Reconfigured the collision classes to allow for generalization (#1583)

* Reconfigured the collision classes to allow for generalization
* Added literals to PairWiseCoulombCollision
* Minor cleanup of PairWiseCoulombCollision.cpp, removing query of ndt
* Add boilerplate to CollisionBase class
* Fixed white space in CollisionBase.H

Co-authored-by: Axel Huebl <axel.huebl@plasma.ninja>

1 files changed, 36 insertions, 0 deletions

diff --git a/Source/Particles/Collision/CollisionBase.H b/Source/Particles/Collision/CollisionBase.H
new file mode 100644
index 000000000..f40476847
--- /dev/null
+++ b/Source/Particles/Collision/CollisionBase.H
@@ -0,0 +1,36 @@
+/* Copyright 2020 David Grote
+ *
+ * This file is part of WarpX.
+ *
+ * License: BSD-3-Clause-LBNL
+ */
+#ifndef WARPX_PARTICLES_COLLISION_COLLISIONBASE_H_
+#define WARPX_PARTICLES_COLLISION_COLLISIONBASE_H_
+
+#include <AMReX_ParmParse.H>
+#include <AMReX_Vector.H>
+
+// Forward declaration needed
+class MultiParticleContainer;
+
+class CollisionBase
+{
+public:
+
+    CollisionBase (std::string collision_name);
+
+    virtual void doCollisions (amrex::Real /*cur_time*/, MultiParticleContainer* /*mypc*/ ){}
+
+    CollisionBase(CollisionBase const &) = delete;
+    CollisionBase(CollisionBase &&) = delete;
+    CollisionBase & operator=(CollisionBase const &) = delete;
+
+    virtual ~CollisionBase() = default;
+protected:
+
+    amrex::Vector<std::string> m_species_names;
+    int m_ndt;
+
+};
+
+#endif // WARPX_PARTICLES_COLLISION_COLLISIONBASE_H_