feat: optimize spread growth like bamboo

src/main/java/org/alvindimas05/lagassist/microfeatures/GrowableStack.java

@@ -9,31 +9,43 @@
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.BlockGrowEvent;
+import org.bukkit.event.block.BlockSpreadEvent;
 import org.bukkit.inventory.ItemStack;
 
 public class GrowableStack implements Listener {
 	private static WeakHashMap<Chunk, WeakHashMap<Material, Integer>> counts = new WeakHashMap<>();
 
-	@EventHandler
-	public void onCropGrowdth(BlockGrowEvent e) {
+	public <T> void onCropGrow(T e) {
 		if (!Main.config.getBoolean("microfeatures.stack-growables.enable")) {
 			return;
 		}
 
-		BlockState b = e.getNewState();
-		Chunk chk = b.getChunk();
+		BlockState b = null;
+		if(e instanceof BlockGrowEvent) {
+			b = ((BlockGrowEvent) e).getNewState();
+		}
+		if(e instanceof BlockSpreadEvent) {
+			b = ((BlockSpreadEvent) e).getNewState();
+		}
+
+        assert b != null;
+        Chunk chk = b.getChunk();
 
 		Material mat = b.getType();
-		
+
 		if (!Main.config.getStringList("microfeatures.stack-growables.blocks").contains(mat.toString())) {
 			return;
 		}
-		
+
 		int current = counts.getOrDefault(chk, new WeakHashMap<>()).getOrDefault(mat, 0) + 1;
 		int stacksize = Main.config.getInt("microfeatures.stack-growables.stacksize");
-
-		e.setCancelled(true);
 
+		if(e instanceof BlockGrowEvent) {
+			((BlockGrowEvent) e).setCancelled(true);
+		}
+		if(e instanceof BlockSpreadEvent) {
+			((BlockSpreadEvent) e).setCancelled(true);
+		}
 		if (current % stacksize == 0) {
 			b.getLocation().getWorld().dropItemNaturally(b.getLocation(), new ItemStack(mat, stacksize));
 			// Main.sendDebug("Cactus stack in chunk " + chk.getX() + " " + chk.getZ() + " at " + current + " for " + mat.toString(), 2);
@@ -50,4 +62,13 @@ public void onCropGrowdth(BlockGrowEvent e) {
 		});
 	}
 
+	@EventHandler
+	public void onBlockGrow(BlockGrowEvent e) {
+		onCropGrow(e);
+	}
+
+	@EventHandler
+	public void onBlockSpread(BlockSpreadEvent e) {
+		onCropGrow(e);
+	}
 }