It's all about how fat you are irl.

corner clipping is a really nice 'feature' of the q3 engine, and is one of the things missing from q4 that makes it feel clumsy and annoying.

basically the way it works is when you press jump you are put into a 'timer' of 250 ms. this timer was originally designed to disallow consecutive jumps, but it's not used for that purpose in q3. however the one thing that does happen during the timer period is that your velocity is not clipped by collisions.

normally when you crash into a wall, you are slid along the wall (preventing you from going through the wall), and your velocity is clipped (so it points along the wall rather than into it).

however when in a timer, you are slid along the wall, but your velocity is preserved. so if you can hit a wall, slide along it, and reach the end of the wall before the timer expires then you will continue to move past the wall/corner with your original velocity.

what this means is to perform a wall clip you have to jump, hit a wall, and fully slide past it within the space of 250 ms. which means you need to have enough speed along the direction of the wall in order to slide clear of it within the required time, and you need to jump just before you make contact with the wall, to maximise the available sliding time. so if you are going very fast you can make some really big clips. this also happens vertically (i.e. when jumping over horizontal obstacles), but there are not many occurances of suitable geometry where this can be done, so it's more rare.

that's it, dont think i missed anything out.

Nice explanation, thanks!

thanks for th info, i never knews what actually happend while clipping through corners

thanks for th info, i never knews what actually happend while clipping through corners

thx mate, explained nicely

Good explanation. Never really understood why it works, just that I can take very sharp corners and clip thru walls. :-)

So this applies to stairs as well? In CPM I often find myself hitting stairs not direct on and often kills my speed as I sink into the stairs (the necessary first step to doing a stair jump). If I was to hit a set of stairs at a funny angle and were to jump again before 250ms, I wouldn't sink in or kill my speed?

it applies to both vertical corners and horizontal corners (i.e. a step), or anything that you can crash into.

the cpm doublejump system changes a few things. for example in cpm you can jump again while in the jump timer, but the timer still exists because you can clip walls. also if you jump up to a ledge (or step) within a small time, cpm will step you up onto the step, which allows you to perform a second (double) jump off the step - this is the thing you are describing where you jump on stairs and dont seem to go anywhere - you are immediately being stepped onto the next step.

This is the answer I've been seeking!

To be fair, though, crouchsliding does balance out the lack of this feature quite a bit. Also, I can't imagine how this system would work as you typically crouchslide around a corner in Q4 anyways.

the scientific explanation prevails, lol. hail!

just l2clip

like the real pros

there's also ledgegrabbing

q4 felt crap without clipping, it was the first thing i noticed about the movement - it feels like your player models' shoulders are far too big.

l2crouchslide =]