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[1.12.1] How to get variants count


MineDen

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Hello, I need to get maximum meta value of block. I created a creative tab and returning random block as icon, but I have colored blocks. And I want to return random meta. But I don't know how to get maximum meta value of block. Now my creative tab code looks like this:

public static CreativeTabs decoration = new CreativeTabs("mtest_decoration") {
        @Override
        public ItemStack getTabIconItem() {
            int index = (int) Math.round(Math.random() * (MBlocks.BLOCKS.size() - 1));
            Block block = MBlocks.BLOCKS.get(index);
            int meta = 0;
            ItemStack is = new ItemStack(block, 1, meta);
            return is;
        }
    };

 

Edited by MineDen
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18 minutes ago, MineDen said:

This method requires NonNullList of ItemStacks.

But why? I trying to call this method from an instance of Item.

It's just a coding style thing. That was probably convenient to the person who needed that method in the first place since they were using it for making creative tabs. Like you could pass in an existing list for the creative tab and this method would add to it then you could get the list containing the subitems of multiple item types and if they are itemstacks that makes it super easy to put into the gui container inventory.

Check out my tutorials here: http://jabelarminecraft.blogspot.com/

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7 minutes ago, jabelar said:

It's just a coding style thing. That was probably convenient to the person who needed that method in the first place since they were using it for making creative tabs. Like you could pass in an existing list for the creative tab and this method would add to it then you could get the list containing the subitems of multiple item types and if they are itemstacks that makes it super easy to put into the gui container inventory.

Okay, I'll try this now.

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Watch out for SideOnly(CLIENT), I believe getSubItems is client side only (as it is only used for the creative inventory).

 

Instead use:

BlockStateContainer bsc = block.getBlockState();
ImmutableList<IBlockState> values = bsc.getValidStates();

That will result in a list of IBlockStates that you can then ask for a pickBlock item.

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1 hour ago, diesieben07 said:

Not anymore.

Oh? Since what version?

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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51 minutes ago, Choonster said:

Since this commit for 1.12. It was then done by Vanilla in 1.12.1.

Ok cool.

My code is likely holdover from when I did things in 1.11 (that is: I made it work without getSubItems and when I updated to 1.12, it still worked)

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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On 16.02.2018 at 8:42 PM, diesieben07 said:

You create an empty NonNullList using NonNullList.create. Then you call getSubItems with that list and CreativeTabs.SEARCH. Afterwards you will have all sub items of that item in the list.

Seriously, this is not hard.

This method returns void, what I can do?

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10 minutes ago, Choonster said:

 

It adds the items to the list that you pass as an argument.

Is this code right? It works.

public static CreativeTabs decoration = new CreativeTabs("mtest_decoration") {
        @Override
        public ItemStack getTabIconItem() {
            int index = (int) Math.round(Math.random() * (MBlocks.BLOCKS.size() - 1));
            Block block = MBlocks.BLOCKS.get(index);
            NonNullList<ItemStack> subBlocks = NonNullList.create();
            block.getSubBlocks(CreativeTabs.SEARCH, subBlocks);
            System.out.println(subBlocks);
            int meta = (int) Math.round(Math.random() * (subBlocks.size() - 1));
            ItemStack is = new ItemStack(block, 1, meta);
            return is;
        }
    };

 

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Use Random#nextInt(int) to generate a random integer between 0 (inclusive) and the argument (exclusive) instead of the multiplication, subtraction and rounding you're doing now.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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Just now, Choonster said:

Use Random#nextInt(int) to generate a random integer between 0 (inclusive) and the argument (exclusive) instead of the multiplication, subtraction and rounding you're doing now.

Math.round(Math.random() * <count> - 1)

is the JavaScript arrays way, and it's my favourite way, so shut up i will use this way.

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2 hours ago, MineDen said:

Is this code right? It works.


public static CreativeTabs decoration = new CreativeTabs("mtest_decoration") {
        @Override
        public ItemStack getTabIconItem() {
            int index = (int) Math.round(Math.random() * (MBlocks.BLOCKS.size() - 1));
            Block block = MBlocks.BLOCKS.get(index);
            NonNullList<ItemStack> subBlocks = NonNullList.create();
            block.getSubBlocks(CreativeTabs.SEARCH, subBlocks);
            System.out.println(subBlocks);
            int meta = (int) Math.round(Math.random() * (subBlocks.size() - 1));
            ItemStack is = new ItemStack(block, 1, meta);
            return is;
        }
    };

 

Why are you creating a random metadata?

What if the only valid values are 0, 1, 3, 7, and 12?

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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