Trying to make a block that will have connected textures in 1.8, I took a look at the glass panes models, block state data, and code. When trying to launch I get

 

net.minecraftforge.fml.common.LoaderException: java.lang.IllegalArgumentException: Don't know how to convert unnamed:connected_polished_granite[down=true,east=true,north=true,south=true,up=true,west=true] back into data...

 

I do have a blockstate file for connected_polished_granite in assets/unnamed/blockstates

 

 

{

    "variants": {

        "down=true,east=true,north=true,south=true,up=true,west=true": { "model": "c_p_g_udnesw"},

        "down=false,east=false,north=false,south=false,up=false,west=false": { "model": "c_p_g"}

    }

}

 

 

 

I do have model files for it as well. No idea why I'm getting the error if anyone knows, please let me know.

Show the block code.

[spoiler=BlockConnected]

package com.zalthonethree.unnamed.block;

 

import net.minecraft.block.Block;

import net.minecraft.block.material.Material;

import net.minecraft.block.properties.IProperty;

import net.minecraft.block.properties.PropertyBool;

import net.minecraft.block.state.BlockState;

import net.minecraft.block.state.IBlockState;

import net.minecraft.util.BlockPos;

import net.minecraft.util.EnumFacing;

import net.minecraft.world.IBlockAccess;

 

import com.zalthonethree.unnamed.Reference;

import com.zalthonethree.unnamed.client.CreativeTab;

 

public class BlockConnected extends Block {

protected BlockConnected(Material materialIn) { super(materialIn); }

 

public static final PropertyBool UP = PropertyBool.create("up");

public static final PropertyBool DOWN = PropertyBool.create("down");

public static final PropertyBool NORTH = PropertyBool.create("north");

public static final PropertyBool EAST = PropertyBool.create("east");

public static final PropertyBool SOUTH = PropertyBool.create("south");

public static final PropertyBool WEST = PropertyBool.create("west");

 

public BlockConnected() {

this(Material.rock);

this.setDefaultState(this.blockState.getBaseState()

.withProperty(UP, false)

.withProperty(DOWN, false)

.withProperty(NORTH, false)

.withProperty(EAST, false)

.withProperty(SOUTH, false)

.withProperty(WEST, false)

);

this.setCreativeTab(CreativeTab.unNamed);

}

 

public IBlockState getActualState(IBlockState state, IBlockAccess worldIn, BlockPos pos) {

return state.withProperty(UP, true)

.withProperty(DOWN, true)

.withProperty(NORTH, true)

.withProperty(EAST, true)

.withProperty(SOUTH, true)

.withProperty(WEST, true);

}

 

private boolean canTextureConnect(IBlockAccess worldIn, BlockPos origin, EnumFacing side) {

BlockPos off = origin.offset(side);

Block block = worldIn.getBlockState(off).getBlock();

return block == this;

}

 

protected BlockState createBlockState() {

return new BlockState(this, new IProperty[] {UP, DOWN, NORTH, EAST, WEST, SOUTH});

}

 

@Override public String getUnlocalizedName() {

return String.format("tile.%s%s", Reference.RESOURCE_PREFIX, getUnwrappedUnlocalizedName(super.getUnlocalizedName()));

}

 

protected String getUnwrappedUnlocalizedName(String unlocalizedName) {

return unlocalizedName.substring(unlocalizedName.indexOf(".") + 1);

}

}

 

 

[spoiler=BlockConnectedPolishedGranite]

public class BlockConnectedPolishedGranite extends BlockConnected {

public BlockConnectedPolishedGranite() {

super();

this.setUnlocalizedName("connected_polished_granite");

}

}

 

 

You don't have the convert-from-meta-to-state or the convert-from-state-to-meta functions. Vanilla isn't magic.

Ok that fixed that however now the textures don't work. For now I only have a texture for a block connected to nothing, here's the code

 

[spoiler=BlockConnected]

package com.zalthonethree.unnamed.block;

 

import net.minecraft.block.Block;

import net.minecraft.block.material.Material;

import net.minecraft.block.properties.IProperty;

import net.minecraft.block.properties.PropertyBool;

import net.minecraft.block.state.BlockState;

import net.minecraft.block.state.IBlockState;

import net.minecraft.util.BlockPos;

import net.minecraft.util.EnumFacing;

import net.minecraft.world.IBlockAccess;

 

import com.zalthonethree.unnamed.Reference;

import com.zalthonethree.unnamed.client.CreativeTab;

 

public class BlockConnected extends Block {

protected BlockConnected(Material materialIn) { super(materialIn); }

 

public static final PropertyBool UP = PropertyBool.create("up");

public static final PropertyBool DOWN = PropertyBool.create("down");

public static final PropertyBool NORTH = PropertyBool.create("north");

public static final PropertyBool EAST = PropertyBool.create("east");

public static final PropertyBool SOUTH = PropertyBool.create("south");

public static final PropertyBool WEST = PropertyBool.create("west");

 

public BlockConnected() {

this(Material.rock);

this.setDefaultState(this.blockState.getBaseState()

.withProperty(UP, false)

.withProperty(DOWN, false)

.withProperty(NORTH, false)

.withProperty(EAST, false)

.withProperty(SOUTH, false)

.withProperty(WEST, false)

);

this.setCreativeTab(CreativeTab.unNamed);

}

 

public IBlockState getActualState(IBlockState state, IBlockAccess worldIn, BlockPos pos) {

return state.withProperty(UP, canTextureConnect(worldIn, pos, EnumFacing.UP))

.withProperty(DOWN, canTextureConnect(worldIn, pos, EnumFacing.DOWN))

.withProperty(NORTH, canTextureConnect(worldIn, pos, EnumFacing.NORTH))

.withProperty(EAST, canTextureConnect(worldIn, pos, EnumFacing.EAST))

.withProperty(SOUTH, canTextureConnect(worldIn, pos, EnumFacing.SOUTH))

.withProperty(WEST, canTextureConnect(worldIn, pos, EnumFacing.WEST));

}

 

public int getMetaFromState(IBlockState state) { return 0; }

public IBlockState getStateFromMeta(int meta) { return this.getDefaultState(); }

 

private boolean canTextureConnect(IBlockAccess worldIn, BlockPos origin, EnumFacing side) {

BlockPos off = origin.offset(side);

Block block = worldIn.getBlockState(off).getBlock();

return block == this;

}

 

protected BlockState createBlockState() {

return new BlockState(this, new IProperty[] {UP, DOWN, NORTH, EAST, WEST, SOUTH});

}

 

@Override public String getUnlocalizedName() {

return String.format("tile.%s%s", Reference.RESOURCE_PREFIX, getUnwrappedUnlocalizedName(super.getUnlocalizedName()));

}

 

protected String getUnwrappedUnlocalizedName(String unlocalizedName) {

return unlocalizedName.substring(unlocalizedName.indexOf(".") + 1);

}

}

 

 

[spoiler=BlockConnectedPolishedGranite]

package com.zalthonethree.unnamed.block;

 

public class BlockConnectedPolishedGranite extends BlockConnected {

public BlockConnectedPolishedGranite() {

super();

this.setUnlocalizedName("connected_polished_granite");

}

}

 

 

[spoiler=assets/unnamed/blockstates/connected_polished_granite.json]

{

    "variants": {

        "down=true,east=true,north=true,south=true,up=true,west=true": { "model": "c_p_g_udnesw"},

        "down=false,east=false,north=false,south=false,up=false,west=false": { "model": "c_p_g"}

    }

}

 

 

[spoiler=c_p_g]

{

    "parent": "block/cube_all",

    "textures": {

        "all": "unnamed:blocks/c_p_g"

    }

}

 

 

and the texture does exist in assets/unnamed/textures/blocks/c_p_g

 

Edit: Fixed by putting modid:model instead of just model