PERLIN NOISE in Unity - Procedural Generation Tutorial

Let's have a look at Perlin Noise in Unity.

More on procedural generation:

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Edited by the lovely Sofibab.

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► All content by Brackeys is 100% free. I believe that education should be available for everyone. Any support is truly appreciated so I can keep on making the content free of charge.

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♪ Baby Plays Electro Games

[Brackeys]

Hey everyone! Hope you like the video :)

This video is very introductory and doesn't go in depth with stuff like how perlin noise is generated or how it can be layered (in octaves) to give more interesting results. If you want to learn more about this sort of stuff I suggest you check out Sebastian Lague and Catlike Coding. They both have some great resources on this! There is a link in the description for that :)

Stay awesome!

[gamedevbaiyi]

Thank you Brackeys !!! Even though it's a long time since you poseted your last video. The channel still help me consistently. Best luck for you. Whatever now you're dealing with, you get our best hope.

[MaeveFirstborn]

You've got no idea how amazing these videos are.

[veno]

Brackeys, my boi did it again! *Our voices are heard!* I salute you!

Some people me including wanted this, feelsgoodman when it appears on my feed! Love the recent standalone tuts for deeper understanding of Unity3d.

[monishvyas]

I take this moment to thank to Asbjørn Thirslund for all of his videos. I learnt unity by watching your videos. I have been following you since "Make a game series", but I never actually shown my gratitude to you. So A biggg thank you to you for all your tutorials whether it be a small one or a complete series. Thanks to you I myself and many like me are game developers.

[marumisu]

I wish I had a group of Scandinavian friends to make a game with.

[xannydoesstuff]

Brackeys!! You're awesome dude!
I LOVE your content!
Thanks to you I've become a game developer! <3

[paytondugas]

Dude, you're killing it! Literally every time I look something up with the word "Unity" in it one of your epic videos comes up. Keep up the hard work!

[SmleyFce-nvlh]

For anyone who is in 2D and tried using the Sprite Renderer, you can't as it doesn't allow for textures due to overriding them with the texture from the sprite you are using . You have to use something like a quad (mesh filter) with a mesh renderer which will use the created texture directly and then set the material to unlit > texture like Brackeys does.

[VoidAshen]

when u write the code and it works in the first go

That moment is heaven

[kristianthaler]

I hope you are still reading comments on this channel because I need to tell you how awesome you are.

[xxDeathStarxx]

Nice. I look forward to the tutorial on procedural terrain generation. Thanks for this.

[AdrienSanctioned]

Thank you!!! This was all I needed to get my procedural world generation working for my game, this was the only thing I was having difficulty figuring out, thanks! :D

[arthurmartirosyan]

Script:
public int width = 256;
public int height = 256;

public float scale = 20;

public float offsetX = 100f;
public float offsetY = 100f;

void Start()
{
offsetX = Random.Range(0,
offsetY = Random.Range(0,
}
void Update()
{
Renderer renderer = GetComponent<Renderer>();
renderer.material.mainTexture = GenerateTexture();
}

Texture2D GenerateTexture()
{
Texture2D texture = new Texture2D(width, height);

for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
Color color = calculateColor(x, y);
texture.SetPixel(x, y, color);
}
}
texture.Apply();
return texture;
}
Color calculateColor(int x, int y)
{
float xCoord = (float)x / width * scale * offsetX;
float yCoord = (float)y / width * scale * offsetY;
float sample = Mathf.PerlinNoise(xCoord, yCoord);
return new Color(sample, sample, sample);
}

[blazeminer]

Wow i am so amazed at how professional your tutorials are let me just say thanks, thank you for these tutorials u go and make these for us and they are amazing i am truly thankfull

[tjkerman]

Instead of putting the generation into the update method, you could just put it into the OnDrawGizmos(). It then allows you to change the parameter. To reduce the calculation amount, you could add a dirty flag with setter on each parameter and only then reproduce a new noise texture.

[IndieMarkus]

Q: "How to procedurally generate in unity?"
Answer from Brackeys: "Call the Mathf.Perlin funktion!"...

Honestly I was expecting a little more explanation of the math behind this rather than just showing one specific usecase of the perlin noise :(

[maldoran]

really high quality content! Found your channel today and already watched A LOT. thank you!

[blitzinbeats]

Great video, been waiting for this for a long time

[coolmatt]

I don't even make games and yet I find this entertaining