Transfer Staff

package yesodmod.general.item;



import java.util.List;

import net.minecraft.block.Block;
import net.minecraft.client.Minecraft;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.util.MovingObjectPosition.MovingObjectType;
import net.minecraft.world.World;

public class TransferStaff extends Item {

    private final  int MAX_RANGE = 50;


    public TransferStaff() {
        super();
        maxStackSize = 1;
        setCreativeTab(CreativeTabs.tabTools);
        setUnlocalizedName("TransferStaff");
        setTextureName("yesodmod:enderstaff");
    }

    public void onCreated(ItemStack itemStack, World world, EntityPlayer player) {
        itemStack.stackTagCompound = new NBTTagCompound();
        int[] blockArray = new int[MAX_RANGE * MAX_RANGE * MAX_RANGE];
        itemStack.stackTagCompound.setIntArray("blockArray", blockArray );
        itemStack.stackTagCompound.setBoolean("blockStored", false);
    }

    public void addInformation(ItemStack itemStack, EntityPlayer player, List list, boolean par4)
    {
        if (itemStack.stackTagCompound != null)
        {
            boolean blockStored = itemStack.stackTagCompound.getBoolean("blockStored");
            list.add("Stored Block : " + blockStored);
        }
    }


    public ItemStack onItemRightClick(ItemStack itemStack, World world, EntityPlayer player)
    {
        if (!player.isSneaking())
        {
            MovingObjectPosition selectedBlock = Minecraft.getMinecraft().objectMouseOver;
            if (selectedBlock != null && selectedBlock.typeOfHit == MovingObjectType.BLOCK)
            {
                int xBlockPos = selectedBlock.blockX;
                int yBlockPos = selectedBlock.blockY;
                int zBlockPos = selectedBlock.blockZ;

                if ( itemStack.stackTagCompound != null)
                {
                    if (!hasSavedBlock(itemStack))
                    {
                        if (!hasFirstBlock(itemStack))
                        {
                            saveBlockPosition(itemStack, player, "FirstBlock", xBlockPos, yBlockPos, zBlockPos);

                            if (!world.isRemote)
                                player.addChatMessage(new ChatComponentText("First block Coordinate setted at: " + xBlockPos + ", " + yBlockPos + ", " + zBlockPos + ", "));
                        }

                        else if (!hasLastBlock(itemStack))
                        {
                            saveBlockPosition(itemStack, player, "LastBlock", xBlockPos, yBlockPos, zBlockPos);

                            if (!world.isRemote)
                                player.addChatMessage(new ChatComponentText("Second block Coordinate set at: " + xBlockPos + ", " + yBlockPos + ", " + zBlockPos + ", "));
                        }

                        else
                        {
                            itemStack.stackTagCompound.removeTag("FirstBlock");
                            itemStack.stackTagCompound.removeTag("LastBlock");
                            saveBlockPosition(itemStack, player, "FirstBlock", xBlockPos, yBlockPos, zBlockPos);

                            if (!world.isRemote)
                                player.addChatMessage(new ChatComponentText("First block Coordinate set at : " + xBlockPos + ", " + yBlockPos + ", " + zBlockPos + ", "));
                        }


                    }
                }
            }
        }

        if (player.isSneaking())
        {
            if ( itemStack.stackTagCompound == null)
            {
                itemStack.setTagCompound(new NBTTagCompound());
            }
            if (hasSavedBlock(itemStack) == false)
            {
                storeBlock(itemStack, world);
                if (!world.isRemote)
                    player.addChatMessage(new ChatComponentText("Blocks Stored"));

            }

            else
            {
                placeBlock(itemStack, world);
                itemStack.stackTagCompound.setBoolean("blockStored", false);
                itemStack.stackTagCompound.removeTag("FirstBlock");
                itemStack.stackTagCompound.removeTag("LastBlock");
                if (!world.isRemote)
                    player.addChatMessage(new ChatComponentText("Blocks Placed"));
            }
        }
        return itemStack;
    }


    private boolean hasSavedBlock(ItemStack itemStack)
    {
        return itemStack.stackTagCompound.getBoolean("blockStored");
    }

    private boolean hasFirstBlock(ItemStack itemStack)
    {
        return itemStack.stackTagCompound != null && itemStack.stackTagCompound.hasKey("FirstBlock");
    }

    private boolean hasLastBlock(ItemStack itemStack)
    {
        return itemStack.stackTagCompound != null && itemStack.stackTagCompound.hasKey("LastBlock");
    }

    private void saveBlockPosition(ItemStack itemStack , EntityPlayer player , String block, int xBlockPos, int yBlockPos, int zBlockPos)
    {
        if (itemStack.stackTagCompound == null)
        {
            itemStack.setTagCompound(new NBTTagCompound());
        }

        if (!itemStack.stackTagCompound.hasKey(block))
        {
            itemStack.stackTagCompound.setTag(block, new NBTTagList());
        }

        NBTTagList positionTagList = (NBTTagList)itemStack.stackTagCompound.getTag(block);
        NBTTagCompound positionTag = new NBTTagCompound();

        positionTag.setInteger("x" + block, xBlockPos);
        positionTag.setInteger("y" + block, yBlockPos);
        positionTag.setInteger("z" + block, zBlockPos);
        positionTagList.appendTag(positionTag);

    }

    private void storeBlock(ItemStack itemStack, World world)
    {   if (itemStack.stackTagCompound.hasKey("FirstBlock") && itemStack.stackTagCompound.hasKey("LastBlock"))
    {
        //acquisizione coordinate
        NBTTagList firstPositionTagList = (NBTTagList)itemStack.stackTagCompound.getTag("FirstBlock");
        NBTTagList lastPositionTagList = (NBTTagList)itemStack.stackTagCompound.getTag("LastBlock");
        NBTTagCompound firstPositionTag = (NBTTagCompound) firstPositionTagList.getCompoundTagAt(0);
        NBTTagCompound lastPositionTag = (NBTTagCompound) lastPositionTagList.getCompoundTagAt(0);

        int firstX = firstPositionTag.getInteger("xFirstBlock");
        int firstY = firstPositionTag.getInteger("yFirstBlock");
        int firstZ = firstPositionTag.getInteger("zFirstBlock");

        int lastX = lastPositionTag.getInteger("xLastBlock");
        int lastY = lastPositionTag.getInteger("yLastBlock");
        int lastZ = lastPositionTag.getInteger("zLastBlock");

        //controllo di quale è maggiore e quale minore
        int diffX = lastX - firstX;
        int diffY = lastY - firstY;
        int diffZ = lastZ - firstZ;

        if (firstX > lastX)
        {
            diffX = firstX - lastX;
            int tmp = firstX;
            firstX = lastX;
            lastX = tmp;
        }

        if (firstY > lastY)
        {
            diffY = firstY - lastY;
            int tmp = firstY;
            firstY = lastY;
            lastY = tmp;
        }

        if (firstZ > lastZ)
        {
            diffZ = firstZ - lastZ;
            int tmp = firstZ;
            firstZ = lastZ;
            lastZ = tmp;
        }

        //acquisizione blocchi

        int [] arrayBlock = new int[(diffX + 1) *( diffY + 1) * (diffZ + 1)];


        for (int i = firstZ; i <= lastZ; i++)
        {
            for (int j = firstY; j <= lastY ; j++)
            {
                for (int k = firstX; k <= lastX ; k++)
                {
                    for (int l = 0 ; l < arrayBlock.length ; l++)
                    {
                        arrayBlock[l] = Block.getIdFromBlock(world.getBlock(k, j, i));
                        world.setBlockToAir(k, j, i);
                    }
                }
            }
        }

        itemStack.stackTagCompound.setIntArray("blockArray", arrayBlock );
        itemStack.stackTagCompound.setBoolean("blockStored", true);
    }
    }

    private void placeBlock(ItemStack itemStack, World world)
    {
        if (itemStack.stackTagCompound.getBoolean("blockStored"))
        {
            MovingObjectPosition selectedBlock = Minecraft.getMinecraft().objectMouseOver;
            if (selectedBlock != null && selectedBlock.typeOfHit == MovingObjectType.BLOCK)
            {
                int xBlockPos = selectedBlock.blockX;
                int yBlockPos = selectedBlock.blockY;
                int zBlockPos = selectedBlock.blockZ;
            }


        }

        itemStack.stackTagCompound.removeTag("blockArray");
    }
}