From 05f3ebcb3b6a62f56ab420402e604a222de4a790 Mon Sep 17 00:00:00 2001
From: erocs <github@erocs.org>
Date: Sun, 8 Sep 2013 12:06:15 -0700
Subject: [PATCH] Hopper Customisations

Allows editing hopper cooldowns and amount transferred per tick.

diff --git a/src/main/java/net/minecraft/world/level/block/entity/TileEntityHopper.java b/src/main/java/net/minecraft/world/level/block/entity/TileEntityHopper.java
index d2e67cfa4..4c29bf524 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/TileEntityHopper.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/TileEntityHopper.java
@@ -142,9 +142,14 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
         tileentityhopper.tickedGameTime = world.getTime();
         if (!tileentityhopper.j()) {
             tileentityhopper.setCooldown(0);
-            a(world, blockposition, iblockdata, tileentityhopper, () -> {
+            // Spigot start
+            boolean result = a(world, blockposition, iblockdata, tileentityhopper, () -> {
                 return a(world, (IHopper) tileentityhopper);
             });
+            if (!result && tileentityhopper.level.spigotConfig.hopperCheck > 1) {
+                tileentityhopper.setCooldown(tileentityhopper.level.spigotConfig.hopperCheck);
+            }
+            // Spigot end
         }
 
     }
@@ -165,7 +170,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
                 }
 
                 if (flag) {
-                    tileentityhopper.setCooldown(8);
+                    tileentityhopper.setCooldown(world.spigotConfig.hopperTransfer); // Spigot
                     a(world, blockposition, iblockdata);
                     return true;
                 }
@@ -208,7 +213,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
                         // ItemStack itemstack1 = addItem(iinventory, iinventory1, iinventory.splitStack(i, 1), enumdirection);
 
                         // CraftBukkit start - Call event when pushing items into other inventories
-                        CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.splitStack(i, 1));
+                        CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.splitStack(i, world.spigotConfig.hopperAmount)); // Spigot
 
                         Inventory destinationInventory;
                         // Have to special case large chests as they work oddly
@@ -222,9 +227,10 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
                         world.getCraftServer().getPluginManager().callEvent(event);
                         if (event.isCancelled()) {
                             hopper.setItem(i, itemstack);
-                            hopper.setCooldown(8); // Delay hopper checks
+                            hopper.setCooldown(world.spigotConfig.hopperTransfer); // Spigot
                             return false;
                         }
+                        int origCount = event.getItem().getAmount(); // Spigot
                         ItemStack itemstack1 = addItem(iinventory, iinventory1, CraftItemStack.asNMSCopy(event.getItem()), enumdirection);
                         // CraftBukkit end
 
@@ -233,6 +239,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
                             return true;
                         }
 
+                        itemstack.subtract(origCount - itemstack1.getCount()); // Spigot
                         iinventory.setItem(i, itemstack);
                     }
                 }
@@ -267,7 +274,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
             EnumDirection enumdirection = EnumDirection.DOWN;
 
             return c(iinventory, enumdirection) ? false : a(iinventory, enumdirection).anyMatch((i) -> {
-                return a(ihopper, iinventory, i, enumdirection);
+                return a(ihopper, iinventory, i, enumdirection, world); // Spigot
             });
         } else {
             Iterator iterator = b(world, ihopper).iterator();
@@ -286,14 +293,14 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
         }
     }
 
-    private static boolean a(IHopper ihopper, IInventory iinventory, int i, EnumDirection enumdirection) {
+    private static boolean a(IHopper ihopper, IInventory iinventory, int i, EnumDirection enumdirection, World world) { // Spigot
         ItemStack itemstack = iinventory.getItem(i);
 
         if (!itemstack.isEmpty() && b(iinventory, itemstack, i, enumdirection)) {
             ItemStack itemstack1 = itemstack.cloneItemStack();
             // ItemStack itemstack2 = addItem(iinventory, ihopper, iinventory.splitStack(i, 1), (EnumDirection) null);
             // CraftBukkit start - Call event on collection of items from inventories into the hopper
-            CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.splitStack(i, 1));
+            CraftItemStack oitemstack = CraftItemStack.asCraftMirror(iinventory.splitStack(i, world.spigotConfig.hopperAmount)); // Spigot
 
             Inventory sourceInventory;
             // Have to special case large chests as they work oddly
@@ -310,13 +317,13 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
                 iinventory.setItem(i, itemstack1);
 
                 if (ihopper instanceof TileEntityHopper) {
-                    ((TileEntityHopper) ihopper).setCooldown(8); // Delay hopper checks
+                    ((TileEntityHopper) ihopper).setCooldown(world.spigotConfig.hopperTransfer); // Spigot
                 } else if (ihopper instanceof EntityMinecartHopper) {
-                    ((EntityMinecartHopper) ihopper).setCooldown(4); // Delay hopper minecart checks
+                    ((EntityMinecartHopper) ihopper).setCooldown(world.spigotConfig.hopperTransfer / 2); // Spigot
                 }
-
                 return false;
             }
+            int origCount = event.getItem().getAmount(); // Spigot
             ItemStack itemstack2 = addItem(iinventory, ihopper, CraftItemStack.asNMSCopy(event.getItem()), null);
             // CraftBukkit end
 
@@ -325,6 +332,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
                 return true;
             }
 
+            itemstack1.subtract(origCount - itemstack2.getCount()); // Spigot
             iinventory.setItem(i, itemstack1);
         }
 
@@ -388,6 +396,11 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
             boolean flag1 = iinventory1.isEmpty();
 
             if (itemstack1.isEmpty()) {
+                // Spigot start - SPIGOT-6693, InventorySubcontainer#setItem
+                if (!itemstack.isEmpty() && itemstack.getCount() > iinventory1.getMaxStackSize()) {
+                    itemstack = itemstack.cloneAndSubtract(iinventory1.getMaxStackSize());
+                }
+                // Spigot end
                 iinventory1.setItem(i, itemstack);
                 itemstack = ItemStack.EMPTY;
                 flag = true;
@@ -415,7 +428,7 @@ public class TileEntityHopper extends TileEntityLootable implements IHopper {
                             }
                         }
 
-                        tileentityhopper.setCooldown(8 - b0);
+                        tileentityhopper.setCooldown(tileentityhopper.level.spigotConfig.hopperTransfer - b0); // Spigot
                     }
                 }
 
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index e432ddc50..4d50f803b 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -205,4 +205,20 @@ public class SpigotWorldConfig
         otherTrackingRange = getInt( "entity-tracking-range.other", otherTrackingRange );
         log( "Entity Tracking Range: Pl " + playerTrackingRange + " / An " + animalTrackingRange + " / Mo " + monsterTrackingRange + " / Mi " + miscTrackingRange + " / Other " + otherTrackingRange );
     }
+
+    public int hopperTransfer;
+    public int hopperCheck;
+    public int hopperAmount;
+    private void hoppers()
+    {
+        // Set the tick delay between hopper item movements
+        hopperTransfer = getInt( "ticks-per.hopper-transfer", 8 );
+        if ( SpigotConfig.version < 11 )
+        {
+            set( "ticks-per.hopper-check", 1 );
+        }
+        hopperCheck = getInt( "ticks-per.hopper-check", 1 );
+        hopperAmount = getInt( "hopper-amount", 1 );
+        log( "Hopper Transfer: " + hopperTransfer + " Hopper Check: " + hopperCheck + " Hopper Amount: " + hopperAmount );
+    }
 }
-- 
2.25.1