Worlds indexing

src/files/WorldConverter.cpp

@@ -0,0 +1,71 @@
+#include "WorldConverter.h"
+
+#include <memory>
+#include <iostream>
+#include <stdexcept>
+#include "WorldFiles.h"
+#include "../voxels/Chunk.h"
+#include "../content/ContentLUT.h"
+
+namespace fs = std::filesystem;
+using std::string;
+using std::unique_ptr;
+using fs::path;
+
+WorldConverter::WorldConverter(path folder, 
+                               const Content* content, 
+                               const ContentLUT* lut) 
+    : lut(lut), content(content) {
+    DebugSettings settings;
+    wfile = new WorldFiles(folder, settings);
+
+    path regionsFolder = wfile->getRegionsFolder();
+    if (!fs::is_directory(regionsFolder)) {
+        std::cerr << "nothing to convert" << std::endl;
+        return;
+    }
+    for (auto file : fs::directory_iterator(regionsFolder)) {
+        regions.push(file.path());
+    }
+}
+
+WorldConverter::~WorldConverter() {
+    delete wfile;
+}
+
+bool WorldConverter::hasNext() const {
+    return !regions.empty();
+}
+
+void WorldConverter::convertNext() {
+    if (!hasNext()) {
+        throw std::runtime_error("no more regions to convert");
+    }
+    path regfile = regions.front();
+    regions.pop();
+    if (!fs::is_regular_file(regfile))
+        return;
+    int x, y;
+    string name = regfile.stem().string();
+    if (!WorldFiles::parseRegionFilename(name, x, y)) {
+        std::cerr << "could not parse name " << name << std::endl;
+        return;
+    }
+    std::cout << "converting region " << name << std::endl;
+    for (uint cz = 0; cz < REGION_SIZE; cz++) {
+        for (uint cx = 0; cx < REGION_SIZE; cx++) {
+            int gx = cx + x * REGION_SIZE;
+            int gz = cz + y * REGION_SIZE;
+            unique_ptr<ubyte[]> data (wfile->getChunk(gx, gz));
+            if (data == nullptr)
+                continue;
+            Chunk::convert(data.get(), lut);
+            wfile->put(gx, gz, data.get());
+        }
+    }
+}
+
+void WorldConverter::write() {
+    std::cout << "writing world" << std::endl;
+    wfile->write(nullptr, content);
+}