Add ECS framework

CopiumEngine/src/copium/ecs/Entity.cpp

@@ -0,0 +1,76 @@
+#include "copium/ecs/Entity.h"
+
+namespace Copium
+{
+  Entity::Entity()
+    : manager{nullptr}, id{INVALID_ENTITY}
+  {}
+
+  Entity::Entity(ECSManager* manager)
+    : manager{manager}, id{INVALID_ENTITY}
+  {}
+
+  Entity::Entity(ECSManager* manager, EntityID id)
+    : manager{manager}, id{id}
+  {}
+
+  Entity::operator EntityID() const
+  {
+    return id;
+  }
+
+  void Entity::operator=(EntityID entityId)
+  {
+    id = entityId;
+  }
+
+  bool Entity::operator==(const Entity& entity)
+  {
+    return id == entity.id;
+  }
+
+  bool Entity::operator!=(const Entity& entity)
+  {
+    return id != entity.id;
+  }
+
+  Entity::operator bool() const
+  {
+    if (id == INVALID_ENTITY)
+      return false;
+    if (manager)
+      return manager->ValidEntity(id);
+    return false;
+  }
+
+  void Entity::Invalidate()
+  {
+    id = INVALID_ENTITY;
+  }
+
+  void Entity::Destroy()
+  {
+    if (*this)
+      manager->DestroyEntity(id);
+  }
+
+  void Entity::SetID(EntityID aId)
+  {
+    id = aId;
+  }
+
+  EntityID Entity::GetID() const
+  {
+    return id;
+  }
+
+  ECSManager* Entity::GetManager() const
+  {
+    return manager;
+  }
+
+  Entity Entity::Create(ECSManager* manager)
+  {
+    return {manager, manager->CreateEntity()};
+  }
+}