From 0e6514e7bd1adcdf582b14b45345ee5ddd8790b6 Mon Sep 17 00:00:00 2001
From: Edward Patel <edward.patel@memention.com>
Date: Sun, 5 Apr 2015 04:13:34 +0200
Subject: [PATCH] Bug fix! Missed putting z value back in right slot after
 zigzag mod.

---
 Marlin/ultralcd.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Marlin/ultralcd.cpp b/Marlin/ultralcd.cpp
index 42a957dca..138c60df6 100644
--- a/Marlin/ultralcd.cpp
+++ b/Marlin/ultralcd.cpp
@@ -1809,6 +1809,9 @@ static void _lcd_level_bed()
       debounce_click = true;
       int ix = _lcd_level_bed_position % MESH_NUM_X_POINTS;
       int iy = _lcd_level_bed_position / MESH_NUM_X_POINTS;
+      if (iy&1) { // Zig zag
+        ix = (MESH_NUM_X_POINTS - 1) - ix;
+      }
       mbl.set_z(ix, iy, current_position[Z_AXIS]);
       _lcd_level_bed_position++;
       if (_lcd_level_bed_position == MESH_NUM_X_POINTS*MESH_NUM_Y_POINTS) {