gzip compress/decompress + refactor

src/coders/gzip.cpp

@@ -0,0 +1,56 @@
+#include "gzip.h"
+
+#define ZLIB_CONST
+#include <zlib.h>
+#include <math.h>
+#include <memory>
+#include "byte_utils.h"
+
+std::vector<ubyte> gzip::compress(const ubyte* src, size_t size) {
+    size_t buffer_size = 23+size*1.01;
+    std::vector<ubyte> buffer;
+    buffer.resize(buffer_size);
+
+    // zlib struct
+    z_stream defstream {};
+    defstream.zalloc = Z_NULL;
+    defstream.zfree = Z_NULL;
+    defstream.opaque = Z_NULL;
+    defstream.avail_in = size;
+    defstream.next_in = src;
+    defstream.avail_out = buffer_size;
+    defstream.next_out = buffer.data();
+
+    // compression
+    deflateInit2(&defstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 
+                 16 + MAX_WBITS, 8, Z_DEFAULT_STRATEGY);
+    deflate(&defstream, Z_FINISH);
+    deflateEnd(&defstream);
+
+    size_t compressed_size = defstream.next_out - buffer.data();
+    buffer.resize(compressed_size);
+    return buffer;
+}
+
+std::vector<ubyte> gzip::decompress(const ubyte* src, size_t size) {
+    // getting uncompressed data length from gzip footer
+    size_t decompressed_size = *(uint32_t*)(src+size-4);
+    std::vector<ubyte> buffer;
+    buffer.resize(decompressed_size);
+
+    // zlib struct
+    z_stream infstream;
+    infstream.zalloc = Z_NULL;
+    infstream.zfree = Z_NULL;
+    infstream.opaque = Z_NULL;
+    infstream.avail_in = size;
+    infstream.next_in = src;
+    infstream.avail_out = decompressed_size;
+    infstream.next_out = buffer.data();
+
+    inflateInit2(&infstream, 16+MAX_WBITS);
+    inflate(&infstream, Z_NO_FLUSH);
+    inflateEnd(&infstream);
+
+    return buffer;
+}

src/coders/gzip.h

@@ -0,0 +1,12 @@
+#ifndef CODERS_GZIP_H_
+#define CODERS_GZIP_H_
+
+#include <vector>
+#include "../typedefs.h"
+
+namespace gzip {
+    std::vector<ubyte> compress(const ubyte* src, size_t size);
+    std::vector<ubyte> decompress(const ubyte* src, size_t size);
+}
+
+#endif // CODERS_GZIP_H_

src/frontend/screens.cpp

@@ -96,9 +96,8 @@ LevelScreen::LevelScreen(Engine* engine, Level* level)
 
 LevelScreen::~LevelScreen() {
 	std::cout << "-- writing world" << std::endl;
-    World* world = level->world;
+    auto world = level->getWorld();
 	world->write(level.get());
-	delete world;
 }
 
 void LevelScreen::updateHotkeys() {

src/voxels/Chunk.cpp

@@ -15,7 +15,6 @@ Chunk::Chunk(int xpos, int zpos) : x(xpos), z(zpos){
 		voxels[i].states = 0;
 	}
 	lightmap = new Lightmap();
-	renderData.vertices = nullptr;
 }
 
 Chunk::~Chunk(){

src/voxels/Chunk.h

@@ -18,11 +18,6 @@ struct voxel;
 class Lightmap;
 class ContentLUT;
 
-struct RenderData {
-	float* vertices;
-	size_t size;
-};
-
 class Chunk {
 public:
 	int x, z;
@@ -31,7 +26,6 @@ public:
 	Lightmap* lightmap;
 	int flags = 0;
 	int surrounding = 0;
-	RenderData renderData;
 
 	Chunk(int x, int z);
 	~Chunk();
@@ -44,7 +38,7 @@ public:
 
 	// flags getters/setters below
 	
-	void SETFLAGS(int mask, bool value){
+	inline void setFlags(int mask, bool value){
 		if (value)
 			flags |= mask; 
 		else
@@ -63,17 +57,17 @@ public:
 
 	inline bool isReady() const {return flags & ChunkFlag::READY;}
 
-	inline void setUnsaved(bool newState) {SETFLAGS(ChunkFlag::UNSAVED, newState);}
+	inline void setUnsaved(bool newState) {setFlags(ChunkFlag::UNSAVED, newState);}
 
-	inline void setModified(bool newState) {SETFLAGS(ChunkFlag::MODIFIED, newState);}
+	inline void setModified(bool newState) {setFlags(ChunkFlag::MODIFIED, newState);}
 
-	inline void setLoaded(bool newState) {SETFLAGS(ChunkFlag::LOADED, newState);}
+	inline void setLoaded(bool newState) {setFlags(ChunkFlag::LOADED, newState);}
 
-	inline void setLoadedLights(bool newState) {SETFLAGS(ChunkFlag::LOADED_LIGHTS, newState);}
+	inline void setLoadedLights(bool newState) {setFlags(ChunkFlag::LOADED_LIGHTS, newState);}
 
-	inline void setLighted(bool newState) {SETFLAGS(ChunkFlag::LIGHTED, newState);}
+	inline void setLighted(bool newState) {setFlags(ChunkFlag::LIGHTED, newState);}
 
-	inline void setReady(bool newState) {SETFLAGS(ChunkFlag::READY, newState);}
+	inline void setReady(bool newState) {setFlags(ChunkFlag::READY, newState);}
 
 	ubyte* encode() const;
 	bool decode(ubyte* data);

src/voxels/Chunks.cpp

@@ -16,10 +16,6 @@
 #include <math.h>
 #include <limits.h>
 
-using glm::vec3;
-using glm::ivec3;
-using std::shared_ptr;
-
 Chunks::Chunks(int w, int d, 
 			   int ox, int oz, 
 			   WorldFiles* wfile, 
@@ -27,25 +23,16 @@ Chunks::Chunks(int w, int d,
 			   const Content* content) 
 		: content(content),
 		  contentIds(content->indices), 
+          chunks(w*d),
+          chunksSecond(w*d),
 		  w(w), d(d), ox(ox), oz(oz), 
 		  worldFiles(wfile), 
 		  events(events) {
 	volume = (size_t)w*(size_t)d;
-	chunks = new shared_ptr<Chunk>[volume];
-	chunksSecond = new shared_ptr<Chunk>[volume];
-
-	for (size_t i = 0; i < volume; i++){
-		chunks[i] = nullptr;
-	}
 	chunksCount = 0;
 }
 
 Chunks::~Chunks(){
-	for (size_t i = 0; i < volume; i++){
-		chunks[i] = nullptr;
-	}
-	delete[] chunks;
-	delete[] chunksSecond;
 }
 
 voxel* Chunks::get(int x, int y, int z){
@@ -56,7 +43,7 @@ voxel* Chunks::get(int x, int y, int z){
 	int cz = floordiv(z, CHUNK_D);
 	if (cx < 0 || cy < 0 || cz < 0 || cx >= w || cy >= 1 || cz >= d)
 		return nullptr;
-	shared_ptr<Chunk> chunk = chunks[cz * w + cx]; // chunks is 2D-array
+	std::shared_ptr<Chunk> chunk = chunks[cz * w + cx];
 	if (chunk == nullptr)
 		return nullptr;
 	int lx = x - cx * CHUNK_W;
@@ -117,7 +104,7 @@ ubyte Chunks::getLight(int x, int y, int z, int channel){
 	int cz = floordiv(z, CHUNK_D);
 	if (cx < 0 || cy < 0 || cz < 0 || cx >= w || cy >= 1 || cz >= d)
 		return 0;
-	shared_ptr<Chunk> chunk = chunks[(cy * d + cz) * w + cx];
+	auto chunk = chunks[(cy * d + cz) * w + cx];
 	if (chunk == nullptr)
 		return 0;
 	int lx = x - cx * CHUNK_W;
@@ -134,7 +121,7 @@ light_t Chunks::getLight(int x, int y, int z){
 	int cz = floordiv(z, CHUNK_D);
 	if (cx < 0 || cy < 0 || cz < 0 || cx >= w || cy >= 1 || cz >= d)
 		return 0;
-	shared_ptr<Chunk> chunk = chunks[(cy * d + cz) * w + cx];
+	auto chunk = chunks[(cy * d + cz) * w + cx];
 	if (chunk == nullptr)
 		return 0;
 	int lx = x - cx * CHUNK_W;
@@ -197,12 +184,12 @@ void Chunks::set(int x, int y, int z, int id, uint8_t states){
 		chunk->setModified(true);
 }
 
-voxel* Chunks::rayCast(vec3 start, 
-					   vec3 dir, 
+voxel* Chunks::rayCast(glm::vec3 start, 
+					   glm::vec3 dir, 
 					   float maxDist, 
-					   vec3& end, 
-					   ivec3& norm, 
-					   ivec3& iend) {
+					   glm::vec3& end, 
+					   glm::ivec3& norm, 
+					   glm::ivec3& iend) {
 	float px = start.x;
 	float py = start.y;
 	float pz = start.z;
@@ -256,7 +243,7 @@ voxel* Chunks::rayCast(vec3 start,
 				scalar_t distance;
 				Ray ray(start, dir);
 				if (ray.intersectAABB(iend, box, maxDist, norm, distance) > RayRelation::None){
-					end = start + (dir * vec3(distance));
+					end = start + (dir * glm::vec3(distance));
 					return voxel;
 				}
 
@@ -309,7 +296,7 @@ voxel* Chunks::rayCast(vec3 start,
 	return nullptr;
 }
 
-vec3 Chunks::rayCastToObstacle(vec3 start, vec3 dir, float maxDist) {
+glm::vec3 Chunks::rayCastToObstacle(glm::vec3 start, glm::vec3 dir, float maxDist) {
 	float px = start.x;
 	float py = start.y;
 	float pz = start.z;
@@ -343,7 +330,7 @@ vec3 Chunks::rayCastToObstacle(vec3 start, vec3 dir, float maxDist) {
 
 	while (t <= maxDist) {
 		voxel* voxel = get(ix, iy, iz);
-		if (voxel == nullptr) { return vec3(px + t * dx, py + t * dy, pz + t * dz); }
+		if (voxel == nullptr) { return glm::vec3(px + t * dx, py + t * dy, pz + t * dz); }
 
 		const Block* def = contentIds->getBlockDef(voxel->id);
 		if (def->obstacle) {
@@ -352,15 +339,15 @@ vec3 Chunks::rayCastToObstacle(vec3 start, vec3 dir, float maxDist) {
 					? def->rt.hitboxes[voxel->rotation()]
 					: def->hitbox;
 				scalar_t distance;
-				ivec3 norm;
+				glm::ivec3 norm;
 				Ray ray(start, dir);
 				// norm is dummy now, can be inefficient
-				if (ray.intersectAABB(ivec3(ix, iy, iz), box, maxDist, norm, distance) > RayRelation::None) {
-					return start + (dir * vec3(distance));
+				if (ray.intersectAABB(glm::ivec3(ix, iy, iz), box, maxDist, norm, distance) > RayRelation::None) {
+					return start + (dir * glm::vec3(distance));
 				}
 			}
 			else {
-				return vec3(px + t * dx, py + t * dy, pz + t * dz);
+				return glm::vec3(px + t * dx, py + t * dy, pz + t * dz);
 			}
 		}
 		if (txMax < tyMax) {
@@ -388,7 +375,7 @@ vec3 Chunks::rayCastToObstacle(vec3 start, vec3 dir, float maxDist) {
 			}
 		}
 	}
-	return vec3(px + maxDist * dx, py + maxDist * dy, pz + maxDist * dz);
+	return glm::vec3(px + maxDist * dx, py + maxDist * dy, pz + maxDist * dz);
 }
 
 
@@ -408,7 +395,7 @@ void Chunks::translate(int dx, int dz){
 	}
 	for (int z = 0; z < d; z++){
 		for (int x = 0; x < w; x++){
-			shared_ptr<Chunk> chunk = chunks[z * w + x];
+			auto chunk = chunks[z * w + x];
 			int nx = x - dx;
 			int nz = z - dz;
 			if (chunk == nullptr)
@@ -443,20 +430,18 @@ void Chunks::resize(int newW, int newD) {
 		translate(0, delta);
 	}
 	const int newVolume = newW * newD;
-	auto newChunks = new shared_ptr<Chunk>[newVolume] {};
-	auto newChunksSecond = new shared_ptr<Chunk>[newVolume] {};
+    std::vector<std::shared_ptr<Chunk>> newChunks(newVolume);
+    std::vector<std::shared_ptr<Chunk>> newChunksSecond(newVolume);
 	for (int z = 0; z < d && z < newD; z++) {
 		for (int x = 0; x < w && x < newW; x++) {
 			newChunks[z * newW + x] = chunks[z * w + x];
 		}
 	}
-	delete[] chunks;
-	delete[] chunksSecond;
-	w = newW;
-	d = newD;
-	volume = newVolume;
-	chunks = newChunks;
-	chunksSecond = newChunksSecond;
+    w = newW;
+    d = newD;
+    volume = newVolume;
+    chunks = std::move(newChunks);
+    chunksSecond = std::move(newChunksSecond);
 }
 
 void Chunks::_setOffset(int x, int z){
@@ -464,7 +449,7 @@ void Chunks::_setOffset(int x, int z){
 	oz = z;
 }
 
-bool Chunks::putChunk(shared_ptr<Chunk> chunk) {
+bool Chunks::putChunk(std::shared_ptr<Chunk> chunk) {
 	int x = chunk->x;
 	int z = chunk->z;
 	x -= ox;

src/voxels/Chunks.h

@@ -21,8 +21,8 @@ class Chunks {
 	const Content* const content;
 	const ContentIndices* const contentIds;
 public:
-	std::shared_ptr<Chunk>* chunks;
-	std::shared_ptr<Chunk>* chunksSecond;
+	std::vector<std::shared_ptr<Chunk>> chunks;
+	std::vector<std::shared_ptr<Chunk>> chunksSecond;
 	size_t volume;
 	size_t chunksCount;
 	size_t visible;

src/voxels/ChunksStorage.cpp

@@ -39,7 +39,7 @@ void ChunksStorage::remove(int x, int z) {
 	}
 }
 
-void verifyLoadedChunk(ContentIndices* indices, Chunk* chunk) {
+static void verifyLoadedChunk(ContentIndices* indices, Chunk* chunk) {
     for (size_t i = 0; i < CHUNK_VOL; i++) {
         blockid_t id = chunk->voxels[i].id;
         if (indices->getBlockDef(id) == nullptr) {
@@ -52,18 +52,19 @@ void verifyLoadedChunk(ContentIndices* indices, Chunk* chunk) {
 }
 
 std::shared_ptr<Chunk> ChunksStorage::create(int x, int z) {
-	World* world = level->world;
+	World* world = level->getWorld();
+    WorldFiles* wfile = world->wfile;
 
     auto chunk = std::make_shared<Chunk>(x, z);
 	store(chunk);
-	std::unique_ptr<ubyte[]> data(world->wfile->getChunk(chunk->x, chunk->z));
+	std::unique_ptr<ubyte[]> data(wfile->getChunk(chunk->x, chunk->z));
 	if (data) {
 		chunk->decode(data.get());
 		chunk->setLoaded(true);
         verifyLoadedChunk(level->content->indices, chunk.get());
 	}
 
-	light_t* lights = world->wfile->getLights(chunk->x, chunk->z);
+	light_t* lights = wfile->getLights(chunk->x, chunk->z);
 	if (lights) {
 		chunk->lightmap->set(lights);
 		chunk->setLoadedLights(true);

src/world/Level.cpp

@@ -49,3 +49,7 @@ void Level::update() {
 		chunks->resize(matrixSize, matrixSize);
 	}
 }
+
+World* Level::getWorld() {
+    return world.get();
+}

src/world/Level.h

@@ -1,6 +1,8 @@
 #ifndef WORLD_LEVEL_H_
 #define WORLD_LEVEL_H_
 
+#include <memory>
+
 #include "../typedefs.h"
 #include "../settings.h"
 
@@ -15,7 +17,7 @@ class ChunksStorage;
 
 class Level {
 public:
-	World* world;
+	std::unique_ptr<World> world;
 	const Content* const content;
 	Player* player;
 	Chunks* chunks;
@@ -34,6 +36,8 @@ public:
 	~Level();
 
 	void update();
+    
+    World* getWorld();
 };
 
 #endif /* WORLD_LEVEL_H_ */