A little, but He promised to never do it again.
I take no pleasure in the deaths of possibly 100 to 200 million people at the Flood.
On the other hand, 2nd Kings 19:35. God ordered His angel to kill 185,000 soldiers.
In Egypt, God sent His angel to kill the first born children, not to mention, all those who may have been killed by the other plagues.
When the children of Israel went into the Promised Land, God ordered the complete killing of every single, solitary man, woman and child in the land.
Can God order the deaths of millions, like in the Flood? Yes He can. I may not understand exactly what he is doing, but I have faith in Him, that He has His reasons.
Yes, He promised never to destroy the world by a flood. Next time, He will destroy it by fire.