Thanks a lot for playing! I agree with your points. Right now, the horn basically shoots a big invisible cannonball (as it was a regular cannonball originally). I definitely want to make it so it just affects a certain radius, and apply a ripple effect or something. There is an almost invisible charge bar on the horn to indicate when you can toot, and there is a maximum power as well which is not indicated at all.
I'm definitely gonna keep working on it some more, thanks for your kind words.