Thanks for pointing that out. The reason I used the old syntax was partly because I was learning with an old tutorial I found on the web (https://sites.google.com/a/ruby4kids.com/gosu/home). I will change it to the current syntax.

Regarding the cannon blast frequency, because it is controlled by the code logic which specifies that cannon can only be re-launched either when it is outside the screen or when it is neutralised after hitting the enemy tank or a brick. Thus, it cannot fire multiple shots to be too powerful. In this case, the short distance attack is more advantageous.

I hope you have enjoyed playing the game :)).

I have had a discord account for a while. Now it is a good time to be more active!

I have always remembered how I enjoyed playing Battle City when I was a child. Gosu has now made it possible for me to build a similar game. This is the first game I've ever built and has taken much longer than I expected. At present, Battle City I contains one level. Hopefully, in the future, I will be able to develop several levels with interesting map design, perhaps through collaborative efforts? Comments and feedbacks are most welcome.

Here is the github link:
https://github.com/kcsheng/battle_city_I

[https://github.com/kcsheng/battle_city_I/blob/master/media/screenshot.png]