change block ids per command line

[paulzon]

hello, we want convert a old world (1.7.10) to a new minecraft version (1.12.2). Our steps:

1. load the old wold (1.7.10) with mca selector
2. export chunks
3. load a new generated world (1.12.2)
4. import chunks Nice! Its works for all Vaniella Blocks! But we use forge mods :D

Next step is to change the block ids of the world. We have a mapping (old block id, new block id). It is possible to write a query to change all block ids??

java -jar mcaselector-1.9.3.jar --headless --mode change --world atlantis --query<???>

Thanks for help!

[Querz]

That's a very specific request but reasonable. It would only make sense for versions 1.12.2 and below though. Because of that I would also implement it for command line use only.

Can you provide a sample of how your mapping looks like?

[paulzon]

i use the mod tellme: https://www.curseforge.com/minecraft/mc-mods/tellme

that give me all block ids from mc 1.7.10 and 1.12.2.

afterthat i match the blockids by block name. mapping are two numbers.