Re: DT in BGT
Yeah, that's what I thought days ago, actually. So I made a function that looks like this:
vector UpdateVel()
{
vel.x = (acc.x/M2)*cosine(theta);
vel.y = (acc.y/M2)*sine(theta);
vel.z = -9.81;
return vel;
}
Then, apparently I forgot to place it in the check function, like a damn idiot. No wonder it never worked. So I just placed it in the check function before moving the ball, and now it works correctly:
In move function. Number of degrees is 253, theta is 4.41568300754565, cosine of theta is -0.292371704722741, sine of theta is -0.956304755963034, accelleration x is 100, accelleration y is 100, mass is 0.057000000029802. Velocity x is -512.932800292969, velocity y is -1677.72766113281, and velocity z is -9.8100004196167.
Ball is now at -10.2586555480957, -33.5545539855957, 499.803802490234.
It appears to be seeing it correctly, but to be thorough, as a further test, I changed degrees to 45, which should be a 1:1 ratio on x and y. And that appears to work as well:
In move function. Number of degrees is 45, theta is 0.785398163397448, cosine of theta is 0.707106781186548, sine of theta is 0.707106781186547, accelleration x is 100, accelleration y is 100, mass is 0.057000000029802. Velocity x is 1240.53820800781, velocity y is 1240.53820800781, and velocity z is -9.8100004196167.
Ball is now at 24.8107643127441, 24.8107643127441, 499.803802490234.
Finally! For the record, I feel like a total fucking idiot, because I suspected that this was the issue, then wrote the function above, only to forget to add it to the check function. And when it didn't work, I assumed my first suspicion was wrong, when it actually wasn't. I really feel like a damn moron. Here's the question, though. I really, really would prefer not to write functions to update each vector like that. Is there a way to write a generic function that will update any vector I choose? That way I don't need to write one for velocity, one for drag, one for acceleration, etc. Again, I cannot believe how stupid I feel at the moment. Wow. Just...wow.
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