Big one...

I should've commited before, but I wanted to make things compile.

The big change is that I've added a global time step so the parameter
does not need to be passed in each function. This is useful as we are
moving towards using time profiles for boundary conditions and injection
of particles (not in this branch, but in the future and the procedure
will be quite similar)

src/modules/mesh/moduleMesh.f90

@@ -372,10 +372,9 @@ MODULE moduleMesh
     END SUBROUTINE connectMesh_interface
 
     !Prints number of collisions in each cell
-    SUBROUTINE printColl_interface(self, t)
+    SUBROUTINE printColl_interface(self)
       IMPORT meshGeneric
       CLASS(meshGeneric), INTENT(in):: self
-      INTEGER, INTENT(in):: t
 
     END SUBROUTINE printColl_interface
 
@@ -403,18 +402,16 @@ MODULE moduleMesh
 
   ABSTRACT INTERFACE
     !Prints Species data
-    SUBROUTINE printOutput_interface(self, t)
+    SUBROUTINE printOutput_interface(self)
       IMPORT meshParticles
       CLASS(meshParticles), INTENT(in):: self
-      INTEGER, INTENT(in):: t
 
     END SUBROUTINE printOutput_interface
 
     !Prints EM info
-    SUBROUTINE printEM_interface(self, t)
+    SUBROUTINE printEM_interface(self)
       IMPORT meshParticles
       CLASS(meshParticles), INTENT(in):: self
-      INTEGER, INTENT(in):: t
 
     END SUBROUTINE printEM_interface
 
@@ -789,7 +786,7 @@ MODULE moduleMesh
     END FUNCTION findCellBrute
 
     !Computes collisions in element
-    SUBROUTINE doCollisions(self, t)
+    SUBROUTINE doCollisions(self)
       USE moduleCollisions
       USE moduleSpecies
       USE moduleList
@@ -797,10 +794,10 @@ MODULE moduleMesh
       USE moduleRandom
       USE moduleOutput
       USE moduleMath
+      USE moduleCaseParam, ONLY: timeStep
       IMPLICIT NONE
 
       CLASS(meshGeneric), INTENT(inout), TARGET:: self
-      INTEGER, INTENT(in):: t
       INTEGER:: e
       CLASS(meshCell), POINTER:: cell
       INTEGER:: k, i, j
@@ -816,7 +813,7 @@ MODULE moduleMesh
       REAL(8):: rnd_real !Random number for collision
       INTEGER:: rnd_int  !Random number for collision
 
-      IF (MOD(t, everyColl) == 0) THEN
+      IF (MOD(timeStep, everyColl) == 0) THEN
         !Collisions need to be performed in this iteration
         !$OMP DO SCHEDULE(DYNAMIC) PRIVATE(part_i, part_j, partTemp_i, partTemp_j)
         DO e=1, self%numCells