should fix hotbar swaps messing with other players' held items

Author: beanbag44

src/main/java/com/lambda/mixin/entity/PlayerInventoryMixin.java

@@ -17,6 +17,7 @@
 
 package com.lambda.mixin.entity;
 
+import com.lambda.Lambda;
 import com.lambda.interaction.request.hotbar.HotbarManager;
 import com.llamalad7.mixinextras.injector.ModifyExpressionValue;
 import net.minecraft.entity.player.PlayerInventory;
@@ -29,6 +30,7 @@ public class PlayerInventoryMixin {
     @SuppressWarnings({"MixinAnnotationTarget"})
     @ModifyExpressionValue(method = "*", at = @At(value = "FIELD", target = "Lnet/minecraft/entity/player/PlayerInventory;selectedSlot:I", opcode = Opcodes.GETFIELD))
     private int modifySelectedSlot(int original) {
+        if (((PlayerInventory) ((Object) this)).player != Lambda.getMc().player) return original;
         final int hotbarSlot = HotbarManager.getActiveSlot();
         if (hotbarSlot == -1) return original;
         return hotbarSlot;