  With the aim of clarifying the nature of the supernova events from stars
having initial (at the main sequence) masses larger than $\sim
8$-$10\,M_{\odot}$, we have developed a specifically tailored radiation
hydrodynamics Lagrangian code, that enables us to simulate the evolution of the
main observables (light curve, evolution of photospheric velocity and
temperature) in these events. The code features and some test-case simulations
as well as the possible applications of the code are briefly discussed.
