/clone command can clone more than 655360 blocks, exceeding the limit

Hi Justin,

This is iSloth, the reporter of MCPE-183515.

I appreciate your efforts in further investigating the cloning limit issue. I wanted to share an additional screenshot showing that the 10 * 2^16 limit does not consistently apply. I hope this will help in understanding the bug better.

I am willing to collaborate to try to figure out the source of this bug, despite my limited understanding of programming and coding. Working together might help us narrow down the specific issue causing the bug.

Best regards,
iSloth2437

Hi Justin,

This is iSloth, the reporter of MCPE-183515.

I appreciate your efforts in further investigating the cloning limit issue. I wanted to share an additional screenshot showing that the 10 * 2^16 limit does not consistently apply. I hope this will help in understanding the bug better.

I am willing to collaborate to try to figure out the source of this bug, despite my limited understanding of programming and coding. Working together might help us narrow down the specific issue causing the bug.

Best regards,
iSloth2437

Hello iSloth,
Thank you for your additional screenshot.
The limit volume has been 655360 blocks since BE 1.18. You can find this number in Chinese Minecraft Wiki, in the page "命令/clone". English Minecraft Wiki pointed out that the limit was 524288 blocks, which is outdated. I have edited that page, so it's correct now.
The day before I reported this issue, someone uploaded a screenshot in a group of Wiki contributors. Contributors started a discussion about the root cause of the bug.
It is predicted that the game tries to calculate the number of blocks using the formula (x2-x1)×(y2-y1)×(z2-z1). However, the correct formula should be (x2-x1+1)×(y2-y1+1)×(z2-z1+1). Because (-1+32)×(256+64)×(-1+64)=624960<655360, the game indicates that the number of blocks does not exceed the limit and executes the command, while the actual number of blocks is (-1+32+1)×(256+64+1)×(-1+64+1)=657408>655360.
I look forward to your further research on this bug. Also, you can email me for further discussion. (see my user page:https://zh.minecraft.wiki/w/User:QWERTY-5238)
Best wishes,
Justin Zhang

Can confirm.
If you clone a region from 1 1 1 to 80 100 100, of course there are 80*100*100=800000 blocks, but the game shows (774279 > 655360) rather than 800000. 774279=79*99*99.
So I think the reason of this bug is that the number of blocks is not calculated correctly. The length of a side of a region should be max-min+1 (e.g 80-1+1=80), but the game calculates it with max-min.
In the Steps to reproduce, for blocks from -32 -64 -64 to -1 256 -1, there are 32*321*64=657408 blocks, but the game would treat it as 31*320*64=634880 < 655360.
If cloning a 655361*2*2 region, the game would treat it as 655360*1*1=655360. So we can clone 655361*2*2=2621444 blocks

This isn't really a bug, it's a benefit

Mine can only fill 32796 blocks.I don't know why.

我的设备上只能填充32796个方块。我不知道为什么。

Can confirm in 1.21.62 and 1.21.70.24 Preview. However, I cannot edit my own open issues after the website migration. Please help me!

Thank you for your report!
After consideration, the issue is being closed as Won't Fix.

Please note that this is not the same as Working as Intended, as this bug report correctly describes behavior in the game that might not be the intended or desirable behavior, but it will not be fixed right now. Sometimes, this is because the issue reported is minor and/or impossible to change without large architectural changes to the code base.

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