QoL improvements

Exporting sim data before running a simulation no longer breaks the program.
Export name number starts from the biggest one in the file folder instead of 0.

src/files.py

@@ -35,7 +35,7 @@ def natural_sort(l):
     return sorted(l, key=alphanum_key)
 
 
-def get_export_names():
+def get_export_names(filepath, exports_path):
     r"""
     Return a list with the names of the files in the folder /Exports.
 
@@ -45,7 +45,7 @@ def get_export_names():
         Save files names.
     """
     if exports_path == "":
-        return []
+        exports_path = filepath
     filenames = natural_sort(os.listdir(exports_path))
     for i, filename in enumerate(filenames):
         # Removes the .csv
@@ -95,7 +95,7 @@ def get_sitl_modules_names(filepath):
 def export_plots(file_name, filepath, names, data, T):
     global exports_path
     file_name += "_0"
-    export_names = get_export_names()
+    export_names = get_export_names(filepath, exports_path)
 
     number_found = False
     counter = 0

src/simulation/main_simulation.py

@@ -998,6 +998,9 @@ def export_plots(file_name):
         if name != "Off":
             names_to_csv.append(name)
     plots_to_csv = [t_plot]
+    if first_plot == []:
+        print("There is nothing to export, please run a simulation.")
+        return None
     if first_plot[0] != None:
         plots_to_csv.append(first_plot)
     if second_plot[0] != None: