Fix symbolic links (#754)

src/main/java/carpet/script/CarpetScriptServer.java

@@ -26,6 +26,7 @@ import net.minecraft.util.WorldSavePath;
 import net.minecraft.util.math.BlockPos;
 
 import java.io.IOException;
+import java.nio.file.FileVisitOption;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
@@ -136,6 +137,7 @@ public class CarpetScriptServer
     {
         try {
             Path folder = server.getSavePath(WorldSavePath.ROOT).resolve("scripts");
+            if (!Files.exists(folder)) 
                 Files.createDirectories(folder);
             Optional<Path>
             scriptPath = Files.list(folder)
@@ -149,6 +151,7 @@ public class CarpetScriptServer
             if (FabricLoader.getInstance().getEnvironmentType() == EnvType.CLIENT)
             {
                 Path globalFolder = FabricLoader.getInstance().getConfigDir().resolve("carpet/scripts");
+                if (!Files.exists(globalFolder)) 
                     Files.createDirectories(globalFolder);
                 scriptPath = Files.walk(globalFolder)
                         .filter(script -> script.getFileName().toString().equalsIgnoreCase(name + ".sc") ||
@@ -194,6 +197,7 @@ public class CarpetScriptServer
         }
         try {
             Path worldScripts = server.getSavePath(WorldSavePath.ROOT).resolve("scripts");
+            if (!Files.exists(worldScripts)) 
                 Files.createDirectories(worldScripts);
             Files.list(worldScripts)
                 .filter(f -> f.toString().endsWith(".sc"))
@@ -202,8 +206,9 @@ public class CarpetScriptServer
             if (includeBuiltIns && (FabricLoader.getInstance().getEnvironmentType() == EnvType.CLIENT))
             {
                 Path globalScripts = FabricLoader.getInstance().getConfigDir().resolve("carpet/scripts");
+                if (!Files.exists(globalScripts))
                     Files.createDirectories(globalScripts);
-                Files.walk(globalScripts)
+                Files.walk(globalScripts, FileVisitOption.FOLLOW_LINKS)
                     .filter(f -> f.toString().endsWith(".sc"))
                     .forEach(f -> moduleNames.add(f.getFileName().toString().replaceFirst("\\.sc$","").toLowerCase(Locale.ROOT)));
             }