Proof of bullet drop in the game

[Snigel]

Re: Proof of bullet drop in the game

I do believe in the gravity on bullets, bulletdrop, or whatever you want to call it, but it's interesting to see that nobody tries to aim at the same distance to the right or the left of a person, just above. IMO it could as well be bad aim as the right height above the head in the videos posted earlier.

I've read a statement I recall was from dice, saying that the sniper rifles are tuned for 200m distance, I went out tried some, but it seemed really wrong. Can somebody prove me wrong/right?

At a couple of the "proof" videos, the shooting are in upward or downward angle, I've experienced that the engine has a lot of strange phenomenons when using a sniper rifle in an angle, these gets worse as the angle gets steeper.

[SK]

Re: Proof of bullet drop in the game

You can hit when aiming to the left or right because of random deviation, but that depends on the gun and some other parameters (are you running, holding the gun still etc). The bullet (and the "possible impact" cone) always drop with distance though.

I don´t see any effects when firing at an angle that can´t be explained with a simple gravity modifier to the Z-axis of the projectile, like explained before in this thread.

[Robske007a]

Re: Proof of bullet drop in the game

They are simply applying laws of physics with an adjustment offset to gravity when performing cosines and sines laws.

So the lower your velocity the greater bullet drop is. With your velocity slow enough you can fire vertically and have it hit you.

Painfull, not realistic, LOL

[Tenshi]

Re: Proof of bullet drop in the game

I am physicist (PhD) and still I am not sure what sines and cosines laws you are talking about. The laws involved in these things are just the simple 2/3-D projectile motion equations which are exactly the same as the 1-D motions laws. very simple sit of equations.

It is actually the more time you fly the more drop you will have. by lowering the velocity you are just increasing the time of flight. make the speed 1m/s and try to shoot a bot 5 meters away! it will take 5 damn seconds to hit him (if you ever hit him!)

Sorry for the headache! I just cannot stay quite when you guys talk about physics!

Those equations are simple, definately, but they are computationally expensive. its not as simple as adding two variables together. They involve cosines and powers and stuff...slow as hell to compute.

[Tenshi]

Re: Proof of bullet drop in the game

Fair enough



Yes, it is irrelevant. The positioning of what amounts to the wings in the code (not the model) and the position of the engines dictates how it will behave when flying.

Lol, what?? So i could take a fridge-freezer and make it fly just by calling it an aeroplane??

A plane has to be shaped like a plane (or something that flies) to fly.

You could shape a bullet in such a way as to eliminate bullet drop...somehow.

[IVfluids]

Re: Proof of bullet drop in the game

Lol, what?? So i could take a fridge-freezer and make it fly just by calling it an aeroplane??

A plane has to be shaped like a plane (or something that flies) to fly.

You could shape a bullet in such a way as to eliminate bullet drop...somehow.

Dood, have you ever done anything with the BF engine? In BF42 you could ssm engines onto a tank and make it fly just as fast and as maneuverable as a jet in DC, I've done it. I'm the one who modded the sh*t out of the maps on the GSN server.

This is not real life, it does not have to be shaped like jet, it could be shaped like a d*ldo and still fly. Quit trying to rationalize **** in this game with real life, it isn't, what part of that don't you people understand?

You are not going to shape a bullet in this game and have it eliminate bullet drop. Now, you could add some ****in wing code and make it eliminate it, but you are not going to put visible wings on the bullet to make and all of a sudden it creates lift. It won't fly no matter how many wings you put on it unless you have wing code attached or get very f*ckin creative with multiple engine placement.

You will not make a fridge/freezer fly just because it is in the child folder for vehicles/air and call it a plane. It will fly if you attach some f*ckin wing code to it and it will look a fridge without wings that is flying. Any of this making sense yet?

Here, you want to see how to make a vehicle fly, this is from a BF42 mod, but the basic gist of it is still the same:

http://ryanveltidi.com/ssm/modules.php?name=Forums&file=viewtopic&t=592&start=0&postdays=0&postorder=asc&highlight=&sid=4b0885d9700aca4381b08b037d3eea04

If you actually want to argue about anything in this game and have some knowledge about it, you could probably start at their site: www.serversidemodding.com

And do some reading here: http://mdt.planetbattlefield.gamespy.com/about.shtm

Alot of that **** is for BF42 and BFV, but there are not any sites with as much detailed information about the BF (refractor) engine as those sites, and alot (95%) of that same stuff in there has relevance to BF2.

[SK]

Re: Proof of bullet drop in the game

Those equations are simple, definately, but they are computationally expensive. its not as simple as adding two variables together. They involve cosines and powers and stuff...slow as hell to compute.

Actually the computational cost of a simple bullet drop calculation is pretty small, compared to all the other stuff going on at the same time. You got hundreds of vector operations more for rendering a crane in BF2 for example.
You don´t even need any cosine, the "worst" operation is a multiplication. Could look something like this (simplified and certainly not performance optimized :p ):

for (all bullets in the air)
{
time=currentBullet.getFlightTime();
newBulletPosition=currentBullet.getInitialDirectio nVector()*time;
newBulletPosition.setZCoord(newBulletPosition.getZ Coord() - 5*time*time); //0.5*10*time^2
currentBullet.setPosition(newBulletPosition);
}

With this you have moved every bullet around and let it fall a bit. Now what will get expensive is looking for collisions on the way, but that´s another story

[TC-clan-TC-boss]

Re: Proof of bullet drop in the game

Thats why I always get killed with an Sniper-to-Sniper figth =P thx m8
Hope I survive longer now...

[(BG)Patton]

Re: Proof of bullet drop in the game

dont you ever see the machinegun tracer bullets drop when a teammate shoots at the us island on wake and you are a sniper? it is really amazing

[Nanten]

Re: Proof of bullet drop in the game

i think this is pretty goofy to argue over this, every freaking sniper that really knows how to snipe, can tell you there is a bullet drop.

[squizz]

Re: Proof of bullet drop in the game

hey I remember this thread from back in the day.

[IVfluids]

Re: Proof of bullet drop in the game

oh gawd, whore resurrected this pos thread lol

[Hurricane.CAD]

Re: Proof of bullet drop in the game

Clear! Alright, you're good to go!

[imported_Sacramento]

Re: Proof of bullet drop in the game

Dont you just love it when people dig for threads in the grave? :|:

[RocketChild]

Re: Proof of bullet drop in the game

Wow, there is a blast from the past.