From 3d6ff79adaff68ad0344797c9d67074478ebe9f9 Mon Sep 17 00:00:00 2001
From: ineternet <33813737+ineternet@users.noreply.github.com>
Date: Tue, 9 Jan 2018 18:02:36 +0100
Subject: [PATCH] Fixed issue with pattern overwriting (#1610)

* Fixed issue with pattern overwriting

Pattern overwriting if the blank pattern (top slot in the pattern slots) slot was empty. Fixed this by only considering a recipe invalid if there are *absolutely no* patterns available, meaning none in top and none in bottom.

* Fixed a line

typo, sorry

* fixed patternAvailable, returned opposite

* Updated name to isPatternAvailable

* Added newest change to the changelog

Second line in the 1.5.32 version added.
---
 CHANGELOG.md                                              | 1 +
 .../apiimpl/network/node/NetworkNodeGrid.java             | 8 ++++++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2bb6a24d2..4ced1d9b2 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ### 1.5.32
 - Added Spanish translation (Samuelrock)
+- Fixed issue where the Pattern Grid can only overwrite patterns when blank ones are present (ineternet)
 
 ### 1.5.31
 - Improved the "cannot craft! loop in processing..." error message (raoulvdberge)
diff --git a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeGrid.java b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeGrid.java
index 5a0734834..9d4ab9133 100755
--- a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeGrid.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeGrid.java
@@ -491,9 +491,13 @@ public class NetworkNodeGrid extends NetworkNode implements IGrid {
             patterns.setStackInSlot(1, pattern);
         }
     }
+    
+    private boolean isPatternAvailable() {
+        return !(patterns.getStackInSlot(0).isEmpty() && patterns.getStackInSlot(1).isEmpty());
+    }
 
     public boolean canCreatePattern() {
-        if (patterns.getStackInSlot(0).isEmpty()) {
+        if (!isPatternAvailable()) {
             return false;
         }
 
@@ -515,7 +519,7 @@ public class NetworkNodeGrid extends NetworkNode implements IGrid {
 
             return inputsFilled > 0 && outputsFilled > 0;
         } else {
-            return !result.getStackInSlot(0).isEmpty();
+            return isPatternAvailable();
         }
     }