void LateUpdate()
{
// update all Position & render
Vector3 offset = new Vector3(P5Setting.SCREEN_W / 2, P5Setting.SCREEN_H / 2, 0);
Vector3 minSize = new Vector3(1, 1, 0) * PARTICLE_MINMUM_SIZE;
for (int i = 0; i < maxParticles; i++)
{
UnityEngine.ParticleSystem.Particle particle = renderParticles[i];
P5Particle pObj = particles[i]; // processing
float pSize = pObj.isStay ? PARTICLE_STAY_SIZE : PARTICLE_SIZE;
// StretchedBillboardを使っているのでvelocityが0になると表示されなくなるのを回避
Vector3 t_velocity = new Vector3(pObj.vx, pObj.vy, 0);
if (pObj.vMagnitude < MIN_MAGNITUDE)
{
t_velocity = minSize;
}
float z = -0.5f * pObj.vMagnitude;
particle.position = new Vector3(pObj.x, pObj.y, z) - offset;
//Stretched Billboardを使用しているときに上部MIN_MAGNITUDEの処理をするときに、
//レンダリング位置がずれるのを回避する為にスムージング処理。
//PARTICLE_MINMUM_SIZEを小さくする必要もある。
float smooth = pObj.isStay ? 0.0025f : 0.5f;
particle.velocity += (t_velocity - particle.velocity) * smooth;
//renderParticle.velocity = t_velocity;
//renderParticle.velocity = pObj.renderV;
particle.size = pSize * pObj.mass * UPSCALE_SIZE;
Color color = pObj.color;
color.a = pObj.alpha;
particle.color = color;
renderParticles[i] = particle;
}
//
psys.SetParticles(renderParticles, maxParticles);
}
public void Init(MSAFluidSolver2D fluidSolver)
{
allParticles = maxParticles + maxStayParticles;
p5particles = new P5Particle[allParticles];
curIndex = 0;
for (int i = 0; i < maxParticles; i++)
{
p5particles [i] = new P5Particle();
p5particles [i].fluidSolver = fluidSolver;
p5particles [i].isSpark = true;
}
// stay particle
for (int i = maxParticles; i < allParticles; i++)
{
p5particles [i] = new P5Particle();
p5particles [i].fluidSolver = fluidSolver;
p5particles [i].isSpark = true;
/*
* p5particles[i].isStay = true;
* float x = Random.Range(0, Setting.SCREEN_W);
* float y = Random.Range(0, Setting.SCREEN_H);
* Color color = stayColor;
* //Color color = Color.cyan;
* p5particles[i].init(x, y, color);
* float t_alpha = Random.Range(0.4f, 0.9f);
* //p5particles[i].mass = 0.4f;
* p5particles[i].mass = Random.Range(0.4f, 0.9f);
* p5particles[i].StartAppearAnime(t_alpha);
*/
}
p5ParticleRenderer.Init(p5particles);
}
