From 92ac133f2b6c788636ec3f57bb8dd95d81c14d23 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Fri, 20 May 2016 15:48:27 -0700
Subject: [PATCH] Conditionals and Sanity Check for SINGLENOZZLE

---
 Marlin/Conditionals.h | 10 ++++++++++
 Marlin/SanityCheck.h  |  4 +++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/Marlin/Conditionals.h b/Marlin/Conditionals.h
index 4583a0a5f..386f836d2 100644
--- a/Marlin/Conditionals.h
+++ b/Marlin/Conditionals.h
@@ -539,6 +539,16 @@
 
   #define ARRAY_BY_EXTRUDERS1(v1) ARRAY_BY_EXTRUDERS(v1, v1, v1, v1)
 
+  /**
+   * With SINGLENOZZLE all "extruders" are in the same place
+   */
+  #if ENABLED(SINGLENOZZLE)
+    #undef EXTRUDER_OFFSET_X
+    #undef EXTRUDER_OFFSET_Y
+    #define EXTRUDER_OFFSET_X { 0 }
+    #define EXTRUDER_OFFSET_Y { 0 }
+  #endif
+
   /**
    * Z_DUAL_ENDSTOPS endstop reassignment
    */
diff --git a/Marlin/SanityCheck.h b/Marlin/SanityCheck.h
index c499c2c96..3a6e6a895 100644
--- a/Marlin/SanityCheck.h
+++ b/Marlin/SanityCheck.h
@@ -149,7 +149,9 @@
     #error "EXTRUDERS must be 1 with Z_DUAL_STEPPER_DRIVERS."
   #endif
 
-#endif // EXTRUDERS > 1
+#elif ENABLED(SINGLENOZZLE)
+  #error "SINGLENOZZLE requires 2 or more EXTRUDERS."
+#endif
 
 /**
  * Limited number of servos