Endermen can pick up and place snowless snowy grass blocks

A distinction should be made between block states that rely only on the block itself, such as the mode of a comparator, and block states that rely on blocks placed nearby in the world, such as a redstone lamp's powered state, fences' connections and grass' snowy state mentioned in this ticket.

Confirmed on 18w30b

Hold up, theirs a texture for the top of the snowy grass block?, learn new things every day and this is confirmed on 18w30b

This can be fixed by calling Block#getValidBlockForPosition for iblockstate2 in Enderman#AIPlaceBlock#updateTask() to place the correct BlockState.

From this:

IBlockState iblockstate2 = this.enderman.func_195405_dq();

To this:

IBlockState iblockstate2 = Block.getValidBlockForPosition(this.enderman.func_195405_dq(), this.enderman.world, blockpos);

Also to fix the block in the enderman's hands make the change in AITakeBlock in addition to swapping the order of these two lines:

if (block.isIn(BlockTags.ENDERMAN_HOLDABLE) && flag) {
    this.enderman.func_195406_b(iblockstate);
    world.setBlockToAir(blockpos);
}

To:

if (block.isIn(BlockTags.ENDERMAN_HOLDABLE) && flag) {
    world.setBlockToAir(blockpos);
    this.enderman.func_195406_b(Block.getValidBlockForPosition(iblockstate, this.enderman.world, blockpos));
}

Can confirm for 19w34a

I get this on 1.16 pre-release 5

I get this on 1.16 pre-7

I get this on 1.16 rc-1.

Please don't fix this. Make it a nice easter egg. That block state is impossible to get on survival, so having this makes that now possible. These blocks should be an unique generation with endermans.

Affects 20w27a