Initial commit

Torque/SDK/engine/game/fx/cameraFXMgr.cc

@@ -0,0 +1,154 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#include "platform/platform.h"
+#include "game/fx/cameraFXMgr.h"
+
+#include "math/mRandom.h"
+#include "math/mMatrix.h"
+#include "dgl/dgl.h"
+
+// global cam fx
+CameraFXManager gCamFXMgr;
+
+
+//**************************************************************************
+// Camera effect
+//**************************************************************************
+CameraFX::CameraFX()
+{
+   mElapsedTime = 0.0;
+   mDuration = 1.0;
+}
+
+//--------------------------------------------------------------------------
+// Update
+//--------------------------------------------------------------------------
+void CameraFX::update( F32 dt )
+{
+   mElapsedTime += dt;
+}
+
+
+
+
+
+//**************************************************************************
+// Camera shake effect
+//**************************************************************************
+CameraShake::CameraShake()
+{
+   mFreq.zero();
+   mAmp.zero();
+   mStartAmp.zero();
+   mTimeOffset.zero();
+   mCamFXTrans.identity();
+   mFalloff = 10.0;
+}
+
+//--------------------------------------------------------------------------
+// Update
+//--------------------------------------------------------------------------
+void CameraShake::update( F32 dt )
+{
+   Parent::update( dt );
+
+   fadeAmplitude();
+
+   VectorF camOffset;
+   camOffset.x = mAmp.x * sin( M_2PI * (mTimeOffset.x + mElapsedTime) * mFreq.x );
+   camOffset.y = mAmp.y * sin( M_2PI * (mTimeOffset.y + mElapsedTime) * mFreq.y );
+   camOffset.z = mAmp.z * sin( M_2PI * (mTimeOffset.z + mElapsedTime) * mFreq.z );
+
+   VectorF rotAngles;
+   rotAngles.x = camOffset.x * 10.0 * M_PI/180.0;
+   rotAngles.y = camOffset.y * 10.0 * M_PI/180.0;
+   rotAngles.z = camOffset.z * 10.0 * M_PI/180.0;
+   MatrixF rotMatrix( EulerF( rotAngles.x, rotAngles.y, rotAngles.z ) );
+
+   mCamFXTrans = rotMatrix;
+   mCamFXTrans.setPosition( camOffset );
+}
+
+//--------------------------------------------------------------------------
+// Fade out the amplitude over time
+//--------------------------------------------------------------------------
+void CameraShake::fadeAmplitude()
+{
+   F32 percentDone = (mElapsedTime / mDuration);
+   if( percentDone > 1.0 ) percentDone = 1.0;
+
+   F32 time = 1 + percentDone * mFalloff;
+   time = 1 / (time * time);
+
+   mAmp = mStartAmp * time;
+}
+
+//--------------------------------------------------------------------------
+// Initialize
+//--------------------------------------------------------------------------
+void CameraShake::init()
+{
+   mTimeOffset.x = 0.0;
+   mTimeOffset.y = gRandGen.randF();
+   mTimeOffset.z = gRandGen.randF();
+}
+
+//**************************************************************************
+// CameraFXManager
+//**************************************************************************
+CameraFXManager::CameraFXManager()
+{
+   mCamFXTrans.identity();
+}
+
+//--------------------------------------------------------------------------
+// Destructor
+//--------------------------------------------------------------------------
+CameraFXManager::~CameraFXManager()
+{
+   clear();
+}
+
+//--------------------------------------------------------------------------
+// Add new effect to currently running list
+//--------------------------------------------------------------------------
+void CameraFXManager::addFX( CameraFX *newFX )
+{
+   mFXList.link( newFX );
+}
+
+//--------------------------------------------------------------------------
+// Clear all currently running camera effects
+//--------------------------------------------------------------------------
+void CameraFXManager::clear()
+{
+   mFXList.free();
+}
+
+//--------------------------------------------------------------------------
+// Update camera effects
+//--------------------------------------------------------------------------
+void CameraFXManager::update( F32 dt )
+{
+   CameraFXPtr *cur = NULL;
+   mCamFXTrans.identity();
+
+   for( cur = mFXList.next( cur ); cur; cur = mFXList.next( cur ) )
+   {
+      CameraFX * curFX = *cur;
+      curFX->update( dt );
+      MatrixF fxTrans = curFX->getTrans();
+
+      mCamFXTrans.mul( fxTrans );
+
+      if( curFX->isExpired() )
+      {
+         CameraFXPtr *prev = mFXList.prev( cur );
+         mFXList.free( cur );
+         cur = prev;
+      }
+   }
+}