Since I feel like I'm always asking this board for help with things I'd like to post something people might find useful.
This (minimally tested) function rotates a player by whatever angle, relative to where they're currently looking.
function axisToEuler(%axis)
{
%angleOver2 = getWord(%axis,3) * 0.5;
%angleOver2 = -%angleOver2;
%sinThetaOver2 = mSin(%angleOver2);
%cosThetaOver2 = mCos(%angleOver2);
%q0 = %cosThetaOver2;
%q1 = getWord(%axis,0) * %sinThetaOver2;
%q2 = getWord(%axis,1) * %sinThetaOver2;
%q3 = getWord(%axis,2) * %sinThetaOver2;
%q0q0 = %q0 * %q0;
%q1q2 = %q1 * %q2;
%q0q3 = %q0 * %q3;
%q1q3 = %q1 * %q3;
%q0q2 = %q0 * %q2;
%q2q2 = %q2 * %q2;
%q2q3 = %q2 * %q3;
%q0q1 = %q0 * %q1;
%q3q3 = %q3 * %q3;
%m13 = 2.0 * (%q1q3 - %q0q2);
%m21 = 2.0 * (%q1q2 - %q0q3);
%m22 = 2.0 * %q0q0 - 1.0 + 2.0 * %q2q2;
%m23 = 2.0 * (%q2q3 + %q0q1);
%m33 = 2.0 * %q0q0 - 1.0 + 2.0 * %q3q3;
return mRadToDeg(mAsin(%m23)) SPC mRadToDeg(mAtan(-%m13, %m33)) SPC mRadToDeg(mAtan(-%m21, %m22));
}
function eulerToAxis(%euler)
{
%euler = VectorScale(%euler,$pi / 180);
%matrix = MatrixCreateFromEuler(%euler);
return getWords(%matrix,3,6);
}
function rotatePlayerRelative(%player,%val)
{
if(-360 > %val > 360)
return;
if(%val > 179)
{
%val = %val / 2;
%count = 2;
}
else %count = 1;
for(%i=0; %i<%count; %i++)
{
%pos = getWords(%player.getTransform(),0,2);
%euler = axisToEuler(getWords(%player.getTransform(),3,6));
%rot = getWords(%euler,0,1);
%newAngleTwo = getWord(%euler,2) + %val;
if(%newAngle < 0)
%newAngleTwo = (%newAngle)-%val;
%newRot = %rot SPC %newAngleTwo;
%player.setTransform(%pos SPC eulerToAxis(%newRot));
}
}Hope it's helpful to someone. Apologies if it's useless.
