AROTBuilder and initial collision mesh cook integration

DataSpec/DNACommon/AROTBuilder.hpp

@@ -0,0 +1,43 @@
+#ifndef _DNACOMMON_AROTBUILDER_HPP_
+#define _DNACOMMON_AROTBUILDER_HPP_
+
+#include "DNACommon.hpp"
+#include "zeus/CAABox.hpp"
+#include "CMDL.hpp"
+#include <set>
+
+namespace DataSpec
+{
+
+struct AROTBuilder
+{
+    struct BitmapPool
+    {
+        std::vector<std::set<int>> m_pool;
+        size_t addIndices(const std::set<int>& indices);
+    } bmpPool;
+
+    struct Node
+    {
+        std::vector<Node> childNodes;
+        std::set<int> childIndices;
+        size_t poolIdx = 0;
+        uint8_t flags = 0;
+
+        size_t nodeOff = 0;
+        size_t nodeSz = 4;
+
+        bool addChild(const zeus::CAABox& curAabb, const zeus::CAABox& childAabb, int idx);
+        void nodeCount(size_t& sz, size_t& idxRefs, BitmapPool& bmpPool, size_t& curOff);
+        void writeIndirectionTable(athena::io::MemoryWriter& w);
+        void writeNodes(athena::io::MemoryWriter& w, int nodeIdx);
+        void advanceIndex(int& nodeIdx);
+    } rootNode;
+
+    void build(std::vector<std::vector<uint8_t>>& secs, const zeus::CAABox& fullAabb,
+               const std::vector<zeus::CAABox>& meshAabbs, const std::vector<DNACMDL::Mesh>& meshes);
+};
+
+}
+
+#endif // _DNACOMMON_AROTBUILDER_HPP_