Multi-Sided Sign Support

paper/src/main/java/com/denizenscript/denizen/paper/utilities/PaperAPIToolsImpl.java

@@ -28,6 +28,7 @@
 import net.md_5.bungee.api.chat.BaseComponent;
 import org.bukkit.*;
 import org.bukkit.block.Sign;
+import org.bukkit.block.sign.Side;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.*;
 import org.bukkit.event.entity.CreatureSpawnEvent;
@@ -104,15 +105,36 @@ public String getPlayerListName(Player player) {
     public String[] getSignLines(Sign sign) {
         String[] output = new String[4];
         int i = 0;
-        for (Component component : sign.lines()) {
+        List<Component> list = NMSHandler.getVersion().isAtLeast(NMSVersion.v1_20) ? sign.getSide(Side.FRONT).lines() : sign.lines();
+        for (Component component : list) {
+            output[i++] = PaperModule.stringifyComponent(component);
+        }
+        return output;
+    }
+
+    @Override
+    public String[] getBackSignLines(Sign sign) {
+        String[] output = new String[4];
+        int i = 0;
+        for (Component component : sign.getSide(Side.BACK).lines()) {
             output[i++] = PaperModule.stringifyComponent(component);
         }
         return output;
     }
 
     @Override
     public void setSignLine(Sign sign, int line, String text) {
-        sign.line(line, PaperModule.parseFormattedText(text == null ? "" : text, ChatColor.BLACK));
+        if (NMSHandler.getVersion().isAtLeast(NMSVersion.v1_20)) {
+            sign.getSide(Side.FRONT).line(line, PaperModule.parseFormattedText(text == null ? "" : text, ChatColor.BLACK));
+        }
+        else {
+            sign.line(line, PaperModule.parseFormattedText(text == null ? "" : text, ChatColor.BLACK));
+        }
+    }
+
+    @Override
+    public void setBackSignLine(Sign sign, int line, String text) {
+        sign.getSide(Side.BACK).line(line, PaperModule.parseFormattedText(text == null ? "" : text, ChatColor.BLACK));
     }
 
     @Override