
using OrdinaryDiffEq
using Trixi

###############################################################################
# semidiscretization of the compressible Euler equations

equations = CompressibleEulerEquations3D(1.4)

initial_condition = initial_condition_convergence_test
source_terms = source_terms_convergence_test

volume_flux  = flux_ranocha
solver = DGMulti(element_type = Hex(),
                 approximation_type = periodic_derivative_operator(
                   derivative_order=1, accuracy_order=4, xmin=0.0, xmax=1.0, N=20),
                 surface_flux = flux_lax_friedrichs,
                 volume_integral = VolumeIntegralFluxDifferencing(volume_flux))

mesh = DGMultiMesh(solver, coordinates_min=(-1.0, -1.0, -1.0),
                           coordinates_max=( 1.0,  1.0,  1.0))

semi = SemidiscretizationHyperbolic(mesh, equations, initial_condition, solver;
                                    source_terms=source_terms)


###############################################################################
# ODE solvers, callbacks etc.

tspan = (0.0, 0.4)
ode = semidiscretize(semi, tspan)

summary_callback = SummaryCallback()

analysis_interval = 100
analysis_callback = AnalysisCallback(semi, interval=analysis_interval, uEltype=real(solver))

alive_callback = AliveCallback(analysis_interval=analysis_interval)

callbacks = CallbackSet(summary_callback,
                        analysis_callback, alive_callback)


###############################################################################
# run the simulation

sol = solve(ode, RDPK3SpFSAL49(), abstol = 1.0e-7, reltol = 1.0e-7,
            save_everystep = false, callback = callbacks)
summary_callback() # print the timer summary
