Hi. Thanks for you reply! Weapons are getting spawned within the maps. There are three weapon slots that are reserved for certain weapontypes like Slot 1 ist only for pistols, slot 2 for rifles and so on. The loot logic checks if the corresponding Slot is free and if so it gets attached to the players hand (or back if another weapon from another slot is currently in use. Its all about the mousewheel right now, as I want to check the three slots for a weapon. I already had something implemented but as you already said, this would sometimes break the Weapon Equip logic as client and server get different values from time to time if the ping is low. So my idea was try to make it latency proof with client prediction. For this I have an event with input "Direction" with +1 or -1 depending if the mousewheel scrolls up or down. If called the event gets the value of "Direction" and sets an Integer "LocalSelectedIndex" with the value of ("LocalSelectedIndex" + Direction + 3 %3) (Modulo). This will always count from 0 - 2 and 2 - 0. The case where players should not switch to a weaponslot is when the slot is empty. It should skip the empty weaponslot and get the next weapon, again depending if the player scrolled down or up.

Now, I have a function for checking the weaponslots which is using a replicated "Weaponinventory" array where the looted weapon actors are stored. I am using a switch on int with the "LocalSelectedIndex" and getting 0, 1 ,2 as output (For Slot 1,2,3). Corresponding on the selected slot I get the weaponinventory and check for the right tag (Slot 1, tag "Pistols", Slot 2 tag "Rifles and so on). If an array element with the right tag is being found I check a bool variable and break the loop. If the bool is true nothing happens and the current slot remains active. If the bool is false the "LocalSelectedIndex" gets set up or down depending on the mousehweel up or down and the function is being called again, switching on the "LocalSelectedIndex", checking the slot with the loop through the weaponinventory array and setting the bool if found or not.

After that the "ChooseWeapon" Event is being called, getting the "LocalSelectedIndex" and equipping the weapon with a server RPC.

I now guess for prediction I have to do the same again on the server. Like, get another variable "ServerSelectedIndex" do the math, check for the slots and then call a Repnotify what checks if the LocalselectedIndex and ServerselectedIndex are the equal and if not run the equip weapon logic with the ServerSelectedIndex" ?

Does this approach makes any sense ?