void SpawnParticles(Vector3 pos)
{
int spawnNumber = (int)(Volume * partsPerUnit);
Vector3 spawnPos;
List <ParticleSystem.Particle> newParticles = new List <ParticleSystem.Particle>();
for (int i = 0; i < spawnNumber; i++)
{
spawnPos = pos + Random.insideUnitSphere * Radius / 2;
if (gameArea.Contains(spawnPos))
{
particleContainer.Add(spawnPos);
newParticles.Add(makeParticle(spawnPos));
}
}
//Get the particles already in the system
ParticleSystem.Particle[] particles_original = new ParticleSystem.Particle[particles.particleCount];
particles.GetParticles(particles_original);
ParticleSystem.Particle[] particles_new = newParticles.ToArray();
//Combine the currently existing particles with the new ones you just created
ParticleSystem.Particle[] particles_final = new ParticleSystem.Particle[particles_original.Length + particles_new.Length];
particles_original.CopyTo(particles_final, 0);
particles_new.CopyTo(particles_final, particles_original.Length);
//And put them into the particle system
particles.SetParticles(particles_final, particles_final.Length);
}
/// <summary>Called when a particle leaves the trigger.</summary>
/// <author>Liam Ireland</author>
private void OnParticleTrigger()
{
List <ParticleSystem.Particle> particles = new List <ParticleSystem.Particle>();
List <ParticleSystem.Particle> newParticles = new List <ParticleSystem.Particle>(); // an arraycontaining the particles to be added
foreach (ParticleSystem.Particle particle in particles) // for every particle that just left a trigger
{
Collider closestCollider = closestStaticCollider(particle.position);
Vector3 closestPointOnStaticCollider = closestCollider.bounds.ClosestPoint(particle.position);
// get the distance from the particle to the shock wave origin
float distanceFromParticleToOrigin = Vector3.Distance(particle.position, particleEmitter.transform.position);
// get the distance from the closest point on the collider the particle nearlly missed to the shock wave origin
float distanceFromColliderToOrigin = Vector3.Distance(closestPointOnStaticCollider, particleEmitter.transform.position);
// if the distance from the particle to the shockwave origin is greater than the closest point to the particle on the collider we're checking to the shockwave origin - it makes sense in my mind, I don't know how to explain it easisly
if (distanceFromParticleToOrigin > distanceFromColliderToOrigin)
{
// doesn't quite work as intended yet - need to find a better check
// TODO - find a better check above
if (particle.velocity.y <= 0) // pretty dumb, need more robust solution
{
for (int i = 0; i < 4; i++) // create multiple new particles for every near miss of a static collider
{
ParticleSystem.Particle newParticle = new ParticleSystem.Particle();
newParticle = particle;
newParticle.velocity = new Vector3(newParticle.velocity.x + UnityEngine.Random.Range(-1, 1), newParticle.velocity.y - (i * 0.75F), newParticle.velocity.z + UnityEngine.Random.Range(-1, 1));
newParticle.startColor = new Color32(255, 0, 0, 255);
newParticles.Add(newParticle);
}
}
}
}
ParticleSystem.Particle[] oldParticles = new ParticleSystem.Particle[particleEmitter.particleCount];
particleEmitter.GetParticles(oldParticles);
ParticleSystem.Particle[] finalParticles = new ParticleSystem.Particle[oldParticles.Length + newParticles.Count];
oldParticles.CopyTo(finalParticles, 0);
newParticles.ToArray().CopyTo(finalParticles, oldParticles.Length);
particleEmitter.SetParticles(finalParticles, finalParticles.Length);
}