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Avoid flicker when a kart with backpedal animation is stopping and

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left/right is pressed (see #2939).
This commit is contained in:
hiker 2017-10-21 00:58:25 +11:00
parent c8d13d7360
commit d7f5fb9e69
1 changed files with 5 additions and 1 deletions
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6
src/karts/kart.cpp
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@ -1616,7 +1616,11 @@ void Kart::updateSpeed()
chassisTrans.getBasis()[1][2],
chassisTrans.getBasis()[2][2]);
if (forwardW.dot(getVehicle()->getRigidBody()->getLinearVelocity()) < btScalar(0.))
// In theory <0 should be sufficient, but floating point errors can cause
// flipping from +eps to -eps and back, resulting in animation flickering
// if the kart has backpedal animations.
if (forwardW.dot(getVehicle()->getRigidBody()->getLinearVelocity())
< btScalar(-0.01f))
{
m_speed = -m_speed;
}