PaperMC/nms-patches/TileEntityBrewingStand.patch

--- a/net/minecraft/server/TileEntityBrewingStand.java
+++ b/net/minecraft/server/TileEntityBrewingStand.java
@@ -2,6 +2,13 @@
 
 import java.util.Arrays;
 
+// CraftBukkit start
+import java.util.List;
+import org.bukkit.craftbukkit.entity.CraftHumanEntity;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.event.inventory.BrewEvent;
+// CraftBukkit end
+
 public class TileEntityBrewingStand extends TileEntityContainer implements ITickable, IWorldInventory {
 
     private static final int[] a = new int[] { 3};
@@ -13,9 +20,35 @@
     private Item k;
     private String l;
     private int m;
+    private int lastTick = MinecraftServer.currentTick; // CraftBukkit - add field
 
     public TileEntityBrewingStand() {}
 
+    // CraftBukkit start - add fields and methods
+    public List<HumanEntity> transaction = new java.util.ArrayList<HumanEntity>();
+    private int maxStack = 64;
+
+    public void onOpen(CraftHumanEntity who) {
+        transaction.add(who);
+    }
+
+    public void onClose(CraftHumanEntity who) {
+        transaction.remove(who);
+    }
+
+    public List<HumanEntity> getViewers() {
+        return transaction;
+    }
+
+    public ItemStack[] getContents() {
+        return this.items;
+    }
+
+    public void setMaxStackSize(int size) {
+        maxStack = size;
+    }
+    // CraftBukkit end
+
     public String getName() {
         return this.hasCustomName() ? this.l : "container.brewing";
     }
@@ -46,9 +79,14 @@
         boolean flag = this.n();
         boolean flag1 = this.brewTime > 0;
 
+        // CraftBukkit start - Use wall time instead of ticks for brewing
+        int elapsedTicks = MinecraftServer.currentTick - this.lastTick;
+        this.lastTick = MinecraftServer.currentTick;
+
         if (flag1) {
-            --this.brewTime;
-            boolean flag2 = this.brewTime == 0;
+            this.brewTime -= elapsedTicks;
+            boolean flag2 = this.brewTime <= 0; // == -> <=
+            // CraftBukkit end
 
             if (flag2 && flag) {
                 this.o();
@@ -124,6 +162,15 @@
 
     private void o() {
         ItemStack itemstack = this.items[3];
+        // CraftBukkit start
+        if (getOwner() != null) {
+            BrewEvent event = new BrewEvent(world.getWorld().getBlockAt(position.getX(), position.getY(), position.getZ()), (org.bukkit.inventory.BrewerInventory) this.getOwner().getInventory());
+            org.bukkit.Bukkit.getPluginManager().callEvent(event);
+            if (event.isCancelled()) {
+                return;
+            }
+        }
+        // CraftBukkit end
 
         for (int i = 0; i < 3; ++i) {
             this.items[i] = PotionBrewer.d(itemstack, this.items[i]);
@@ -216,7 +263,7 @@
     }
 
     public int getMaxStackSize() {
-        return 64;
+        return this.maxStack; // CraftBukkit
     }
 
     public boolean a(EntityHuman entityhuman) {