public static Color GetCurrentParticleColor(SeekerBarrier barrier)
{
if (barrier is CustomSeekerBarrier customBarrier)
{
return(customBarrier.particleColor);
}
return(getAndLerp(controller => controller.particleColor, Color.White, Color.Lerp));
}
public static float GetCurrentParticleTransparency(SeekerBarrier barrier)
{
if (barrier is CustomSeekerBarrier customBarrier)
{
return(customBarrier.particleTransparency);
}
return(getAndLerp(controller => controller.particleTransparency, 0.5f, MathHelper.Lerp));
}
private static void hookSeekerBarrierParticles(On.Celeste.SeekerBarrier.orig_Update orig, SeekerBarrier self)
{
float particleDirection = controllerOnScreen?.particleDirection ?? 0f;
if (self is CustomSeekerBarrier customBarrier)
{
particleDirection = customBarrier.particleDirection;
}
// no need to account for screen transitions: particles are frozen during them.
if (particleDirection == 0f)
{
// default settings: do nothing
orig(self);
return;
}
// save all particles
DynData <SeekerBarrier> selfData = new DynData <SeekerBarrier>(self);
List <Vector2> particles = new List <Vector2>(selfData.Get <List <Vector2> >("particles"));
float[] speeds = selfData.Get <float[]>("speeds");
// run vanilla code
orig(self);
// move particles again ourselves, except on the direction we want.
for (int i = 0; i < particles.Count; i++)
{
// compute new position
Vector2 newPosition = particles[i] + Vector2.UnitY.Rotate((float)(particleDirection * Math.PI / 180)) * speeds[i % speeds.Length] * Engine.DeltaTime;
// make sure it stays in bounds
while (newPosition.X < 0)
{
newPosition.X += self.Width;
}
while (newPosition.Y < 0)
{
newPosition.Y += self.Height;
}
newPosition.X %= self.Width;
newPosition.Y %= self.Height;
// replace the particle position
particles[i] = newPosition;
}
// replace them.
selfData["particles"] = particles;
}
