World indices check

src/content/ContentIndexLUT.h

@@ -0,0 +1,33 @@
+#ifndef CONTENT_CONTENT_INDEX_LUT_H_
+#define CONTENT_CONTENT_INDEX_LUT_H_
+
+#include "../typedefs.h"
+#include <string>
+#include <filesystem>
+
+class Content;
+
+/* Content indices lookup table or report 
+   used to convert world with different indices
+   Building with indices.json */
+class ContentIndexLUT {
+    blockid_t* blocks;
+    std::string* blockNames;
+public:
+    ContentIndexLUT(size_t blocks, const Content* content);
+    ~ContentIndexLUT();
+
+    inline blockid_t getBlockId(blockid_t index) {
+        return blocks[index];
+    }
+
+    inline void setBlock(blockid_t index, std::string name, blockid_t id) {
+        blocks[index] = id;
+        blockNames[index] = name;
+    }
+
+    static ContentIndexLUT* create(const std::filesystem::path& filename, 
+                                   const Content* content);
+};
+
+#endif // CONTENT_CONTENT_INDEX_LUT_H_