PaperMC/nms-patches/BlockRedstoneOre.patch

--- a/net/minecraft/server/BlockRedstoneOre.java
+++ b/net/minecraft/server/BlockRedstoneOre.java
@@ -3,6 +3,11 @@
 import java.util.Random;
 import javax.annotation.Nullable;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.entity.EntityInteractEvent;
+// CraftBukkit end
+
 public class BlockRedstoneOre extends Block {
 
     private final boolean a;
@@ -21,23 +26,45 @@
     }
 
     public void attack(World world, BlockPosition blockposition, EntityHuman entityhuman) {
-        this.interact(world, blockposition);
+        this.interact(world, blockposition, entityhuman); // CraftBukkit - add entityhuman
         super.attack(world, blockposition, entityhuman);
     }
 
     public void stepOn(World world, BlockPosition blockposition, Entity entity) {
-        this.interact(world, blockposition);
-        super.stepOn(world, blockposition, entity);
+        // CraftBukkit start
+        // this.interact(world, blockposition);
+        // super.stepOn(world, blockposition, entity);
+        if (entity instanceof EntityHuman) {
+            org.bukkit.event.player.PlayerInteractEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callPlayerInteractEvent((EntityHuman) entity, org.bukkit.event.block.Action.PHYSICAL, blockposition, null, null, null);
+            if (!event.isCancelled()) {
+                this.interact(world, blockposition, entity); // add entity
+                super.stepOn(world, blockposition, entity);
+            }
+        } else {
+            EntityInteractEvent event = new EntityInteractEvent(entity.getBukkitEntity(), world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ()));
+            world.getServer().getPluginManager().callEvent(event);
+            if (!event.isCancelled()) {
+                this.interact(world, blockposition, entity); // add entity
+                super.stepOn(world, blockposition, entity);
+            }
+        }
+        // CraftBukkit end
     }
 
+
     public boolean interact(World world, BlockPosition blockposition, IBlockData iblockdata, EntityHuman entityhuman, EnumHand enumhand, @Nullable ItemStack itemstack, EnumDirection enumdirection, float f, float f1, float f2) {
-        this.interact(world, blockposition);
+        this.interact(world, blockposition, entityhuman); // CraftBukkit - add entityhuman
         return super.interact(world, blockposition, iblockdata, entityhuman, enumhand, itemstack, enumdirection, f, f1, f2);
     }
 
-    private void interact(World world, BlockPosition blockposition) {
+    private void interact(World world, BlockPosition blockposition, Entity entity) { // CraftBukkit - add Entity
         this.playEffect(world, blockposition);
         if (this == Blocks.REDSTONE_ORE) {
+            // CraftBukkit start
+            if (CraftEventFactory.callEntityChangeBlockEvent(entity, blockposition.getX(), blockposition.getY(), blockposition.getZ(), Blocks.LIT_REDSTONE_ORE, 0).isCancelled()) {
+                return;
+            }
+            // CraftBukkit end
             world.setTypeUpdate(blockposition, Blocks.LIT_REDSTONE_ORE.getBlockData());
         }
 
@@ -45,6 +72,11 @@
 
     public void b(World world, BlockPosition blockposition, IBlockData iblockdata, Random random) {
         if (this == Blocks.LIT_REDSTONE_ORE) {
+            // CraftBukkit start
+            if (CraftEventFactory.callBlockFadeEvent(world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ()), Blocks.REDSTONE_ORE).isCancelled()) {
+                return;
+            }
+            // CraftBukkit end
             world.setTypeUpdate(blockposition, Blocks.REDSTONE_ORE.getBlockData());
         }
 
@@ -65,12 +97,25 @@
 
     public void dropNaturally(World world, BlockPosition blockposition, IBlockData iblockdata, float f, int i) {
         super.dropNaturally(world, blockposition, iblockdata, f, i);
+        /* CraftBukkit start - Delegated to getExpDrop
         if (this.getDropType(iblockdata, world.random, i) != Item.getItemOf(this)) {
             int j = 1 + world.random.nextInt(5);
 
             this.dropExperience(world, blockposition, j);
         }
+        // */
+
+    }
+
+    @Override
+    public int getExpDrop(World world, IBlockData data, int i) {
+        if (this.getDropType(data, world.random, i) != Item.getItemOf(this)) {
+            int j = 1 + world.random.nextInt(5);
 
+            return j;
+        }
+        return 0;
+        // CraftBukkit end
     }
 
     private void playEffect(World world, BlockPosition blockposition) {