//-----------------------------------------------------------------------------
// Purpose:
// GetLocalTime() is the objects local current time
// Input : destTime - new time that is being moved to
// moveTime - amount of time to be advanced this frame
// Output : float - the actual amount of time to move (usually moveTime)
//-----------------------------------------------------------------------------
float CBaseMoveBehavior::SetObjectPhysicsVelocity( float moveTime )
{
// make sure we have a valid set up
if ( !m_pCurrentKeyFrame || !m_pTargetKeyFrame )
return moveTime;
// if we're not moving, we're not moving
if ( !IsMoving() )
return moveTime;
float destTime = moveTime + GetLocalTime();
// work out where we want to be, using destTime
m_flTimeIntoFrame = destTime - m_flAnimStartTime;
float newTime = (destTime - m_flAnimStartTime) / (m_flAnimEndTime - m_flAnimStartTime);
Vector newPos;
QAngle newAngles;
IPositionInterpolator *pInterp = GetPositionInterpolator( m_iPositionInterpolator );
if( pInterp )
{
// setup key frames
pInterp->SetKeyPosition( -1, m_pPreKeyFrame->m_Origin );
Motion_SetKeyAngles( -1, m_pPreKeyFrame->m_qAngle );
pInterp->SetKeyPosition( 0, m_pCurrentKeyFrame->m_Origin );
Motion_SetKeyAngles( 0, m_pCurrentKeyFrame->m_qAngle );
pInterp->SetKeyPosition( 1, m_pTargetKeyFrame->m_Origin );
Motion_SetKeyAngles( 1, m_pTargetKeyFrame->m_qAngle );
pInterp->SetKeyPosition( 2, m_pPostKeyFrame->m_Origin );
Motion_SetKeyAngles( 2, m_pPostKeyFrame->m_qAngle );
// find new interpolated position & rotation
pInterp->InterpolatePosition( newTime, newPos );
}
else
{
newPos.Init();
}
Quaternion qRot;
Motion_InterpolateRotation( newTime, m_iRotationInterpolator, qRot );
QuaternionAngles( qRot, newAngles );
// find our velocity vector (newPos - currentPos) and scale velocity vector according to the movetime
float oneOnMoveTime = 1 / moveTime;
SetAbsVelocity( (newPos - GetLocalOrigin()) * oneOnMoveTime );
SetLocalAngularVelocity( (newAngles - GetLocalAngles()) * oneOnMoveTime );
return moveTime;
}
//-----------------------------------------------------------------------------
// Purpose: calculates the position of the animating object between two keyframes
// Input : currentKey -
// pPrevKey -
// partialTime -
// newOrigin -
// newAngles -
// posInterpolator -
// rotInterpolator -
//-----------------------------------------------------------------------------
void CMapAnimator::GetAnimationAtTime( CMapKeyFrame *currentKey, CMapKeyFrame *pPrevKey, float partialTime, Vector& newOrigin, Quaternion &newAngles, int posInterpolator, int rotInterpolator )
{
// calculate the proportion of time to be spent on this keyframe
float animTime;
if ( currentKey->MoveTime() < 0.01 )
{
animTime = 1.0f;
}
else
{
animTime = partialTime / currentKey->MoveTime();
}
ASSERT( animTime >= 0.0f && animTime <= 1.0f );
IPositionInterpolator *pInterp = currentKey->SetupPositionInterpolator( posInterpolator );
// setup interpolation keyframes
Vector keyOrigin;
Quaternion keyAngles;
pPrevKey->GetOrigin( keyOrigin );
pPrevKey->GetQuatAngles( keyAngles );
pInterp->SetKeyPosition( -1, keyOrigin );
Motion_SetKeyAngles ( -1, keyAngles );
currentKey->GetOrigin( keyOrigin );
currentKey->GetQuatAngles( keyAngles );
pInterp->SetKeyPosition( 0, keyOrigin );
Motion_SetKeyAngles ( 0, keyAngles );
currentKey->NextKeyFrame()->GetOrigin( keyOrigin );
currentKey->NextKeyFrame()->GetQuatAngles( keyAngles );
pInterp->SetKeyPosition( 1, keyOrigin );
Motion_SetKeyAngles ( 1, keyAngles );
currentKey->NextKeyFrame()->NextKeyFrame()->GetOrigin( keyOrigin );
currentKey->NextKeyFrame()->NextKeyFrame()->GetQuatAngles( keyAngles );
pInterp->SetKeyPosition( 2, keyOrigin );
Motion_SetKeyAngles ( 2, keyAngles );
// get our new interpolated position
// HACK HACK - Hey Brian, look here!!!!
Vector hackOrigin;
pInterp->InterpolatePosition( animTime, hackOrigin );
newOrigin[0] = hackOrigin[0];
newOrigin[1] = hackOrigin[1];
newOrigin[2] = hackOrigin[2];
Motion_InterpolateRotation( animTime, rotInterpolator, newAngles );
}