craftbukkit/nms-patches/net/minecraft/world/entity/item/EntityTNTPrimed.patch

--- a/net/minecraft/world/entity/item/EntityTNTPrimed.java
+++ b/net/minecraft/world/entity/item/EntityTNTPrimed.java
@@ -17,6 +17,12 @@
 import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.state.IBlockData;
 
+// CraftBukkit start;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.entity.EntityRemoveEvent;
+import org.bukkit.event.entity.ExplosionPrimeEvent;
+// CraftBukkit end
+
 public class EntityTNTPrimed extends Entity implements TraceableEntity {
 
     private static final DataWatcherObject<Integer> DATA_FUSE_ID = DataWatcher.defineId(EntityTNTPrimed.class, DataWatcherRegistry.INT);
@@ -26,6 +32,8 @@
     public static final String TAG_FUSE = "fuse";
     @Nullable
     public EntityLiving owner;
+    public float yield = 4; // CraftBukkit - add field
+    public boolean isIncendiary = false; // CraftBukkit - add field
 
     public EntityTNTPrimed(EntityTypes<? extends EntityTNTPrimed> entitytypes, World world) {
         super(entitytypes, world);
@@ -79,10 +87,13 @@
 
         this.setFuse(i);
         if (i <= 0) {
-            this.discard();
+            // CraftBukkit start - Need to reverse the order of the explosion and the entity death so we have a location for the event
+            // this.discard();
             if (!this.level().isClientSide) {
                 this.explode();
             }
+            this.discard(EntityRemoveEvent.Cause.EXPLODE); // CraftBukkit - add Bukkit remove cause
+            // CraftBukkit end
         } else {
             this.updateInWaterStateAndDoFluidPushing();
             if (this.level().isClientSide) {
@@ -93,9 +104,14 @@
     }
 
     private void explode() {
-        float f = 4.0F;
+        // CraftBukkit start
+        // float f = 4.0F;
+        ExplosionPrimeEvent event = CraftEventFactory.callExplosionPrimeEvent((org.bukkit.entity.Explosive)this.getBukkitEntity());
 
-        this.level().explode(this, this.getX(), this.getY(0.0625D), this.getZ(), 4.0F, World.a.TNT);
+        if (!event.isCancelled()) {
+            this.level().explode(this, this.getX(), this.getY(0.0625D), this.getZ(), event.getRadius(), event.getFire(), World.a.TNT);
+        }
+        // CraftBukkit end
     }
 
     @Override