Add Scene with systems

- Add Scene class which populates the engine with Systems which handles all logic in the game - Add Systems to ecs
2023-05-20 19:45:15 +02:00
parent 05d2c2940b
commit 84b24457a0
20 changed files with 626 additions and 42 deletions
@@ -0,0 +1,59 @@
+#include "copium/ecs/SystemPool.h"
+
+namespace Copium
+{
+  SystemPool::SystemPool(ECSManager* manager)
+    : manager{manager}
+  {}
+
+  SystemPool::~SystemPool()
+  {
+    for (auto& system : systemOrder)
+    {
+      delete system;
+    }
+    systemOrder.clear();
+    systems.clear();
+  }
+
+  SystemOrderer SystemPool::AddSystem(const std::type_index& systemId, SystemBase* system)
+  {
+    system->manager = manager;
+    systems.emplace(systemId, system);
+    systemOrder.emplace_back(system);
+    return SystemOrderer{systemId, this};
+  }
+
+  void SystemPool::Update()
+  {
+    for (auto& system : systemOrder)
+    {
+      system->Run();
+    }
+  }
+
+  void SystemPool::MoveSystemAfter(const std::type_index& systemId, const std::type_index& afterSystemId)
+  {
+    auto it1 = systems.find(systemId);
+    CP_ASSERT(it1 != systems.end(), "System does not exist in SystemPool");
+    auto it2 = systems.find(afterSystemId);
+    CP_ASSERT(it2 != systems.end(), "System does not exist in SystemPool");
+
+    auto itSystemId = std::find(systemOrder.rbegin(), systemOrder.rend(), it1->second);
+    auto itAfterSystemId = std::find(systemOrder.rbegin(), systemOrder.rend(), it2->second);
+    std::rotate(itSystemId, itSystemId + 1, itAfterSystemId);
+  }
+
+  void SystemPool::MoveSystemBefore(const std::type_index& systemId, const std::type_index& beforeSystemId)
+  {
+    auto it1 = systems.find(systemId);
+    CP_ASSERT(it1 != systems.end(), "System does not exist in SystemPool");
+    auto it2 = systems.find(beforeSystemId);
+    CP_ASSERT(it2 != systems.end(), "System does not exist in SystemPool");
+
+    auto itSystemId = std::find(systemOrder.rbegin(), systemOrder.rend(), it1->second);
+    auto itBeforeSystemId = std::find(systemOrder.rbegin(), systemOrder.rend(), it2->second);
+
+    std::rotate(itSystemId, itSystemId + 1, itBeforeSystemId + 1);
+  }
+}