private void UpdateBody( Real deltaTime )
{
// we will calculate this
goalDirection = Vector3.Zero;
if ( keyDirection != Vector3.Zero && baseAnimID != AnimationID.Dance )
{
// calculate actually goal direction in world based on player's key directions
goalDirection += keyDirection.z * cameraNode.Orientation.ZAxis;
goalDirection += keyDirection.x * cameraNode.Orientation.XAxis;
goalDirection.y = 0;
goalDirection.Normalize();
Quaternion toGoal = bodyNode.Orientation.ZAxis.GetRotationTo( goalDirection );
// calculate how much the character has to turn to face goal direction
Real yawToGlobal = toGoal.Yaw;
// this is how much the character CAN turn this frame
Real yawAtSpeed = yawToGlobal / Utility.Abs( yawToGlobal ) * deltaTime * TurnSpeed;
// reduce "turnability" if we're in midair
if ( baseAnimID == AnimationID.JumpLoop )
yawAtSpeed *= 0.2;
// turn as much as we can, but not more than we need to
if ( yawToGlobal < 0 )
yawToGlobal = Utility.Min<Real>( yawToGlobal, yawAtSpeed );
else if ( yawToGlobal > 0 )
yawToGlobal = Utility.Max<Real>( 0, Utility.Min<Real>( yawToGlobal, yawAtSpeed ) );
bodyNode.Yaw( yawToGlobal );
// move in current body direction (not the goal direction)
bodyNode.Translate( new Vector3( 0, 0, deltaTime * RunSpeed * anims[ (int)baseAnimID ].Weight ), TransformSpace.Local );
}
if ( baseAnimID == AnimationID.JumpLoop )
{
// if we're jumping, add a vertical offset too, and apply gravity
bodyNode.Translate( new Vector3( 0, verticalVelocity * deltaTime, 0 ), TransformSpace.Local );
verticalVelocity -= Gravity * deltaTime;
Vector3 pos = bodyNode.Position;
if ( pos.y <= CharHeight )
{
// if we've hit the ground, change to landing state
pos.y = CharHeight;
bodyNode.Position = pos;
SetBaseAnimation( AnimationID.JumpEnd, true );
timer = 0;
}
}
}
