A few more .idx realisations, and some parsing code

cmd/loader/main.go

@@ -201,8 +201,12 @@ func loadFonts() {
 
 func loadIdx() {
 	idxPath := filepath.Join(*gamePath, "Idx", "WarHammer.idx")
-	_, err := idx.Load(idxPath)
+	idx, err := idx.Load(idxPath)
 	if err != nil {
 		log.Fatalf("Failed to parse %s as idx: %v", idxPath, err)
 	}
+
+	for i, group := range idx.Groups {
+		log.Printf("Group %2d: %4d records, start sprite is %6d", i, len(group.Records), group.Spec.SpriteIdx)
+	}
 }