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Replication

EquipmentComponent fully replicates:
  • Equipped items array
  • Visual updates

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Authority

All equipment changes are validated on the server. Client calls automatically forward to the server via RPC: 
UFUNCTION(Server, Reliable)
void Server_EquipItem(FItemInstance Item, int32 SlotIndex);

UFUNCTION(Server, Reliable)
void Server_UnequipItem(int32 SlotIndex);

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Visual Updates

Visuals rebuild from the replicated EquippedItems array on each client automatically via OnRep_EquippedItems. If visuals are out of sync, call: 
UFUNCTION(NetMulticast, Reliable)
void Multicast_UpdateVisuals(int32 SlotIndex);

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Multiplayer Helper Functions

bool bIsServer   = EquipmentComponent->IsAuthority();    // True if running on server
bool bIsLocal    = EquipmentComponent->IsLocalPlayer();  // True if local player's equipment
Use IsLocalPlayer() to skip cosmetic-only visual work on simulated proxies.

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Debugging

// Call in PIE to print full equipment state to the Output Log
EquipmentComponent->PrintDebugState();
PrintDebugState is also a CallInEditor button on the component — click it while PIE is paused to diagnose visual sync issues without writing any code.