/**
 * Spawns a new cart entity using the provided item.
 * <p/>
 * The backing item must implement <code>IMinecartItem</code> and/or extend
 * <code>ItemMinecart</code>.
 * <p/>
 * Generally Forge requires all cart items to extend ItemMinecart.
 *
 * @param owner The player name that should used as the owner
 * @param cart  An ItemStack containing a cart item, will not be changed by
 *              the function
 * @param world The World object
 * @param x     x-Coord
 * @param y     y-Coord
 * @param z     z-Coord
 * @return the cart placed or null if failed
 * @see IMinecartItem, ItemMinecart
 */
public static EntityMinecart placeCart(GameProfile owner, ItemStack cart, WorldServer world, int x, int y, int z) {
    if (cart == null)
        return null;
    cart = cart.copy();
    if (cart.getItem() instanceof IMinecartItem) {
        IMinecartItem mi = (IMinecartItem) cart.getItem();
        return mi.placeCart(owner, cart, world, x, y, z);
    } else if (cart.getItem() instanceof ItemMinecart)
        try {
            boolean placed = cart.getItem().onItemUse(cart, FakePlayerFactory.get(world, railcraftProfile), world, x, y, z
                    , 0, 0, 0, 0);
            if (placed) {
                List<EntityMinecart> carts = getMinecartsAt(world, x, y, z, 0.3f);
                if (carts.size() > 0) {
                    setCartOwner(carts.get(0), owner);
                    return carts.get(0);
                }
            }
        } catch (Exception e) {
            return null;
        }

    return null;
}
 

public static FakePlayer get(WorldServer world) {
    FakePlayer ret = GREGTECH_PLAYER != null ? GREGTECH_PLAYER.get() : null;
    if (ret == null) {
        ret = FakePlayerFactory.get(world, GREGTECH);
        GREGTECH_PLAYER = new WeakReference<>(ret);
    }
    return ret;
}
 

public static EntityPlayerMP makePlacer(@Nonnull World world, @Nonnull BlockPos pos, @Nullable Entity entity) {
	if (entity instanceof EntityPlayerMP) {
		return (EntityPlayerMP) entity;
	}
	EntityPlayerMP bro = FakePlayerFactory.get((WorldServer) world, PLACER);
	bro.moveToBlockPosAndAngles(pos, 0, -90);
	bro.setSneaking(true);
	return bro;
}
 

public static boolean placeBlock(@Nonnull World world, @Nonnull BlockPos pos, @Nonnull EnumFacing facing, @Nonnull ItemStack stack) {
	if (!world.isBlockLoaded(pos)) return false;

	FakePlayer player = FakePlayerFactory.get((WorldServer) world, PLACER);
	player.moveToBlockPosAndAngles(pos, 0, -90);
	player.setHeldItem(EnumHand.MAIN_HAND, stack);
	player.setSneaking(true);

	if (!hasEditPermission(pos, player)) return false;

	EnumActionResult result = player.interactionManager.processRightClickBlock(
			player, world, stack, EnumHand.MAIN_HAND,
			pos, facing, 0, 0, 0);
	return result != EnumActionResult.FAIL;
}
 

public static EntityPlayerMP makeBreaker(@Nonnull World world, @Nonnull BlockPos pos, @Nullable Entity entity) {
	if (entity instanceof EntityPlayerMP) {
		return (EntityPlayerMP) entity;
	}
	EntityPlayerMP bro = FakePlayerFactory.get((WorldServer) world, BREAKER);
	bro.moveToBlockPosAndAngles(pos, 0, -90);
	return bro;
}
 

@Nonnull
private FakePlayer getPlayer()
{
    if (this.fakePlayer == null)
    {
        int dim = this.getWorld().provider.getDimension();

        this.fakePlayer = FakePlayerFactory.get((WorldServer) this.getWorld(),
                new GameProfile(new UUID(dim, dim), Reference.MOD_ID + ":drawbridge"));
    }

    return this.fakePlayer;
}
 

private EntityPlayer getFakePlayer(){
    return FakePlayerFactory.get((WorldServer)worldObj, new GameProfile(null, "Sentry Turret"));
}