How to Procedurally Generate a Perfect Maze (Unity Tutorial)

Рет қаралды 21,788

Күн бұрын

In this tutorial we're going to look at how to procedurally generate a perfect maze.
The project files are available to our patrons here:
► / 84948773
The final script can be found here
► dotnetfiddle.net/krlgdG
Help support our work:
► Patreon: / ketragames
Follow us:
► Ketra Games: www.ketra-games.com
► Patreon: / ketragames
► Twitter: / ketragames
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Introduction - 0:00
Explanation of the Maze Generator Algorithm - 00:11
Creating the Project - 01:00
Creating the Maze Cell Prefab - 02:08
Implementing the Maze Generator Algorithm - 09:05
Summary - 22:06
#KetraGames #LearnUnity #UnityTutorials #UnityTips

Пікірлер: 102

@Ma_cieK Жыл бұрын

This is a fantastic channel, and your talent for explaining how and why things work is truly remarkable. I sincerely hope that you will continue to produce more videos like this one for our community. Your contributions are highly valued and appreciated.

@KetraGames Жыл бұрын

Thanks so much for this comment. It really made our day 😊

@5ld734 11 ай бұрын

This is fantastic and your channel is a gem this is exactly what I and many others needed to start to learn procedural generation

@KetraGames 11 ай бұрын

Thanks very much for this great comment 😊

@HandsOnKnowledge Жыл бұрын

Super excited to see another upload, can't wait to watch the whole thing 😊

@KetraGames Жыл бұрын

Thanks for this comment 😊

@HandsOnKnowledge Жыл бұрын

@@KetraGames and thank you for making such quality content 👍

@mrB25N Жыл бұрын

Wow I needed a way to create an array of buttons, just the way you created the array of Maze cells, this is incredible timing! Thank you so much for this

@KetraGames Жыл бұрын

Glad it will be helpful, thanks for this comment 😊

@marcoseliasmep Жыл бұрын

Wow the best tutorial about this subject! Thanks a lot for this video! It’s better than many complete courses that I’ve seen.

@KetraGames Жыл бұрын

Thanks so much for this comment 😊

@yours_indie_game_dev Жыл бұрын

to those asking implement entrance/ exit to the maze you can garb all the outer walls as such //if x=0 first row get the leftwall //if x==row-1 last row get the rytwall //if z=0 first colunm get the backwall //if z=cols-1 first colunm get the frontkwall add them to a list an perhaps find an index and clear 2 walls for entrance n exit x,and z being the index of the cell row and colums being the width and the depth as per this tutorial

@ChrizSee Жыл бұрын

Great tutorial! Thank you!

@KetraGames Жыл бұрын

Thanks for this 😊

@ItachiX9 Жыл бұрын

That's awesome. I wanted to learn about maze algo.

@KetraGames Жыл бұрын

Glad it was helpful 😊

@runjimrun Жыл бұрын

This is interesting! I'm working on a top down shooter with a random generated city, so this can come in handy

@Rahulsingh-theraha Жыл бұрын

U might need to use wave function collapse instead of dfs algorithm

@runjimrun Жыл бұрын

@@Rahulsingh-theraha Awesome, will look into this!

@gazzer4461 Жыл бұрын

Thanks Ketra! I always wondered how mazes were created in software.

@KetraGames Жыл бұрын

Glad it was useful 😊

@amypellegrini1732 3 ай бұрын

Great tutorial! 5 stars

@philberex 2 ай бұрын

Thank You for this great video!!

@KetraGames 2 ай бұрын

👍😊

@Blossomanukposi Ай бұрын

This is sooo cool!!!

@KetraGames Ай бұрын

👍😊

@weckar 11 ай бұрын

This is nice. However, this method tends to create a single long main path with relatively short side branches. To prevent that, you can iterate over a shuffled queue of all cells with unvisited neighbors instead. In addition; at the end of the process, you can knock down a couple extra walls at random to create loops and overall a less straightforward to solve maze.

@gasperkrevs5079 9 ай бұрын

And how would one modify this code to create such effect? If you know by any chance. Thank you in advance.

@weckar 9 ай бұрын

@@gasperkrevs5079 I would have to rewatch. I'll get gack to you.

@gasperkrevs5079 9 ай бұрын

@@weckar Thabk you very much. If you have any idea how to do it, please let me know otherwise no problem

@gasperkrevs5079 9 ай бұрын

I did manage to get a random maze so that is not jsut a single line, but now I want to know if it is possible to create a maze so that when you click on Play, it doesnt say Maze Cell (Clone) but instead the whole maze becomes a game object that I can move around and stuff like that. If you know what I mean?

@ButterDog11 7 ай бұрын

@@gasperkrevs5079 Fetch all the MazeClones and assign them a common parent gameobject, now you can move them together

@CongTuSoi 10 ай бұрын

Hi, great tutorial! One question I have is how would you make it so that the maze is spawns at a determined position rather than (0, 0, 0)?

@zeshufuno9177 Жыл бұрын

Great tutorial!But I want to ask there is way to make a maze entrance and exit?

@kettu9943 2 ай бұрын

You can basically put both at opposite ends because every tile can be reached from everywhere

@runjimrun Жыл бұрын

Somehow, my sprites (uploaded from sprite pack, containing multiple walking animations) cannot be scaled via PPU. It is sliced via cell size, nut I'm unable to change any properties like PPU and filter mode. Any ideas?

@minhkhoa6081 7 ай бұрын

Sorry i have a question.what algorithicm you used in this generate map.

@mostly4real Жыл бұрын

What is this best way to create this maze on a Coordinate that is not 0,0,0? as example: I want to have two different mazes in the 3D Platforming Tutorial for the Player to run through.

@dylanrobinson830 6 ай бұрын

How do you fix the z fighting all the walls are too big making the pixels clash

@SyedHammadZada 11 ай бұрын

How we can spawn collectibles within the maze path at every scene load? How about enemy ? Can we do path finding within the maze path?

@_Garm_ Жыл бұрын

thank you :D

@KetraGames Жыл бұрын

👍😊

@W0rldbuilder Жыл бұрын

Wonderfully done! ♥ Might I suggest an addition to this system, wherein we can set a number of larger prefab rooms that get dropped into the maze (for enemy spawns, treasure, etc.)? Or would that be much too complicated?

@KetraGames Жыл бұрын

Hi, thanks for the suggestion 😊

@ButterDog11 7 ай бұрын

Great tutorial, any help on finding dead ends in the maze?

@hamzamehmood9483 Жыл бұрын

Thanks

@KetraGames Жыл бұрын

👍😊

@henrysteven137 Жыл бұрын

yo this is so cool

@KetraGames Жыл бұрын

Thanks for this comment 😊

@chrislagos44 24 күн бұрын

Wow! Sweet stuff! Unity is awesome 🎉 would be nice to add code to the script to create a second floor. So, when the algorithm stops. It's time to move to second floor but there needs to be a connection to the floor below. Stairs or ladders! Then when you set y= 0 just make it y = 1. I will try it out

@Madkevop7 6 ай бұрын

When the walls overlap, how to fix the corner walls z fighting

@Stranded13 11 күн бұрын

How do I change where the whole maze generates as it’s only starting on 0, 0

@bogumiwyrwa216 5 күн бұрын

Hello, Greate tutorial :-) I have one question. Why you used values 1 and 10 in Random.Range(1, 10)?

@rainbowslime__ Жыл бұрын

where u maze quit?

@AlaaMasalmeh Жыл бұрын

Great tutorial! please upgrade this to First Person or Third Person maze escape with minimap

@KetraGames Жыл бұрын

Thanks for the suggestion 😊

@Gilgamesh_king_of_heroes Жыл бұрын

@@KetraGamesthx for the video I'm already thinking 3d maze shooter😮😮

@Stranded13 11 күн бұрын

I’m making a maze horror

@chrislagos44 24 күн бұрын

Just by changing the size of each cell you will have a more open sort of maze. Like Wolfstein 3d

@ButterDog11 7 ай бұрын

Never mind I got it. For anyone who wants to know: Create a variable inside your mazecell script to store the number of active walls of that cell. Now in the maze generator script fetch all the cells who have only 3 active walls, as dead end cells are the only cells with 3 active walls.

@KetraGames 7 ай бұрын

Glad you got it sorted. Thanks for sharing 😊

@greg-b1i 18 күн бұрын

how to fix the overlapping walls because they start flickering

@Sunil_Sable 5 ай бұрын

I'm here after watching GamesofVab video😂

@SpeedyGamerTV Ай бұрын

Is there a way to make it so the mazecells are 6 meters?

@KetraGames Ай бұрын

Hi, if you watch the next video in the series we show how to increase the size of the cells - kzfaq.info/get/bejne/mrV5YLFjtrzQqWw.html. Hope that helps 😊

@bobbydharrell 6 ай бұрын

This Tutorial was amazing, Thank you. 1 Question though. I wanted to scale up my MazeCell Prefab to be twice as big so it would not be so cramped. But then it broke the Maze Generator .. how do i adapt the Maze Generator to handle any Cell size? Thanks in advance!

@magic00squirrel 4 ай бұрын

Did you figure out how to fix this?

@bobbydharrell 4 ай бұрын

@magic00squirrel yes, I went to the unity forums and another developer helped me out.

@aniellorenci7984 3 ай бұрын

@@bobbydharrell could you link what helped u or tell me what u did pls

@sleazybot 9 ай бұрын

I'm trying to add to this maze an object player(first person) but it doesn´t appears or fit into the maze, anyone haz any suggestion for me

@dannchap9946 7 ай бұрын

Your player has to be smaller than the cell prefab size. Just shrink the player object until it fall into the maze. Hope this helps.

@jovonsanon1 Жыл бұрын

If I wanted to make the physically cells bigger How would I do that? Simply making the prefab parent object larger on the scale is causing problems ?

@KetraGames Жыл бұрын

Hi, you would need to make some adjustments based on the scale of the prefab. So, for example if your pefab is 2x2 you would need to multiply the x and z positions by 2 when creating the initial grid. Hope that helps 😊

@someoneiguess23 8 ай бұрын

@@KetraGames how would you do that?

@user-dr5nt2is7f Жыл бұрын

It would be the same concept for the 2D maze generation right?

@KetraGames Жыл бұрын

Hi, yes the same concept would work for 2D 😊

@ricardocreemers 8 ай бұрын

I got an error with the OrderBy methode (row 44). It thinks it's a methode of the IEnumerator. I used using System.Linq; But it doesn't recognize it.

@bonaIdeaPro 6 ай бұрын

Check if you wrote the right code here(should be IEnumerable, and not IEnumerator) : private IEnumerable GetUnvisitedCells(MazeCell currentCell)

@kamiii_samaa 4 ай бұрын

@@bonaIdeaPro THANK YOU SO MUCH

@tiqosc1809 Ай бұрын

dont understand how the recursive function work to pervent stuck in dead ends

@ThiagoPrego 8 ай бұрын

Thank you so very much. May the Lord bless you always.

@quetsche Жыл бұрын

Hi ! What algorithm does it use ?

@KetraGames Жыл бұрын

Hi, it uses randomized depth-first search 😊

@quetsche Жыл бұрын

@@KetraGames thanks!

@-Toon- 11 ай бұрын

What is the best way to scale the size of the cells without messing up the generation?

@KetraGames 11 ай бұрын

Hi, one way you could do it is to add an empty game object that you scale up or down. Then when you Instantiate the maze cells you can specify this as a parent. Hope that helps 😊

@-Toon- 11 ай бұрын

@@KetraGames this works to scale the cell prefabs, but the maze size/spacing between cells remains the same which results in the cells overlapping

@KetraGames 11 ай бұрын

Hi, this is because when using Instantiate it sets World position rather than the local position. You can fix this by adding the following line _mazeGrid[x, z] = Instantiate(_mazeCellPrefab, new Vector3(x, 0, z), Quaternion.identity, _parent); _mazeGrid[x, z].transform.localPosition = new Vector3(x, 0, z); You'll also need to use local position further down in the algorithm private IEnumerable GetUnvisitedCells(MazeCell currentCell) { int x = (int)currentCell.transform.localPosition.x; int z = (int)currentCell.transform.localPosition.z; Hopefully this should get it working 😊

@PolyVR2 9 ай бұрын

it doesn't let me drag the maze cell into the slot, how do i fix this?

@KetraGames 8 ай бұрын

Hi, have you made the maze cell a prefab by dragging it into the Project Panel?

@PolyVR2 5 ай бұрын

@@KetraGames it works now :D. but one question. how do i change the size of the maze? like can i make the walls in the prefab bigger? or do i have to do something different?

@johnbai842 Ай бұрын

facing a little issue here 😭My maze cell won't be generated for some reason

@raelroque5595 Жыл бұрын

when are you going to do something more advanced? like interaction with or between npcs, quest system, etc.

@KetraGames Жыл бұрын

Hi, thanks for the suggestions. We'll add them to the list of future videos 😊

@Vastlee Жыл бұрын

Is there a reason you're still using Visual Studio 2019? 2022 is really great.

@KetraGames Жыл бұрын

Hi, we stuck with 2019 as that was what was installed with Unity last time I checked. Now Unity 2022 is in LTS we'll probably upgrade to that and Visual Studio at the same time. Thanks 😊

@ItsCrucible Жыл бұрын

This is amazing! But, can you make a tutorial for it to be infinite? Like, Backrooms stuff I guess? I am making a horror game and I need an infinite maze.