PaperMC/paper-server/nms-patches/net/minecraft/world/entity/vehicle/EntityMinecartTNT.patch

--- a/net/minecraft/world/entity/vehicle/EntityMinecartTNT.java
+++ b/net/minecraft/world/entity/vehicle/EntityMinecartTNT.java
@@ -23,6 +23,10 @@
 import net.minecraft.world.level.block.state.IBlockData;
 import net.minecraft.world.level.material.Fluid;
 
+// CraftBukkit start
+import org.bukkit.event.entity.ExplosionPrimeEvent;
+// CraftBukkit end
+
 public class EntityMinecartTNT extends EntityMinecartAbstract {
 
     private static final byte EVENT_PRIME = 10;
@@ -115,7 +119,15 @@
                 d1 = 5.0D;
             }
 
-            this.level().explode(this, damagesource, (ExplosionDamageCalculator) null, this.getX(), this.getY(), this.getZ(), (float) (4.0D + this.random.nextDouble() * 1.5D * d1), false, World.a.TNT);
+            // CraftBukkit start
+            ExplosionPrimeEvent event = new ExplosionPrimeEvent(this.getBukkitEntity(), (float) (4.0D + this.random.nextDouble() * 1.5D * d1), false);
+            this.level().getCraftServer().getPluginManager().callEvent(event);
+            if (event.isCancelled()) {
+                fuse = -1;
+                return;
+            }
+            this.level().explode(this, damagesource, (ExplosionDamageCalculator) null, this.getX(), this.getY(), this.getZ(), event.getRadius(), event.getFire(), World.a.TNT);
+            // CraftBukkit end
             this.discard();
         }