Adds Smoothieware flavor to Gcode, to avoid some weirdness in the new motion controls.

Avoids resetting extrusion axis after firmware retract (still resets after unretract)
with smoothieware.

README.md

@@ -132,7 +132,7 @@ The author of the Silk icon set is Mark James.
                             (default: 100,100)
         --z-offset          Additional height in mm to add to vertical coordinates
                             (+/-, default: 0)
-        --gcode-flavor      The type of G-code to generate (reprap/teacup/makerware/sailfish/mach3/machinekit/no-extrusion,
+        --gcode-flavor      The type of G-code to generate (reprap/teacup/makerware/sailfish/mach3/machinekit/smoothie/no-extrusion,
                             default: reprap)
         --use-relative-e-distances Enable this to get relative E values (default: no)
         --use-firmware-retraction  Enable firmware-controlled retraction using G10/G11 (default: no)

lib/Slic3r/Config.pm

@@ -236,7 +236,7 @@ sub validate {
         if !first { $_ eq $self->gcode_flavor } @{$Options->{gcode_flavor}{values}};
     
     die "--use-firmware-retraction is only supported by Marlin firmware\n"
-        if $self->use_firmware_retraction && $self->gcode_flavor ne 'reprap' && $self->gcode_flavor ne 'machinekit';
+        if $self->use_firmware_retraction && $self->gcode_flavor ne 'smoothie' && $self->gcode_flavor ne 'reprap' && $self->gcode_flavor ne 'machinekit';
     
     die "--use-firmware-retraction is not compatible with --wipe\n"
         if $self->use_firmware_retraction && first {$_} @{$self->wipe};

slic3r.pl

@@ -296,7 +296,7 @@ $j
                         (default: 100,100)
     --z-offset          Additional height in mm to add to vertical coordinates
                         (+/-, default: $config->{z_offset})
-    --gcode-flavor      The type of G-code to generate (reprap/teacup/makerware/sailfish/mach3/machinekit/no-extrusion,
+    --gcode-flavor      The type of G-code to generate (reprap/teacup/makerware/sailfish/mach3/machinekit/smoothie/no-extrusion,
                         default: $config->{gcode_flavor})
     --use-relative-e-distances Enable this to get relative E values (default: no)
     --use-firmware-retraction  Enable firmware-controlled retraction using G10/G11 (default: no)

xs/src/libslic3r/GCode.cpp

@@ -4,6 +4,8 @@
 #include <cstdlib>
 #include <math.h>
 
+#define FLAVOR_IS(val) this->config.gcode_flavor == val
+
 namespace Slic3r {
 
 AvoidCrossingPerimeters::AvoidCrossingPerimeters()
@@ -700,7 +702,7 @@ GCode::retract(bool toolchange)
         methods even if we performed wipe, since this will ensure the entire retraction
         length is honored in case wipe path was too short.  */
     gcode += toolchange ? this->writer.retract_for_toolchange() : this->writer.retract();
-    
+    if (!(FLAVOR_IS(gcfSmoothie) && this->config.use_firmware_retraction))
         gcode += this->writer.reset_e();
     if (this->writer.extruder()->retract_length() > 0 || this->config.use_firmware_retraction)
         gcode += this->writer.lift();

xs/src/libslic3r/GCodeWriter.cpp

@@ -54,7 +54,7 @@ GCodeWriter::preamble()
         gcode << "G21 ; set units to millimeters\n";
         gcode << "G90 ; use absolute coordinates\n";
     }
-    if (FLAVOR_IS(gcfRepRap) || FLAVOR_IS(gcfTeacup)) {
+    if (FLAVOR_IS(gcfRepRap) || FLAVOR_IS(gcfTeacup) || FLAVOR_IS(gcfSmoothie)) {
         if (this->config.use_relative_e_distances) {
             gcode << "M83 ; use relative distances for extrusion\n";
         } else {

xs/src/libslic3r/PrintConfig.cpp

@@ -468,6 +468,7 @@ PrintConfigDef::PrintConfigDef()
     def->enum_values.push_back("sailfish");
     def->enum_values.push_back("mach3");
     def->enum_values.push_back("machinekit");
+    def->enum_values.push_back("smoothie");
     def->enum_values.push_back("no-extrusion");
     def->enum_labels.push_back("RepRap (Marlin/Sprinter/Repetier)");
     def->enum_labels.push_back("Teacup");
@@ -475,6 +476,7 @@ PrintConfigDef::PrintConfigDef()
     def->enum_labels.push_back("Sailfish (MakerBot)");
     def->enum_labels.push_back("Mach3/LinuxCNC");
     def->enum_labels.push_back("Machinekit");
+    def->enum_labels.push_back("Smoothieware");
     def->enum_labels.push_back("No extrusion");
     def->default_value = new ConfigOptionEnum<GCodeFlavor>(gcfRepRap);
 

xs/src/libslic3r/PrintConfig.hpp

@@ -9,7 +9,7 @@
 namespace Slic3r {
 
 enum GCodeFlavor {
-    gcfRepRap, gcfTeacup, gcfMakerWare, gcfSailfish, gcfMach3, gcfMachinekit, gcfNoExtrusion,
+    gcfRepRap, gcfTeacup, gcfMakerWare, gcfSailfish, gcfMach3, gcfMachinekit, gcfNoExtrusion, gcfSmoothie,
 };
 
 enum InfillPattern {
@@ -34,6 +34,7 @@ template<> inline t_config_enum_values ConfigOptionEnum<GCodeFlavor>::get_enum_v
     keys_map["mach3"]           = gcfMach3;
     keys_map["machinekit"]      = gcfMachinekit;
     keys_map["no-extrusion"]    = gcfNoExtrusion;
+    keys_map["smoothie"]    = gcfSmoothie;
     return keys_map;
 }