb but I have no idea how to remedy this issue. I have all the Unity packages downloaded as well.

[@magictimm4090]

When I use the pathfinding script I have an error. I copied the code (PlayerMovementMouse, MoveTransformVelocity, MovePositionPathfinding, plus the interfaces) from the project files in my own project. And I copied the grid scripts too. Any help? I opened a complete new project, add your projectfiles and.... same result. NullReferenceException: Object reference not set to an instance of an object MovePositionPathfinding.SetMovePosition (UnityEngine.Vector3 movePosition) (at Assets/Scripts/MovePositionPathfinding.cs:14) PlayerMovementMouse.Update () (at Assets/Scripts/Player/PlayerMovementMouse.cs:13)

[@CodeMonkeyUnity]

Use Debug.Log to figure out exactly what is set to null

[@magictimm4090]

@@CodeMonkeyUnity First: thanks for your great videos and the support Debug.Log(pathVectorList); is NULL Debug.Log(movePosition); is not NULL (-2.8, -1.7, 0.0) Debug.Log(transform.position); is not NULL (1.8, 0.4, 0.0)

[@magictimm4090]

@@CodeMonkeyUnityI found the problem. I deleted the GameHandler_Setup script and object

[@gamespark3426]

when I use GridPathFinding VS cannot find it and said that "Error CS0246 The type or namespace name "gridpathfindingsystem" could not be found"

[@CodeMonkeyUnity]

That's not a built-in Unity class, it's the Pathfinding that I built in a previous video kzbin.info/www/bejne/l524YWeeq99pgpY

[@gamespark3426]

@@CodeMonkeyUnity understood. Thanks bro.

[@onetruedom8432]

Are Update() methods called at different intervals? After changing my code to be more modular there seems to be a delay in my players velocity changing to zero when I have no keys pressed. --- Before --- PlayerMovement - Update() - Capture Input - FixedUpdate() - Update RigidBody velocity --- After --- PlayerInputsController - Update() -> Call PlayerMovement.SetVelocity() PlayerMovement(RigidBody) - SetVelocity() -> Sets Parameters for use by FixedUpdate() later - FixedUpdate() -- Update RigidBody velocity Any reason why this feels slightly slower? I feel like this shouldn't be a noticable change.

[@CodeMonkeyUnity]

Update(); gets called on every frame whereas FixedUpdate(); is on a fixed interval which is also when the Physics system runs You can set the velocity on Update(); and it will be applied on the next FixedUpdate(); That code doesn't seem like it would be any slower, is your rigidbody set to interpolate?

[@onetruedom8432]

@@CodeMonkeyUnity Yeah my rigidbody is set to interpolate, I'll have to come back and give this another look. Thanks for the reply anyways