From b646757a1b7e1a49fc4e91685307a316dd2f662b Mon Sep 17 00:00:00 2001
From: Knutwurst <36196269+knutwurst@users.noreply.github.com>
Date: Wed, 14 Jun 2023 11:04:00 +0200
Subject: [PATCH] Implement 4MAX Pro 2.0 assisted level feature.

---
 .../extui/knutwurst/anycubic_touchscreen.cpp  | 49 ++++++++++++++++++-
 1 file changed, 47 insertions(+), 2 deletions(-)

diff --git a/Marlin/src/lcd/extui/knutwurst/anycubic_touchscreen.cpp b/Marlin/src/lcd/extui/knutwurst/anycubic_touchscreen.cpp
index 6e21e802..096d7bfb 100755
--- a/Marlin/src/lcd/extui/knutwurst/anycubic_touchscreen.cpp
+++ b/Marlin/src/lcd/extui/knutwurst/anycubic_touchscreen.cpp
@@ -1616,10 +1616,55 @@ void AnycubicTouchscreenClass::RenderCurrentFolder(uint16_t selectedNumber) {
                       }
                       break;
 
-                    case 32: // a32 clean leveling beep flag
-                      break;
                   #endif
 
+                  #if ENABLED(KNUTWURST_4MAXP2)
+
+                    case 30: // a30 assist leveling
+                      if (!isPrintingFromMedia()) {
+
+                        if (CodeSeen('S')) {
+                          injectCommands(F("G28\nM420 S0\nG90\nG1 Z5\nG1 X15 Y15 F4000\nG1 Z0"));
+                        } else if (CodeSeen('O')) {
+                          injectCommands(F("G90\nG1 Z5\nG1 X15 Y15 F4000\nG1 Z0"));
+                        } else if (CodeSeen('T')) {
+                          injectCommands(F("G90\nG1 Z5\nG1 X255 Y15 F4000\nG1 Z0"));
+                        } else if (CodeSeen('C')) {
+                          injectCommands(F("G90\nG1 Z5\nG1 X255 Y195 F4000\nG1 Z0"));
+                        } else if (CodeSeen('Q')) {
+                          injectCommands(F("G90\nG1 Z5\nG1 X15 Y195 F4000\nG1 Z0"));
+                        } else if (CodeSeen('H') || CodeSeen('L')) {
+                          if (CodeSeen('L')) {
+                            injectCommands(F("G90\nG1 Z10\nG1 X15 Y15 F4000\nM420 S1"));
+                          }
+                        }
+                      }
+                      SENDLINE_PGM("");
+
+                      break;
+
+                    case 31: // a31 zoffset
+                      if (!isPrintingFromMedia()) {
+
+                        if (CodeSeen('S')) {
+                          SENDLINE_PGM("A9V ");
+                          LCD_SERIAL.print(getZOffset_mm() * 100, 2);
+                          SENDLINE_PGM("");
+                        }
+                        if (CodeSeen('D')) {
+                          const_float_t newOffset = CodeValue() / 100;
+                          setZOffset_mm(newOffset);
+                          injectCommands(F("M500"));
+                        }
+                      }
+                      SENDLINE_PGM("");
+                      break;
+                    #endif // #if ENABLED(KNUTWURST_4MAXP2)
+
+
+                    case 32: // a32 clean leveling beep flag
+                      break;
+                  
                     case 33: // A33 get version info
                       SEND_PGM("J33 ");
                       SEND_PGM("KW-");