Kaboodles wrote: I imagine bullet drop would be very difficult to simulate. The way the bullets-firing weapons work is that the gun basically checks to see if something's in front of it and does damage to it as needed while spawning the necessary effects. It doesn't actually fire a projectile like a rocket launcher would. Trying to have it create a very fast bullet projectile would cause problems in online games (a bullet would be created and destroyed on the server before the client ever found out it existed).
Using projectiles might work fine actually, Red Orchestra (also UE2.5) uses projectiles with very few problems (the occational dud round can happen online, but it is not a big problem for the game).
However, i belive that for the fast full-auto weapons, they did make a simple system to cut down on frame hits, basically, if the target is within a certain range, the weapon will use hitscan (at clouse range it doesen't matter much anyway), and if the target is further away it uses projectiles.
It might be worth looking into and testing, if projectiles can be used reliably it would certainly be the most realistic option.
magnus360 wrote: oh another thing I would point out that I didn't earlier is that as the bullet gets further down its arc it would do less damage
for example a M-16 would have velocity of about 3000ft per sec at 100 meters
but at 500 meters near the end of its arc the velocity is about 900ft per sec or less
and it also has a harder time staying straight in flight at that range
so not only would it do less damage possiably but it would be less likely to hit the target... (more went here, but there's no reason to quote the whole post)
What you're saying is absolutely correct, but i do fear that trying to impliment ballistics with such accuracy is not feasable, it would take quite a bit of code to calculate all of thease factors, and this would be happening every time someone shoots (for every individual round fired), so it would undoubtedly have a very profound effect on the game's performance.
I hope to see balistics like thease in games eventually, but i don't think the tech has quite caught up to the demand just yet 
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