Hello forge community while i was developing my first forge mod for minecraft 1.8 i ran into an issue with my knowledge on minecrafts property and meta data system.  I have a jar with a custom model that changes  depending on the amount of the substance put into the jar. this property name is AMOUNT but i also want another property for the type of the substance being put in (there are two) this property i would like to be called SPECIES (its a plant). I was looking how minecraft does this for the anvil (is has a directional property and a damage property) and they used this code here to get the meta and state

 

    
  public IBlockState getStateFromMeta(int p_getStateFromMeta_1_)
  {
    return getDefaultState().withProperty(FACING, EnumFacing.getHorizontal(p_getStateFromMeta_1_ & 0x3)).withProperty(DAMAGE, Integer.valueOf((p_getStateFromMeta_1_ & 0xF) >> 2));
  }
  public int getMetaFromState(IBlockState p_getMetaFromState_1_)
  {
    int i = 0;
    
    i |= ((EnumFacing)p_getMetaFromState_1_.getValue(FACING)).getHorizontalIndex();
    i |= ((Integer)p_getMetaFromState_1_.getValue(DAMAGE)).intValue() << 2;
    
    return i;
  }
  
  protected BlockState createBlockState()
  {
    return new BlockState(this, new IProperty[] { FACING, DAMAGE });
  }

 

Theyre using bitwis operators and i was wondering how i could implement the same idea to my mod thank you

You have 4 bits of metadata (numbers 0-15). If you can squeeze your stuff into that... do so. I am not sure what exactly your question is.

Well i understand that, but i need two meta datas essentially, the anvil has directional data and damage. how can i do something similar.

  public static final PropertyDirection FACING = PropertyDirection.create("facing", EnumFacing.Plane.HORIZONTAL);
  public static final PropertyInteger DAMAGE = PropertyInteger.create("damage", 0, 2);

Vanilla already showed you how....

i wouldnt have posted if using the same code worked....

The code looks alright though, it should work. What exactly does not work?

this is what the method getMetaFromState is returning

0
5
10
15
20
21
30
31
40
45

That should be impossible. Please post your complete block class.

here it is

package knaxelbaby.modcore.blocks;

import java.util.ArrayList;

import knaxelbaby.modcore.Reference;
import knaxelbaby.modcore.blocks.access.RWBlockJarInteractable;
import knaxelbaby.modcore.models.Mason_Jar_0;
import knaxelbaby.modcore.models.Mason_Jar_1;
import knaxelbaby.modcore.models.Mason_Jar_2;
import knaxelbaby.modcore.models.Mason_Jar_3;
import knaxelbaby.modcore.models.Mason_Jar_4;
import knaxelbaby.modcore.models.Mason_Jar_5;
import knaxelbaby.modcore.models.Mason_Jar_6;
import knaxelbaby.modcore.models.Mason_Jar_7;
import knaxelbaby.modcore.models.Mason_Jar_8;
import knaxelbaby.modcore.models.Mason_Jar_Empty;
import knaxelbaby.modcore.models.Mason_Jar_Model;
import knaxelbaby.modcore.tileentities.TileEntityJar;
import net.minecraft.block.BlockContainer;
import net.minecraft.block.material.Material;
import net.minecraft.block.properties.IProperty;
import net.minecraft.block.properties.PropertyInteger;
import net.minecraft.block.state.BlockState;
import net.minecraft.block.state.IBlockState;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.BlockPos;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;

public class RWBlockJar extends BlockContainer implements
	RWBlockJarInteractable {

public static final PropertyInteger AMOUNT =PropertyInteger.create("amount", 0, 9);
public static final PropertyInteger SPECIES =PropertyInteger.create("amount", 0, 9);
private ArrayList<Mason_Jar_Model> models = new ArrayList<Mason_Jar_Model>();

private Mason_Jar_0 jar0 = new Mason_Jar_0();
private Mason_Jar_1 jar1 = new Mason_Jar_1();
private Mason_Jar_2 jar2 = new Mason_Jar_2();
private Mason_Jar_3 jar3 = new Mason_Jar_3();
private Mason_Jar_4 jar4 = new Mason_Jar_4();
private Mason_Jar_5 jar5 = new Mason_Jar_5();
private Mason_Jar_6 jar6 = new Mason_Jar_6();
private Mason_Jar_7 jar7 = new Mason_Jar_7();
private Mason_Jar_8 jar8 = new Mason_Jar_8();
private Mason_Jar_Empty jare = new Mason_Jar_Empty();

private ResourceLocation texture = new ResourceLocation(Reference.MODID,
		"textures/custom/Mason_Jar.png");

public RWBlockJar(Material mat) {
	super(mat);
    setDefaultState(this.getDefaultState().withProperty(AMOUNT, Integer.valueOf(0)).withProperty(SPECIES, Integer.valueOf(0)));
	models.add(jare);
	models.add(jar0);
	models.add(jar1);
	models.add(jar2);
	models.add(jar3);
	models.add(jar4);
	models.add(jar5);
	models.add(jar6);
	models.add(jar7);
	models.add(jar8);

}

public TileEntity createNewTileEntity(World world, int arg) {
	return new TileEntityJar();
}

public int getRenderType() {
	return -1;
}

public boolean isOpaqueCube() {
	return false;
}

public boolean renderAsNormalBlock() {
	return false;
}

public IBlockState getStateFromMeta(int meta) {
    return getDefaultState().withProperty(AMOUNT, Integer.valueOf( meta & 0x3)).withProperty(SPECIES, Integer.valueOf(( meta & 0xF) >> 2));
}
public int getMetaFromState(IBlockState state) {
    int i = 0;
    
    i |= ((Integer)state.getValue(AMOUNT)).intValue();
    i |= ((Integer)state.getValue(SPECIES)).intValue() << 2;
    
    System.out.println(i);
    
    return i;
  }
protected BlockState createBlockState() {
	return new BlockState(this, new IProperty[] { AMOUNT, SPECIES});
}

public ResourceLocation getTextureLocation() {
	return texture;
}

public void setCurrentModel(World world, BlockPos pos, int i) {
	IBlockState state = ((IBlockState) world.getBlockState(pos));
	int meta = getMetaFromState(state);
	world.setBlockState(pos, state.withProperty(AMOUNT, Integer.valueOf(i)));
}


public boolean isFull(World world, BlockPos pos) {
	return (((Integer) world.getBlockState(pos).getValue(AMOUNT)).intValue() == 9);
}

public Mason_Jar_Model getCurrentModel(World world, BlockPos pos) {
	return models.get(((Integer) world.getBlockState(pos).getValue(AMOUNT)).intValue());
}

public int getCurrentModelIndex(World world, BlockPos pos) {
	return ((Integer)world.getBlockState(pos).getValue(AMOUNT)).intValue();
}

public boolean isEmpty(World world, BlockPos pos) {
	return (((Integer) world.getBlockState(pos).getValue(AMOUNT)).intValue() == 0);
}

@Override
public int getSpecies(World world, BlockPos pos) {
	return ((Integer)world.getBlockState(pos).getValue(SPECIES)).intValue();
}

@Override
public void setSpecies(World world, BlockPos pos, int i) {
	world.setBlockState(pos, world.getBlockState(pos).withProperty(SPECIES, i));

}
}

heres the interactable that lets me access certain methods

package knaxelbaby.modcore.blocks.access;

import knaxelbaby.modcore.models.Mason_Jar_Model;
import net.minecraft.util.BlockPos;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;

public abstract interface RWBlockJarInteractable {
public abstract void setCurrentModel(World world, BlockPos pos, int i);
public abstract boolean isFull(World world, BlockPos pos);
public abstract Mason_Jar_Model getCurrentModel(World world, BlockPos pos);
public abstract int getCurrentModelIndex(World world, BlockPos pos);
public abstract ResourceLocation getTextureLocation();
public abstract boolean isEmpty(World worldObj, BlockPos pos);
public abstract int getSpecies(World world, BlockPos pos);
public abstract void setSpecies(World world,BlockPos pos, int i);
}

and the renderer class

package knaxelbaby.modcore.renderers;

import java.util.ArrayList;

import knaxelbaby.modcore.Reference;
import knaxelbaby.modcore.blocks.access.RWBlockJarInteractable;
import knaxelbaby.modcore.blocks.access.RWPieceUsable;
import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.ResourceLocation;

import org.lwjgl.opengl.GL11;

public class RendererJar extends TileEntitySpecialRenderer {

public RendererJar() {

}

public void renderTileEntityAt(TileEntity entity, double x, double y,
		double z, float angle, int i) {
	GL11.glPushMatrix();
	GL11.glTranslatef((float) (x + .5), (float) (y + 1.5), (float) (z + .5));
	GL11.glRotatef(180, 0, 0, 1F);
	RWBlockJarInteractable usable = ((RWBlockJarInteractable) entity.getWorld()
			.getBlockState(entity.getPos()).getBlock());
	ResourceLocation res = usable.getTextureLocation();
	this.bindTexture(res);

	GL11.glPushMatrix();
	GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
	usable.getCurrentModel(entity.getWorld(), entity.getPos()).render(
			0.0625F);
	GL11.glPopMatrix();
	GL11.glPopMatrix();
}

}

Well, both your properties have 10 values... You can only store one of them in metadata, since metadata has only 4 bits. But you would need

ceil(log[sub]2[/sub](10x10=100)) = 7

bits to store both of your properties. You need to store your data in a TileEntity or make more than one Block.

how would i store TileEntity data

For each block with TileEntity on specific world position, there is a TileEntity matches the block.

So you can store data as normal field, and read and save the data using readFromNBT & writeToNBT

 

There are plenty of tutorials describing how to make TileEntity, so you would easily be able to make one.