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Fix loud white nosie after mouse steering #5812

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merged 2 commits into from
Apr 27, 2024
Merged

Fix loud white nosie after mouse steering #5812

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d66d201
Prevent NaN poisoning in right-mouse rotation (fixes loud thruster so…
neumond Apr 3, 2024
26e2898
Document savebump changes
Web-eWorks Apr 27, 2024
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5 changes: 5 additions & 0 deletions src/DynamicBody.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -67,6 +67,11 @@ DynamicBody::DynamicBody(const Json &jsonObj, Space *space) :
throw SavedGameCorruptException();
}

// fix saves with nans
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I'd recommend this comment be annotated with the current savefile version (see Game.cpp) so that the workaround can be removed when the next savebump occurs.

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I think we used to add "todo" notes to SAVEBUMP.txt as well, things to fix for next release, so that might be a good idea.
I should add "checking SAVEBUMP.txt" to the release guide, if we think this is a good strategy?

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That would be a good idea on both counts; this definitely deserves to be in the SAVEBUMP.txt file as well.

if (std::isnan(m_angVel.x) || std::isnan(m_angVel.y) || std::isnan(m_angVel.z)) {
m_angVel = vector3d(0.0);
}

m_aiMessage = AIError::AIERROR_NONE;
m_decelerating = false;
}
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4 changes: 3 additions & 1 deletion src/ship/PlayerShipController.cpp
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Expand Up @@ -106,7 +106,9 @@ struct PlayerShipController::Util {
auto good_speed = sqrt(2 * max_accel * want_rot) * 0.95;
auto frame_speed = want_rot / timeStep;
auto tot_speed = std::min(good_speed, frame_speed / 2);
rot_vel = (ship_dir.Cross(dir) * c.m_ship->GetOrient()).Normalized() * tot_speed;
// this cross product often becomes all-zeros (ship_dir coincides with requested dir)
// NormalizedSafe is crucial there to avoid NaN poisoning
rot_vel = (ship_dir.Cross(dir) * c.m_ship->GetOrient()).NormalizedSafe() * tot_speed;
}
return rot_vel;
};
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