Upgrade the logic of towers and missiles

[m0rp30]

Maybe the logic of the towers is okay but I would add more reactivity to the missiles but I would also give it a random error for the contact point of the enemy in order to make the game more dynamic

[davcri]

I agree! I'm going to create a PR to have a more responsive turret fire mechanic.
For the second idea: I'm not quite sure about it. I prefer the gameplay to be predictable and "readable". I think that introducing a random error for the projectile collision can confuse the player.