How To Trim Your Minecraft World! ▫ The Minecraft Survival Guide (Tutorial Lets Play) [Part 123]

Hello everyone my name is Pixar IFS and welcome back to the Minecraft Survival Guide I hope you guys are having a good day today’s tutorial is going to be a bit more of a technical one but not technical from an in-game gameplay perspective technical from more of a world management perspective because

Minecraft 1.14 is due to release this week if everything goes to plan its going to be releasing on Tuesday and so this episode which is coming out on Monday is going to deal with a little bit of how you can prepare your world for Minecraft 1.14 or perhaps if you’re

Watching this in future prepare it for whatever updates may be coming down the road specifically we’re going to be looking at how to prune out unnecessary areas of your world or areas where you haven’t built anything you haven’t done too much exploration but maybe the chunks have been loaded at some point

And so we don’t have the opportunity for new terrain to generate there and in terms of this next update minecraft 1.14 is not adding much in the way of new terrain hasn’t really added much in the way of new biomes but there are a couple of exceptions to that

The first is bamboo forests which are going to be generating in jungles now as you’ll have seen elsewhere in this series jungles are a little bit few and far between when it comes to biome finding a lot of people you know if you get lucky you will find a couple of

Jungles in your world relatively quickly but a lot of people find it difficult to find a new jungle when they need one and in this case I’ve already explored my world to the extent that I’ve found several jungles that I don’t really plan on returning to it just happens that

I’ve loaded them in on the way to exploring towards something else some other objective for example I have a he jungle that I actually want to go to more regularly that’s over by the Mesa and megataiga biomes that we discovered a long time ago actually but I also

Found a jungle on the way to the woodland mansion that we explored in episode 59 and unfortunately that means that those chunks now that they’ve been loaded cannot generate a bamboo forest because they already exist in the world and the Minecraft isn’t just going to wipe the terrain clean and replace it

With some of the new features because it doesn’t know whether or not you’ve built there and in the event that a bamboo forest did suddenly generate in the middle of the jungle it could wipe out the stuff that a player has already built so the way minecraft works is that if chunks

Have already been explored that terrain stays there the unfortunate side effect of that of course is that none of our jungles are going to generate a bamboo forest and bamboo is a resource that I want to do a little bit with in Minecraft 1.14 because it is useful for

Scaffolding blocks you can use it to feed pandas there are all kinds of uses for bamboo I also want to make an episode about farming it bamboo is going to be quite difficult to find if we don’t find a fresh jungle and yes I could find a jungle which would now be

More like twelve thirteen thousand blocks away from my current spawn point or alternatively I could do something a little bit different and prune the chunks that I haven’t actually done anything with the jungle on the way to that woodland mansion the other jungle that I found towards the southwest I

Think could also go that way we can strip down our world so that it is a little bit more streamlined also so it takes up a little bit less space on disk and we can also give it the opportunity to generate new terrain and there are two other things really which I’m

Interested in pruning down the world for two other things which are going to be generated along with the terrain in this new update the first of which is villages and villages are actually going to have a completely different structure in the new update so I would like to

Keep some of the old villages around the ones that we’ve heavily explored like the one that I showed you guys how to mob proof and the one where we found Mendelsohn the mending villager but I would also like to trim out the chunks outside of that the ones that I’ve just

Flown over on the way to getting to a desert temple or maybe a tiger biome and I want those to be able to generate freshly with the new village structure again if we went further out it would be possible to generate new villages in different chunks but for now I think

It’s going to be best if we actually trim down the outside of this world the last thing on the list is pillager outposts which I’ll go into a little bit more once we actually get to see one but they are a new feature of 1.14 which generate along with the terrain they’re

Basically generated structures in much the same way as a village or a desert temple would be and they’re going to be quite fun to find the thing is I want them to be able to be found closer to my base so I think it’s going to be worth pruning some of the chunks

To make sure that pillaging outposts can spawn wherever they would if this was a world we created in 1.14 now deleting chunks from your world might seem like quite a scary concept and it is a little bit I do fully recommend taking multiple backups of your world before you embark

On any of the chunk pruning chunk trimming deleting sections of the world stuff that we are planning on doing today but you don’t need to worry too much about that terrain like sticking out or being weird or being glitched when you reload the world because the way the Minecraft terrain generation algorithm works

It generates all the terrain from the seed number which as you’ll remember we didn’t necessarily input ourselves when we created this world but the seed is always going to be the same number and that’s the number it uses to generate terrain that is always the same or at

Least it has been for several updates now I think the last time terrain generation was significantly changed aside from the changes to oceans was in around Minecraft 1.7 so it would be possible to generate exactly the same world that we have now in 1.14 with no significant changes to the terrain and

As such if we delete chunks of the world then it’s going to be possible for those chunks to completely regenerate with exactly the same terrain they had in 1.13 no seams no weird like sheared off cliff faces you honestly wouldn’t know the difference now over the years there have been several community developed

Tools which have made it possible to edit minecraft worlds in a little bit more fine detail I’m thinking in particular here of mcedit which is a program that was developed a long time ago and has been kind of updated quite regularly since then to allow you to edit regions of your

Minecraft world and it allows you to kind of trim out sections which you know you’ve used gives you a top-down overview of the map and so forth so it makes it easier to see where stuff has been built and where it hasn’t unfortunately minecraft 1.13 changed a

Lot about the way minecraft stores data about the world so unfortunately it isn’t going to be possible to load up a 1.13 world in the current version of mcedit it hasn’t been updated to be compatible with the newer Minecraft world format and as such we have to take a more

Imprecise approach that is going to involve deleting larger sections of the world how large you ask well we’re talking in the region of 32 chunks square so that’s quite an amount and I’m gonna take a few backups of this world and we’re gonna demonstrate exactly how this can be done either aliy recommend

That you do the same once again make backups of your world before you try anything like this because it can lead to you irreparably losing sections of your world if you do not have a backup and you do this wrong but without further ado let’s go into a copy of the

Minecraft Survival Guide world and I’ll show you what I’m talking about so here we are in our world select screen I have created a direct copy of the Survival Guide world as you can see I’m recording this on Sunday we’ve done it around midday and I’ve renamed the

Folder which is the line that appears there the world safe folder chunk delete test and I’ve edited the name of this to make sure it says chunks deleted so that I don’t accidentally load up this world it’s the main world and continue playing it and so forth but as you’ll see fairly

Soon it will it will become clear that this is very obviously not the Survival Guide world because what we’re going to do is delete large areas that we’ve already built up in to show you exactly what the effects of this thing we’re about to do us so let me load up this

World and as it is right now you will see virtually no difference I am going to put myself in creative mode remember this is a test world so this isn’t my main Survival Guide world I’m going to go game mode creative like so and we can fly up into the air and

You can see around us of course we have built a lot of stuff in this area this is the area around my player spawn point but if we put the f3 coordinates on the screen and fly out in this direction we will reach a point where we get to the

Zero zero coordinate and that is basically the centre of the world as far as world generation is concerned not as far as the player spawn is concerned but about here on this little section of the swamp once we get to about let’s say here and then back this way a little bit

Here okay we are at the zero zero coordinate and you’ll notice a couple of things about the coordinates section there it will say we’re standing on block zero chunk zero fifteen zero and zero three that right there is a set of numbers that we’re going to be paying a lot of

Attention to in this episode note that if I step to the right now we’re in minus one and we’re in block 15 of this chunk remember chunks are 16 by 16 areas so the number on the left there where it goes from 0 to 15 is tracking what block

We are on within a chunk and the right-hand number is checking which chunk we are in in the world so we are in chunk minus 1 3 0 here were in chunk 0 3 0 there this is all going to become very relevant in a minute but what I’m

Gonna do is grab some emerald blocks out of the creative inventory and place them in a 2×2 square here I’m actually gonna switch this one out for something else let’s make it a diamond block as an examples so this is the very corner of a set of chunks that will expand 32 chunks

In each direction that way and that way not this way in this way only to the east and to the south because that is the positive coordinate for both the X and z coordinates and that is part of the section that I am about to completely delete from this world to

Demonstrate world deletion now if we go this way about 32 chunks it’s actually going to reach the the chunk data is going to say 31 when we get up to this spot it’s actually gonna bisect straight down the castle here I think and it’s about in the middle of this river here

Or sort of towards the bank of the river so there we are 31 and if we go over here that’s where we get to minus once so about here is our other chunk boundary we got to be placing a diamond block there cuz that’s the block I think

We are going to end up deleting and we’re gonna be placing emerald blocks around the outside here in that formation you don’t actually need to do any of this by the way this is all for demonstration purposes to show you exactly where I think this chunk is

Going to be deleted so it’s really gonna cut down most of the castle here right now we’re going to go out of this world we’re gonna save the game and we’re going to go into the file system on my PC where I’ll be able to show you

Exactly where the region data for your Minecraft world is stored welcome to my desktop and right now we’re looking at the Minecraft saves folder which you can find by just finding the Minecraft folder and opening saves here you can see we’ve got a few different

Worlds in here we’ve got my 19 W 14 B snapshot test world my creative test world the main Survival Guide world which we will not be touching for the purposes of this tutorial the chunk delete test world which we are going to be using heavily in this tutorial and

Then a survival guide the zip folder where that’s actually a backup of the main Survival Guide world I actually have this backup saved in a couple of other places right now because I’m really paranoid about losing any of it but here we are so we’re gonna go into

The chunk delete test folder and you’ll see three different folders here that we want to focus on the first of which is region which contains all the map data for the overworld and then there is dim one and dim -1 which contain the map data for the end and the nether the

Minus one if you think about it it’s like below the overworld and the dim one is above the overworld M stands for dimension in this case so it’s basically the data for the end the data for the nether and region is the data for the overworld open these up and you’ll find

A bunch of mca files these are stored in a file format called anvil which is basically how minecraft remembers all of the terrain all of the stuff you’ve built all of the stuff that’s generated in your Minecraft world and what we’re gonna do is delete this first file here

Which is going to be quite a dramatic change to the world because that is region 0 0 and we’ll go into how to interpret the numbers attached to these files in a minute but for now just think that this right here represents the 0 0 point that we just marked out with those

Emerald and diamond blocks a couple of minutes ago and that goes 32 chunks in positive x-direction and positive z-direction to demonstrate exactly what that means I’m gonna delete this file now and we’re going to go back into minecraft and open up the chunk delete test world again and this is probably

Going to take a second or two to load up because it’s having to regenerate the chunks of the world there we go it’s preparing the spawn area it’s taking a few seconds to think about this because when we log in you will notice that everything we have built in this area is

Now gone the transition is seamless aside from the fact that we’ve clearly built half a castle over here and the other half is now missing but you’ll notice the terrain isn’t carved up or anything like that it’s reverted to exactly what it was when the world began and boy oh boy does this

Place look a little bit different let’s go over to our diamond block markers so I can show you exactly where those went there we go the corner that we built with these emerald blocks is still there because each of those was outside of the region we just deleted but the diamond

Block we placed there is gone meaning that was just inside the region we deleted and 32 chunks in each direction that way and that way has now been cleared let’s quickly fly over to our other marker just so I can demonstrate the farthest reaches of this particular

Deletion and there we go as you can see the same thing has happened here those three emerald blocks are still there because they were outside of the boundary of what we’ve just deleted and the diamond block is gone because that was the last block in this 32 by 32 area

That we have just surgically removed from the world and as you can see we’ve deleted an absolutely massive area 32 chunks is a 512 by 512 square plus obviously all of the heights involved in that so 256 blocks up and down is the area that you delete if you delete one

Of the region files from your world folders so you need to be absolutely sure that nothing in those areas has been built in if you want to delete them from your world and as such it’s gonna take a little bit of doing just to make sure that nothing that we’ve done in the

Various project of this series is going to be touched if we don’t want it to be we also have to figure out which of those MCA files in our region folder relates to which sections of the world but thankfully with a little bit of maths it’s actually relatively

Straightforward to do back on the desktop I’ve opened up the chunk delete test region folder once again and you can see that the 0.05 here has actually returned to the folder that’s actually been regenerated when we loaded up the world because that region of the world still exists and still gets loaded when

We reload the world it just doesn’t contain any of the stuff that we’ve built the toreno everything still exists obviously it hasn’t just left a giant void hole in the world because minecraft regenerated the terrain if you’ll remember when we were standing on the zero zero coordinate and facing south

Looking at positive x and positive Z coordinates that was the area that we just deleted that encompasses the whole spawn area the farmhouse the farm land all of the industrial area and half of the castle and so forth now we’re going to be deleting everything that’s on the right-hand side of that

Looking towards the negative x coordinate and for that we need to find this region here region -1 0 and now we can take a look at the numbers attached to these files because these are in fact relevant to their position in the world the number on the left is the

X-coordinate and the number on the right is the z coordinates remember that these regions are working in 512 square areas 32 by 32 areas if we delete that from the world now load up minecraft and take a look at the world once again you’ll find that basically everything in

Founders Forge has now been deleted because we deleted the region a 32 by 32 block area encompassing everything to the west of the area we just delete it so now having deleted that minus-10 region if we load up the world once again again it’s taking a while to load

Up the spawn area and as you can see everything in the swamp including the hot-air balloon the rest of the castle over there has been deleted everything in founders Forge is now gone we’ve managed to delete everything looking towards the negative x coordinate and as we can see if we look

At our little emerald block markers down here the one which was here has been deleted as part of this region which is deleting every block in a 32 by 32 area looking towards the west but staying within the positive Z coordinate let’s now use an example that’s sort of out

There on the peripherals of what we’ve explored let’s take a look at the woodland mansion which we raided in episode 59 let’s teleport to the coordinates of that which if memory serves should be around minus 4500 and 5000 ish obviously we need to put a y-coordinate in there

I got it wrong it was the other way around it was 6000 minus 4500 here we go so this is the woodland mention that we’ve raided in the past that’s going to spectator mode so I can phase through the walls here and I will show you where

We have locked up those of indicators in there dirt cells they should be around here somewhere yep there’s one so this is definitely the woodland mansion that we have raided before and still some stuff spawning around here there’s even some mob drops on the floor look and yeah there are definitely some torches

Around here that we have play our selves so this was the Woodland mansion that we rated in episode 59 and we’re gonna look at exactly how to delete this area and how to figure out where in the world as far as our region data this one is so let’s take a look at

The coordinate data we’ve got on the screen right there we’ve got chunk 7 to 9 in 368 8 287 we can ignore the 8 in the middle that’s just the y coordinate that’s just like how high up or further down we are we can ignore that for the

Purposes of working out the region itself what we want to do is take the other two numbers either side the 368 and the negative 2 8 4 and divide those by 32 because if you remember we have 32 by 32 regions of the world so dividing

Each of those by 32 will give us the rough region number that we need to figure out exactly where this is in the world so 368 divided by 32 is 11.5 and so if you imagine if we head towards this direction I think yeah there we go that

Number is going down what we actually want to get to is 350 on say 352 if we’re multiplying this by 32 here yes here we go so if you look at the x coordinate here if you look at the x coordinate in the chunk data

This is chunk 352 in terms of positive x coordinate and that is actually 32 times 11 so this is region 11 so when we would look in the regions folder for this we are looking for regions that start with the number 11 now let’s take a look at

The position of this as regards the Z coordinate because if this was being super tricky this mansion might even have generated on the boundary between four different regions of the world so it’s always worth checking both the X and z coordinate just to make sure that we are preserving this entire thing so

Let’s get into the center of this let’s divide 284 by 32 and that’s eight point eight seven five so let’s take a look at 8 times 32 that takes us to 256 so the chunks starting 350 to 256 in this direction and looking towards negative Z and positive x take us basically

Straight across the center of the woodland mansion over here it is roughly in this tour action there you go it’s passing by on our left there and if you add 32 to both of those numbers you get 384 288 which is roughly there now bear in mind that

We might have to do a little bit of tricky maths here because everything starts at a point of chunk zero zero and that sort of counts as the first chunk so generally speaking when you’re doing these calculations it is best to subtract one from each of the numbers

Because you end up with a region that starts at zero zero it ends at 31 31 so that covers a 32 chunk area because a zero zero still counts as like the start of a chunk so what we’re looking at here is 383 287 that’s the outer limit of

This region we’re about to delete here and as you can see as we fly over that’s actually right on the edge of where this woodland mansion has generated so that’s good we can use these numbers to determine the region in the region’s folder that we need to delete so now

We’re looking at chunk 352 256 if you divide both of those numbers by 32 you end up with 11 minus 8 and you would think that was the region of the map we would have to delete but once again there’s a little bit of tricky maths involved here because if you’re counting

Coordinates in the negative directions you need to basically add 1 to the number or I guess subtract 1 if we were thinking in negatives but what we’re looking for here is actually region 11 minus 9 now because of the numbering conventions of this folder it’s counting

These in a bit of a weird order because you’re looking at 10 at minus 10 and then minus 10 10 it just gets a little bit confusing here but what we’re looking for is the 11s down here and as you can see here we have 11 minus 9 that

Is the region we’re about to delete and that is because if you’re looking at the coordinates here the negative numbers are all going to start at minus 1 because negative 0 isn’t a thing so it stands to reason that 8 regions out from this negative 1 region at the centre of

The world is going to be negative 9 so basically you’re subtracting 8 from negative 1 if you’re going in a negative direction I’m sorry if the maths in this is absolutely mind-bending trust me it does make sense and ultimately if you’re not sure how this all works if you’re really not sure how

To calculate some of this stuff it’s worth it to just take a bunch of backups and do a little bit of trial and error deletion and find out exactly what resets the worst that can happen is you’ll just need to restore the world from a backup and everything will go

Back to how it was before and then you can try again just make sure to keep making copies and make sure to keep your backups separate now we’re going to delete region 11 – 9 here we’re going to log back into the world so I can demonstrate and you can see this region

Is taking a little while to load up once again because if we fly out in this direction we should get to our woodland mansion again and it’s going to look a little bit different than it did before and as we fly around these hallways you will notice that there are no more dirt

Boxes there are no more torches placed around in fact I think there may even be some Evo kurz if we go up to the upstairs floors yes there you go there’s one considering that we killed all of the Evo cos when we were last here that is pretty definitive proof that they are

Back in action and minecraft has actually completely regenerated the terrain here which includes respawning all the mobs that spawn as part of mansion generations so that is pretty definitive proof that we have deleted the right region here while we’re here by the way I may as well point out

Something that people mentioned in the comments of the woodland mansion raid video and that’s that these illegitimate of wool at the top of the staircase often generate secret rooms behind them that you can only get to by going through the wool over here or by landing

On the roof and going in from the outside the reason I didn’t demonstrate this when I raided this woodland mansion is because this one didn’t have one it doesn’t actually generate behind there at all and as you can see that is just a window that leads to the outside

Now this mansion does actually have a secret room but when I raided it I thought it was completely empty because as we can see in here we have a bedroom on this side and then you go through the wall here and there is no loot in this

Room there are no chests anywhere on the floor and so I thought it’s probably not worth showing this room at all considering that there is no loot in it saying there’s a secret room and then showing you that there wasn’t anything there didn’t seem all that exciting however something that I didn’t even

Know about these woodland mansions is that there is a secret attic base above this room where two chests are stored and that is something I’ve never encountered in these woodland mansions before so it didn’t even occur to me to check I can’t actually look in these right now because the loot tables

Simply haven’t generated they don’t generate until you open the chests in survival or in creative so I can’t look at them in spectator mode but you can bet that I will be back to this woodland mansion and I will check those chests whenever we can now so far this

Demonstration has been all about deleting chunks that we’ve already built stuff in but that is basically the opposite of what I want to do here what I want to do is figure out all of the regions of the world which I have built something in so I can avoid deleting

Those from my list of available map regions so what I’m going to do is spend a bit of time off-camera marking down exactly which regions of the world I’ve visited which regions I’ve built stuff in and which I have just completely flown over on my way to a big landmark

Like this wooden mansion or maybe an ocean monument or something like that I will figure out which regions we can delete from the world folder and then we’re going to delete them all and eventually we’ll be able to return to these places once they generated some new things like bamboo forests some new

Styles of villages and some pillager outposts and to help me figure out what those regions are I’ve actually figured out a calculator of sorts here in a Google Docs spreadsheet which I’m going to make available through a link in the description it is going to be read-only

So that people don’t come in here and vandalize this document but you should be able to copy and paste it into your own Google spreadsheet if you want to figure out exactly how this works so what we’ve got here is four calculators which can calculate a set of coordinates

Based on a region number in this case a positive x coordinate a positive Z coordinate a negative x coordinate and a negative Z coordinate and what this allows us to do is figure out which coordinates are covered by region files in our region folder so let’s say I

Encountered a region file I wasn’t entirely sure what was in it and it was region 5 negative 3 so R 5 minus 3 dot M CA is basically what it would look like in the region folder by referring to these tables I can see that a region

Number of 5 and X 5 will cover coordinates between 25 60 and 30 71 the x-axis looking at the negative Zed over here minus three will give us a Zed coordinate of between 1025 and 1536 so now I can go and check those coordinates in my world probably flying around a

Backup of the world in spectator mode again see if I have built anything there and if not I know that that file in particular is safe to delete now each of the cells that determines where a region starts and ends actually has a formula in it that derives the coordinates from

This region number here so for example if I was to put in say a region X 23 and hit enter that updates to show you the coordinates that would be covered by a region with an X number of 23 it’s eleven thousand seven seven six and twelve thousand two eight seven that is

The minimum and maximum value that that region would cover in terms of x coordinates I could do exactly the same thing down here with the negative number making sure I input a negative number of course let’s say we had something that was positive twenty three but negative

Ten for example there we go enter ten and these update to show the coordinates minus four 609 and minus 50 120 and those would be the maximum regions that it would be in the negative Z coordinates so a twenty three minus ten eleven thousand blocks out in the x axis

And a four thousand to five thousand blocks out on the z axis once again I can check around in those coordinates for anything that might be valuable to me and then delete it if I don’t find anything you can ignore this table over here by the way there’s nothing really

Going on there I was just trying to work out a way to lay out the information in a way that made sense but I think working with the chunk ranges doesn’t really make as much sense as working with coordinates because we’re all quite used to looking at coordinates at this

Point so if you decide you want to delete some regions of your world but you’re not quite sure how to work out the maths hopefully that will be a useful tool for you remember that deleting these regions does not delete the terrain it does not change the

Terrain in any way it only provides new opportunities for these chunks to be newly generated using the 1.14 world generation which just means a couple of additional structures that might be there that weren’t there before or was slightly different before like villages this jungle for example is something

That I just flew over who I was holding the map leading me to the woodland mansion I didn’t even raid this temple down here so I have absolutely no problem with deleting this region of the world and allowing it to regenerate hoping with fingers crossed that a

Bamboo forest will generate here so we can get some bamboo find some pandas and explore it in Minecraft 1.14 some of the villages I’ve flown over or visited in the past will be reset but I’m planning on preserving ones like this one so that we have an example of what an original

Village looked like and because this region also contains vitally important areas that we built up before like the ink farm that we’ve built over here I also don’t plan on resetting anything in the nether all the end as I do have ongoing projects in the nether and while

It can be useful to reset chunks of the outer end islands so you can regenerate n cities and gather more loot and electron shelters and stuff if you’re on a multiplayer server Here I am on a single-player world without really any kind of need to do that I haven’t

Explored vast areas of the outer end but if you preserve the central four regions of the end island a lot of the time you can just delete chunks from around the outside of that delete regions from the outer islands especially as they get further out and then you can reset n

Cities so that lots of different players on a multiplayer server can each have a chance to get their own shell cos their own alight trip but it’s not really going to be possible for me to demonstrate that I’ve gone and deleted these unused chunks of the world until

We manage to load them up in 1.14 again and I can demonstrate exactly what has changed but since the opportunity to do that is still a few days off that is gonna be it for this episode of the Minecraft Survival Guide thank you so much for watching this episode and I

Hope you enjoyed it if you did don’t forget to leave a like subscribe if you want to see more and I will see you guys soon take care bye for now You