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500 lines
14 KiB
500 lines
14 KiB
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#include "stdafx.h"
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#include "GlobalFunctions.h"
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#include "fgdlib/HelperInfo.h"
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#include "MapAnimator.h"
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#include "MapDoc.h"
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#include "MapEntity.h"
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#include "MapWorld.h"
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#include "KeyFrame/KeyFrame.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include <tier0/memdbgon.h>
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IMPLEMENT_MAPCLASS( CMapAnimator );
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//-----------------------------------------------------------------------------
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// Purpose: Factory function. Used for creating a CMapKeyFrame from a set
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// of string parameters from the FGD file.
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// Input : *pInfo - Pointer to helper info class which gives us information
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// about how to create the class.
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// Output : Returns a pointer to the class, NULL if an error occurs.
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//-----------------------------------------------------------------------------
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CMapClass *CMapAnimator::CreateMapAnimator(CHelperInfo *pHelperInfo, CMapEntity *pParent)
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{
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return(new CMapAnimator);
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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CMapAnimator::CMapAnimator()
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{
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m_CoordFrame.Identity();
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m_bCurrentlyAnimating = false;
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m_pCurrentKeyFrame = this;
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m_iPositionInterpolator = m_iRotationInterpolator = m_iTimeModifier = 0;
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m_nKeysChanged = 0;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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CMapAnimator::~CMapAnimator()
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{
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Output : CMapClass *
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//-----------------------------------------------------------------------------
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CMapClass *CMapAnimator::Copy(bool bUpdateDependencies)
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{
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CMapAnimator *pNew = new CMapAnimator;
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pNew->CopyFrom(this, bUpdateDependencies);
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return pNew;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : *pObj -
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// Output : CMapClass
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//-----------------------------------------------------------------------------
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CMapClass *CMapAnimator::CopyFrom(CMapClass *pObj, bool bUpdateDependencies)
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{
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CMapKeyFrame::CopyFrom(pObj, bUpdateDependencies);
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CMapAnimator *pFrom = dynamic_cast<CMapAnimator*>( pObj );
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Assert( pFrom != NULL );
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memcpy( m_CoordFrame.Base(), pFrom->m_CoordFrame.Base(), sizeof(m_CoordFrame) );
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m_bCurrentlyAnimating = false;
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m_pCurrentKeyFrame = NULL; // keyframe it's currently at
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m_iTimeModifier = pFrom->m_iTimeModifier;
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m_iPositionInterpolator = pFrom->m_iPositionInterpolator;
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m_iRotationInterpolator = pFrom->m_iRotationInterpolator;
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return this;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Returns a coordinate frame to render in, if the entity is animating
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// Input : matrix -
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// Output : returns true if a new matrix is returned, false if it is invalid
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//-----------------------------------------------------------------------------
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bool CMapAnimator::GetTransformMatrix( VMatrix& matrix )
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{
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// are we currently animating?
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if ( m_bCurrentlyAnimating )
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{
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matrix = m_CoordFrame;
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return true;
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}
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return false;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Notifies that the entity this is attached to has had a key change
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// Input : key -
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// value -
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//-----------------------------------------------------------------------------
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void CMapAnimator::OnParentKeyChanged( const char* key, const char* value )
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{
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if ( !stricmp(key, "TimeModifier") )
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{
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m_iTimeModifier = atoi( value );
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}
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else if ( !stricmp(key, "PositionInterpolator") )
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{
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m_iPositionInterpolator = atoi( value );
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// HACK: Force everything in the path to update. Better to follow our path and update only it.
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UpdateAllDependencies(this);
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}
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else if ( !stricmp(key, "RotationInterpolator") )
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{
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m_iRotationInterpolator = atoi( value );
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}
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m_nKeysChanged++;
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CMapKeyFrame::OnParentKeyChanged( key, value );
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}
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//-----------------------------------------------------------------------------
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// Purpose: Gets the current and previous keyframes for a given time.
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// Input : time - time into sequence
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// pKeyFrame - receives current keyframe pointer
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// pPrevKeyFrame - receives previous keyframe pointer
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// Output : time remaining after the thing has reached this key
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//-----------------------------------------------------------------------------
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float CMapAnimator::GetKeyFramesAtTime( float time, CMapKeyFrame *&pKeyFrame, CMapKeyFrame *&pPrevKeyFrame )
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{
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pKeyFrame = this;
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pPrevKeyFrame = this;
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float outTime = time;
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while ( pKeyFrame )
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{
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if ( pKeyFrame->MoveTime() > outTime )
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{
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break;
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}
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// make sure this anim has enough time
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if ( pKeyFrame->MoveTime() < 0.01f )
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{
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outTime = 0.0f;
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break;
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}
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outTime -= pKeyFrame->MoveTime();
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pPrevKeyFrame = pKeyFrame;
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pKeyFrame = pKeyFrame->NextKeyFrame();
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}
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return outTime;
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}
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//-----------------------------------------------------------------------------
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// Purpose: creates a new keyframe at the specified time
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// Input : time -
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// Output : Returns true on success, false on failure.
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//-----------------------------------------------------------------------------
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CMapEntity *CMapAnimator::CreateNewKeyFrame( float time )
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{
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// work out where we are in the animation
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CMapKeyFrame *key;
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CMapKeyFrame *pPrevKey;
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float partialTime = GetKeyFramesAtTime( time, key, pPrevKey );
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CMapEntity *pCurrentEnt = dynamic_cast<CMapEntity*>( key->m_pParent );
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// check to see if we're direction on a key frame
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Vector posOffset( 0, 0, 0 );
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if ( partialTime == 0 )
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{
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// create this new key frame slightly after the current one, and offset
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posOffset[0] = 64;
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}
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// get our orientation and position at this time
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Vector vOrigin;
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QAngle angles;
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Quaternion qAngles;
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GetAnimationAtTime( key, pPrevKey, partialTime, vOrigin, qAngles, m_iPositionInterpolator, m_iRotationInterpolator );
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QuaternionAngles( qAngles, angles );
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// create the new map entity
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CMapEntity *pNewEntity = new CMapEntity;
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Vector newPos;
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VectorAdd( vOrigin, posOffset, newPos );
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pNewEntity->SetPlaceholder( TRUE );
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pNewEntity->SetOrigin( newPos );
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pNewEntity->SetClass( "keyframe_track" );
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char buf[128];
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sprintf( buf, "%f %f %f", angles[0], angles[1], angles[2] );
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pNewEntity->SetKeyValue( "angles", buf );
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// link it into the keyframe list
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// take over this existing next keyframe pointer
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const char *nextKeyName = pCurrentEnt->GetKeyValue( "NextKey" );
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if ( nextKeyName )
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{
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pNewEntity->SetKeyValue( "NextKey", nextKeyName );
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}
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// create a new unique name for this ent
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char newName[128];
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const char *oldName = pCurrentEnt->GetKeyValue( "targetname" );
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if ( !oldName || oldName[0] == 0 )
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oldName = "keyframe";
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CMapWorld *pWorld = GetWorldObject( this );
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if ( pWorld )
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{
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pWorld->GenerateNewTargetname( oldName, newName, sizeof( newName ), true, NULL );
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pNewEntity->SetKeyValue( "targetname", newName );
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// point the current entity at the newly created one
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pCurrentEnt->SetKeyValue( "NextKey", newName );
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// copy any relevant values
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const char *keyValue = pCurrentEnt->GetKeyValue( "parentname" );
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if ( keyValue )
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pNewEntity->SetKeyValue( "parentname", keyValue );
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keyValue = pCurrentEnt->GetKeyValue( "MoveSpeed" );
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if ( keyValue )
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pNewEntity->SetKeyValue( "MoveSpeed", keyValue );
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}
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return(pNewEntity);
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}
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//-----------------------------------------------------------------------------
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// Purpose: stops CMapKeyframe from doing it's auto-connect behavior when cloning
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// Input : pClone -
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//-----------------------------------------------------------------------------
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void CMapAnimator::OnClone( CMapClass *pClone, CMapWorld *pWorld, const CMapObjectList &OriginalList, CMapObjectList &NewList )
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{
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CMapClass::OnClone( pClone, pWorld, OriginalList, NewList );
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}
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//-----------------------------------------------------------------------------
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// Purpose: calculates the position of an animating object at a given time in
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// it's animation sequence
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// Input : animTime -
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// *newOrigin -
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// *newAngles -
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//-----------------------------------------------------------------------------
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void CMapAnimator::GetAnimationAtTime( float animTime, Vector& newOrigin, Quaternion &newAngles )
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{
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// setup the animation, given the time
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// get our new position & orientation
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float newTime, totalAnimTime = GetRemainingTime();
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animTime /= totalAnimTime;
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// don't use time modifier until we work out what we're going to do with it
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//Motion_CalculateModifiedTime( animTime, m_iTimeModifier, &newTime );
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newTime = animTime;
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// find out where we are in the keyframe sequence based on the time
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CMapKeyFrame *pPrevKeyFrame;
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float posTime = GetKeyFramesAtTime( newTime * totalAnimTime, m_pCurrentKeyFrame, pPrevKeyFrame );
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// find the position from that keyframe
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GetAnimationAtTime( m_pCurrentKeyFrame, pPrevKeyFrame, posTime, newOrigin, newAngles, m_iPositionInterpolator, m_iRotationInterpolator );
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}
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//-----------------------------------------------------------------------------
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// Purpose: calculates the position of the animating object between two keyframes
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// Input : currentKey -
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// pPrevKey -
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// partialTime -
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// newOrigin -
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// newAngles -
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// posInterpolator -
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// rotInterpolator -
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//-----------------------------------------------------------------------------
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void CMapAnimator::GetAnimationAtTime( CMapKeyFrame *currentKey, CMapKeyFrame *pPrevKey, float partialTime, Vector& newOrigin, Quaternion &newAngles, int posInterpolator, int rotInterpolator )
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{
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// calculate the proportion of time to be spent on this keyframe
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float animTime;
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if ( currentKey->MoveTime() < 0.01 )
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{
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animTime = 1.0f;
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}
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else
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{
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animTime = partialTime / currentKey->MoveTime();
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}
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Assert( animTime >= 0.0f && animTime <= 1.0f );
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IPositionInterpolator *pInterp = currentKey->SetupPositionInterpolator( posInterpolator );
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// setup interpolation keyframes
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Vector keyOrigin;
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Quaternion keyAngles;
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pPrevKey->GetOrigin( keyOrigin );
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pPrevKey->GetQuatAngles( keyAngles );
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pInterp->SetKeyPosition( -1, keyOrigin );
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Motion_SetKeyAngles ( -1, keyAngles );
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currentKey->GetOrigin( keyOrigin );
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currentKey->GetQuatAngles( keyAngles );
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pInterp->SetKeyPosition( 0, keyOrigin );
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Motion_SetKeyAngles ( 0, keyAngles );
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currentKey->NextKeyFrame()->GetOrigin( keyOrigin );
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currentKey->NextKeyFrame()->GetQuatAngles( keyAngles );
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pInterp->SetKeyPosition( 1, keyOrigin );
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Motion_SetKeyAngles ( 1, keyAngles );
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currentKey->NextKeyFrame()->NextKeyFrame()->GetOrigin( keyOrigin );
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currentKey->NextKeyFrame()->NextKeyFrame()->GetQuatAngles( keyAngles );
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pInterp->SetKeyPosition( 2, keyOrigin );
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Motion_SetKeyAngles ( 2, keyAngles );
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// get our new interpolated position
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// HACK HACK - Hey Brian, look here!!!!
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Vector hackOrigin;
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pInterp->InterpolatePosition( animTime, hackOrigin );
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newOrigin[0] = hackOrigin[0];
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newOrigin[1] = hackOrigin[1];
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newOrigin[2] = hackOrigin[2];
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Motion_InterpolateRotation( animTime, rotInterpolator, newAngles );
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}
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//-----------------------------------------------------------------------------
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// Purpose: Builds the animation transformation matrix for the entity if it's animating
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//-----------------------------------------------------------------------------
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void CMapAnimator::UpdateAnimation( float animTime )
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{
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// only animate if the doc is animating and we're selected
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if ( !CMapDoc::GetActiveMapDoc()->IsAnimating() || !m_pParent->IsSelected() )
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{
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// we're not animating
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m_bCurrentlyAnimating = false;
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return;
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}
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m_bCurrentlyAnimating = true;
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Vector newOrigin;
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Quaternion newAngles;
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GetAnimationAtTime( animTime, newOrigin, newAngles );
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VMatrix mat, tmpMat;
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Vector ourOrigin;
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GetOrigin( ourOrigin );
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mat.Identity();
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// build us a matrix
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// T(newOrigin)R(angle)T(-ourOrigin)
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m_CoordFrame.Identity() ;
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// transform back to the origin
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for ( int i = 0; i < 3; i++ )
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{
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m_CoordFrame[i][3] = -ourOrigin[i];
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}
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// Apply interpolated Rotation
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QuaternionMatrix( newAngles, mat.As3x4() );
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m_CoordFrame = m_CoordFrame * mat;
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// transform back to our new position
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mat.Identity();
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for ( int i = 0; i < 3; i++ )
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{
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mat[i][3] = newOrigin[i];
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}
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m_CoordFrame = m_CoordFrame * mat;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Rebuilds the line path between keyframe entities
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// samples the interpolator function to get an approximation of the curve
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//-----------------------------------------------------------------------------
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void CMapAnimator::RebuildPath( void )
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{
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CMapWorld *pWorld = GetWorldObject( this );
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if ( !pWorld )
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{
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// Sometimes the object isn't linked back into the world yet when RebuildPath()
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// is called... we will be get called again when needed, but may cause an incorrect
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// (linear-only) path to get drawn temporarily.
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return;
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}
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//
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// Build the path forward from the head. Keep a list of nodes we've visited to
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// use in detecting circularities.
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//
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CMapObjectList VisitedList;
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CMapKeyFrame *pCurKey = this;
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while ( pCurKey != NULL )
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{
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VisitedList.AddToTail( pCurKey );
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//
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// Attach ourselves as this keyframe's animator.
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//
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pCurKey->SetAnimator( this );
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//
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// Get the entity parent of this keyframe so we can query keyvalues.
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//
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CMapEntity *pCurEnt = dynamic_cast<CMapEntity *>( pCurKey->GetParent() );
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if ( !pCurEnt )
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{
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return;
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}
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//
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// Find the next keyframe in the path.
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//
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CMapEntity *pNextEnt = pWorld->FindEntityByName( pCurEnt->GetKeyValue( "NextKey" ) );
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CMapKeyFrame *pNextKey = NULL;
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if ( pNextEnt )
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{
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pNextKey = pNextEnt->GetChildOfType( ( CMapKeyFrame * )NULL );
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pCurKey->SetNextKeyFrame(pNextKey);
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}
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else
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{
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pCurKey->SetNextKeyFrame( NULL );
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}
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pCurKey = pNextKey;
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//
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// If we detect a circularity, stop.
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//
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if ( VisitedList.Find( pCurKey ) != -1 )
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{
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break;
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}
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}
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//
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// Now traverse the path again building the spline points, once again checking
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// the visited list for circularities.
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//
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VisitedList.RemoveAll();
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pCurKey = this;
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CMapKeyFrame *pPrevKey = this;
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while ( pCurKey != NULL )
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{
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VisitedList.AddToTail( pCurKey );
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pCurKey->BuildPathSegment(pPrevKey);
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pPrevKey = pCurKey;
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pCurKey = pCurKey->m_pNextKeyFrame;
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//
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// If we detect a circularity, stop.
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//
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if ( VisitedList.Find( pCurKey ) != -1 )
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{
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break;
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}
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}
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}
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