Hello, so I have this structure. On this structure are two chests at two different locations. I can get the coordinates of where the chest spawns, but I need to add items to these chests as they spawn empty. How do I go about adding items to chests assuming I know the coordinates of them?

world.getBlockTileEntity(x,y,z);

cast to IInventory,

then setInventorySlotContents(int ,ItemStack);

I find this hilarious... Because I was helping a friend with this last night...

 

Here is the code:

par1World.setBlock(i1, j1, k1, Block.chest.blockID, 0, 2);
          TileEntityChest tileentitychest = (TileEntityChest)par1World.getBlockTileEntity(i1, j1, k1);
          tileentitychest.setInventorySlotContents(0, new ItemStack (Block.anvil, 1));

You could also try out my Structure Generation Tool - it has methods that allow you to easily manipulate things like TileEntity inventories, set painting art, add items to item frames, etc.

 

Additionally, you'll be able to generate your structure easily at any rotation or offset.

 

http://www.minecraftforum.net/topic/1963371-structure-generation-and-rotation-tool/

 

It's open source, so you can see for yourself how the methods work and copy it if you want.