Right now I have block classes that are all identical except for their voxel shape, defined inside each class. I'd like to somehow pass this in during registry so that I can boil it down to one reusable class. Is this possible? I know it can't be passed into the super since the parent class "Block" doesn't work that way; I could extend AbstractBlock instead and add code for that, but that seems like more work.

Edited August 30, 20205 yr by urbanxx001

You can use anonymous class. https://docs.oracle.com/javase/tutorial/java/javaOO/anonymousclasses.html

Ah ok I'll tinker with an anyonymous class. Thanks!

So I realized that VoxelShape can be passed into the registry like this:

public static final VoxelShape[] CROP_SHAPE = new VoxelShape[] {
            Block.makeCuboidShape(0.0D,0.0D,0.0D,16.0D,2.0D,16.0D),
            Block.makeCuboidShape(0.0D,0.0D,0.0D,16.0D,4.0D,16.0D),
            Block.makeCuboidShape(0.0D,0.0D,0.0D,16.0D,6.0D,16.0D),
            Block.makeCuboidShape(0.0D,0.0D,0.0D,16.0D,8.0D,16.0D)
    };

    public static final Block PEANUTS = register(Reference.MOD_ID + ":peanut", new ModCropsBlock(CROP_SHAPE, ModItems.PEANUT_ITEM, Block.Properties.create(Material.PLANTS).doesNotBlockMovement().tickRandomly().zeroHardnessAndResistance().sound(SoundType.CROP)));

With the class: 

public class ModCropsBlock extends CropsBlock {

    public final VoxelShape[] SHAPE;
    public final Item SEEDS;

    public ModCropsBlock(VoxelShape[] shape, Item seeds, Properties builder) {
        super(builder);
        this.SHAPE = shape;
        this.SEEDS = seeds;
    }

    @Override
    public int getMaxAge() { return SHAPE.length - 1; }

    @Override
    public IntegerProperty getAgeProperty() {
        return IntegerProperty.create("age", 0, getMaxAge());
    }

    @Override
    protected IItemProvider getSeedsItem() { return SEEDS; }

    @Override
    public void randomTick(BlockState state, ServerWorld worldIn, BlockPos pos, Random random) {
        if (random.nextInt(getMaxAge()) != 0) {
            super.randomTick(state, worldIn, pos, random);
        }
    }

    @Override
    protected int getBonemealAgeIncrease(World worldIn) {
        return super.getBonemealAgeIncrease(worldIn) / getMaxAge();
    }

    @Override
    protected void fillStateContainer(StateContainer.Builder<Block, BlockState> builder) {
        builder.add(getAgeProperty());
    }

    @Override
    public VoxelShape getShape(BlockState state, IBlockReader worldIn, BlockPos pos, ISelectionContext context) {
        return SHAPE[state.get(this.getAgeProperty())];
    }
}

 

However during compilation I get a null pointer error for getMaxAge and getAgeProperty, which means the VoxelShape isn't being retrieved. Is this an easy fix or do I actually need anonymous functions? Sorry if this is a simple Java question.

Each time you call

 getAgeProperty()

you creates a new property, which I think it makes the property you added to the state container and the property you use in the getShape() is different... but I'm not sure about this (There's already a property in CropsBlock, you should probably use it instead of create your own one).

Also the reason I recommended you anonymous class is because I thought you don't want to create a class just for custom shapes, but apparently I misread your question : (

Edited September 2, 20205 yr by poopoodice

True creating a new property each time might be affecting it. The reason I think it's an issue with getting the shape is that getMaxAge returns an error separately, which is only dependent on that. I'm actually just overriding the current methods that are in place so that both properties generate automatically based on the shape array. In CropsBlock, these fields are defined outside the methods, but when I try to do it that way with something like

Max_Age = Shapes.length - 1

then it says that Shapes isn't initialized.

...then do it in the constructor? Your Shapes field isn't static, but defined in the constructor, so do the same with your age property.

Ah it's the scope.I made those changes and it resolved the max age, but there's still a null error with the age property, saying it's invalid:

public final VoxelShape[] SHAPE;
public final Item SEEDS;
public final int MAX_AGE;
public final IntegerProperty AGE_PROPERTY;

public ModCropsBlock(VoxelShape[] shape, Item seeds, Properties builder) {
    super(builder);
    this.SHAPE = shape;
    this.SEEDS = seeds;
    this.MAX_AGE = SHAPE.length - 1;
    this.AGE_PROPERTY = IntegerProperty.create("age", 0, MAX_AGE);
}

Edited September 3, 20205 yr by urbanxx001