Fixes to the Brewing Stand for distilling

src/com/dre/brewery/BCauldron.java

@@ -2,6 +2,7 @@ package com.dre.brewery;
 
 import java.util.concurrent.CopyOnWriteArrayList;
 
+import org.bukkit.block.data.BlockData;
 import org.bukkit.block.data.Levelled;
 import org.bukkit.entity.Player;
 import org.bukkit.Material;
@@ -97,12 +98,17 @@ public class BCauldron {
 			if (potion != null) {
 
 				if (P.use1_13) {
-					Levelled cauldron = ((Levelled) block.getBlockData());
+					BlockData data = block.getBlockData();
+					Levelled cauldron = ((Levelled) data);
 					if (cauldron.getLevel() <= 0) {
 						bcauldrons.remove(bcauldron);
 						return false;
 					}
 					cauldron.setLevel(cauldron.getLevel() - 1);
+					// Update the new Level to the Block
+					// We have to use the BlockData variable "data" here instead of the casted "cauldron"
+					// otherwise < 1.13 crashes on plugin load for not finding the BlockData Class
+					block.setBlockData(data);
 
 					if (cauldron.getLevel() <= 0) {
 						bcauldrons.remove(bcauldron);

src/com/dre/brewery/Brew.java

@@ -727,10 +727,12 @@ public class Brew {
 
 		public void colorBrew(PotionMeta meta, ItemStack potion, boolean destillable) {
 			if (P.use1_9) {
-				meta.setBasePotionData(new PotionData(getType()));
 				meta.addItemFlags(ItemFlag.HIDE_POTION_EFFECTS);
 				if (P.use1_12) {
+					// BasePotionData was only used for the Color, so starting with 1.12 we can use setColor instead
 					meta.setColor(getColor());
+				} else {
+					meta.setBasePotionData(new PotionData(getType()));
 				}
 			} else {
 				potion.setDurability(getColorId(destillable));

src/com/dre/brewery/listeners/InventoryListener.java

@@ -124,11 +124,18 @@ public class InventoryListener implements Listener {
 							case 1:
 								// Custom potion but not for distilling. Stop any brewing and cancel this task
 								if (stand.getBrewingTime() > 0) {
-									// Brewing time is sent and stored as short
-									// This sends a negative short value to the Client
-									// In the client the Brewer will look like it is not doing anything
-									stand.setBrewingTime(Short.MAX_VALUE << 1);
+									if (P.use1_12) {
+										// The trick below doesnt work in 1.12, but we dont need it anymore
+										// This should only happen with older Brews that have been made with the old Potion Color System
+										stand.setBrewingTime(Short.MAX_VALUE);
+									} else {
+										// Brewing time is sent and stored as short
+										// This sends a negative short value to the Client
+										// In the client the Brewer will look like it is not doing anything
+										stand.setBrewingTime(Short.MAX_VALUE << 1);
+									}
 									stand.setFuelLevel(fuel);
+									stand.update();
 								}
 							case 0:
 								// No custom potion, cancel and ignore
@@ -148,19 +155,20 @@ public class InventoryListener implements Listener {
 					stand.setBrewingTime((int) ((float) brewTime / ((float) runTime / (float) DISTILLTIME)) + 1);
 
 					if (brewTime <= 1) { // Done!
+						stand.setBrewingTime(0);
+						stand.update();
 						BrewerInventory brewer = stand.getInventory();
 						if (!runDistill(brewer)) {
 							this.cancel();
 							trackedBrewers.remove(brewery);
-							stand.setBrewingTime(0);
 							P.p.debugLog("All done distilling");
 						} else {
 							brewTime = -1; // go again.
-							stand.setBrewingTime(0);
 							P.p.debugLog("Can distill more! Continuing.");
 						}
+					} else {
+						stand.update();
 					}
-					stand.update();
 				} else {
 					this.cancel();
 					trackedBrewers.remove(brewery);

src/com/dre/brewery/listeners/TabListener.java

@@ -17,7 +17,7 @@ public class TabListener implements TabCompleter {
 	private static final List<String> topCompletions = new ArrayList<>(2);
 
 	static {
-		completions.put("", Arrays.asList("info", "unlabel"));
+		completions.put("", Arrays.asList("info", "unlabel", "help"));
 		topCompletions.add("brew");
 		//topCompletions.add("brewery");
 	}