Author Topic: Just sort of explaining PCJ bumps (Read 4933 times)

Flat Face · « **on:** November 02, 2008, 03:01:30 PM »

Hey, i thought i'd explain some of the basic PCJ bumps whilst its fresh in my mind.

this is mainly just getting to know the physics of the game.

ever wondered why some people seem to bump their front wheel and other bump the engine?

thats because the pcj col (col is the physical gta world, col is short for collision so the collision) is 13 sphere's, the bottom part (where you bump) is 4 big ones that just meet up, the front sphere is the front wheel, 2nd and 3rd are the engine and 4th is the rear wheel, people who bump off the front when are always leaning back when they bump so they don't bail(it changes your center of gravity back so the impact is taken off the player, imagine when your riding a pushbike in real life and you hit ramp, you lean back so your legs are what take the impact of the ramp), the people who bump the middle (engine) are usually leaning forward, leaning forward changes your center of gravity again but this time puts you past the shock of the bump and you end up leaning forward in mid air, the shock is sent through to the back half of the bike, the rear sphere (wheel) can be bump while leaning back or leaning back and pressing forward to hit a 2nd object for a double bump (you don't feel much shock from bumping this).

ok well thats about it i'll get a screen of what im talking about up.

Argy · « **Reply #1 on:** November 02, 2008, 05:03:34 PM »

dont get it very well , but its kinda explainÂ´ed in the pic lol

UtterGarbage · « **Reply #2 on:** November 02, 2008, 05:39:40 PM »

i get it. basically what he's saying is, if you lean foward smash your engine. If your radding hit them tires.

Flat Face · « **Reply #3 on:** November 02, 2008, 05:56:27 PM »

well if you've seen my other tut, the pull up late method is the front tire, the wheel to drop bump is the engine so

Torque · « **Reply #4 on:** November 02, 2008, 06:07:02 PM »

Can you send me that pcj txd

Jason · « **Reply #5 on:** November 02, 2008, 08:24:37 PM »

Hence the way we can grind aswell, the ridge where the spheres meet = where the bike can grind.

Flat Face · « **Reply #6 on:** November 02, 2008, 08:26:37 PM »

yeah but thats another explanation you can also grind the other 2 meeting spots though the rear is hella hard.

i tried making a col for a skateboard faggio s oyou could grind 50-50 and boardslides and such but you just stick :/

Jay · « **Reply #7 on:** November 02, 2008, 09:11:26 PM »

Cool explanation but why is it that when you do the bus bump at the VC airport for example you hage major spins?
What triger's this rotation?

Adonai · « **Reply #8 on:** November 02, 2008, 09:44:08 PM »

FF : cool, but I figured this out like two years ago

cola : maybe, because the col spheres are not located in one line, but a little curvy.

Flat Face · « **Reply #9 on:** November 03, 2008, 01:09:31 PM »

sort of, i think the bus has big spheres going in a line that it it up, you bump the sphere and spin off just like when you kick a ball it rotates but you hit the bus and you rotate.. you don't rotate if you hit dead on the center though, usually people slip. there are other things aswell but thats the main reason.

and yeah Adonai i figured this along with a bunch of different col things out AGES ago but never bothered doing something like this.

hakera · « **Reply #10 on:** November 04, 2008, 12:25:37 AM »

Good job man

Bixel · « **Reply #11 on:** November 04, 2008, 12:49:45 AM »

so u can bump where the spheres meet right?

Cdarmy · « **Reply #12 on:** November 04, 2008, 01:33:42 AM »

Fascinating!

Urban Legend · « **Reply #13 on:** November 04, 2008, 05:58:18 AM »

Yes, show us more.

Check out the grind from the back wheel also.

[attachment=10860:replay0208_1.rep]

Flat Face · « **Reply #14 on:** November 04, 2008, 05:12:52 PM »

Quote from: Urban Legend

Yes, show us more.

Check out the grind from the back wheel also.

[attachment=10860:replay0208_1.rep]

i 1st did a rear wheel grind in the old gtanny beta it was one of the things that made me look into the cols, that and flatbed bumps