Improved the new-style config file and its reader

phigrape.conf

@@ -0,0 +1,89 @@
+######################
+# GENERAL PARAMETERS #
+######################
+
+
+# Plummer softening parameter (can be even 0)
+eps =                                   1E-4
+
+# End time of the calculation
+t_end =                                 4.0
+
+# Interval of snapshot files output (xxxxxx.dat)
+dt_disk =                               1.0
+
+# Interval for the energy control output (contr.dat)
+dt_contr =                              0.125
+
+# Interval for SMBH output (bh.dat, bh_neighbors.dat, and bh_inf.dat)
+dt_bh =                                 0.125
+
+# Parameter for timestep determination
+eta =                                   0.01
+
+# Name of the input file; use "data.con" in most cases
+inp_data =                              data.con
+
+
+##### NOT IMPLEMENTED #######################
+output_format = HDF5
+dt_min_warning =                         true
+#############################################
+
+###################################
+# LIVE SUPERMASSIVE BLACK HOLE(S) #
+###################################
+
+# There is special treatment for particles representing supermassive black holes (SMBHs): they are integrated at every time step, they can have custom softening in SMBH-SMBH interactions, and post Newtonian terms can be added to the gravity.
+
+# The number of SMBH particles. Can be 0 (no SMBH), 1, or 2. [default: 0]
+live_smbh_count =                       2
+
+# Custom softening length for SMBH-SMBH interactions (can also be zero). If non-negative, the custom softening is applied. [default: -1]
+live_smbh_custom_eps =                  0
+
+# Output additional diagnostics about live SMBHs. [default: false]
+#TODO# dt_bh
+live_smbh_output =                      true
+
+# Output additional diagnostics about the SMBH's (or SMBHs') nearest neighbours (number could be set as shown below). [default: false]
+live_smbh_neighbor_output =             true
+
+# Number of nearest neighbours to the SMBH (or SMBHs) to include in output. [default: 10]
+live_smbh_neighbor_number =             10
+
+##################################
+# BINARY SUPERMASSIVE BLACK HOLE #
+##################################
+
+# The following parameters can be set when `live_smbh_count` is 2.
+
+# Output additional diagnostics about the SMBH's sphere of influence (size could be set as shown below). [default: false]
+binary_smbh_influence_sphere_output =   true
+
+# The influence sphere is centred at the binary SMBH's centre of mass, and its radius is the semi-major axis of the binary times the factor below. [default: 10.0]
+binary_smbh_influence_radius_factor =   3.162277660168379497918067e+03
+
+# Add post Newtonian terms to SMBH-SMBH gravity. [default: false]
+binary_smbh_pn =                        true
+
+####################################
+# Negative powers of two           #
+####################################
+#  -1  1/2      0.5                #
+#  -2  1/4      0.25               #
+#  -3  1/8      0.125              #
+#  -4  1/16     0.0625             #
+#  -5  1/32     0.03125            #
+#  -6  1/64     0.015625           #
+#  -7  1/128    0.0078125          #
+#  -8  1/256    0.00390625         #
+#  -9  1/512    0.001953125        #
+# -10  1/1024   0.0009765625       #
+# -11  1/2048   0.00048828125      #
+# -12  1/4096   0.000244140625     #
+# -13  1/8192   0.0001220703125    #
+# -14  1/16384  0.00006103515625   #
+# -15  1/32768  0.000030517578125  #
+# -16  1/65536  0.0000152587890625 #
+####################################