コード例 #1
0
//-----------------------------------------------------------------------------
// 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;
}
コード例 #2
0
//-----------------------------------------------------------------------------
// 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 );
}