//-------------------------------------------------------------------------------
// @ Player::Update()
//-------------------------------------------------------------------------------
// Main update loop
//-------------------------------------------------------------------------------
void
Player::Update( float dt )
{
// get scale, rotate, translate for this frame
float s = 1.0f;
float r = 0.0f;
// set up scaling
if (IvGame::mGame->mEventHandler->IsKeyDown(';'))
{
s -= 0.25f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('p'))
{
s += 0.25f*dt;
}
mScale *= s;
// set up rotate
if (IvGame::mGame->mEventHandler->IsKeyDown('o'))
{
r -= kPI*0.25f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('u'))
{
r += kPI*0.25f*dt;
}
IvMatrix33 rotate;
rotate.RotationZ(r);
mRotate = rotate*mRotate;
// set up translation
IvVector3 xlate;
xlate.Zero();
if (IvGame::mGame->mEventHandler->IsKeyDown('k'))
{
xlate.x -= 3.0f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('i'))
{
xlate.x += 3.0f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('l'))
{
xlate.y -= 3.0f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('j'))
{
xlate.y += 3.0f*dt;
}
mTranslate += xlate;
// clear transform
if (IvGame::mGame->mEventHandler->IsKeyDown(' '))
{
mRotate.Identity();
mScale = 1.0f;
mTranslate.Zero();
}
} // End of Player::Update()
//-------------------------------------------------------------------------------
// @ IvQuat::IvQuat()
//-------------------------------------------------------------------------------
// Rotation matrix constructor
//-------------------------------------------------------------------------------
IvQuat::IvQuat( const IvMatrix33& rotation )
{
float trace = rotation.Trace();
if ( trace > 0.0f )
{
float s = ::IvSqrt( trace + 1.0f );
w = s*0.5f;
float recip = 0.5f/s;
x = (rotation(2,1) - rotation(1,2))*recip;
y = (rotation(0,2) - rotation(2,0))*recip;
z = (rotation(1,0) - rotation(0,1))*recip;
}
else
{
unsigned int i = 0;
if ( rotation(1,1) > rotation(0,0) )
i = 1;
if ( rotation(2,2) > rotation(i,i) )
i = 2;
unsigned int j = (i+1)%3;
unsigned int k = (j+1)%3;
float s = ::IvSqrt( rotation(i,i) - rotation(j,j) - rotation(k,k) + 1.0f );
(*this)[i] = 0.5f*s;
float recip = 0.5f/s;
w = (rotation(k,j) - rotation(j,k))*recip;
(*this)[j] = (rotation(j,i) + rotation(i,j))*recip;
(*this)[k] = (rotation(k,i) + rotation(i,k))*recip;
}
} // End of IvQuat::IvQuat()
//-------------------------------------------------------------------------------
// @ Player::Update()
//-------------------------------------------------------------------------------
// Main update loop
//-------------------------------------------------------------------------------
void
Player::Update( float dt )
{
// get scale, rotate, translate for this frame
float s = 1.0f;
float r = 0.0f;
// set up scaling
if (IvGame::mGame->mEventHandler->IsKeyDown(';'))
{
s -= 0.25f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('p'))
{
s += 0.25f*dt;
}
mScale *= s;
// set up rotate
if (IvGame::mGame->mEventHandler->IsKeyDown('o'))
{
r -= kPI*0.25f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('u'))
{
r += kPI*0.25f*dt;
}
IvMatrix33 rotate;
rotate.RotationZ(r);
mRotate = rotate*mRotate;
// set up translation
IvVector3 xlate;
xlate.Zero();
if (IvGame::mGame->mEventHandler->IsKeyDown('k'))
{
xlate.x -= 3.0f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('i'))
{
xlate.x += 3.0f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('l'))
{
xlate.y -= 3.0f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('j'))
{
xlate.y += 3.0f*dt;
}
mTranslate += xlate;
// clear transform
if (IvGame::mGame->mEventHandler->IsKeyPressed(' '))
{
mRotate.Identity();
mScale = 1.0f;
mTranslate.Zero();
}
// change texture
if (IvGame::mGame->mEventHandler->IsKeyPressed('t'))
{
mCurrentBlendTexIndex = (mCurrentBlendTexIndex + 1) % NUM_BLEND_TEX;
}
// change blending mode
if (IvGame::mGame->mEventHandler->IsKeyPressed('b'))
{
mBlendMode = (BlendMode)((mBlendMode + 1) % kBlendModeCount);
}
} // End of Player::Update()
//-------------------------------------------------------------------------------
// @ Player::Update()
//-------------------------------------------------------------------------------
// Main update loop
//-------------------------------------------------------------------------------
void
Player::Update( float dt )
{
// update based on input
if (IvGame::mGame->mEventHandler->IsKeyPressed(' '))
{
if (mRun)
{
mTime = 0.0f;
mRun = false;
}
else
{
mRun = true;
}
}
if (IvGame::mGame->mEventHandler->IsKeyPressed('m'))
{
mMode = (mMode + 1)%4;
}
if (mRun)
{
mTime += dt;
// stop just before end so we don't end up with zero vector
// when we look ahead
if ( mTime > 11.5f )
mTime = 11.5f;
}
// now we set up the camera
// get eye position
IvVector3 eye = mCurve.Evaluate( mTime );
IvVector3 viewDir;
IvVector3 viewSide;
IvVector3 viewUp;
// set parameters depending on what mode we're in
// Frenet frame
if ( mMode == 3 )
{
IvVector3 T = mCurve.Velocity( mTime );
IvVector3 a = mCurve.Acceleration( mTime );
IvVector3 B = T.Cross( a );
B.Normalize();
T.Normalize();
IvVector3 N = B.Cross( T );
viewDir = T;
viewSide = -N; // have to negate to get from RH frame to LH frame
viewUp = B;
}
else
{
IvVector3 lookAt;
// look same direction all the time
if ( mMode == 2 )
{
viewDir = IvVector3::xAxis;
}
// look along tangent
else if ( mMode == 1 )
{
viewDir = mCurve.Velocity( mTime );
}
// look ahead .5 in parameter
else if ( mMode == 0 )
{
viewDir = mCurve.Evaluate( mTime+0.5f ) - eye;
}
// compute view vectors
viewDir.Normalize();
viewUp = IvVector3::zAxis - IvVector3::zAxis.Dot(viewDir)*viewDir;
viewUp.Normalize();
viewSide = viewDir.Cross(viewUp);
}
// now set up matrices
// build transposed rotation matrix
IvMatrix33 rotate;
if ( IvRenderer::mRenderer->GetAPI() == kOpenGL )
{
rotate.SetRows( viewSide, viewUp, -viewDir );
}
else
{
rotate.SetRows( viewSide, viewUp, viewDir );
}
// transform translation
IvVector3 eyeInv = -(rotate*eye);
// build 4x4 matrix
IvMatrix44 matrix(rotate);
matrix(0,3) = eyeInv.x;
matrix(1,3) = eyeInv.y;
matrix(2,3) = eyeInv.z;
::IvSetViewMatrix( matrix );
} // End of Player::Update()
//-------------------------------------------------------------------------------
// @ Player::Update()
//-------------------------------------------------------------------------------
// Main update loop
//-------------------------------------------------------------------------------
void
Player::Update( float dt )
{
float s = 1.0f;
float r = 0.0f;
float x = 0.0f, y = 0.0f, z = 0.0f;
IvMatrix33 rotate;
IvVector3 xlate;
IvMatrix44 transform;
mTurret->Update( dt );
// set up scaling
if (IvGame::mGame->mEventHandler->IsKeyDown(';'))
{
s -= 0.25f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('p'))
{
s += 0.25f*dt;
}
mScale *= s;
// set up rotate
if (IvGame::mGame->mEventHandler->IsKeyDown('o'))
{
r -= kPI*0.25f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('u'))
{
r += kPI*0.25f*dt;
}
rotate.RotationZ(r);
mRotate = rotate*mRotate;
// set up translation
if (IvGame::mGame->mEventHandler->IsKeyDown('k'))
{
x -= 3.0f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('i'))
{
x += 3.0f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('l'))
{
y -= 3.0f*dt;
}
if (IvGame::mGame->mEventHandler->IsKeyDown('j'))
{
y += 3.0f*dt;
}
xlate.Set( x, y, z );
mTranslate += xlate;
// clear transform
if (IvGame::mGame->mEventHandler->IsKeyDown(' '))
{
mRotate.Identity();
mScale = 0.25f;
mTranslate.Zero();
}
} // End of Player::Update()
