up3

server/session/handler_mob_equipment.go

@@ -0,0 +1,29 @@
+package session
+
+import (
+	"fmt"
+	"github.com/df-mc/dragonfly/server/world"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+)
+
+// MobEquipmentHandler handles the MobEquipment packet.
+type MobEquipmentHandler struct{}
+
+// Handle ...
+func (*MobEquipmentHandler) Handle(p packet.Packet, s *Session, tx *world.Tx, c Controllable) error {
+	pk := p.(*packet.MobEquipment)
+
+	if pk.EntityRuntimeID != selfEntityRuntimeID {
+		return errSelfRuntimeID
+	}
+	switch pk.WindowID {
+	case protocol.WindowIDOffHand:
+		// This window ID is expected, but we don't handle it.
+		return nil
+	case protocol.WindowIDInventory:
+		return s.VerifyAndSetHeldSlot(int(pk.InventorySlot), stackToItem(s.br, pk.NewItem.Stack), c)
+	default:
+		return fmt.Errorf("only main inventory should be involved in slot change, got window ID %v", pk.WindowID)
+	}
+}