WIP

entitysystem/systems/BillboardSystem.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "BaseSystem.h"
+#include "rendering/renderer.h"
+#include <unordered_map>
+#include <string>
+
+// Renders Billboard components as camera-facing textured quads.
+// Instances sharing the same texture are batched into one draw call.
+class BillboardSystem : public BaseSystem
+{
+public:
+    BillboardSystem();
+    ~BillboardSystem();
+    void Render(ECWorld& world) override;
+
+private:
+    struct BillboardInstance {
+        glm::vec3 position; // camera-relative
+        float     size;
+    };
+
+    struct RenderState;
+    std::unique_ptr<RenderState> m_renderState;
+};