Heavy-flavour jet production and charm fragmentation with ALICE at LHC

Heavy quarks, produced in hard parton scatterings in the early stage of ultra-relativistic heavy-ion collisions, are ideal probes to investigate the properties of the Quark--Gluon Plasma (QGP) produced in such collisions. Measurements of heavy-flavour jets can provide constraints on energy-loss models. In particular, they add information on how the radiated energy is dissipated in the medium. Studies of angular correlations between heavy-flavour and charged particles allow us to characterize the heavy-quark fragmentation process and its possible modification in a hot nuclear matter environment. This manuscript will focus on the latest results on heavy-flavour jets and D-meson correlations with charged particles studied with the ALICE detector in pp, p--Pb and Pb--Pb collisions.