Add ECS framework

CopiumEngine/src/copium/ecs/ComponentPool.h

@@ -0,0 +1,90 @@
+#pragma once
+
+#include "copium/ecs/Config.h"
+#include "copium/ecs/EntitySet.h"
+#include "copium/ecs/ComponentPoolBase.h"
+
+#include <vector>
+
+namespace Copium
+{
+  template <typename Component>
+  class ComponentPool : public ComponentPoolBase
+  {
+    using Iterator = typename std::vector<Component>::iterator;
+  private:
+    std::vector<Component> components;
+
+  public:
+    ComponentPool(EntityID entity, const Component& component)
+    {
+      Emplace(entity, component);
+    }
+
+    Component& Emplace(EntityID entity, const Component& component)
+    {
+      components.push_back(component);
+      entities.Emplace(entity);
+      return components.back();
+    }
+
+    void Pop()
+    {
+      components.pop_back();
+      entities.Pop();
+    }
+
+    bool Erase(EntityID entity)
+    {
+      size_t index = entities.Find(entity);
+      if (!entities.Erase(entity))
+        return false;
+      components.erase(components.begin() + index);
+      return true;
+    }
+
+    Component& At(size_t index)
+    {
+      return operator[](index);
+    }
+
+    size_t Find(EntityID entity)
+    {
+      return entities.Find(entity);
+    }
+
+    Component* FindComponent(EntityID entity)
+    {
+      size_t index = Find(entity);
+      if (index < Size())
+        return &components[index];
+      return nullptr;
+    }
+
+    Component& operator[](size_t index)
+    {
+      CP_ASSERT(index < components.size(), "Index Out of Bound Exception");
+      return components[index];
+    }
+
+    size_t Size()
+    {
+      return components.size();
+    }
+
+    Iterator Back()
+    {
+      return components.back();
+    }
+
+    Iterator begin()
+    {
+      return components.begin();
+    }
+
+    Iterator end()
+    {
+      return components.end();
+    }
+  };
+}