first attempt of a particle ID enum

include/ParticleID.hpp

+/*
+ * ParticleID.hpp
+ * 
+ * Copyright 2018 Maximilian Reininghaus <maximilian.reininghaus@kit.edu>
+ * 
+ * This file is part of ngC.
+ * 
+ * ngC is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * ngC is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+namespace ngc
+{
+    enum class ParticleID // copy of CORSIKA's particle IDs
+    {
+        GAMMA = 1,
+        POSITRON = 2,
+        ELECTRON = 3,
+        MU_P = 5,
+        MU_M = 6,
+        PI_0 = 7,
+        PI_P = 8,
+        PI_M = 9,
+        K_L_0 = 10,
+        K_P = 11,
+        K_M = 12,
+        N = 13,
+        P = 14,
+        PBAR = 15,
+        K_S_0 = 16,
+        ETA = 17,
+        LAMBDA = 18,
+        SIGMA_P = 19,
+        SIGMA_0 = 20,
+        SIGMA_M = 21,
+        XI_0 = 22,
+        XI_M = 23,
+        OMEGA_M = 24,
+        N_BAR = 25,
+        LAMBDA_BAR = 26,
+        SIGMA_BAR_M = 27,
+        SIGMA_BAR_0 = 28,
+        SIGMA_BAR_P = 29,
+        XI_BAR_0 = 30,
+        XI_BAR_PLUS = 31,
+        OMEGA_BAR_PLUS = 32
+        
+        // to be continued...
+    };
+}