add from/to switches on block grows event

plugin/src/main/java/com/denizenscript/denizen/events/block/BlockGrowsScriptEvent.java

@@ -1,8 +1,11 @@
 package com.denizenscript.denizen.events.block;
 
+import com.denizenscript.denizen.nms.NMSHandler;
+import com.denizenscript.denizen.nms.NMSVersion;
 import com.denizenscript.denizen.objects.LocationTag;
 import com.denizenscript.denizen.objects.MaterialTag;
 import com.denizenscript.denizen.events.BukkitScriptEvent;
+import com.denizenscript.denizen.objects.properties.material.MaterialAge;
 import com.denizenscript.denizencore.objects.ObjectTag;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
@@ -20,13 +23,15 @@ public class BlockGrowsScriptEvent extends BukkitScriptEvent implements Listener
     // @Group Block
     //
     // @Switch in:<area> to only process the event if it occurred within a specified area.
+    // @Switch from:<age> to only process the event if the material started at a specific age.
+    // @Switch to:<age> to only process the event if the material ended at a specific age.
     //
     // @Cancellable true
     //
     // @Triggers when a block grows naturally in the world, EG, when wheat, sugar canes, cacti, watermelons or pumpkins grow.
     // @Context
-    // <context.location> returns the LocationTag of the block that grew.
-    // <context.material> returns the MaterialTag of the block that grew.
+    // <context.location> returns the LocationTag of the block that grew (still at original material state when event fires).
+    // <context.material> returns the MaterialTag of the block's newly grown state.
     //
     // -->
 
@@ -60,6 +65,13 @@ public boolean matches(ScriptPath path) {
         if (!tryMaterial(material, path.eventArgLowerAt(0))) {
             return false;
         }
+        if (NMSHandler.getVersion().isAtLeast(NMSVersion.v1_13) && MaterialAge.describes(material)) {
+            int oldState = MaterialAge.getFrom(new MaterialTag(location.getBlockState())).getCurrent();
+            int newState = MaterialAge.getFrom(material).getCurrent();
+            if (!path.checkSwitch("from", String.valueOf(oldState)) || !path.checkSwitch("to", String.valueOf(newState))) {
+                return false;
+            }
+        }
         return super.matches(path);
     }