Remove arbitrary particle limit of 256, unfortunately this breaks various particle systems including Essence Shockwave and flamethrower particles

Runtime/MP1/World/CMetroidPrimeEssence.cpp

@@ -203,8 +203,7 @@ void CMetroidPrimeEssence::DoUserAnimEvent(CStateManager& mgr, const CInt32POINo
   }
   case EUserEventType::BeginAction: {
     SShockWaveData data(x660_, x698_, 2.f, x664_, x70c_);
-    // TODO: Need to fix CElementGen accessing null ParticleAccessParameters
-    // data.SetSpeedIncrease(180.f);
+    data.SetSpeedIncrease(180.f);
     DropShockwave(mgr, data);
     ShakeCamera(mgr, 1.f);
     return;

Runtime/Particle/CElementGen.cpp

@@ -83,7 +83,6 @@ CElementGen::CElementGen(TToken<CGenDescription> gen, EModelOrientationType orie
 
   if (CIntElement* mbspElem = desc->x48_x34_MBSP.get())
     mbspElem->GetValue(x74_curFrame, x270_MBSP);
-  m_maxMBSP = x270_MBSP;
 
   if (CModVectorElement* elem = desc->x7c_x68_VEL1.get()) {
     x280_VELSources[0] = elem;
@@ -152,13 +151,11 @@ CElementGen::CElementGen(TToken<CGenDescription> gen, EModelOrientationType orie
 
   if (CIntElement* maxpElem = desc->x28_x1c_MAXP.get()) {
     maxpElem->GetValue(x74_curFrame, x90_MAXP);
-    m_maxMAXP = maxpElem->GetMaxValue();
   }
 
-  m_maxMAXP = std::min(m_maxMAXP, 256);
-  x30_particles.reserve(m_maxMAXP);
+  x30_particles.reserve(x90_MAXP);
   if (x2c_orientType == EModelOrientationType::One)
-    x50_parentMatrices.resize(m_maxMAXP);
+    x50_parentMatrices.resize(x90_MAXP);
 
   x26c_31_LINE = desc->x44_24_x30_24_LINE;
   x26d_24_FXLL = desc->x44_25_x30_25_FXLL;
@@ -205,14 +202,14 @@ CElementGen::CElementGen(TToken<CGenDescription> gen, EModelOrientationType orie
     boo::ObjToken<boo::ITexture> tex;
     if (texr)
       tex = texr->GetValueTexture(0).GetObj()->GetBooTexture();
-    int maxVerts = (m_maxMAXP == 0 ? 256 : m_maxMAXP);
+    int maxVerts = x90_MAXP;
     m_lineRenderer.reset(
         new CLineRenderer(CLineRenderer::EPrimitiveMode::Lines, maxVerts * 2, tex, x26c_26_AAPH, x26c_28_zTest));
   } else {
     m_shaderClass = CElementGenShaders::GetShaderClass(*this);
   }
 
-  size_t maxInsts = x26c_30_MBLR ? (m_maxMBSP * m_maxMAXP) : m_maxMAXP;
+  size_t maxInsts = x26c_30_MBLR ? (x270_MBSP * x90_MAXP) : x90_MAXP;
   maxInsts = (maxInsts == 0 ? 256 : maxInsts);
 
   CGraphics::CommitResources([&](boo::IGraphicsDataFactory::Context& ctx) {
@@ -274,7 +271,6 @@ bool CElementGen::InternalUpdate(double dt) {
   if (x26c_30_MBLR && dt > 0.0) {
     if (CIntElement* mbspElem = desc->x48_x34_MBSP.get())
       mbspElem->GetValue(x74_curFrame, x270_MBSP);
-    x270_MBSP = std::min(x270_MBSP, m_maxMBSP);
   }
 
   int frameUpdateCount = 0;
@@ -343,12 +339,8 @@ void CElementGen::AccumulateBounds(const zeus::CVector3f& pos, float size) {
 }
 
 void CElementGen::UpdateAdvanceAccessParameters(u32 activeParticleCount, s32 particleFrame) {
-  if (activeParticleCount >= x60_advValues.size()) {
-    CParticleGlobals::instance()->m_particleAccessParameters = nullptr;
-    return;
-  }
-
-  CGenDescription* desc = x1c_genDesc.GetObj();
+  printf("Calling UpdateAdvanceAccessParameters\n");
+  CGenDescription* desc = x28_loadedGenDesc;
 
   std::array<float, 8>& arr = x60_advValues[activeParticleCount];
   CParticleGlobals::instance()->m_particleAccessParameters = &arr;
@@ -404,9 +396,6 @@ void CElementGen::UpdateExistingParticles() {
 
   x25c_activeParticleCount = 0;
   CParticleGlobals::instance()->SetEmitterTime(x74_curFrame);
-  if (x25c_activeParticleCount < x60_advValues.size())
-    CParticleGlobals::instance()->m_particleAccessParameters = &x60_advValues[x25c_activeParticleCount];
-  else
   CParticleGlobals::instance()->m_particleAccessParameters = nullptr;
 
   for (auto it = x30_particles.begin(); it != x30_particles.end();) {
@@ -498,13 +487,14 @@ void CElementGen::CreateNewParticles(int count) {
   CGlobalRandom gr(x27c_randState);
   x30_particles.reserve(x90_MAXP);
   if (x26d_28_enableADV && x60_advValues.empty())
-    x60_advValues.resize(m_maxMAXP);
+    x60_advValues.resize(x90_MAXP);
 
   CParticleGlobals::instance()->m_particleAccessParameters = nullptr;
 
   for (int i = 0; i < count; ++i) {
     CParticle& particle = x30_particles.emplace_back();
     ++g_ParticleAliveCount;
+    u32 particleCount = x30_particles.size() - 1;
     ++x25c_activeParticleCount;
     ++x260_cumulativeParticles;
     if (x2c_orientType == EModelOrientationType::One) {
@@ -518,14 +508,16 @@ void CElementGen::CreateNewParticles(int count) {
     CParticleGlobals::instance()->SetParticleLifetime(particle.x0_endFrame);
     CParticleGlobals::instance()->UpdateParticleLifetimeTweenValues(0);
     g_currentParticle = &particle;
-    if (x26d_28_enableADV)
-      UpdateAdvanceAccessParameters(x30_particles.size() - 1, 0);
+    if (x26d_28_enableADV) {
+      UpdateAdvanceAccessParameters(particleCount, 0);
+    }
     particle.x0_endFrame += x74_curFrame;
 
-    if (CColorElement* colr = desc->x30_x24_COLR.get())
+    if (CColorElement* colr = desc->x30_x24_COLR.get()) {
       colr->GetValue(0, particle.x34_color);
-    else
+    } else {
       particle.x34_color = zeus::skWhite;
+    }
 
     if (CEmitterElement* emtr = desc->x40_x2c_EMTR.get()) {
       emtr->GetValue(x74_curFrame, particle.x4_pos, particle.x1c_vel);
@@ -840,12 +832,13 @@ void CElementGen::Render(const CActorLights* actorLights) {
 }
 
 void CElementGen::RenderModels(const CActorLights* actorLights) {
-  CGenDescription* desc = x1c_genDesc.GetObj();
-
+  CParticleGlobals::instance()->m_particleAccessParameters = nullptr;
   if (x26d_26_modelsUseLights)
     CGraphics::SetLightState(x274_backupLightActive);
   CGlobalRandom gr(x27c_randState);
 
+  CGenDescription* desc = x1c_genDesc.GetObj();
+
   SUVElementSet uvs = {0.f, 0.f, 1.f, 1.f};
   CUVElement* texr = desc->x54_x40_TEXR.get();
   CTexture* cachedTex = nullptr;
@@ -948,10 +941,10 @@ void CElementGen::RenderModels(const CActorLights* actorLights) {
     CParticleGlobals::instance()->SetParticleLifetime(particle.x0_endFrame - particle.x28_startFrame);
     int partFrame = x74_curFrame - particle.x28_startFrame - 1;
     CParticleGlobals::instance()->UpdateParticleLifetimeTweenValues(partFrame);
-    if (i < x60_advValues.size())
+    if (x26d_28_enableADV) {
       CParticleGlobals::instance()->m_particleAccessParameters = &x60_advValues[i];
-    else
-      CParticleGlobals::instance()->m_particleAccessParameters = nullptr;
+    }
+
     CVectorElement* pmop = desc->x6c_x58_PMOP.get();
     if (pmop)
       pmop->GetValue(partFrame, pmopVec);

Runtime/Particle/CElementGen.hpp

@@ -65,7 +65,6 @@ private:
   bool x88_particleEmission = true;
   float x8c_generatorRemainder = 0.f;
   int x90_MAXP = 0;
-  int m_maxMAXP = 256;
   u16 x94_randomSeed = g_GlobalSeed;
   float x98_generatorRate = 1.f;
   std::array<float, 16> x9c_externalVars{};
@@ -101,7 +100,6 @@ private:
   bool x26d_27_enableOPTS : 1;
   bool x26d_28_enableADV : 1 = false;
   int x270_MBSP = 0;
-  int m_maxMBSP = 0;
   ERglLightBits x274_backupLightActive = ERglLightBits::None;
   std::array<bool, 4> x278_hasVMD{};
   CRandom16 x27c_randState;
@@ -225,7 +223,6 @@ public:
   static void SetMoveRedToAlphaBuffer(bool move);
 
   s32 GetMaxParticles() const { return x90_MAXP; }
-  s32 GetMaxMaxParticles() const { return m_maxMAXP; }
 
   std::vector<CParticle> const& GetParticles() const { return x30_particles; }
   std::vector<CParticle> &GetParticles() { return x30_particles; }

Runtime/Weapon/CNewFlameThrower.cpp

@@ -368,15 +368,6 @@ void CNewFlameThrower::UpdateFx(const zeus::CTransform& xf, float dt, CStateMana
         float tmp = std::clamp(unk.magnitude() * 30.f, 1.f, x37c_26_runningSlowish ? 2.f : 4.f);
 
         x3b4_numSmokeParticlesSpawned = std::max(static_cast<int>(round(tmp)), x3b4_numSmokeParticlesSpawned - 1);
-        // INSERT
-        if ((x35c_mainSmokeGen->GetParticles().size() + x3b4_numSmokeParticlesSpawned) >
-            x35c_mainSmokeGen->GetMaxMaxParticles()) {
-          x3b4_numSmokeParticlesSpawned = x3b4_numSmokeParticlesSpawned -
-                                          ((x35c_mainSmokeGen->GetParticles().size() + x3b4_numSmokeParticlesSpawned) -
-                                           x35c_mainSmokeGen->GetMaxMaxParticles());
-        }
-        // END INSERT
-        // This limit shouldn't be needed, m_maxMAXP should be removed?
 
         x35c_mainSmokeGen->SetTranslation(swoosh_1.xc_translation);
         x35c_mainSmokeGen->SetOrientation(swoosh_1.x38_orientation);