sync hotbar slot on login

main.c

@@ -67,6 +67,7 @@ void handlePacket (int client_fd, int length, int packet_id) {
         for (uint8_t i = 0; i < 82; i += 2) {
           sc_setContainerSlot(client_fd, 0, serverSlotToClientSlot(i / 2), inventory[i + 1], inventory[i]);
         }
+        sc_setHeldItem(client_fd, *(inventory - 1));
 
         sc_setDefaultSpawnPosition(client_fd, 8, 80, 8);
         sc_startWaitingForChunks(client_fd);

src/packets.c

@@ -545,6 +545,17 @@ int cs_setHeldItem (int client_fd) {
   return 0;
 }
 
+// S->C Set Held Item (clientbound)
+int sc_setHeldItem (int client_fd, uint8_t slot) {
+
+  writeVarInt(client_fd, sizeVarInt(0x62) + 1);
+  writeVarInt(client_fd, 0x62);
+
+  writeByte(client_fd, slot);
+
+  return 0;
+}
+
 // S->C Registry Data (Multiple packets)
 int sc_registries (int client_fd) {
 

src/packets.h

@@ -23,6 +23,7 @@ int sc_setCenterChunk (int client_fd, int x, int y);
 int sc_chunkDataAndUpdateLight (int client_fd, int _x, int _z);
 int sc_keepAlive (int client_fd);
 int sc_setContainerSlot (int client_fd, int container, uint16_t slot, uint8_t count, uint8_t item);
+int sc_setHeldItem (int client_fd, uint8_t slot);
 int sc_registries(int client_fd);
 
 #endif