public boolean hurt(DamageSource var0, float var1) {
        if (this.isInvulnerableTo(var0)) {
            return false;
        }
        if (var0.getEntity() instanceof EnderDragon) {
            return false;
        }
        if (!this.isRemoved() && !this.level.isClientSide) {
            this.remove(Entity.RemovalReason.KILLED);
            if (!var0.isExplosion()) {
                DamageSource var2 = var0.getEntity() != null ? DamageSource.explosion(this, var0.getEntity()) : null;
                this.level.explode(this, var2, null, this.getX(), this.getY(), this.getZ(), 6.0f, false, Level.ExplosionInteraction.BLOCK);
            }
            this.onDestroyedBy(var0);
        }
        return true;
    }

   public void tryRespawn() {
        if (this.dragonKilled && this.respawnStage == null) {
            BlockPos var0 = this.portalLocation;
            if (var0 == null) {
                LOGGER.debug("Tried to respawn, but need to find the portal first.");
                BlockPattern.BlockPatternMatch var1 = this.findExitPortal();
                if (var1 == null) {
                    LOGGER.debug("Couldn't find a portal, so we made one.");
                    this.spawnExitPortal(true);
                } else {
                    LOGGER.debug("Found the exit portal & saved its location for next time.");
                }
                var0 = this.portalLocation;
            }
            ArrayList var2 = Lists.newArrayList();
            BlockPos var3 = var0.above(1);
            for (Direction var4 : Direction.Plane.HORIZONTAL) {
                List<EndCrystal> var5 = this.level.getEntitiesOfClass(EndCrystal.class, new AABB(var3.relative(var4, 2)));
                if (var5.isEmpty()) {
                    return;
                }
                var2.addAll(var5);
            }
            LOGGER.debug("Found all crystals, respawning dragon.");
            this.respawnDragon(var2);
        }
    }