/// <summary>
/// Emits particles for a ParticleInteractionResult.
/// </summary>
/// <param name="interactionResult">The interaction result to use data from.</param>
/// <param name="point">The world position to emit the particles at.</param>
/// <param name="normal">The surface normal used to set the particle's rotation.</param>
/// <param name="priority">The priority of the particles. Particles with a priority less than this will be "stolen" and used for this result.</param>
/// <returns>The ImpactParticles that will be used to emit the particles. Will be null if no particles are available.</returns>
public static ImpactParticlesBase EmitParticles(ParticleInteractionResult interactionResult, Vector3 point, Vector3 normal, int priority)
{
if (interactionResult.ParticlesTemplate == null)
{
return(null);
}
ImpactParticlePool pool = poolGroup.GetOrCreatePool(interactionResult.ParticlesTemplate, interactionResult.ParticlesTemplate.PoolSize);
if (pool != null)
{
ImpactParticlesBase a = pool.GetObject();
//If all objects are in use, try to get one with a lower priority
if (a == null)
{
a = pool.GetObject((p) => p.Priority < priority);
}
if (a != null)
{
a.EmitParticles(interactionResult, point, normal, priority);
}
return(a);
}
return(null);
}
/// <summary>
/// Updates for sliding and rolling and emits new particles if the particles are not looped.
/// Will stop emitting if the new parameters don't produce valid data.
/// </summary>
/// <param name="newResult">The updated result.</param>
public void KeepAlive(IInteractionResult newResult)
{
IsAlive = true;
ParticleInteractionResult particleInteractionResult = newResult as ParticleInteractionResult;
if (IsParticleLooped && particlesInstance != null)
{
particlesInstance.UpdateTransform(particleInteractionResult.OriginalData.Point, particleInteractionResult.OriginalData.Normal);
}
else
{
if (EmissionIntervalType == InteractionIntervalType.Time)
{
intervalCounter += Time.fixedDeltaTime;
}
else
{
intervalCounter = Vector3.Distance(particleInteractionResult.OriginalData.Point, previousEmissionPosition);
}
if (intervalCounter >= currentEmissionIntervalTarget)
{
currentEmissionIntervalTarget = EmissionInterval.RandomInRange();
particlesInstance = ImpactParticlePool.EmitParticles(this, particleInteractionResult.OriginalData.Point, particleInteractionResult.OriginalData.Normal, parent.Priority);
intervalCounter = 0;
previousEmissionPosition = particleInteractionResult.OriginalData.Point;
}
}
}
/// <summary>
/// Emit particles using our data.
/// </summary>
/// <param name="parent">The Impact Object that created this result.</param>
public void Process(IImpactObject parent)
{
this.parent = parent;
particlesInstance = ImpactParticlePool.EmitParticles(this, OriginalData.Point, OriginalData.Normal, InteractionResultExtensions.GetPriority(OriginalData.PriorityOverride, parent));
IsAlive = true;
currentEmissionIntervalTarget = EmissionInterval.RandomInRange();
//Dispose immediately for Collision interaction types
if (OriginalData.InteractionType == InteractionData.InteractionTypeCollision)
{
Dispose();
}
}
/// <summary>
/// Creates an object pool instance for the particle prefab.
/// </summary>
public override void Preload()
{
ImpactParticlePool.PreloadPoolForParticle(ParticlePrefab);
ImpactManagerInstance.CreateInteractionResultPool <Interactions.Particles.ParticleInteractionResult>(interactionResultPoolKey);
}