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/target
/files

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lib/roblox_bot_file/Cargo.lock generated Normal file
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4
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[[package]]
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lib/roblox_bot_file/Cargo.toml Normal file
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[package]
name = "strafesnet_roblox_bot_file"
version = "0.2.0"
edition = "2021"
[dependencies]
binrw = "0.14.1"
bitflags = "2.6.0"

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Apache License
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Permission is hereby granted, free of charge, to any
person obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the
Software without restriction, including without
limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice
shall be included in all copies or substantial portions
of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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Roblox Bhop/Surf Bot File Format
================================
## Example
```rust
use strafesnet_roblox_bot_file::{File,TimedBlockId};
let file=std::fs::File::open("bot_file")?;
let input=std::io::BufReader::new(file);
let mut bot_file=File::new(input)?;
// read the whole file
let block=bot_file.read_all()?;
// or do data streaming block by block
for &TimedBlockId{time,block_id} in &bot_file.header.offline_blocks_timeline{
// header is immutably borrowed
// while data is mutably borrowed
let block_info=bot_file.header.block_info(block_id)?;
let block=bot_file.data.read_block_info(block_info)?;
// offline blocks include the following event types:
// World, Gravity, Run, Camera, Setting
}
for &TimedBlockId{time,block_id} in &bot_file.header.realtime_blocks_timeline{
let block_info=bot_file.header.block_info(block_id)?;
let block=bot_file.data.read_block_info(block_info)?;
// realtime blocks include the following event types:
// Input, Output, Sound
}
```
#### License
<sup>
Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
</sup>
<br>
<sub>
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.
</sub>

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pub mod v0;
#[cfg(test)]
mod tests;

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use crate::v0::TimedBlockId;
#[test]
fn _1()->Result<(),crate::v0::Error>{
let file=std::fs::File::open("files/bhop_marble_7cf33a64-7120-4514-b9fa-4fe29d9523d").unwrap();
let input=std::io::BufReader::new(file);
let mut bot_file=crate::v0::File::new(input).unwrap();
println!("header={:?}",bot_file.header);
for &TimedBlockId{time,block_id} in &bot_file.header.offline_blocks_timeline{
println!("offline time={} block_id={:?}",time,block_id);
let block_info=bot_file.header.block_info(block_id)?;
let block=bot_file.data.read_block_info(block_info)?;
// offline blocks include the following event types:
// World, Gravity, Run, Camera, Setting
}
for &TimedBlockId{time,block_id} in &bot_file.header.realtime_blocks_timeline{
println!("realtime time={} block_id={:?}",time,block_id);
let block_info=bot_file.header.block_info(block_id)?;
let block=bot_file.data.read_block_info(block_info)?;
// realtime blocks include the following event types:
// Input, Output, Sound
}
Ok(())
}
#[test]
fn _2()->Result<(),crate::v0::Error>{
let file=std::fs::File::open("files/bhop_marble_7cf33a64-7120-4514-b9fa-4fe29d9523d").unwrap();
let input=std::io::BufReader::new(file);
let t0=std::time::Instant::now();
let mut bot_file=crate::v0::File::new(input).unwrap();
let block=bot_file.read_all()?;
println!("{:?}",t0.elapsed());
Ok(())
}

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use binrw::{binrw,BinReaderExt,io::TakeSeekExt};
// the bit chunks are deposited in reverse
fn read_trey_float(bits:u32)->f32{
let s=bits&1;
let e=(bits>>1)&((1<<8)-1);
let m=(bits>>(1+8))&((1<<23)-1);
f32::from_bits(m|(e<<23)|(s<<31))
}
fn read_trey_double(bits:u64)->f64{
let s=bits&1;
let e=(bits>>1)&((1<<11)-1);
let m=(bits>>(1+11))&((1<<52)-1);
f64::from_bits(m|(e<<52)|(s<<63))
}
#[binrw]
#[brw(little)]
pub struct Vector2{
#[br(map=read_trey_float)]
pub x:f32,
#[br(map=read_trey_float)]
pub y:f32,
}
#[binrw]
#[brw(little)]
pub struct Vector3{
#[br(map=read_trey_float)]
pub x:f32,
#[br(map=read_trey_float)]
pub y:f32,
#[br(map=read_trey_float)]
pub z:f32,
}
bitflags::bitflags!{
pub struct GameControls:u32{
const MoveForward=1<<0;
const MoveLeft=1<<1;
const MoveBack=1<<2;
const MoveRight=1<<3;
const MoveUp=1<<4;
const MoveDown=1<<5;
const LookUp=1<<6;
const LookLeft=1<<7;
const LookDown=1<<8;
const LookRight=1<<9;
const Jump=1<<10;
const Crouch=1<<11;
const Sprint=1<<12;
const Zoom=1<<13;
const Use=1<<14;
const Action1=1<<15;
const Action2=1<<16;
}
}
#[derive(Debug)]
pub struct GameControlsError;
impl std::fmt::Display for GameControlsError{
fn fmt(&self,f:&mut std::fmt::Formatter<'_>)->std::fmt::Result{
write!(f,"{self:?}")
}
}
impl std::error::Error for GameControlsError{}
impl GameControls{
fn try_from_bits(bits:u32)->Result<Self,GameControlsError>{
Self::from_bits(bits).ok_or(GameControlsError)
}
}
// input
#[binrw]
#[brw(little)]
pub struct InputEvent{
#[br(try_map=GameControls::try_from_bits)]
#[bw(map=GameControls::bits)]
pub game_controls:GameControls,
pub mouse_pos:Vector2,
}
#[binrw]
#[brw(little)]
pub struct TimedInputEvent{
#[br(map=read_trey_double)]
pub time:f64,
pub event:InputEvent,
}
// output
bitflags::bitflags!{
pub struct TickInfo:u32{
const TickEnd=1<<0;
const Jump=1<<1;
const Strafe=1<<2;
const Touching=1<<3;
}
}
#[derive(Debug)]
pub struct TickInfoError;
impl std::fmt::Display for TickInfoError{
fn fmt(&self,f:&mut std::fmt::Formatter<'_>)->std::fmt::Result{
write!(f,"{self:?}")
}
}
impl std::error::Error for TickInfoError{}
impl TickInfo{
fn try_from_bits(bits:u32)->Result<Self,TickInfoError>{
Self::from_bits(bits).ok_or(TickInfoError)
}
}
#[binrw]
#[brw(little)]
pub struct OutputEvent{
#[br(try_map=TickInfo::try_from_bits)]
#[bw(map=TickInfo::bits)]
pub tick_info:TickInfo,
pub angles:Vector3,
pub position:Vector3,
pub velocity:Vector3,
pub acceleration:Vector3,
}
#[binrw]
#[brw(little)]
pub struct TimedOutputEvent{
#[br(map=read_trey_double)]
pub time:f64,
pub event:OutputEvent,
}
// sound
#[binrw]
#[brw(little)]
pub enum SoundType{
#[brw(magic=101u32)]
TrackGround,
#[brw(magic=102u32)]
TrackLadder,
#[brw(magic=103u32)]
TrackWater,
#[brw(magic=104u32)]
TrackAir,
#[brw(magic=201u32)]
JumpGround,
#[brw(magic=202u32)]
JumpLadder,
#[brw(magic=301u32)]
SmashGround,
#[brw(magic=302u32)]
SmashWall,
}
#[binrw]
#[brw(little)]
pub struct SoundEvent{
pub sound_type:SoundType,
/// Roblox enum
pub material:u32,
}
#[binrw]
#[brw(little)]
pub struct TimedSoundEvent{
#[br(map=read_trey_double)]
pub time:f64,
pub event:SoundEvent,
}
// world
#[binrw]
#[brw(little)]
pub struct WorldEventReset{
pub position:Vector3,
}
#[binrw]
#[brw(little)]
pub struct WorldEventButton{
#[br(pad_after=8)]
pub button_id:u32,
}
#[binrw]
#[brw(little)]
pub struct WorldEventSetTime{
#[br(map=read_trey_double)]
#[br(pad_after=4)]
pub time:f64,
}
#[binrw]
#[brw(little)]
pub struct WorldEventSetPaused{
#[br(map=|paused:u32|paused!=0)]
#[bw(map=|paused:&bool|*paused as u32)]
#[br(pad_after=8)]
pub paused:bool,
}
#[binrw]
#[brw(little)]
pub enum WorldEvent{
#[brw(magic=0u32)]
Reset(WorldEventReset),
#[brw(magic=1u32)]
Button(WorldEventButton),
#[brw(magic=2u32)]
SetTime(WorldEventSetTime),
#[brw(magic=3u32)]
SetPaused(WorldEventSetPaused),
}
#[binrw]
#[brw(little)]
pub struct TimedWorldEvent{
#[br(map=read_trey_double)]
pub time:f64,
pub event:WorldEvent,
}
// gravity
#[binrw]
#[brw(little)]
pub struct GravityEvent{
pub gravity:Vector3,
}
#[binrw]
#[brw(little)]
pub struct TimedGravityEvent{
#[br(map=read_trey_double)]
pub time:f64,
pub event:GravityEvent,
}
// run
#[binrw]
#[brw(little)]
pub enum RunEventType{
#[brw(magic=0u32)]
Prepare,
#[brw(magic=1u32)]
Start,
#[brw(magic=2u32)]
Finish,
#[brw(magic=3u32)]
Clear,
#[brw(magic=4u32)]
Flag,
#[brw(magic=5u32)]
LoadState,
#[brw(magic=6u32)]
SaveState,
}
#[binrw]
#[brw(little)]
pub enum Mode{
#[brw(magic=0i32)]
Main,
#[brw(magic=1i32)]
Bonus,
#[brw(magic=-1i32)]
All,
#[brw(magic=-2i32)]
Invalid,
#[brw(magic=-3i32)]
InProgress,
}
#[binrw]
#[brw(little)]
pub enum FlagReason{
#[brw(magic=0u32)]
Anticheat,
#[brw(magic=1u32)]
StyleChange,
#[brw(magic=2u32)]
Clock,
#[brw(magic=3u32)]
Pause,
#[brw(magic=4u32)]
Flying,
#[brw(magic=5u32)]
Gravity,
#[brw(magic=6u32)]
Timescale,
#[brw(magic=7u32)]
Timetravel,
#[brw(magic=8u32)]
Teleport,
#[brw(magic=9u32)]
Practice,
// b"data"
#[brw(magic=1635017060u32)]
None,
}
#[binrw]
#[brw(little)]
pub struct RunEvent{
pub run_event_type:RunEventType,
pub mode:Mode,
pub flag_reason:FlagReason,
}
#[binrw]
#[brw(little)]
pub struct TimedRunEvent{
#[br(map=read_trey_double)]
pub time:f64,
pub event:RunEvent,
}
// camera
#[binrw]
#[brw(little)]
pub enum CameraEventType{
#[brw(magic=0u32)]
CameraPunch,
#[brw(magic=1u32)]
Transform,
}
#[binrw]
#[brw(little)]
pub struct CameraEvent{
pub camera_event_type:CameraEventType,
pub value:Vector3,
}
#[binrw]
#[brw(little)]
pub struct TimedCameraEvent{
#[br(map=read_trey_double)]
pub time:f64,
pub event:CameraEvent,
}
// setting
#[binrw]
#[brw(little)]
pub enum SettingType{
#[brw(magic=0u32)]
FieldOfView,
#[brw(magic=1u32)]
Sensitivity,
#[brw(magic=2u32)]
VerticalSensitivityMultiplier,
#[brw(magic=3u32)]
AbsoluteSensitivity,
#[brw(magic=4u32)]
TurnSpeed,
}
#[binrw]
#[brw(little)]
pub struct SettingEvent{
pub setting_type:SettingType,
#[br(map=read_trey_double)]
pub value:f64,
}
#[binrw]
#[brw(little)]
pub struct TimedSettingEvent{
#[br(map=read_trey_double)]
pub time:f64,
pub event:SettingEvent,
}
#[derive(Default)]
pub struct Block{
pub input_events:Vec<TimedInputEvent>,
pub output_events:Vec<TimedOutputEvent>,
pub sound_events:Vec<TimedSoundEvent>,
pub world_events:Vec<TimedWorldEvent>,
pub gravity_events:Vec<TimedGravityEvent>,
pub run_events:Vec<TimedRunEvent>,
pub camera_events:Vec<TimedCameraEvent>,
pub setting_events:Vec<TimedSettingEvent>,
}
#[binrw]
#[brw(little)]
enum EventType{
#[brw(magic=1u32)]
Input,
#[brw(magic=2u32)]
Output,
#[brw(magic=3u32)]
Sound,
#[brw(magic=4u32)]
World,
#[brw(magic=5u32)]
Gravity,
#[brw(magic=6u32)]
Run,
#[brw(magic=7u32)]
Camera,
#[brw(magic=8u32)]
Setting,
}
#[binrw]
#[brw(little)]
struct EventChunkHeader{
event_type:EventType,
num_events:u32,
}
// first time I've managed to write BinRead generics without this stupid T::Args<'a>:Required thing blocking me
fn read_data_into_events<'a,R:BinReaderExt,T>(data:&mut R,events:&mut Vec<T>,num_events:usize)->binrw::BinResult<()>
where
T:binrw::BinRead,
T::Args<'a>:binrw::__private::Required,
{
// there is only supposed to be at most one of each type of event chunk per block, so no need to amortize.
events.reserve_exact(num_events);
for _ in 0..num_events{
events.push(data.read_le()?);
}
Ok(())
}
fn read_data_into_events_amortized<'a,R:BinReaderExt,T>(data:&mut R,events:&mut Vec<T>,num_events:usize)->binrw::BinResult<()>
where
T:binrw::BinRead,
T::Args<'a>:binrw::__private::Required,
{
// this is used when reading multiple blocks into a single object, so amortize the allocation cost.
events.reserve(num_events);
for _ in 0..num_events{
events.push(data.read_le()?);
}
Ok(())
}
impl Block{
fn read<R:BinReaderExt>(data:R)->binrw::BinResult<Block>{
let mut block=Block::default();
Block::read_into(data,&mut block)?;
Ok(block)
}
fn read_into<R:BinReaderExt>(mut data:R,block:&mut Block)->binrw::BinResult<()>{
// well... this looks error prone
while let Ok(event_chunk_header)=data.read_le::<EventChunkHeader>(){
match event_chunk_header.event_type{
EventType::Input=>read_data_into_events(&mut data,&mut block.input_events,event_chunk_header.num_events as usize)?,
EventType::Output=>read_data_into_events(&mut data,&mut block.output_events,event_chunk_header.num_events as usize)?,
EventType::Sound=>read_data_into_events(&mut data,&mut block.sound_events,event_chunk_header.num_events as usize)?,
EventType::World=>read_data_into_events(&mut data,&mut block.world_events,event_chunk_header.num_events as usize)?,
EventType::Gravity=>read_data_into_events(&mut data,&mut block.gravity_events,event_chunk_header.num_events as usize)?,
EventType::Run=>read_data_into_events(&mut data,&mut block.run_events,event_chunk_header.num_events as usize)?,
EventType::Camera=>read_data_into_events(&mut data,&mut block.camera_events,event_chunk_header.num_events as usize)?,
EventType::Setting=>read_data_into_events(&mut data,&mut block.setting_events,event_chunk_header.num_events as usize)?,
}
}
Ok(())
}
fn read_into_amortized<R:BinReaderExt>(mut data:R,block:&mut Block)->binrw::BinResult<()>{
// sad code duplication
while let Ok(event_chunk_header)=data.read_le::<EventChunkHeader>(){
match event_chunk_header.event_type{
EventType::Input=>read_data_into_events_amortized(&mut data,&mut block.input_events,event_chunk_header.num_events as usize)?,
EventType::Output=>read_data_into_events_amortized(&mut data,&mut block.output_events,event_chunk_header.num_events as usize)?,
EventType::Sound=>read_data_into_events_amortized(&mut data,&mut block.sound_events,event_chunk_header.num_events as usize)?,
EventType::World=>read_data_into_events_amortized(&mut data,&mut block.world_events,event_chunk_header.num_events as usize)?,
EventType::Gravity=>read_data_into_events_amortized(&mut data,&mut block.gravity_events,event_chunk_header.num_events as usize)?,
EventType::Run=>read_data_into_events_amortized(&mut data,&mut block.run_events,event_chunk_header.num_events as usize)?,
EventType::Camera=>read_data_into_events_amortized(&mut data,&mut block.camera_events,event_chunk_header.num_events as usize)?,
EventType::Setting=>read_data_into_events_amortized(&mut data,&mut block.setting_events,event_chunk_header.num_events as usize)?,
}
}
Ok(())
}
}
#[derive(Debug)]
pub enum Error{
InvalidBlockId(BlockId),
Seek(std::io::Error),
InvalidData(binrw::Error),
}
impl std::fmt::Display for Error{
fn fmt(&self,f:&mut std::fmt::Formatter<'_>)->std::fmt::Result{
write!(f,"{self:?}")
}
}
impl std::error::Error for Error{}
#[binrw]
#[brw(little)]
#[derive(Debug,Clone,Copy)]
pub struct BlockId(#[br(map=|i:u32|i-1)]u32);
#[binrw]
#[brw(little)]
#[derive(Debug,Clone,Copy)]
pub struct BlockPosition(#[br(map=|i:u32|i-1)]u32);
#[binrw]
#[brw(little)]
#[derive(Debug,Clone,Copy)]
pub struct TimedBlockId{
#[br(map=read_trey_double)]
pub time:f64,
pub block_id:BlockId,
}
impl PartialEq for TimedBlockId{
fn eq(&self,other:&Self)->bool{
self.time.eq(&other.time)
}
}
impl PartialOrd for TimedBlockId{
fn partial_cmp(&self,other:&Self)->Option<core::cmp::Ordering>{
self.time.partial_cmp(&other.time)
}
}
#[binrw]
#[brw(little)]
#[derive(Debug)]
pub struct FileHeader{
#[brw(magic=b"qbot")]
pub file_version:u32,
pub num_offline_events:u32,
pub num_realtime_events:u32,
#[br(count=num_offline_events+num_realtime_events+1)]
pub block_positions:Vec<BlockPosition>,
#[br(count=num_offline_events)]
pub offline_blocks_timeline:Vec<TimedBlockId>,
#[br(count=num_realtime_events)]
pub realtime_blocks_timeline:Vec<TimedBlockId>,
}
pub struct BlockInfo{
start:u32,
length:u32,
}
impl FileHeader{
pub fn block_info(&self,block_id:BlockId)->Result<BlockInfo,Error>{
if self.block_positions.len() as u32<=block_id.0{
return Err(Error::InvalidBlockId(block_id));
}
let start=self.block_positions[block_id.0 as usize].0;
let end=self.block_positions[block_id.0 as usize+1].0;
Ok(BlockInfo{start,length:end-start})
}
}
struct MergeIter<T,It0:Iterator<Item=T>,It1:Iterator<Item=T>>{
it0:It0,
it1:It1,
item0:Option<T>,
item1:Option<T>,
}
impl<T,It0:Iterator<Item=T>,It1:Iterator<Item=T>> MergeIter<T,It0,It1>{
fn new(mut it0:It0,mut it1:It1)->Self{
Self{
item0:it0.next(),
item1:it1.next(),
it0,
it1,
}
}
}
impl<T:PartialOrd,It0:Iterator<Item=T>,It1:Iterator<Item=T>> Iterator for MergeIter<T,It0,It1>{
type Item=T;
fn next(&mut self)->Option<Self::Item>{
match (&self.item0,&self.item1){
(None,None)=>None,
(Some(_),None)=>core::mem::replace(&mut self.item0,self.it0.next()),
(None,Some(_))=>core::mem::replace(&mut self.item1,self.it1.next()),
(Some(item0),Some(item1))=>match item0.partial_cmp(item1){
Some(core::cmp::Ordering::Less)
|Some(core::cmp::Ordering::Equal)
|None
=>core::mem::replace(&mut self.item0,self.it0.next()),
Some(core::cmp::Ordering::Greater)
=>core::mem::replace(&mut self.item1,self.it1.next()),
},
}
}
}
pub struct File<R:BinReaderExt>{
pub header:FileHeader,
pub data:FileData<R>,
}
impl<R:BinReaderExt> File<R>{
pub fn new(mut data:R)->Result<File<R>,binrw::Error>{
Ok(File{
header:data.read_le()?,
data:FileData{data},
})
}
pub fn read_all(&mut self)->Result<Block,Error>{
let block_iter=MergeIter::new(
self.header.offline_blocks_timeline.iter(),
self.header.realtime_blocks_timeline.iter(),
);
let mut big_block=Block::default();
for &TimedBlockId{time:_,block_id} in block_iter{
let block_info=self.header.block_info(block_id)?;
self.data.read_block_info_into_block(block_info,&mut big_block)?;
}
Ok(big_block)
}
}
pub struct FileData<R:BinReaderExt>{
data:R,
}
impl<R:BinReaderExt> FileData<R>{
fn data_mut(&mut self)->&mut R{
&mut self.data
}
fn block_reader(&mut self,block_info:BlockInfo)->Result<binrw::io::TakeSeek<&mut R>,Error>{
self.data.seek(std::io::SeekFrom::Start(block_info.start as u64)).map_err(Error::Seek)?;
Ok(self.data_mut().take_seek(block_info.length as u64))
}
pub fn read_block_info(&mut self,block_info:BlockInfo)->Result<Block,Error>{
let data=self.block_reader(block_info)?;
let block=Block::read(data).map_err(Error::InvalidData)?;
Ok(block)
}
pub fn read_block_info_into_block(&mut self,block_info:BlockInfo,block:&mut Block)->Result<(),Error>{
let data=self.block_reader(block_info)?;
Block::read_into_amortized(data,block).map_err(Error::InvalidData)?;
Ok(())
}
}