random corruption spread (no demon altars destroyed)

[haruka fan]

how does the crimson/corruption keep spreading in my world in the most randomest of places when im constantly getting rid of all of it with the clentaminator. i havent destroyed any altars but it still spreads everywhere in areas that should be impossible to spread to.

[just.nuke.em]

Originally posted by stan loona:

it still spreads everywhere in areas that should be impossible to spread to.

Post a screenshot of one of those places and maybe we can advise you.

In general corruption is spread over a 3 block radius, so if anything is corruptable with 3 blocks of an already corrupted block, it will get corrupted. Stuff that is 4 blocks away will not. Walls will not spread the corruption, but they will get corrupt (just ignore them).

If you have corrupt grass blocks anywhere, corrupt thorns will grow on them and have their own 3 block radius of corruption effect. Typical way to stop this in a hellevator is to have wood all along the corrupt side.

[Dan Ironsight]

Originally posted by just.nuke.em:

If you have corrupt grass blocks anywhere, corrupt thorns will grow on them and have their own 3 block radius of corruption effect.

Thought it was 6?

[Wickerbottoms]

When a world switches to hear mode new corruption in two ways, 1 the large diagonal strip straight thought the world, and 2 randomly placed leaves of corruption underground.
The seconds one there might be the problem u are having.
Also corruption spread isn't effected by breaking Deakin alturs.
Hope this helps

[just.nuke.em]

Originally posted by Captain A. Wickerbottoms I:

When a world switches to hear mode new corruption in two ways, 1 the large diagonal strip straight thought the world, and 2 randomly placed leaves of corruption underground.
The seconds one there might be the problem u are having.
Also corruption spread isn't effected by breaking Deakin alturs.
Hope this helps :terraria:

Yes on the diagonal, no on the "randomly placed leaves" thing, that does not exist. You only get randomly placed blocks when you break altars (25% chance to spawn one). And yes, this will affect spread.

Originally posted by Dan Ironsight:

Thought it was 6?

Nope, it's 3. You can test it yourself by placing a ebonstone block all by itself and then placing a corruptable block near it. Test different spacings and you will see what kind of gap you need to stop the spread. Something like this:
https://steamcommunity.com/sharedfiles/filedetails/?id=1336611638
The one on the left has the stone at the 4th tile in the radius and it never turned. The other two (middle = 3rd tile radius, right = 2nd tile radius) got corrupted over time.

[Saver Sigonith]

Originally posted by stan loona:

how does the crimson/corruption keep spreading in my world in the most randomest of places when im constantly getting rid of all of it with the clentaminator. i havent destroyed any altars but it still spreads everywhere in areas that should be impossible to spread to.

The most likely scenario from your description is just that you've not been removing it thoroughly enough. If you manage to miss a single block of hallow/crimson/corruption somewhere, it'll just grow right back.
Because the spread is based on chance and cave pattern, its path around can look pretty random, and you'll only find part of it.

If you're really sick of it, dig some [3-wide] tunnels you can fire the clentaminator between
[<120 tiles between each], to both block the spread and allow you eliminate all the hallow/crimson/corruption in a region.

[Wickerbottoms]

Originally posted by just.nuke.em:

Originally posted by Captain A. Wickerbottoms I:

When a world switches to hear mode new corruption in two ways, 1 the large diagonal strip straight thought the world, and 2 randomly placed leaves of corruption underground.
The seconds one there might be the problem u are having.
Also corruption spread isn't effected by breaking Deakin alturs.
Hope this helps

Yes on the diagonal, no on the "randomly placed leaves" thing, that does not exist. You only get randomly placed blocks when you break altars (25% chance to spawn one). And yes, this will affect spread.

Originally posted by Dan Ironsight:

Thought it was 6?

Nope, it's 3. You can test it yourself by placing a ebonstone block all by itself and then placing a corruptable block near it. Test different spacings and you will see what kind of gap you need to stop the spread. Something like this:
https://steamcommunity.com/sharedfiles/filedetails/?id=1336611638
The one on the left has the stone at the 4th tile in the radius and it never turned. The other two (middle = 3rd tile radius, right = 2nd tile radius) got corrupted over time.

I'm sorry, I wrote that when I was quite tired, I ment blocks not leaves idk where that came from. Tho I didn't know that breaking altars spawns curruption, so thx for that :)

[haruka fan]

sorry for the late reply. i couldnt screenshot it because i used the clentaminator on most of the surface area but i also spotted some crimson in the cloud areas where there's grass??? i'll also post a screenshot of my map soon.

[Saver Sigonith]

If those floating cloud islands happen to spawn in the V-shaped region that is initially crimson/hallowed, they'll be crimson/hallowed too. Though it is VERY rare, crimson/hallow spawned by breaking demon altars can start on a floating island too.

Remember - if you're only using the clenaminator on the surface, it's still crimson/hallowed underground! It'll just grow right back.
If you want to stop it, you're going to have to dig.

[ENCY]

If there are random spots and you want to get rid kf it easily, use the morph feature in TEdit and select purfiy, make the brush biggest, and then cleanse what you see

If there are still corrupted areas, wait for them to grow so you can see them clearly in TEdit then cleanse.
My brother had no idea this was a thibg and now i have blocks of corruption in my world i can't eye out so i have to wait for them to get bigger then eradicate it with the morph purify brush in TEdit.
It's a very useful tool.