From 3b4c2b1dec40a1347ee181752a689113c29c6699 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20N=C3=BCcke?= <florian@nuecke.de>
Date: Sun, 10 Jan 2021 16:24:55 +0100
Subject: [PATCH] Make computer emit block update after bus scan finishes.
 Necessary because this may lead to newly available capabilities from new
 devices.

---
 .../li/cil/oc2/common/tileentity/ComputerTileEntity.java   | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/java/li/cil/oc2/common/tileentity/ComputerTileEntity.java b/src/main/java/li/cil/oc2/common/tileentity/ComputerTileEntity.java
index 983327d6..e6c42394 100644
--- a/src/main/java/li/cil/oc2/common/tileentity/ComputerTileEntity.java
+++ b/src/main/java/li/cil/oc2/common/tileentity/ComputerTileEntity.java
@@ -311,12 +311,19 @@ public final class ComputerTileEntity extends AbstractTileEntity implements ITic
             world.notifyNeighborsOfStateChange(getPos(), getBlockState().getBlock());
         }
 
+        final AbstractDeviceBusController.BusState oldBusState = busController.getState();
         busController.scan();
         setBusState(busController.getState());
         if (busState != AbstractDeviceBusController.BusState.READY) {
             return;
         }
 
+        if (oldBusState != AbstractDeviceBusController.BusState.READY) {
+            // Bus just became ready, meaning new devices may be available, meaning new
+            // capabilities may be available, so we need to tell our neighbors.
+            world.notifyNeighborsOfStateChange(getPos(), getBlockState().getBlock());
+        }
+
         switch (runState) {
             case STOPPED:
                 break;