From 15a38820164c01a93c41b98517a210954e5421d3 Mon Sep 17 00:00:00 2001
From: SquidDev <bonzoweb@hotmail.co.uk>
Date: Wed, 21 Feb 2018 14:32:53 +0000
Subject: [PATCH] Fix monitor clear state being cleared without a redraw

---
 .../client/render/TileEntityMonitorRenderer.java      |  2 +-
 .../computercraft/shared/common/ClientTerminal.java   | 11 +++++------
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/src/main/java/dan200/computercraft/client/render/TileEntityMonitorRenderer.java b/src/main/java/dan200/computercraft/client/render/TileEntityMonitorRenderer.java
index ea15ee39f..4d9239cba 100644
--- a/src/main/java/dan200/computercraft/client/render/TileEntityMonitorRenderer.java
+++ b/src/main/java/dan200/computercraft/client/render/TileEntityMonitorRenderer.java
@@ -92,7 +92,7 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
             BufferBuilder renderer = tessellator.getBuffer();
 
             // Get terminal
-            boolean redraw = originTerminal.hasTerminalChanged();
+            boolean redraw = originTerminal.pollTerminalChanged();
 
             // Draw the contents
             GlStateManager.depthMask( false );
diff --git a/src/main/java/dan200/computercraft/shared/common/ClientTerminal.java b/src/main/java/dan200/computercraft/shared/common/ClientTerminal.java
index f4d049302..b959b2c8b 100644
--- a/src/main/java/dan200/computercraft/shared/common/ClientTerminal.java
+++ b/src/main/java/dan200/computercraft/shared/common/ClientTerminal.java
@@ -14,29 +14,28 @@ public class ClientTerminal implements ITerminal
     private boolean m_colour;
     private Terminal m_terminal;
     private boolean m_terminalChanged;
-    private boolean m_terminalChangedLastFrame;
 
     public ClientTerminal( boolean colour )
     {
         m_colour = colour;
         m_terminal = null;
         m_terminalChanged = false;
-        m_terminalChangedLastFrame = false;
     }
 
     public void update()
     {
-        m_terminalChangedLastFrame = m_terminalChanged || (m_terminal != null && m_terminal.getChanged());
         if( m_terminal != null )
         {
+            m_terminalChanged |= m_terminal.getChanged();
             m_terminal.clearChanged();
         }
-        m_terminalChanged = false;
     }
 
-    public boolean hasTerminalChanged()
+    public boolean pollTerminalChanged()
     {
-        return m_terminalChangedLastFrame;
+        boolean changed = m_terminalChanged;
+        m_terminalChanged = false;
+        return changed;
     }
 
     // ITerminal implementation