Building a Working Plane in Poly Bridge 2

Eventually, I will make a boat in this game. Somehow making a plane was easier.

[ReidCaptain]

Next up: making a boat. I need to think about that one for a while though. Anything else you want to see me make?

[Korvboll]

Engineer 1: So we need to make a bridge over this gap. Any ideas?

Engineer 2: Yeah so I was thinking we can use some hydraulic pistons to stretch some springs connected to some steel in a star shape pattern which will generate a lifting force for some reason lol so the cars can fly over.

Engineer 1: wtf?

[irchonite]

This is possibly my favorite polybridge video yet, I love watching the process of you turning something seemingly uncontrollable and bizarre into a relatively stable working mechanic

[paggnut]

It's a bird, it's a plane, it's s... yeah its a plane, kinda

[JamUsagi]

So here’s what I think is happening with the slow falling engine:

(This is entirely speculation, idk how Polybridge calculates physics but I am a game dev so take this as you will)

Collisions are extremely annoying to calculate accurately. Even the best physics engines will usually break when objects go so fast that they pass by each-other in a single frame and the collision doesn’t have time to happen. So to fix this, a lot of games (probably including Polybridge) have a maximum velocity for moving objects.

The glitch engine created here just so happens to spin so fast that parts of it hit the velocity cap.

When the engine falls, the downwards velocity from gravity can’t be properly applied to any parts of the engine that are already moving downwards, since it gets eaten by the velocity cap. This essentially means that gravity doesn’t exist for any parts of the engine which are moving downwards, lowering the overall effect of gravity on the engine.

(The engine still falls slowly because any parts that aren’t moving downwards still get the proper downwards velocity.)

[Cory_Springer]

Ha! I just beat poly bridge last week and I'm slowly working through the campaign of poly bridge 2. Meanwhile RC's over here making freaking gliders by exploiting gravity glitches.

Amazing stuff as usual, Captain!

[Unsi]

I love these gravity physics, they are great!

[TheLazyComet]

*bing bong* this is captain Captain speaking. Please fasten your seatbelts. our engines are rotating in the right direction so we are gonna take off now

[blake_]

My favorite quote: any dope can make a bridge, only an engineer can make a bridge that barely stands
Reid: you mean a plane?
Me: No a bridge
Reid: So, a plane.

[megasupersounds]

Woody: "That wasn`t flying !
That was... falling with style"

[T-minus-infinite]

I dont know if you as an engineer in real life would be incredible or horrifying. great video

[theorensummoner]

Title: Making a plane in poly bridge
Me: I'm sorry what?

[creeperech]

My guess as someone who's actually made games in the past as to how the slow falling glitch works is that the speed of an object is clamped to a certain velocity and that due to the rotation of the wheel the game has basicly run out of 'speed budget' for the object and simply cannot apply the remainder of the gravity to the object.

Tl;DR object ran out of speed budget, can't apply full gravity.

[JoshuaPullin]

Now that's falling with style... Just need a catapult to launch it back in to the sky :P

[palfly]

There's a bug that works great for this. you basically have steel beams outwards forming a ring (with the outer nodes as close as possible to each other), and then you connect as many nodes as possible with road.

[YMandarin]

stretching these strings this much just looks cursed

[iwilltrytotry]

i have no interest in this game or in physics, yet somehow i am hooked on these videos. truly genius level stuff!

[polarsbear]

My guess as to why this happens (as a game dev and glitch hunter) is that the game is trying to rotate the inertia along with the craft (you can see how it jitters along with the rotation, despite being symmetrical), and a lazy solution was implemented, that just discards part of the inertia of the object when it's rotated, instead of actually calculating how it would affect the object (probably for performance reasons, or maybe just the sanity of the devs). Well anyways that's my hypothesis, might be wrong, but eh.

[drewsify]

Playing the game exactly how it was intended

[Miki-se]

4:42 idk why, but it reamins me of something (erika starts playing louder and louder)