private SCNAction FlashAnimation(double duration)
{
var action = SCNAction.CustomAction(duration, (node, elapsedTime) => {
// animate color from HSB 48/100/100 to 48/30/100 and back
var elapsedTimePercentage = elapsedTime / (float)duration;
var saturation = 2.8f * (elapsedTimePercentage - 0.5f) * (elapsedTimePercentage - 0.5f) + 0.3f;
var material = node.Geometry.FirstMaterial;
if (material != null)
{
material.Diffuse.Contents = UIColor.FromHSBA(0.1333f, saturation, 1.0f, 1.0f);
}
});
return(action);
}
public void CollectBanana(SCNNode banana)
{
// Flyoff the banana to the screen space position score label.
// Don't increment score until the banana hits the score label.
// ignore collisions
banana.PhysicsBody = null;
BananasCollected++;
int variance = 60;
nfloat duration = 0.25f;
nfloat apexY = worldSpaceLabelScorePosition.Y * 0.8f + (new Random().Next(0, variance) - variance / 2);
worldSpaceLabelScorePosition.Z = banana.Position.Z;
var apex = new SCNVector3(banana.Position.X + 10 + (new Random().Next(0, variance) - variance / 2), apexY, banana.Position.Z);
SCNAction startFlyOff = SCNAction.MoveTo(apex, duration);
startFlyOff.TimingMode = SCNActionTimingMode.EaseOut;
SCNAction endFlyOff = SCNAction.CustomAction(duration, new SCNActionNodeWithElapsedTimeHandler((node, elapsedTime) => {
nfloat t = elapsedTime / duration;
var v = new SCNVector3(
apex.X + ((worldSpaceLabelScorePosition.X - apex.X) * t),
apex.Y + ((worldSpaceLabelScorePosition.Y - apex.Y) * t),
apex.X + ((worldSpaceLabelScorePosition.Z - apex.Z) * t));
node.Position = v;
}));
endFlyOff.TimingMode = SCNActionTimingMode.EaseInEaseOut;
SCNAction flyoffSequence = SCNAction.Sequence(new SCNAction[] { startFlyOff, endFlyOff });
banana.RunAction(flyoffSequence, () => {
Bananas.Remove(banana);
banana.RemoveFromParentNode();
// Add to score.
Score++;
GameSimulation.Sim.PlaySound("deposit.caf");
// Game Over
if (Bananas.Count == 0)
{
DoGameOver();
}
});
}