World structure update + new blocks

src/files/WorldFiles.cpp

@@ -4,9 +4,11 @@
 #include "rle.h"
 #include "binary_io.h"
 #include "../window/Camera.h"
+#include "../content/Content.h"
 #include "../objects/Player.h"
 #include "../physics/Hitbox.h"
 #include "../voxels/voxel.h"
+#include "../voxels/Block.h"
 #include "../voxels/Chunk.h"
 #include "../typedefs.h"
 #include "../maths/voxmaths.h"
@@ -102,8 +104,12 @@ void WorldFiles::put(Chunk* chunk){
 	region.compressedSizes[chunk_index] = compressedSize;
 }
 
+path WorldFiles::getRegionsFolder() const {
+	return directory/path("regions");
+}
+
 path WorldFiles::getRegionFile(int x, int y) const {
-	return directory/path(std::to_string(x) + "_" + std::to_string(y) + ".bin");
+	return getRegionsFolder()/path(std::to_string(x) + "_" + std::to_string(y) + ".bin");
 }
 
 path WorldFiles::getPlayerFile() const {
@@ -114,6 +120,10 @@ path WorldFiles::getWorldFile() const {
 	return directory/path("world.bin");
 }
 
+path WorldFiles::getBlockIndicesFile() const {
+	return directory/path("blocks.idx");
+}
+
 ubyte* WorldFiles::getChunk(int x, int y){
 	int regionX = floordiv(x, REGION_SIZE);
 	int regionY = floordiv(y, REGION_SIZE);
@@ -190,13 +200,15 @@ ubyte* WorldFiles::readChunkData(int x, int y, uint32_t& length){
 	return data;
 }
 
-void WorldFiles::write(const WorldInfo info){
+void WorldFiles::write(const WorldInfo info, const Content* content) {
+	path directory = getRegionsFolder();
 	if (!std::filesystem::is_directory(directory)) {
 		std::filesystem::create_directories(directory);
 	}
 	writeWorldInfo(info);
 	if (generatorTestMode)
 		return;
+	writeIndices(content->indices);
 	for (auto it = regions.begin(); it != regions.end(); it++){
 		if (it->second.chunksData == nullptr || !it->second.unsaved)
 			continue;
@@ -205,6 +217,20 @@ void WorldFiles::write(const WorldInfo info){
 	}
 }
 
+void WorldFiles::writeIndices(const ContentIndices* indices) {
+	/* Blocks indices */ {
+		BinaryWriter out;
+		uint count = indices->countBlockDefs();
+		out.putInt16(count);
+		for (uint i = 0; i < count; i++) {
+			const Block* def = indices->getBlockDef(i);
+			out.putShortStr(def->name);
+		}
+		files::write_bytes(getBlockIndicesFile(), 
+						   (const char*)out.data(), out.size());
+	}
+}
+
 void WorldFiles::writeWorldInfo(const WorldInfo& info) {
 	BinaryWriter out;
 	out.putCStr(WORLD_FORMAT_MAGIC);

src/files/WorldFiles.h

@@ -23,6 +23,8 @@
 
 class Player;
 class Chunk;
+class Content;
+class ContentIndices;
 
 struct WorldRegion {
 	ubyte** chunksData;
@@ -38,9 +40,11 @@ struct WorldInfo {
 
 class WorldFiles {
 	void writeWorldInfo(const WorldInfo& info);
+	std::filesystem::path getRegionsFolder() const;
 	std::filesystem::path getRegionFile(int x, int y) const;
 	std::filesystem::path getPlayerFile() const;
 	std::filesystem::path getWorldFile() const;
+	std::filesystem::path getBlockIndicesFile() const;
 public:
 	std::unordered_map<glm::ivec2, WorldRegion> regions;
 	std::filesystem::path directory;
@@ -58,7 +62,8 @@ public:
 	ubyte* getChunk(int x, int y);
 	void writeRegion(int x, int y, WorldRegion& entry);
 	void writePlayer(Player* player);
-	void write(const WorldInfo info);
+	void write(const WorldInfo info, const Content* content);
+	void writeIndices(const ContentIndices* indices);
 };
 
 #endif /* FILES_WORLDFILES_H_ */

src/files/binary_io.cpp

@@ -27,6 +27,15 @@ void BinaryWriter::put(const string& s) {
     put((const ubyte*)s.data(), len);
 }
 
+void BinaryWriter::putShortStr(const string& s) {
+    size_t len = s.length();
+    if (len > 255) {
+        throw std::domain_error("length > 255");
+    }
+    put(len);
+    put((const ubyte*)s.data(), len);
+}
+
 void BinaryWriter::put(const ubyte* arr, size_t size) {
     buffer.reserve(buffer.size() + size);
     for (size_t i = 0; i < size; i++) {
@@ -144,6 +153,15 @@ string BinaryReader::getString() {
     return string((const char*)(data+pos-length), length);
 }
 
+string BinaryReader::getShortString() {
+    ubyte length = get();
+    if (pos+length > size) {
+        throw std::underflow_error("unexpected end");
+    }
+    pos += length;
+    return string((const char*)(data+pos-length), length);
+}
+
 bool BinaryReader::hasNext() const {
     return pos < size;
 }

src/files/binary_io.h

@@ -16,6 +16,7 @@ public:
     void putFloat32(float val);
     void put(const std::string& s);
     void put(const ubyte* arr, size_t size);
+    void putShortStr(const std::string& s);
 
     inline size_t size() const {
         return buffer.size();
@@ -39,6 +40,7 @@ public:
     int64_t getInt64();
     float getFloat32();
     std::string getString();
+    std::string getShortString();
     bool hasNext() const;
 };