yet another odd little game

[jwgh]

http://homokaasu.org/gasgames/game.gas?21

Orbits seem to be the way to go on the early levels. Then again, it's not like I'm anywhere close to the high scores.

Comments

[schwa242.livejournal.com]

This is much more fun

Are there

[vardissakheli.livejournal.com]

stairs (http://homokaasu.org/gasgames/game.gas?5) in your house?

[mmcirvin.livejournal.com]

The first rule of games: There's always someone who has far, far, more time to spend on this than you.

Is it computing orbits correctly?

[vardissakheli.livejournal.com]

Even in just two dimensions, it seems like it should be MUCH harder to crash into a harmonic attractor.

Re: Is it computing orbits correctly?

[mmcirvin.livejournal.com]

It's not a harmonic attractor (which would be Hooke's law, force increasing linearly with distance); looks more like a simple attempt to do inverse-square gravity with Euler integration. It has typical step-size problems at short distances.

oops

[vardissakheli.livejournal.com]

Been way too long for me to remember the correct names for physics concepts! I probably couldn't distinguish between Bremsstrahlung and Chrerenkov radation anymore either :-(

Re: oops

[mmcirvin.livejournal.com]

Actually, the orbits precess so much that I suspect it might be inverse-linear gravity. (People trying to get inverse-square gravity right often do this by accident, because they forget or don't know that the unit vector in the direction of r, divided by r², is the same as the vector r divided by r³.)

Ohhhhhhh!

[vardissakheli.livejournal.com]

I didn't notice for quite a while that you didn't have to start at rest! (Click and pull, and the atom springs away from the pointer.)

Man, talk about precession

[vardissakheli.livejournal.com]

Now that I can see something more than a straight line at level 1, I see those orbits aren't even vaguely elliptical. We are looking at very strange gravity indeed.

Re: Man, talk about precession

[mmcirvin.livejournal.com]

The precession does make the game harder.