metaforce/Runtime/Particle/CFlameWarp.cpp

93 lines
3.2 KiB
C++

#include "CFlameWarp.hpp"
#include "CStateManager.hpp"
namespace urde
{
void CFlameWarp::ModifyParticles(std::vector<CParticle>& particles)
{
if (x9c_stateMgr == 0 || particles.size() < 9)
return;
std::vector<std::pair<float, u8>> vec;
vec.reserve(particles.size());
x90_minSize = FLT_MAX;
x94_maxSize = FLT_MIN;
float maxTransp = 0.f;
u8 idx = 0;
for (CParticle& particle : particles)
{
float transp = 1.f - particle.x34_color.a;
if (transp > maxTransp)
{
float distSq = (particle.x4_pos - x74_warpPoint).magSquared();
if (distSq > x8c_maxDistSq && distSq < x98_maxInfluenceDistSq)
{
x8c_maxDistSq = distSq;
maxTransp = transp;
x80_floatingPoint = particle.x4_pos;
}
}
if (particle.x2c_lineLengthOrSize < x90_minSize)
x90_minSize = particle.x2c_lineLengthOrSize;
if (particle.x2c_lineLengthOrSize > x94_maxSize)
x94_maxSize = particle.x2c_lineLengthOrSize;
vec.emplace_back(transp, idx);
if (xa0_25_collisionWarp)
{
zeus::CVector3f delta = particle.x4_pos - particle.x10_prevPos;
if (delta.magSquared() >= 0.0011920929f)
{
zeus::CVector3f deltaNorm = delta.normalized();
zeus::CVector3f behindPos = particle.x10_prevPos - deltaNorm * 5.f;
zeus::CVector3f fullDelta = particle.x4_pos - behindPos;
CRayCastResult result =
x9c_stateMgr->RayStaticIntersection(behindPos, deltaNorm, fullDelta.magnitude(),
CMaterialFilter::MakeIncludeExclude({EMaterialTypes::Solid},
{EMaterialTypes::ProjectilePassthrough}));
if (result.IsValid())
{
float dist = result.GetPlane().pointToPlaneDist(particle.x4_pos);
if (dist <= 0.f)
{
particle.x4_pos =- result.GetPlane().normal() * dist;
if (result.GetPlane().normal().dot(particle.x1c_vel) < 0.f)
{
zeus::CVector3f prevStepPos = particle.x4_pos - particle.x1c_vel;
particle.x4_pos += (-result.GetPlane().pointToPlaneDist(prevStepPos) /
particle.x1c_vel.dot(result.GetPlane().normal()) - 1.f) * particle.x1c_vel;
particle.x1c_vel -= particle.x1c_vel * 0.001f;
}
}
}
}
}
++idx;
}
std::sort(vec.begin(), vec.end(), [](auto& a, auto& b) { return a.first < b.first; });
for (int i=0 ; i<9 ; ++i)
{
CParticle& part = particles[vec[i].second];
x4_vecs[i] = part.x4_pos;
if (i > 0)
{
zeus::CVector3f delta = x4_vecs[i] - x4_vecs[i-1];
if (delta.magnitude() < 0.0011920929f)
x4_vecs[i] += delta.normalized() * 0.0011920929f;
}
}
x4_vecs[0] = x74_warpPoint;
x80_floatingPoint = x4_vecs[8];
xa0_26_processed = true;
}
}