// Spigot start
// Helper method for scheduleTicks. If the hopper at x0, y0, z0 is pointed
// at this tile entity, then make it active.
private void scheduleTick(int x0, int y0, int z0) {
TileEntity tileEntity = world.getTileEntity(x0, y0, z0);
if (tileEntity instanceof TileEntityHopper && tileEntity.world != null) {
// i is the metadeta assoiated with the direction the hopper faces.
int i = BlockHopper.b(tileEntity.p());
// Facing class provides arrays for direction offset.
if (tileEntity.x + Facing.b[i] == x
&& tileEntity.y + Facing.c[i] == y
&& tileEntity.z + Facing.d[i] == z) {
((TileEntityHopper) tileEntity).makeTick();
}
}
}
