public void UpdateMovement(GameTime GameTime)
{
switch (SatelliteSpecialAnimationState)
{
/* When the satellite is idle, it just rotates toward the target and have the
* natural behavior of flying, it must only be changed if the satellite engages
* n the SS, wich its behavior changes depending on the attack phase. */
case SatelliteSpecialAnimationState.Idle:
//Calculate oscilating movement
Center = mobile.Position + CurrentOffset;
oscilationCurrentAngle += oscilationAngleFactor * GameTime.ElapsedGameTime.TotalSeconds;
Vector2 currentOscilation = new Vector2(0, (float)(Math.Sin(oscilationCurrentAngle) * oscilationAmplitude));
//Repositioning
Flipbook.Position = mobile.Position + CurrentOffset + currentOscilation;
//Update Position Based on Motion
if (yMovementComponent.IsMoving)
{
yMovementComponent.RefreshCurrentPosition((float)GameTime.ElapsedGameTime.TotalSeconds);
CurrentOffset = new Vector2(0, yMovementComponent.CurrentPosition);
}
break;
/* When the attack starts, the satellite must load all variables that are going
* to be necessary on the movement. First all the phys related variable changes
* to make the satellite move above the target. */
case SatelliteSpecialAnimationState.Initializing1:
ySSAnimationMovement = new DefinedAcceleratedMovement();
xSSAnimationMovement = new DefinedAcceleratedMovement();
ySSAnimationMovement.Preset(Flipbook.Position.Y, AttackingTarget.Position.Y + SSTargetOffset.Y, 0, Parameter.SatelliteSSAnimationTotalMotionTime);
xSSAnimationMovement.Preset(Flipbook.Position.X, AttackingTarget.Position.X - Parameter.SatelliteSSAnimationMovementRange.X, 0, Parameter.SatelliteSSAnimationTotalMotionTime);
SatelliteSpecialAnimationState = SatelliteSpecialAnimationState.Moving1;
break;
/* After changing the physics variables its time to start moving to the selected
* position. Here only the satellite position is updated, when the movement ends the
* satellite now can start performing the attack. */
case SatelliteSpecialAnimationState.Moving1:
ySSAnimationMovement.RefreshCurrentPosition((float)GameTime.ElapsedGameTime.TotalSeconds);
xSSAnimationMovement.RefreshCurrentPosition((float)GameTime.ElapsedGameTime.TotalSeconds);
Flipbook.Position = new Vector2(xSSAnimationMovement.CurrentPosition, ySSAnimationMovement.CurrentPosition);
currentSSAnimationAngle = Parameter.SatelliteSSAnimationInitialAngle;
if (!ySSAnimationMovement.IsMoving)
{
SatelliteSpecialAnimationState = SatelliteSpecialAnimationState.Attacking;
}
break;
/* While attacking, the satellite just moves around by multiplying the cos factor to
* the x position. After 360 degrees are past, the satellite should start moving back
* to its former position. */
case SatelliteSpecialAnimationState.Attacking:
Flipbook.Position = new Vector2(xSSAnimationMovement.CurrentPosition, ySSAnimationMovement.CurrentPosition) - Parameter.SatelliteSSAnimationMovementRange * ((float)Math.Cos(currentSSAnimationAngle) - 1);
currentSSAnimationAngle += (float)Math.PI * Parameter.StelliteAttackSpeedFactor * (float)GameTime.ElapsedGameTime.TotalSeconds;
if (currentSSAnimationAngle > Parameter.SatelliteSSAnimationTotalAngle)
{
SatelliteSpecialAnimationState = SatelliteSpecialAnimationState.Initializing2;
}
break;
/* In order to make the satellite move all we gotta do is just reset the phys
* variables to come back. */
case SatelliteSpecialAnimationState.Initializing2:
ySSAnimationMovement.Preset(Flipbook.Position.Y, mobile.Position.Y + CurrentOffset.Y, 0, Parameter.SatelliteSSAnimationTotalMotionTime);
xSSAnimationMovement.Preset(Flipbook.Position.X, mobile.Position.X, 0, Parameter.SatelliteSSAnimationTotalMotionTime);
SatelliteSpecialAnimationState = SatelliteSpecialAnimationState.Moving2;
break;
/* Then start the motion. When its finally over, it changes back to the original
* behavior. */
case SatelliteSpecialAnimationState.Moving2:
ySSAnimationMovement.RefreshCurrentPosition((float)GameTime.ElapsedGameTime.TotalSeconds);
xSSAnimationMovement.RefreshCurrentPosition((float)GameTime.ElapsedGameTime.TotalSeconds);
Flipbook.Position = new Vector2(xSSAnimationMovement.CurrentPosition, ySSAnimationMovement.CurrentPosition);
if (!ySSAnimationMovement.IsMoving)
{
SatelliteSpecialAnimationState = SatelliteSpecialAnimationState.Idle;
}
break;
}
}
public void StartSSAnimation()
{
SatelliteSpecialAnimationState = SatelliteSpecialAnimationState.Initializing1;
}
