Fix loading schematic from clipboard;

[HarvelsX]

No description provided.

[Phoenix616]

Sorry for only getting to this now, I must've missed the email about it.

What exact issue does this fix? And is it really necessary to get rid of the pre-loading of the BlockData for it? Because that was intentionally done to improve the speed of the generation. (Adapting the blocks every time is just way more expensive than doing it once and keeping them in memory)

[HarvelsX]

What exact issue does this fix?

@Phoenix616, initially the plugin was incorrectly getting blocks from the schematic, causing the world to be empty.

And is it really necessary to get rid of the pre-loading of the BlockData for it? Because that was intentionally done to improve the speed of the generation. (Adapting the blocks every time is just way more expensive than doing it once and keeping them in memory)

Oh, I did not think of that. I will go back to the previous implementation, but I will try to make the loading asynchronous, so that I do not slow down the main thread.

[Phoenix616]

Well the current code worked for me when I used it in the past so this seems a bit weird. Something must've changed with schematics maybe? I'll try to test it myself when I find the time but feel free to adjust it to keep the pre-caching.

[HarvelsX]

@Phoenix616, tested only with a large schematic, but with it the previous method of getting blocks from the schematic did not work correctly. Commits above make schematic load asynchronous and lazy to get it later from the future.

[HarvelsX]

Here's a scheme that the previous method of getting blocks doesn't work with.
art-plot.zip