PaperMC/nms-patches/EntitySheep.patch

--- a/net/minecraft/server/EntitySheep.java
+++ b/net/minecraft/server/EntitySheep.java
@@ -8,10 +8,16 @@
 import java.util.stream.Collectors;
 import javax.annotation.Nullable;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.entity.SheepRegrowWoolEvent;
+import org.bukkit.inventory.InventoryView;
+// CraftBukkit end
+
 public class EntitySheep extends EntityAnimal implements IShearable {
 
     private static final DataWatcherObject<Byte> bo = DataWatcher.a(EntitySheep.class, DataWatcherRegistry.a);
-    private static final Map<EnumColor, IMaterial> bp = (Map) SystemUtils.a((Object) Maps.newEnumMap(EnumColor.class), (enummap) -> {
+    private static final Map<EnumColor, IMaterial> bp = (Map) SystemUtils.a(Maps.newEnumMap(EnumColor.class), (enummap) -> { // CraftBukkit - decompile error
         enummap.put(EnumColor.WHITE, Blocks.WHITE_WOOL);
         enummap.put(EnumColor.ORANGE, Blocks.ORANGE_WOOL);
         enummap.put(EnumColor.MAGENTA, Blocks.MAGENTA_WOOL);
@@ -138,6 +144,11 @@
 
         if (itemstack.getItem() == Items.SHEARS) {
             if (!this.world.isClientSide && this.canShear()) {
+                // CraftBukkit start
+                if (!CraftEventFactory.handlePlayerShearEntityEvent(entityhuman, this, itemstack, enumhand)) {
+                    return EnumInteractionResult.PASS;
+                }
+                // CraftBukkit end
                 this.shear(SoundCategory.PLAYERS);
                 itemstack.damage(1, entityhuman, (entityhuman1) -> {
                     entityhuman1.broadcastItemBreak(enumhand);
@@ -158,7 +169,9 @@
         int i = 1 + this.random.nextInt(3);
 
         for (int j = 0; j < i; ++j) {
+            this.forceDrops = true; // CraftBukkit
             EntityItem entityitem = this.a((IMaterial) EntitySheep.bp.get(this.getColor()), 1);
+            this.forceDrops = false; // CraftBukkit
 
             if (entityitem != null) {
                 entityitem.setMot(entityitem.getMot().add((double) ((this.random.nextFloat() - this.random.nextFloat()) * 0.1F), (double) (this.random.nextFloat() * 0.05F), (double) ((this.random.nextFloat() - this.random.nextFloat()) * 0.1F)));
@@ -248,6 +261,12 @@
 
     @Override
     public void blockEaten() {
+        // CraftBukkit start
+        SheepRegrowWoolEvent event = new SheepRegrowWoolEvent((org.bukkit.entity.Sheep) this.getBukkitEntity());
+        this.world.getServer().getPluginManager().callEvent(event);
+
+        if (event.isCancelled()) return;
+        // CraftBukkit end
         this.setSheared(false);
         if (this.isBaby()) {
             this.setAge(60);
@@ -266,7 +285,7 @@
         EnumColor enumcolor = ((EntitySheep) entityanimal).getColor();
         EnumColor enumcolor1 = ((EntitySheep) entityanimal1).getColor();
         InventoryCrafting inventorycrafting = a(enumcolor, enumcolor1);
-        Optional optional = this.world.getCraftingManager().craft(Recipes.CRAFTING, inventorycrafting, this.world).map((recipecrafting) -> {
+        Optional<Item> optional = this.world.getCraftingManager().craft(Recipes.CRAFTING, inventorycrafting, this.world).map((recipecrafting) -> { // Eclipse fail
             return recipecrafting.a(inventorycrafting);
         }).map(ItemStack::getItem);
 
@@ -284,10 +303,18 @@
             public boolean canUse(EntityHuman entityhuman) {
                 return false;
             }
+
+            // CraftBukkit start
+            @Override
+            public InventoryView getBukkitView() {
+                return null; // TODO: O.O
+            }
+            // CraftBukkit end
         }, 2, 1);
 
         inventorycrafting.setItem(0, new ItemStack(ItemDye.a(enumcolor)));
         inventorycrafting.setItem(1, new ItemStack(ItemDye.a(enumcolor1)));
+        inventorycrafting.resultInventory = new InventoryCraftResult(); // CraftBukkit - add result slot for event
         return inventorycrafting;
     }