refactor package

pkg/protocol/slot/component.go

@@ -0,0 +1,23 @@
+package slot
+
+import pk "github.com/Tnze/go-mc/net/packet"
+
+type Component interface {
+	Type() ComponentID
+	ID() string
+
+	pk.Field
+}
+
+type ComponentID int32
+type componentCreator func() Component
+
+var components = make(map[ComponentID]componentCreator)
+
+func ComponentFromID(id ComponentID) Component {
+	return components[id]()
+}
+
+func RegisterComponent(c componentCreator) {
+	components[c().Type()] = c
+}