Issue with location parameter when using summon command in Notebooks

Jenny Goding

• March 05, 2022 06:26
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I'm having difficulty specifying location for summoning a mob in Python Notebooks.

Last year, when I went through this in my class, it was possible to include a location for where you wanted the mob to be summoned to, exactly as per the Chicken Rain tutorial:

chickens = 100

for count in range(chickens):

    summon("chicken", "2 0 0") 

 

This also worked if you ran it using integers for the location:

 

chickens = 100

for count in range(chickens):

    summon("chicken", (2, 0, 0)) 

 

I've just tried running this code today, in preparation for a class next week, and the optional location parameter no longer functions, instead throwing the following error:

 

_minecraft_builtins.MinecraftError: Unable to summon object (Code: 0x80020000)

 

The summon will work without the location, so just as summon("chicken"), but that reduces its usefulness, as you can't get the mob to spawn in a specific location.

 

Does anyone have any suggestions for getting the location to work?

 

Thanks

 

 

 

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• Official comment

  

  Laylah Bulman

  • June 20, 2022 18:16

  Our new Python Library Reference Guide with all commands, six associated exercises in the new Python Playgrounds, and a new MS Learn course for Advanced Python due out at the end of the month! Debbie Alexander Pucheng Mao
• 

  Debbie Alexander

  • March 05, 2022 10:06
  • Edited
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  Hi, Jenny Godingt !  i will take a peek right now! I'm glad to know you are continuing in Python Notebooks! =]

  Checked it to be sure: if you run this from too far a way, the distance may not allow the command.

  chickens = 100

  for count in range(chickens):

      summon("chicken", "2 0 0") 

  # This is an absolute location

  # If you are on a flat world, your chickens are

  # spawning into the void, or 

  # in the bottom layer of bedrock

   

  I don't want to assume this solves anything for you, though. Do your commands work without a location? Can you change the absolute location to be near your spot on the map? Does that help? Let me know! =]

  

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• 

  Jenny Goding

  • March 05, 2022 10:28
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  Hi Debbie,

  Thanks so much for that! - I'd been using world.set () earlier, which of course uses location relative to the player's position, and I'd completely forgotten that summon () uses the absolute position.

  I had a few students getting that same error last year, and could never quite work out what that error message was about - most likely, they were too far away from the spawning location.  So this time around, I'll have a much better idea of what the problem is.

  The notebooks are a great set up - the perfect combination of basic Python skills with Minecraft.  We have quite a few students who pick our Digital Technology elective because they've heard they'll get to do Minecraft, then they get into the coding side of things and are hooked!

   

   

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• 

  Debbie Alexander

  • March 07, 2022 03:02
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  Glad to help. So just to clarify, the coordinates with quotation marks, "2 0 0" are absolute, unless you use tilde, such as "~2 ~0 ~0" in which case they are relative... and (2,0,0) is also absolute, and does not allow tilde.

  (I hope I am getting that right; I am not double checking it with code at the moment. very dangerous)

   

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• 

  Pucheng Mao

  • March 11, 2022 04:29
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  hi, Debbie Alexander:

  Hello, I would like to ask, where can I find the complete python api manual? I only found this documentation: https://education.minecraft.net/wp-content/uploads/Code_Connection_API.pdf

  However, the documentation does not give a good description of the representation of similar positions. I sometimes use the makecode editor, where the pos(x,y,z) function is used for the relative position. I don't know where there is a more detailed explanation? 

  Or Notebooks and makecode editor are completely different Apis ?

  Thanks a lot.

   

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• 

  Debbie Alexander

  • June 20, 2022 15:44
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  I m sorry, I did not see this until recently. The only manual I know of is the documentation I have posted on my blog, here:

  http://tech.grandmadeb.com/index.php/2022/06/20/where-are-all-of-the-minecraft-coding-manuals/

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