WIP

entitysystem/systems/LODSystem.cpp

@@ -0,0 +1,33 @@
+#include "stdafx.h"
+#include "LODSystem.h"
+
+#include "entitysystem/ECWorld.h"
+#include "entitysystem/components/BasicComponents.h"
+#include "entitysystem/components/RenderComponents.h"
+#include "utilities/Globals.h"
+#include "model/AnimModel.h"
+
+void LODSystem::Update(ECWorld& world, float dt)
+{
+    const glm::dvec3 camPos{
+        Global.pCamera.Pos.x,
+        Global.pCamera.Pos.y,
+        Global.pCamera.Pos.z
+    };
+
+    world.Each<ECSComponent::LODController, ECSComponent::Transform>(
+        entt::exclude<ECSComponent::Disabled>,
+        [&](entt::entity entity,
+            ECSComponent::LODController& lod,
+            ECSComponent::Transform& transform)
+        {
+            double dist = glm::length(camPos - transform.Position);
+            bool inRange = (dist >= lod.RangeMin) && (dist <= lod.RangeMax);
+
+            if (auto* mesh = world.GetComponent<ECSComponent::MeshRenderer>(entity)) {
+                mesh->visible = inRange;
+                if (mesh->modelInstance)
+                    mesh->modelInstance->visible(inRange);
+            }
+        });
+}