Worlds indexing

src/files/WorldFiles.cpp

@@ -122,7 +122,7 @@ WorldRegion* WorldFiles::getOrCreateRegion(
 	return region;
 }
 
-ubyte* WorldFiles::compress(ubyte* src, size_t srclen, size_t& len) {
+ubyte* WorldFiles::compress(const ubyte* src, size_t srclen, size_t& len) {
 	len = extrle::encode(src, srclen, compressionBuffer);
 	ubyte* data = new ubyte[len];
 	for (size_t i = 0; i < len; i++) {
@@ -131,12 +131,27 @@ ubyte* WorldFiles::compress(ubyte* src, size_t srclen, size_t& len) {
 	return data;
 }
 
-ubyte* WorldFiles::decompress(ubyte* src, size_t srclen, size_t dstlen) {
+ubyte* WorldFiles::decompress(const ubyte* src, size_t srclen, size_t dstlen) {
 	ubyte* decompressed = new ubyte[dstlen];
 	extrle::decode(src, srclen, decompressed);
 	return decompressed;
 }
 
+void WorldFiles::put(int x, int z, const ubyte* voxelData) {
+    int regionX = floordiv(x, REGION_SIZE);
+	int regionZ = floordiv(z, REGION_SIZE);
+	int localX = x - (regionX * REGION_SIZE);
+	int localZ = z - (regionZ * REGION_SIZE);
+
+	/* Writing Voxels */ {
+		WorldRegion* region = getOrCreateRegion(regions, regionX, regionZ);
+		region->setUnsaved(true);
+		size_t compressedSize;
+		ubyte* data = compress(voxelData, CHUNK_DATA_LEN, compressedSize);
+		region->put(localX, localZ, data, compressedSize);
+	}
+}
+
 void WorldFiles::put(Chunk* chunk){
 	assert(chunk != nullptr);
 
@@ -176,6 +191,21 @@ path WorldFiles::getRegionFilename(int x, int y) const {
 	return path(filename);
 }
 
+bool WorldFiles::parseRegionFilename(const string& name, int& x, int& y) {
+    size_t sep = name.find('_');
+    if (sep == string::npos || sep == 0 || sep == name.length()-1)
+        return false;
+    try {
+        x = std::stoi(name.substr(0, sep));
+        y = std::stoi(name.substr(sep+1));
+    } catch (std::invalid_argument& err) {
+        return false;
+    } catch (std::out_of_range& err) {
+        return false;
+    }
+    return true;
+}
+
 path WorldFiles::getPlayerFile() const {
 	return directory/path("player.json");
 }
@@ -338,7 +368,8 @@ void WorldFiles::write(const World* world, const Content* content) {
 			fs::create_directories(directory);
 		}
 	}
-	writeWorldInfo(world);
+    if (world)
+	    writeWorldInfo(world);
 	if (generatorTestMode)
 		return;
 	writeIndices(content->indices);