Procedural Terrain Generation with AdvancedRandom

Hi guys,

Im doing a procedural terrain generator in C3, wich works perfectly, but as im using AdvancedRandom plugin, the noise output is creating my islands randomly.

The problem is, i want centered islands, always generate terrain form a center point.

Ive seen other people, in other game engines, using radial gradients, to "lock" the noise to a center point, but i dont know how to port it to Construct.

These are screenshots from my current generator:

And what im trying to achive is this:

Its from this web: medium.com/@travall/procedural-2d-island-generation-noise-functions-13976bddeaf9

How can i generate this type of gradient:

So i can substract it from the noise, like in this image:

Thank you!

You don't actually need that image to solve the problem. All you need is to know the distance the pixel is from the center of the image. Here is a simple project built off the Noise Textures built in example:

drive.google.com/file/d/1A1jzWoIMUB5N3A0cF1GmfRzEnMWsHHn9/view

Notice the event the sets the pixel:

-> System: Set NoiseValue to (AdvancedRandom.Classic2d(XIndex, YIndex)

- (distance(XIndex, YIndex, LayoutWidth ÷ 2, LayoutHeight ÷ 2) ÷ 400))

× 100

I am subtracting the distance from the center:

distance(XIndex, YIndex, LayoutWidth ÷ 2, LayoutHeight ÷ 2

divided by 400 which is the max distance of an edge to the center in this example:

(distance(XIndex, YIndex, LayoutWidth ÷ 2, LayoutHeight ÷ 2) ÷ 400))

It's super simple but kind of math heavy. Hopefully it helps though. Good luck with your project.

You don't actually need that image to solve the problem. All you need is to know the distance the pixel is from the center of the image. Here is a simple project built off the Noise Textures built in example:

https://drive.google.com/file/d/1A1jzWoIMUB5N3A0cF1GmfRzEnMWsHHn9/view?usp=sharing

Notice the event the sets the pixel:

-> System: Set NoiseValue to (AdvancedRandom.Classic2d(XIndex, YIndex)

- (distance(XIndex, YIndex, LayoutWidth ÷ 2, LayoutHeight ÷ 2) ÷ 400))

× 100

I am subtracting the distance from the center:

distance(XIndex, YIndex, LayoutWidth ÷ 2, LayoutHeight ÷ 2

divided by 400 which is the max distance of an edge to the center in this example:

(distance(XIndex, YIndex, LayoutWidth ÷ 2, LayoutHeight ÷ 2) ÷ 400))

It's super simple but kind of math heavy. Hopefully it helps though. Good luck with your project.

Hi InDWrekt, it worked perfectly.

I got everything working as i wanted, take a look.

Exactly what i wanted, and it worked with just a few modifications, to work with my generator.

Thank you very much, very helpful ^^

Dude, that looks great. Glad I could help. Good luck with your project.