I want to place blocks (like colored wool) in my players hotbar and then make use of those items in my code.  Using code similar to below, I can easily generate a block or IBlockState from an item in the players Inventory.  However, I haven't been able to get the properties.  For example, if the item in question is a piece of colored wool, my code below only generates a white piece of wool.

 

Does anyone know how to figure out the properties of an item in a players Inventory?  I know how to set the properties, I simply don't know how to figure out what the properties of an Item are.

 

Item testItem = player.inventory.mainInventory[0].getItem();
Block testBlock = Block.getBlockFromItem(player.inventory.mainInventory[0].getItem());
IBlockState iState = testBlock.getDefaultState();

You need to look at the item's metadata and convert from meta to state.

You need a null check for testBlock. Not all Items have a corresponding Block.

The code was just an example.  I will only be processing valid items.

Using the meta data did the trick.  The code below produces the correct IBlockState.

 

Please note that the code below does not do any error checking.  It's just a proof of concept to access the meta data of a player inventory item.  Code is needed to check that the inventory slot has something in it and that the item can be converted to a block.

 

Block testBlock = Block.getBlockFromItem(player.inventory.mainInventory[0].getItem());
int a = player.inventory.mainInventory[0].getMetadata();
sender.addChatMessage(new TextComponentString(TextFormatting.GREEN + "Meta Data " + testBlock.getStateFromMeta(a)));