Added new recipes, fixed conveyor bug

packer/src/io/anuke/mindustry/Generators.java

@@ -27,6 +27,9 @@ public class Generators {
                 Image image = context.get(regions[0]);
 
                 for(TextureRegion region : regions){
+                    if(region == null){
+                        context.err("Error in block \"{0}\": null region!", block.name);
+                    }
                     image.draw(region);
                 }
 

packer/src/io/anuke/mindustry/PackerLauncher.java

@@ -8,6 +8,7 @@ import java.io.IOException;
 public class PackerLauncher {
 
     public static void main(String[] args) throws IOException {
+        Vars.headless = true;
         ImageContext context = new ImageContext();
         context.load();
         Timers.mark();