ActuallyAdditions/src/main/java/de/ellpeck/actuallyadditions/mod/items/ItemChestToCrateUpgrade.java

/*
 * This file ("ItemChestToCrateUpgrade.java") is part of the Actually Additions mod for Minecraft.
 * It is created and owned by Ellpeck and distributed
 * under the Actually Additions License to be found at
 * http://ellpeck.de/actaddlicense
 * View the source code at https://github.com/Ellpeck/ActuallyAdditions
 *
 * © 2015-2016 Ellpeck
 */

package de.ellpeck.actuallyadditions.mod.items;

import de.ellpeck.actuallyadditions.mod.items.base.ItemBase;
import de.ellpeck.actuallyadditions.mod.util.StackUtil;
import net.minecraft.block.Block;
import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.EnumRarity;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumActionResult;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.EnumHand;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public class ItemChestToCrateUpgrade extends ItemBase{

    private final Class<? extends IInventory> start;
    private final IBlockState end;

    public ItemChestToCrateUpgrade(String name, Class<? extends IInventory> start, IBlockState end){
        super(name);
        this.start = start;
        this.end = end;
    }

    @Override
    public EnumActionResult onItemUse(ItemStack heldStack, EntityPlayer player, World world, BlockPos pos, EnumHand hand, EnumFacing facing, float par8, float par9, float par10){
        if(player.isSneaking()){
            TileEntity tileHit = world.getTileEntity(pos);
            if(tileHit.getClass() == this.start){
                if(!world.isRemote){

                    //Copy Slots
                    IInventory chest = (IInventory)tileHit;
                    ItemStack[] stacks = new ItemStack[chest.getSizeInventory()];
                    for(int i = 0; i < stacks.length; i++){
                        ItemStack aStack = chest.getStackInSlot(i);
                        if(StackUtil.isValid(aStack)){
                            stacks[i] = aStack.copy();
                            chest.setInventorySlotContents(i, StackUtil.getNull());
                        }
                    }

                    //Set New Block
                    world.playEvent(2001, pos, Block.getStateId(world.getBlockState(pos)));
                    world.setBlockState(pos, this.end, 2);

                    //Copy Items into new Chest
                    TileEntity newTileHit = world.getTileEntity(pos);
                    if(newTileHit instanceof IInventory){
                        IInventory newChest = (IInventory)newTileHit;
                        for(int i = 0; i < stacks.length; i++){
                            if(StackUtil.isValid(stacks[i])){
                                if(newChest.getSizeInventory() > i){
                                    newChest.setInventorySlotContents(i, stacks[i].copy());
                                }
                            }
                        }
                    }

                    if(!player.capabilities.isCreativeMode){
                        player.setHeldItem(hand, StackUtil.addStackSize(heldStack, -1));
                    }
                }
                return EnumActionResult.SUCCESS;
            }
        }

        return super.onItemUse(heldStack, player, world, pos, hand, facing, par8, par9, par10);
    }


    @Override
    public EnumRarity getRarity(ItemStack stack){
        return EnumRarity.RARE;
    }
}