Pass iteration to magnetic source updates

gprMax/solvers.py

@@ -57,7 +57,7 @@ class Solver:
             self.updates.store_snapshots(iteration)
             self.updates.update_magnetic()
             self.updates.update_magnetic_pml()
-            self.updates.update_magnetic_sources()
+            self.updates.update_magnetic_sources(iteration)
             if isinstance(self.updates, SubgridUpdates):
                 self.updates.hsg_2()
             self.updates.update_electric_a()

gprMax/updates/cpu_updates.py

@@ -74,11 +74,11 @@ class CPUUpdates(Updates):
         for pml in self.grid.pmls["slabs"]:
             pml.update_magnetic()
 
-    def update_magnetic_sources(self):
+    def update_magnetic_sources(self, iteration):
         """Updates magnetic field components from sources."""
         for source in self.grid.transmissionlines + self.grid.magneticdipoles:
             source.update_magnetic(
-                self.grid.iteration,
+                iteration,
                 self.grid.updatecoeffsH,
                 self.grid.ID,
                 self.grid.Hx,

gprMax/updates/updates.py

@@ -48,7 +48,7 @@ class Updates(ABC):
         pass
 
     @abstractmethod
-    def update_magnetic_sources(self) -> None:
+    def update_magnetic_sources(self, iteration: int) -> None:
         """Updates magnetic field components from sources."""
         pass