Feat(CS): Add definition files for selection group record type

components/CMakeLists.txt

@@ -166,7 +166,7 @@ add_component_dir (esm3
     inventorystate containerstate npcstate creaturestate dialoguestate statstate npcstats creaturestats
     weatherstate quickkeys fogstate spellstate activespells creaturelevliststate doorstate projectilestate debugprofile
     aisequence magiceffects custommarkerstate stolenitems transport animationstate controlsstate mappings readerscache
-    infoorder timestamp formatversion landrecorddata
+    infoorder timestamp formatversion landrecorddata selectiongroup
     )
 
 add_component_dir (esmterrain

components/esm3/selectiongroup.cpp

@@ -0,0 +1,38 @@
+#include "selectiongroup.hpp"
+
+#include "esmreader.hpp"
+#include "esmwriter.hpp"
+
+namespace ESM
+{
+    void SelectionGroup::load(ESMReader& esm, bool& isDeleted)
+    {
+
+        while (esm.hasMoreSubs())
+        {
+            esm.getSubName();
+            switch (esm.retSubName().toInt())
+            {
+                case fourCC("SELC"):
+                    mId = esm.getRefId();
+                    break;
+                case fourCC("SELI"):
+                    selectedInstances.push_back(esm.getRefId().getRefIdString());
+                    break;
+                default:
+                    esm.fail("Unknown subrecord");
+                    break;
+            }
+        }
+    }
+
+    void SelectionGroup::save(ESMWriter& esm, bool isDeleted) const
+    {
+        esm.writeHNCRefId("SELC", mId);
+        for (std::string id : selectedInstances)
+            esm.writeHNCString("SELI", id);
+    }
+
+    void SelectionGroup::blank() {}
+
+}

components/esm3/selectiongroup.hpp

@@ -0,0 +1,34 @@
+#ifndef COMPONENTS_ESM_SELECTIONGROUP_H
+#define COMPONENTS_ESM_SELECTIONGROUP_H
+
+#include <string>
+
+#include "components/esm/defs.hpp"
+#include "components/esm/refid.hpp"
+
+namespace ESM
+{
+    class ESMReader;
+    class ESMWriter;
+
+    struct SelectionGroup
+    {
+        constexpr static RecNameInts sRecordId = REC_SELG;
+
+        static constexpr std::string_view getRecordType() { return "SelectionGroup"; }
+
+        uint32_t mRecordFlags = 0;
+
+        RefId mId;
+
+        std::vector<std::string> selectedInstances;
+
+        void load(ESMReader& esm, bool& isDeleted);
+        void save(ESMWriter& esm, bool isDeleted = false) const;
+
+        /// Set record to default state (does not touch the ID).
+        void blank();
+    };
+}
+
+#endif