How does hit detection work in COD4?

[Vreki]

According to this chart below, a M14 with stopping power should be able to kill anything in two hits, juggernaut or not.

And yet in CQB I will at times make 3-4 hits on an opponent without killing him, so I was wondering if there are additional hitboxes for arms and legs with a lower modifier?

[AllFoamNoBeer]

I believe that arms and legs take the same damage modifier as the gut.

[The_Eliminator]

There are no hitboxes in CoD4 i didnt think, it is all Pixel Collision.

[Chris_Redfield]

The only way to accurately check the problem out, would be through extensive testing. I dont believe youre killing people in more than 2 shots at CQB, provided the shots actually hit. Go play around with the M14, record a demo, and evaluate later. I am not convince that theres a problem.

[b` m3ow]

There are no hitboxes in CoD4 i didnt think, it is all Pixel Collision.

What he said, its all about pixels.

[Vreki]

There are no hitboxes in CoD4 i didnt think, it is all Pixel Collision.

Pixel Collision? How does that work in a 3D environment?
Or is it automatically considered a hit if my "cross-hair-pixel" covers a "soldier-pixel" when I pull the trigger?

The only way to accurately check the problem out, would be through extensive testing. I dont believe youre killing people in more than 2 shots at CQB, provided the shots actually hit. Go play around with the M14, record a demo, and evaluate later. I am not convince that theres a problem.

Hmm, so far you seem to be correct, things do look different in slow motion.

[Sars99]

can someone explain to me the pixel collison as opposed to hitboxes?

[AllFoamNoBeer]

can someone explain to me the pixel collison as opposed to hitboxes?

I don't see how it will work in a game like this. Its usually done on 2D sprites and flash games stuff like that.

But COD4? No idea dude.

[TheDesert_Fox]

Pixel collision doesn't work in 3D does it? Unless it's like how Vreki suggested by being from your perspective with a crosshair pixel and what not...

[The_Eliminator]

Well from what i have been told many times, and i think the developers also said it too, this game does use pixel collision in the 3D environment.

Basically this game fires actual projectiles which travel at a certain speed, it then hits the pixel of another player and is registered as damage, this is why you have to ridiculously lead your targets in this game, even if they are only 5 feet away.

Pixel Collision imo is very poorly implemented in this game though.

[sturat]

I think there is a difference between arms/legs/torso because M40 with Stopping power is a one shot kill even for full health, but sometimes if I hit an arm, then it comes up with a hit indicator and doesnt kill the player.

[Vreki]

Well from what i have been told many times, and i think the developers also said it too, this game does use pixel collision in the 3D environment.

Basically this game fires actual projectiles which travel at a certain speed, it then hits the pixel of another player and is registered as damage, this is why you have to ridiculously lead your targets in this game, even if they are only 5 feet away.

Pixel Collision imo is very poorly implemented in this game though.

But but but.....
Pixels are 2D objects, you will have to add a 3D coordinate for that to work. And as far as I can see that would effectively cover the objects with millions of 1x1x1 hitboxes, which must be incredible costly to compute.

Then there is also is the factor that pixels are clientside, and vary depending on resolution and the detail level of objects.

[The_Eliminator]

Dont look at me im just the messenger

[jackal22]

if it was a 'cross-hair pixel over enemy pixel = hit' type thing then how comes some one has not enlarged their cross-hair to a big square which consumes the whole screen.

off topic, pollys are not like pixels right? they are more to do with models?

[Vreki]

if it was a 'cross-hair pixel over enemy pixel = hit' type thing then how comes some one has not enlarged their cross-hair to a big square which consumes the whole screen.

off topic, pollys are not like pixels right? they are more to do with models?

Polygons? No, that's the "wireframe" that makes up the 3D objects.
Like this:

if it was a 'cross-hair pixel over enemy pixel = hit' type thing then how comes some one has not enlarged their cross-hair to a big square which consumes the whole screen.

I suspect that only the centre pixel would be used for the calculation, regardless of the size of the cross-hair.