items and struture loading

data/blocks.go

@@ -69,6 +69,7 @@ func LookupBlockByStateId(version string, stateId int32) (block *Block, ok bool)
 		if b.MinStateId <= stateId && stateId <= b.MaxStateId {
 			block = b
 			ok = true
+			return
 		}
 	}
 	return
@@ -100,6 +101,8 @@ func FromBlockState(version string, stateId int32) (b *Block, stateData map[stri
 	return
 }
 
+// TODO: mc stores these as strings so we will do the same
+
 func mcDataBlockStateTypeParse(n int32, s *BlockState) (v any, err error) {
 	switch s.Type {
 	case "int":

data/item.go

@@ -0,0 +1,49 @@
+package data
+
+//   {
+//    "id": 2,
+//    "name": "granite",
+//    "displayName": "Granite",
+//    "stackSize": 64
+//  },
+
+type Item struct {
+	Id          int32
+	Name        string
+	DisplayName string
+	StackSize   int32
+}
+
+var ItemsCache = make(map[string][]*Item)
+
+func ItemsForVersion(v string) (ret []*Item) {
+	var ok bool
+	if ret, ok = ItemsCache[v]; ok {
+		return
+	}
+	var b []*Item
+	must(LoadVersionedJson(v, "items", &b))
+	ItemsCache[v] = b
+	return b
+}
+
+func LookupItemById(version string, id int32) (item *Item, ok bool) {
+	for _, i := range ItemsForVersion(version) {
+		if i.Id == id {
+			item = i
+			ok = true
+			return
+		}
+	}
+	return
+}
+
+func LookupItemByName(version string, name string) (item *Item, ok bool) {
+	for _, i := range ItemsForVersion(version) {
+		if i.Name == name {
+			item = i
+			ok = true
+		}
+	}
+	return
+}