/// <summary>Changes the framerate of this animation.</summary>
public void ChangeFrameRate(int newRate)
{
FrameRate = newRate;
// For each actively running animation..
if (FirstInstance != null)
{
// What's the delay in seconds of a frame?
float newDelay = 1f / (float)FrameRate;
// For each..
SPAInstance current = FirstInstance;
while (current != null)
{
if (current.Animation == this)
{
current.FrameDelay = newDelay;
}
// Hop to the next one:
current = current.InstanceAfter;
}
}
}
public override void GoingOffDisplay()
{
if (Animation != null)
{
Animation.Stop();
Animation = null;
}
}
public override void GoingOnDisplay(Css.RenderableData context)
{
if (Animation == null && SPAFile != null)
{
Animation = SPAFile.GetInstance();
// Set the event context now:
Animation.SetContext(context);
}
}
/// <summary>Gets how many animations are actively playing.</summary>
/// <returns>The number of animations currently playing.</returns>
public static int ActiveCount()
{
int count = 0;
SPAInstance current = FirstInstance;
while (current != null)
{
count++;
current = current.InstanceAfter;
}
return(count);
}
/// <summary>Advances playback of any running animations and performs some garbage collection.
/// Called by <see cref="UI.Update"/>.</summary>
public static void Update(float deltaTime)
{
// Advance any active animations.
// These are all animations in our Instance chain.
if (FirstInstance != null)
{
SPAInstance current = FirstInstance;
while (current != null)
{
current.Update(deltaTime);
current = current.InstanceAfter;
}
}
}
/// <summary>A shortcut for instancing it.</summary>
public Material Start(Shader shader)
{
if (SPAFile == null)
{
throw new Exception("Tried to load a broken SPA.");
}
if (Animation == null)
{
Animation = SPAFile.GetInstance();
}
// Setup using the given shader:
Animation.Setup(shader);
return(Animation.AnimatedMaterial);
}
/// <summary>Creates a playable instance of this animation.
/// Instances are required as the same animation could be visible multiple times.</summary>
/// <returns>A playable form of this animation.</returns>
public SPAInstance GetInstance()
{
// Create the instance:
SPAInstance instance = new SPAInstance(this);
// Push the instance to the global animate queue.
if (FirstInstance == null)
{
FirstInstance = LastInstance = instance;
}
else
{
instance.InstanceBefore = LastInstance;
LastInstance = LastInstance.InstanceAfter = instance;
}
return(instance);
}
/// <summary>Clears all active SPA animations.</summary>
public static void Clear()
{
LastInstance = FirstInstance = null;
}