Add Relations chunk pattern

patterns/db_files/AllChunks.pat

@@ -26,11 +26,13 @@
 #include "db_files/chunks/FLOW_TEX.hexpat"
 #include "db_files/chunks/FOGZONEVAR.hexpat"
 #include "db_files/chunks/HotRegions.hexpat"
+#include "db_files/chunks/L$_.hexpat"
 #include "db_files/chunks/MAPISRC.hexpat"
 #include "db_files/chunks/Mission_GameSysEAX.hexpat"
 #include "db_files/chunks/MultiBrush.hexpat"
 #include "db_files/chunks/OBJ_MAP.hexpat"
 #include "db_files/chunks/P$_.hexpat"
+#include "db_files/chunks/Relations.hexpat"
 #include "db_files/chunks/RENDPARAMS.hexpat"
 #include "db_files/chunks/ROOM_DB.hexpat"
 #include "db_files/chunks/ROOM_EAX.hexpat"

patterns/db_files/DbFile.pat

@@ -70,6 +70,7 @@ struct TOCEntry {
         ("MissionEAX"): Chunk<AccousticsProperty> mission_eax @ offset;
         ("MultiBrush"): Chunk<MultiBrush> multibrush @ offset;
         ("OBJ_MAP"): Chunk<ObjMap> obj_map @ offset;
+        ("Relations"): Chunk<Relations> relations @ offset;
         ("RENDPARAMS"): Chunk<RendParams> rend_params @ offset;
         ("ROOM_DB"): Chunk<RoomDb> room_db @ offset;
         ("ROOM_EAX"): Chunk<RoomEax> room_eax @ offset;
@@ -88,6 +89,13 @@ struct TOCEntry {
             if (std::string::starts_with(name, "P$")) {
                 Chunk<PropertyMap> property_chunk @ offset [[name(name)]];
             }
+            // if (std::string::starts_with(name, "LD$")) {
+            //     std::print("LD: {}", name);
+            // }
+            if (std::string::starts_with(name, "L$")) {
+                Chunk<LinkMap> link_chunk @ offset [[name(name)]];
+                // std::print("L: {}", name);
+            }
         }
     }
 };

patterns/db_files/chunks/L$_.hexpat

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "Common.hexpat"
+
+bitfield LinkId {
+    id: 16;
+    concrete: 4;
+    relation: 12; 
+};
+
+struct Link {
+    LinkId id;
+    s32 source;
+    s32 destination;
+    u16 relation;
+    // if (source > 0 || destination > 0) {
+    //     std::print("Link: {}, Id: {}, Src: {}, Dest: {}, Flavor: {}", parent.parent.parent.name, id, source, destination, relation);
+    // }
+};
+
+struct LinkMap {
+    u32 max = parent.parent.data_end;
+    Link links[while($ < max)];
+};

patterns/db_files/chunks/Relations.hexpat

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <std/io.pat>
+
+struct RelationString {
+    char name[];
+    $ = $ + 32 - std::string::length(name);
+};
+
+struct Relations {
+    u32 max = parent.parent.data_end;
+    RelationString relations[while($ < max)];
+};