BIG REFACTOR

include/game/World.h

@@ -12,23 +12,30 @@
 
 namespace td {
 namespace game {
-typedef std::pair<std::int16_t, std::int16_t> ChunkCoord;
+
+struct ChunkCoord {
+    std::int16_t x, y;
+
+    friend bool operator==(const td::game::ChunkCoord& first, const td::game::ChunkCoord& other) {
+        return first.x == other.x && first.y == other.y;
+    }
+};
+
+
 }
 }
+
+
 namespace std {
 template <>
 struct hash<td::game::ChunkCoord> {
     std::size_t operator()(const td::game::ChunkCoord& key) const {
-        // Compute individual hash values for first,
+        return std::hash<std::int16_t>()(key.x) ^ std::hash<std::int16_t>()(key.y);
-        // second and third and combine them using XOR
-        // and bit shifting:
-        return ((std::hash<std::int16_t>()(key.first) ^ (std::hash<std::int16_t>()(key.second) << 1)) >> 1);
     }
 };
 }
 
 namespace td {
-
 namespace protocol {
 
 class WorldBeginDataPacket;
@@ -91,12 +98,13 @@ typedef std::vector<std::uint16_t> ChunkPalette;
 
 typedef std::shared_ptr<WalkableTile> WalkableTilePtr;
 
-typedef std::array<std::uint16_t, 32 * 32> ChunkData;
 typedef std::uint32_t TileIndex;
 
 //32 x 32 area
 struct Chunk {
     enum { ChunkWidth = 32, ChunkHeight = 32, ChunkSize = ChunkWidth * ChunkHeight };
+    typedef std::array<std::uint16_t, ChunkSize> ChunkData;
+
     // stores index of tile palette
     ChunkData tiles{ 0 };
     ChunkPalette palette;

include/misc/Compression.h

@@ -6,6 +6,9 @@
 namespace td {
 namespace utils {
 
+std::uint64_t inflate(const std::string& source, std::string& dest);
+std::uint64_t deflate(const std::string& source, std::string& dest);
+
 DataBuffer Compress(const DataBuffer& buffer);
 DataBuffer Decompress(DataBuffer& buffer);
 DataBuffer Decompress(DataBuffer& buffer, std::uint64_t packetLength);

include/misc/DataBuffer.h

@@ -1,5 +1,4 @@
-#ifndef MCLIB_COMMON_DATA_BUFFER_H_
+#pragma once
-#define MCLIB_COMMON_DATA_BUFFER_H_
 
 #include <vector>
 #include <algorithm>
@@ -13,7 +12,7 @@ class DataBuffer {
 private:
     typedef std::vector<std::uint8_t> Data;
     Data m_Buffer;
-    std::size_t m_ReadOffset = 0;
+    std::size_t m_ReadOffset;
 
 public:
     typedef Data::iterator iterator;
@@ -23,7 +22,7 @@ public:
 
     DataBuffer();
     DataBuffer(const DataBuffer& other);
-    DataBuffer(const DataBuffer& other, std::size_t offset);
+    DataBuffer(const DataBuffer& other, Data::difference_type offset);
     DataBuffer(DataBuffer&& other);
     DataBuffer(const std::string& str);
 
@@ -64,7 +63,7 @@ public:
     template <typename T>
     DataBuffer& operator>>(T& data) {
         assert(m_ReadOffset + sizeof(T) <= GetSize());
-        data = *(T*)&m_Buffer[m_ReadOffset];
+        data = *(reinterpret_cast<T*>(&m_Buffer[m_ReadOffset]));
         //std::reverse((std::uint8_t*)&data, (std::uint8_t*)&data + sizeof(T));
         m_ReadOffset += sizeof(T);
         return *this;
@@ -72,42 +71,43 @@ public:
 
     DataBuffer& operator>>(DataBuffer& data) {
         data.Resize(GetSize() - m_ReadOffset);
-        std::copy(m_Buffer.begin() + m_ReadOffset, m_Buffer.end(), data.begin());
+        std::copy(m_Buffer.begin() + static_cast<Data::difference_type>(m_ReadOffset), m_Buffer.end(), data.begin());
         m_ReadOffset = m_Buffer.size();
         return *this;
     }
 
     DataBuffer& operator>>(std::string& str) {
-        std::size_t stringSize = strlen((const char*)m_Buffer.data() + m_ReadOffset) + 1; // including null character
+        std::size_t stringSize = strlen(reinterpret_cast<const char*>(m_Buffer.data()) + m_ReadOffset) + 1; // including null character
         str.resize(stringSize);
-        std::copy(m_Buffer.begin() + m_ReadOffset, m_Buffer.begin() + m_ReadOffset + stringSize, str.begin());
+        std::copy(m_Buffer.begin() + static_cast<Data::difference_type>(m_ReadOffset),
+            m_Buffer.begin() + static_cast<Data::difference_type>(m_ReadOffset + stringSize), str.begin());
         m_ReadOffset += stringSize;
         return *this;
     }
 
     void ReadSome(char* buffer, std::size_t amount) {
         assert(m_ReadOffset + amount <= GetSize());
-        std::copy_n(m_Buffer.begin() + m_ReadOffset, amount, buffer);
+        std::copy_n(m_Buffer.begin() + static_cast<Data::difference_type>(m_ReadOffset), amount, buffer);
         m_ReadOffset += amount;
     }
 
     void ReadSome(std::uint8_t* buffer, std::size_t amount) {
         assert(m_ReadOffset + amount <= GetSize());
-        std::copy_n(m_Buffer.begin() + m_ReadOffset, amount, buffer);
+        std::copy_n(m_Buffer.begin() + static_cast<Data::difference_type>(m_ReadOffset), amount, buffer);
         m_ReadOffset += amount;
     }
 
     void ReadSome(DataBuffer& buffer, std::size_t amount) {
         assert(m_ReadOffset + amount <= GetSize());
         buffer.Resize(amount);
-        std::copy_n(m_Buffer.begin() + m_ReadOffset, amount, buffer.begin());
+        std::copy_n(m_Buffer.begin() + static_cast<Data::difference_type>(m_ReadOffset), amount, buffer.begin());
         m_ReadOffset += amount;
     }
 
     void ReadSome(std::string& buffer, std::size_t amount) {
         assert(m_ReadOffset + amount <= GetSize());
         buffer.resize(amount);
-        std::copy_n(m_Buffer.begin() + m_ReadOffset, amount, buffer.begin());
+        std::copy_n(m_Buffer.begin() + static_cast<Data::difference_type>(m_ReadOffset), amount, buffer.begin());
         m_ReadOffset += amount;
     }
 
@@ -163,5 +163,3 @@ public:
 std::ostream& operator<<(std::ostream& os, const DataBuffer& buffer);
 
 } // ns td
-
-#endif

include/network/TCPSocket.h

@@ -15,7 +15,7 @@ class TCPSocket : public Socket {
 private:
     IPAddress m_RemoteIP;
     uint16_t m_Port;
-    sockaddr_in m_RemoteAddr;
+    sockaddr m_RemoteAddr;
 
 public:
     TCPSocket();

include/network/UDPSocket.h

@@ -20,7 +20,9 @@ public:
 
     bool Connect(const IPAddress& address, std::uint16_t port);
     std::size_t Send(const std::uint8_t* data, std::size_t size);
-    DataBuffer Receive(std::size_t amount);
+
+    virtual DataBuffer Receive(std::size_t amount);
+    virtual std::size_t Receive(DataBuffer& buffer, std::size_t amount);
 };
 
 } // ns network

src/misc/Compression.cpp

@@ -8,18 +8,17 @@
 namespace td {
 namespace utils {
 
-unsigned long inflate(const std::string& source, std::string& dest) {
+std::uint64_t inflate(const std::string& source, std::string& dest) {
-    unsigned long size = dest.size();
+    std::size_t size;
-    uncompress((Bytef*)&dest[0], &size, (const Bytef*)source.c_str(), source.length());
+    uncompress(reinterpret_cast<Bytef*>(dest.data()), &size, reinterpret_cast<const Bytef*>(source.c_str()), source.length());
     return size;
 }
 
-unsigned long deflate(const std::string& source, std::string& dest) {
+std::uint64_t deflate(const std::string& source, std::string& dest) {
-    unsigned long size = source.length();
+    std::size_t size;
-    dest.resize(size);
+    dest.resize(source.size());  // Resize for the compressed data to fit into
-
+    compress(reinterpret_cast<Bytef*>(dest.data()), &size, reinterpret_cast<const Bytef*>(source.c_str()), source.length());
-    compress((Bytef*)&dest[0], &size, (const Bytef*)source.c_str(), source.length());
+    dest.resize(size);  // Resize to cut useless data
-    dest.resize(size);
     return size;
 }
 

src/misc/DataBuffer.cpp

@@ -7,12 +7,13 @@
 
 namespace td {
 
-DataBuffer::DataBuffer() { }
+DataBuffer::DataBuffer() : m_ReadOffset(0) { }
 DataBuffer::DataBuffer(const DataBuffer& other) : m_Buffer(other.m_Buffer), m_ReadOffset(other.m_ReadOffset) { }
 DataBuffer::DataBuffer(DataBuffer&& other) : m_Buffer(std::move(other.m_Buffer)), m_ReadOffset(std::move(other.m_ReadOffset)) { }
-DataBuffer::DataBuffer(const std::string& str) : m_Buffer(str.begin(), str.end()) { }
+DataBuffer::DataBuffer(const std::string& str) : m_Buffer(str.begin(), str.end()), m_ReadOffset(0) { }
-DataBuffer::DataBuffer(const DataBuffer& other, std::size_t offset) {
+
-    m_Buffer.reserve(other.GetSize() - offset);
+DataBuffer::DataBuffer(const DataBuffer& other, Data::difference_type offset) : m_ReadOffset(0) {
+    m_Buffer.reserve(other.GetSize() - static_cast<std::size_t>(offset));
     std::copy(other.m_Buffer.begin() + offset, other.m_Buffer.end(), std::back_inserter(m_Buffer));
 }
 
@@ -58,7 +59,7 @@ DataBuffer::const_iterator DataBuffer::end() const {
 
 std::ostream& operator<<(std::ostream& os, const DataBuffer& buffer) {
     for (unsigned char u : buffer)
-        os << std::hex << std::setfill('0') << std::setw(2) << (int)u << " ";
+        os << std::hex << std::setfill('0') << std::setw(2) << static_cast<int>(u) << " ";
     os << std::dec;
     return os;
 }
@@ -81,7 +82,7 @@ bool DataBuffer::ReadFile(const std::string& fileName) {
 bool DataBuffer::WriteFile(const std::string& fileName) {
     try {
         std::ofstream file(fileName, std::ostream::binary);
-        file.write((const char*)m_Buffer.data(), m_Buffer.size());
+        file.write(reinterpret_cast<const char*>(m_Buffer.data()), static_cast<std::streamsize>(m_Buffer.size()));
         file.flush();
     } catch (std::exception& e) {
         std::cerr << "Failed to write file \"" << fileName << "\" reason : " << e.what() << std::endl;

src/network/Network.cpp

@@ -33,7 +33,8 @@ NetworkInitializer initializer;
 
 IPAddresses Dns::Resolve(const std::string& host) {
     IPAddresses list;
-    addrinfo hints = { 0 }, * addresses;
+    addrinfo hints{};
+    addrinfo* addresses = nullptr;
 
     //hints.ai_family = AF_UNSPEC;
     hints.ai_family = AF_INET;
@@ -54,7 +55,7 @@ IPAddresses Dns::Resolve(const std::string& host) {
 #else
         char straddr[512];
 
-        inet_ntop(p->ai_family, &((sockaddr_in*)p->ai_addr)->sin_addr, straddr, sizeof(straddr));
+        inet_ntop(p->ai_family, &(reinterpret_cast<sockaddr_in*>(p->ai_addr))->sin_addr, straddr, sizeof(straddr));
 #endif
 
         list.push_back(IPAddress(straddr));

src/network/Socket.cpp

@@ -16,7 +16,7 @@ Socket::Socket(Type type)
     : m_Blocking(false),
     m_Type(type),
     m_Status(Disconnected),
-    m_Handle((SocketHandle)INVALID_SOCKET)
+    m_Handle(static_cast<SocketHandle>(INVALID_SOCKET))
 {
 
 }

src/network/TCPSocket.cpp

@@ -13,10 +13,8 @@
 namespace td {
 namespace network {
 
-TCPSocket::TCPSocket()
+TCPSocket::TCPSocket() : Socket(Socket::TCP), m_Port(0) {
-    : Socket(Socket::TCP), m_Port(0)
+    m_Handle = static_cast<SocketHandle>(INVALID_SOCKET);
-{
-    m_Handle = (SocketHandle)INVALID_SOCKET;
 }
 
 bool TCPSocket::Connect(const IPAddress& address, unsigned short port) {
@@ -32,7 +30,7 @@ bool TCPSocket::Connect(const IPAddress& address, unsigned short port) {
     hints.ai_socktype = SOCK_STREAM;
     hints.ai_protocol = IPPROTO_TCP;
 
-    if (::getaddrinfo(address.ToString().c_str(), std::to_string(port).c_str(), &hints, &result) != 0) {
+    if (::getaddrinfo(address.ToString().c_str(), std::to_string(static_cast<int>(port)).c_str(), &hints, &result) != 0) {
         std::cerr << "Failed to get address info !\n";
         return false;
     }
@@ -44,8 +42,8 @@ bool TCPSocket::Connect(const IPAddress& address, unsigned short port) {
 
     struct addrinfo* ptr = nullptr;
     for (ptr = result; ptr != nullptr; ptr = ptr->ai_next) {
-        struct sockaddr_in* sockaddr = (struct sockaddr_in*)ptr->ai_addr;
+        struct sockaddr* sockaddr = ptr->ai_addr;
-        if (::connect(m_Handle, (struct sockaddr*)sockaddr, sizeof(struct sockaddr_in)) != 0) {
+        if (::connect(m_Handle, sockaddr, sizeof(sockaddr_in)) != 0) {
             std::cerr << "Failed to connect with this address !\n";
             continue;
         }
@@ -78,7 +76,7 @@ size_t TCPSocket::Send(const unsigned char* data, size_t size) {
             Disconnect();
             return 0;
         }
-        sent += cur;
+        sent += static_cast<std::size_t>(cur);
     }
 
     return sent;
@@ -88,7 +86,7 @@ std::size_t TCPSocket::Receive(DataBuffer& buffer, std::size_t amount) {
     buffer.Resize(amount);
     buffer.SetReadOffset(0);
 
-    int recvAmount = ::recv(m_Handle, (char*)&buffer[0], amount, 0);
+    int recvAmount = ::recv(m_Handle, reinterpret_cast<char*>(buffer.data()), amount, 0);
     if (recvAmount <= 0) {
 #if defined(_WIN32) || defined(WIN32)
         int err = WSAGetLastError();
@@ -104,8 +102,8 @@ std::size_t TCPSocket::Receive(DataBuffer& buffer, std::size_t amount) {
         buffer.Clear();
         return 0;
     }
-    buffer.Resize(recvAmount);
+    buffer.Resize(static_cast<std::size_t>(recvAmount));
-    return recvAmount;
+    return static_cast<std::size_t>(recvAmount);
 }
 
 DataBuffer TCPSocket::Receive(std::size_t amount) {
@@ -126,7 +124,7 @@ DataBuffer TCPSocket::Receive(std::size_t amount) {
         return DataBuffer();
     }
 
-    return DataBuffer(std::string(buf.get(), received));
+    return DataBuffer(std::string(buf.get(), static_cast<std::size_t>(received)));
 }
 
 TCPSocket::TCPSocket(TCPSocket&& other) : Socket(TCP) {
@@ -136,12 +134,12 @@ TCPSocket::TCPSocket(TCPSocket&& other) : Socket(TCP) {
     m_RemoteIP = other.m_RemoteIP;
     SetStatus(other.GetStatus());
     SetBlocking(other.IsBlocking());
-    other.m_Handle = (SocketHandle)INVALID_SOCKET;
+    other.m_Handle = static_cast<SocketHandle>(INVALID_SOCKET);
 }
 
 void SendPacket(const DataBuffer& data, network::TCPSocket& socket) {
     DataBuffer compressed = utils::Compress(data);
-    socket.Send((const std::uint8_t*)compressed.ToString().data(), compressed.GetSize());
+    socket.Send(reinterpret_cast<const std::uint8_t*>(compressed.ToString().data()), compressed.GetSize());
 }
 
 

src/network/UDPSocket.cpp

@@ -14,7 +14,7 @@ namespace network {
 UDPSocket::UDPSocket()
     : Socket(Socket::UDP), m_Port(0)
 {
-    m_Handle = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+    m_Handle = ::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 }
 
 bool UDPSocket::Connect(const IPAddress& address, unsigned short port) {
@@ -31,20 +31,20 @@ bool UDPSocket::Connect(const IPAddress& address, unsigned short port) {
     return true;
 }
 
-size_t UDPSocket::Send(const unsigned char* data, size_t size) {
+std::size_t UDPSocket::Send(const unsigned char* data, std::size_t size) {
-    size_t sent = 0;
+    std::size_t sent = 0;
 
     if (this->GetStatus() != Connected)
         return 0;
 
     while (sent < size) {
-        int cur = sendto(m_Handle, reinterpret_cast<const char*>(data + sent), size - sent, 0,
+        int cur = ::sendto(m_Handle, reinterpret_cast<const char*>(data + sent), size - sent, 0,
             reinterpret_cast<sockaddr*>(&m_RemoteAddr), sizeof(sockaddr_in));
         if (cur <= 0) {
             Disconnect();
             return 0;
         }
-        sent += cur;
+        sent += static_cast<std::size_t>(cur);
     }
 
     return sent;
@@ -54,7 +54,7 @@ DataBuffer UDPSocket::Receive(std::size_t amount) {
     std::unique_ptr<char[]> buf(new char[amount]);
     socklen_t slen = sizeof(sockaddr_in);
 
-    int received = recvfrom(m_Handle, buf.get(), amount, 0,
+    int received = ::recvfrom(m_Handle, buf.get(), amount, 0,
         reinterpret_cast<sockaddr*>(&m_RemoteAddr), &slen);
 
     if (received <= 0) {
@@ -64,13 +64,40 @@ DataBuffer UDPSocket::Receive(std::size_t amount) {
         int err = errno;
 #endif
         if (err == WOULDBLOCK)
-            return DataBuffer(std::string(buf.get(), received));
+            return DataBuffer(std::string(buf.get(), static_cast<std::size_t>(received)));
 
         Disconnect();
         return DataBuffer();
     }
 
-    return DataBuffer(std::string(buf.get(), received));
+    return DataBuffer(std::string(buf.get(), static_cast<std::size_t>(received)));
+}
+
+std::size_t UDPSocket::Receive(DataBuffer& buffer, std::size_t amount) {
+    buffer.Resize(amount);
+    buffer.SetReadOffset(0);
+
+    socklen_t slen = sizeof(sockaddr_in);
+
+    int recvAmount = ::recvfrom(m_Handle, reinterpret_cast<char*>(buffer.data()), amount, 0,
+        reinterpret_cast<sockaddr*>(&m_RemoteAddr), &slen);
+    if (recvAmount <= 0) {
+#if defined(_WIN32) || defined(WIN32)
+        int err = WSAGetLastError();
+#else
+        int err = errno;
+#endif
+        if (err == WOULDBLOCK) {
+            buffer.Clear();
+            return 0;
+        }
+
+        Disconnect();
+        buffer.Clear();
+        return 0;
+    }
+    buffer.Resize(static_cast<std::size_t>(recvAmount));
+    return static_cast<std::size_t>(recvAmount);
 }
 
 } // ns network

src/protocol/Protocol.cpp

@@ -192,7 +192,7 @@ DataBuffer WorldDataPacket::SerializeCustom() const {
         game::ChunkCoord coords = pair.first;
         game::ChunkPtr chunk = pair.second;
 
-        data << coords.first << coords.second << (std::uint64_t)chunk->palette.size();
+        data << coords.x << coords.y << (std::uint64_t)chunk->palette.size();
 
         std::size_t bufferSize = data.GetSize();
         data.Resize(data.GetSize() + chunk->palette.size() * sizeof(game::ChunkPalette::value_type));
@@ -200,7 +200,7 @@ DataBuffer WorldDataPacket::SerializeCustom() const {
 
         std::uint8_t bitsPerTile = countBits(chunk->palette.size());
 
-        game::ChunkData::value_type individualValueMask = ((1 << bitsPerTile) - 1);
+        game::Chunk::ChunkData::value_type individualValueMask = ((1 << bitsPerTile) - 1);
 
         ChunkPackedData chunkData(game::Chunk::ChunkSize / (BITS_IN_BYTE * sizeof(ChunkPackedData::value_type) / bitsPerTile), 0);
 
@@ -235,7 +235,7 @@ DataBuffer WorldDataPacket::Serialize() const {
         game::ChunkCoord coords = pair.first;
         game::ChunkPtr chunk = pair.second;
 
-        data << coords.first << coords.second << (std::uint64_t)chunk->palette.size();
+        data << coords.x << coords.y << (std::uint64_t)chunk->palette.size();
 
         std::size_t bufferSize = data.GetSize();
         data.Resize(data.GetSize() + chunk->palette.size() * sizeof(game::ChunkPalette::value_type));
@@ -243,7 +243,7 @@ DataBuffer WorldDataPacket::Serialize() const {
 
         std::uint8_t bitsPerTile = countBits(chunk->palette.size());
 
-        game::ChunkData::value_type individualValueMask = ((1 << bitsPerTile) - 1);
+        game::Chunk::ChunkData::value_type individualValueMask = ((1 << bitsPerTile) - 1);
 
         ChunkPackedData chunkData(game::Chunk::ChunkSize / (BITS_IN_BYTE * sizeof(ChunkPackedData::value_type) / bitsPerTile), 0);
 
@@ -278,7 +278,7 @@ void WorldDataPacket::Deserialize(DataBuffer& data) {
     for (std::uint64_t chunkNumber = 0; chunkNumber < chunkCount; chunkNumber++) {
         game::ChunkPtr chunk = std::make_shared<game::Chunk>();
 
-        game::ChunkCoord::first_type chunkX, chunkY;
+        decltype(game::ChunkCoord::x) chunkX, chunkY;
         data >> chunkX >> chunkY;
 
         std::uint64_t chunkPaletteSize;
@@ -294,7 +294,7 @@ void WorldDataPacket::Deserialize(DataBuffer& data) {
         std::uint8_t bitsPerTile = countBits(chunkPaletteSize);
 
         // A bitmask that contains bitsPerTile set bits
-        game::ChunkData::value_type individualValueMask = ((1 << bitsPerTile) - 1);
+        game::Chunk::ChunkData::value_type individualValueMask = ((1 << bitsPerTile) - 1);
 
         ChunkPackedData chunkData(game::Chunk::ChunkSize / (BITS_IN_BYTE * sizeof(ChunkPackedData::value_type) / bitsPerTile), 0);
 
@@ -306,7 +306,7 @@ void WorldDataPacket::Deserialize(DataBuffer& data) {
             int startOffset = (tileNumber * bitsPerTile) % BITS_IN_LONG;
             int endLong = ((tileNumber + 1) * bitsPerTile - 1) / BITS_IN_LONG;
 
-            game::ChunkData::value_type value;
+            game::Chunk::ChunkData::value_type value;
             if (startLong == endLong) {
                 value = (chunkData[startLong] >> startOffset);
             } else {

src/render/loader/WorldLoader.cpp

@@ -56,8 +56,8 @@ GL::VertexArray loadWorldModel(const td::game::World* world) {
         const td::game::ChunkCoord& coords = chunkInfo.first;
         td::game::ChunkPtr chunk = chunkInfo.second;
 
-        std::int32_t chunkX = coords.first * td::game::Chunk::ChunkWidth;
+        std::int32_t chunkX = coords.x * td::game::Chunk::ChunkWidth;
-        std::int32_t chunkY = coords.second * td::game::Chunk::ChunkHeight;
+        std::int32_t chunkY = coords.y * td::game::Chunk::ChunkHeight;
 
         for (int tileY = 0; tileY < td::game::Chunk::ChunkHeight; tileY++) {
             for (int tileX = 0; tileX < td::game::Chunk::ChunkWidth; tileX++) {
@@ -97,8 +97,8 @@ GL::VertexArray loadWorldModel(const td::game::World* world) {
 
     for (int spawnColor = 0; spawnColor < 2; spawnColor++) {
         const game::Spawn& spawn = world->getTeam(game::TeamColor(spawnColor)).getSpawn();
-        float fromX = spawn.getTopLeft().getX() , toX = spawn.getBottomRight().getX();
+        float fromX = spawn.getTopLeft().getX(), toX = spawn.getBottomRight().getX();
-        float fromY = spawn.getTopLeft().getY() , toY = spawn.getBottomRight().getY();
+        float fromY = spawn.getTopLeft().getY(), toY = spawn.getBottomRight().getY();
 
         positions.insert(positions.end(), {
             fromX, fromY,