diff --git a/Source/Contents/Effects/ParticlePool.cpp b/Source/Contents/Effects/ParticlePool.cpp
index c98b17a1..a49c4576 100644
--- a/Source/Contents/Effects/ParticlePool.cpp
+++ b/Source/Contents/Effects/ParticlePool.cpp
@@ -1,10 +1,43 @@
 #include "Contents/Effects/ParticlePool.h"
 
 // OFFSET: 0x00B402F0
+// FUNCTION: fn_18849
+ParticlePool::ParticlePool() {
+  for (auto& entry : this->particles) {
+    entry.second = false;
+  }
+  this->active = 0;
+}
 
 // OFFSET: 0x00B40560
+// FUNCTION: fn_18851
+ParticlePool::~ParticlePool() {
+  this->Clear();
+}
 
 // OFFSET: 0x00B40740
+// FUNCTION: fn_18854
+CParticle* ParticlePool::Acquire() {
+  if (this->particles.size() <= this->active) {
+    return nullptr;
+  }
+
+  CParticle* particle = nullptr;
+  auto it = this->particles.begin();
+  for (; it != this->particles.end(); ++it) {
+    if (!it->second) {
+      break;
+    }
+  }
+
+  if (it != this->particles.end()) {
+    particle = it->first;
+    it->second = true;
+    ++this->active;
+  }
+
+  return particle;
+}
 
 // OFFSET: 0x00B407A0
 // FUNCTION: fn_18855
@@ -14,9 +47,37 @@ void ParticlePool::Clear() {
 }
 
 // OFFSET: 0x00B407F0
+// FUNCTION: fn_18856
+void ParticlePool::Release(CParticle* particle) {
+  if (this->particles.find(particle) != this->particles.end() && this->particles[particle]) {
+    --this->active;
+    this->particles[particle] = false;
+  }
+}
 
 // OFFSET: 0x00B40890
+// FUNCTION: fn_18857
+bool ParticlePool::IsActive(CParticle* particle) {
+  if (this->particles.find(particle) != this->particles.end()) {
+    return this->particles[particle];
+  }
+
+  return false;
+}
 
 // OFFSET: 0x00B408E0
+// FUNCTION: fn_18858
+void ParticlePool::ActivateAll() {
+  for (auto& entry : this->particles) {
+    entry.second = true;
+  }
+  this->active = this->particles.size();
+}
 
 // OFFSET: 0x00B40B20
+// FUNCTION: fn_18860
+void ParticlePool::Add(CParticle* particle) {
+  if (this->particles.find(particle) == this->particles.end()) {
+    this->particles[particle] = false;
+  }
+}