StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
text
Body
copied!<p>First you need to design your file layer, you need fixed size data to determine how to decode your variable data, for example, the first four bytes you read could tell how many tiles there are, the next 4 bytes could tell how many map files there are, after that you for example have the first file, you have to define your file information, eg which file and how many bytes it is, then you know how many bytes you're away from the next file entry, etc...</p> <p>You can also use structures and overload the ofstream operators << and >> for it to create your own filetype, <a href="https://code.google.com/p/gpb/downloads/detail?name=NFSMOD.0.4.9.zip" rel="nofollow">I did this myself when creating a replay system for Need For Speed Underground 2</a>.</p> <pre><code>struct Point4D { float x, y, z, w; }; struct Point3D { float x, y, z; }; struct Point2D { float x, y; }; struct QuatRot { Point4D Front;//frontvector Point4D Right;//rightvector Point4D Up;//upvector }; #define NFS_MAX_VEHICLES (14)//seriously just 14.. (including the player) struct VehicleInfo { //type name array offset float unknown_01 [8]; //0x0 Point3D Pos; //0x20 float unknown_02; //0x2C QuatRot Rotation; //0x30 Point3D unknown_03; //0x60 float unknown_04; //0x6C Point3D Velocity; //0x70 float unknown_05; //0x7C Point3D TurnSpeed; //0x80 float unknown_06; //0x8C float SpeedAndBrakeAccelerator; //0x90 float unknown_07 [3]; //0x94 Point3D unknown_08; //0xA0 float unknown_09; //0xAC Point4D unknown_10 [5]; //0xB0 float unknown_11 [20]; //0x100 float unknown_12_is_zero_when_accelerating; //0x150 //end of structure...? }; std::ostream& operator<<(std::ostream& stream, const VehicleInfo &info); //overload << and >> operators on "VehicleInfo" type std::ofstream& operator<<(std::ofstream& stream, VehicleInfo &info); std::ifstream& operator>>(std::ifstream& stream, VehicleInfo &info); //overload << and >> operators on "FrameInfo" type std::ofstream& operator<<(std::ofstream& stream, Recorder::FrameInfo &info); std::ifstream& operator>>(std::ifstream& stream, Recorder::FrameInfo &info); namespace Recorder { struct FrameInfo//1392 bytes / frame | max 167040 bytes @ 120 fps | 9.56 MB / min max { std::chrono::high_resolution_clock::duration time; VehicleInfo Vehicle; int Nitro; float RPM; float TURBO; int CurrentGear; KeyManager Keys[256]; }; }; std::ofstream& operator<<(std::ofstream& stream, VehicleInfo &info) { stream.write(reinterpret_cast<char*>(&info.unknown_01[0]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_01[1]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_01[2]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_01[3]), sizeof(float)); //... stream.write(reinterpret_cast<char*>(&info.unknown_11[18]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_11[19]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_11[20]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_12_is_zero_when_accelerating), sizeof(float)); return stream; } std::ifstream& operator>>(std::ifstream& stream, VehicleInfo &info) { stream.read(reinterpret_cast<char*>(&info.unknown_01[0]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_01[1]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_01[2]), sizeof(float)); //..... stream.read(reinterpret_cast<char*>(&info.unknown_11[16]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_11[17]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_11[18]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_11[19]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_11[20]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_12_is_zero_when_accelerating), sizeof(float)); return stream; } std::ofstream& operator<<(std::ofstream& stream, Recorder::FrameInfo &info) { stream.write(reinterpret_cast<char*>(&info.time), sizeof(std::chrono::high_resolution_clock::duration)); stream << info.Vehicle; stream.write(reinterpret_cast<char*>(&info.Nitro), sizeof(int)); stream.write(reinterpret_cast<char*>(&info.RPM), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.CurrentGear), sizeof(int)); stream.write(reinterpret_cast<char*>(&info.TURBO), sizeof(int)); for(int i = 0; i < 256; ++i) { stream.write(reinterpret_cast<char*>(&info.Keys[i].Pressed), sizeof(bool)); stream.write(reinterpret_cast<char*>(&info.Keys[i].Released), sizeof(bool)); stream.write(reinterpret_cast<char*>(&info.Keys[i].Down), sizeof(bool)); stream.write(reinterpret_cast<char*>(&info.Keys[i].Up), sizeof(bool)); } return stream; } std::ifstream& operator>>(std::ifstream& stream, Recorder::FrameInfo &info) { stream.read(reinterpret_cast<char*>(&info.time), sizeof(std::chrono::high_resolution_clock::duration)); stream >> info.Vehicle; stream.read(reinterpret_cast<char*>(&info.Nitro), sizeof(int)); stream.read(reinterpret_cast<char*>(&info.RPM), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.CurrentGear), sizeof(int)); stream.read(reinterpret_cast<char*>(&info.TURBO), sizeof(int)); for(int i = 0; i < 256; ++i) { stream.read(reinterpret_cast<char*>(&info.Keys[i].Pressed), sizeof(bool)); stream.read(reinterpret_cast<char*>(&info.Keys[i].Released), sizeof(bool)); stream.read(reinterpret_cast<char*>(&info.Keys[i].Down), sizeof(bool)); stream.read(reinterpret_cast<char*>(&info.Keys[i].Up), sizeof(bool)); } return stream; } /// std::stringstream& operator<<(std::stringstream& stream, VehicleInfo &info) { stream.write(reinterpret_cast<char*>(&info.unknown_01[0]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_01[1]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_01[2]), sizeof(float)); //... stream.write(reinterpret_cast<char*>(&info.unknown_11[19]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_11[20]), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.unknown_12_is_zero_when_accelerating), sizeof(float)); return stream; } std::stringstream& operator>>(std::stringstream& stream, VehicleInfo &info) { stream.read(reinterpret_cast<char*>(&info.unknown_01[0]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_01[1]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_01[2]), sizeof(float)); //.... stream.read(reinterpret_cast<char*>(&info.unknown_11[20]), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.unknown_12_is_zero_when_accelerating), sizeof(float)); return stream; } std::stringstream& operator<<(std::stringstream& stream, Recorder::FrameInfo &info) { stream.write(reinterpret_cast<char*>(&info.time), sizeof(std::chrono::high_resolution_clock::duration)); stream << info.Vehicle; stream.write(reinterpret_cast<char*>(&info.Nitro), sizeof(int)); stream.write(reinterpret_cast<char*>(&info.RPM), sizeof(float)); stream.write(reinterpret_cast<char*>(&info.CurrentGear), sizeof(int)); stream.write(reinterpret_cast<char*>(&info.TURBO), sizeof(int)); for(int i = 0; i < 256; ++i) { stream.write(reinterpret_cast<char*>(&info.Keys[i].Pressed), sizeof(bool)); stream.write(reinterpret_cast<char*>(&info.Keys[i].Released), sizeof(bool)); stream.write(reinterpret_cast<char*>(&info.Keys[i].Down), sizeof(bool)); stream.write(reinterpret_cast<char*>(&info.Keys[i].Up), sizeof(bool)); } return stream; } std::stringstream& operator>>(std::stringstream& stream, Recorder::FrameInfo &info) { stream.read(reinterpret_cast<char*>(&info.time), sizeof(std::chrono::high_resolution_clock::duration)); stream >> info.Vehicle; stream.read(reinterpret_cast<char*>(&info.Nitro), sizeof(int)); stream.read(reinterpret_cast<char*>(&info.RPM), sizeof(float)); stream.read(reinterpret_cast<char*>(&info.CurrentGear), sizeof(int)); stream.read(reinterpret_cast<char*>(&info.TURBO), sizeof(int)); for(int i = 0; i < 256; ++i) { stream.read(reinterpret_cast<char*>(&info.Keys[i].Pressed), sizeof(bool)); stream.read(reinterpret_cast<char*>(&info.Keys[i].Released), sizeof(bool)); stream.read(reinterpret_cast<char*>(&info.Keys[i].Down), sizeof(bool)); stream.read(reinterpret_cast<char*>(&info.Keys[i].Up), sizeof(bool)); } return stream; } </code></pre>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload