finish binrw rework

This commit is contained in:
Robin Appelman 2025-05-30 18:28:23 +02:00
commit 048a2e7dbe
7 changed files with 703 additions and 271 deletions

678
Cargo.lock generated
View file

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dependencies = [
"proc-macro2 1.0.10",
"quote 1.0.3",
"unicode-xid 0.2.0",
]
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name = "syn-mid"
version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7be3539f6c128a931cf19dcee741c1af532c7fd387baa739c03dd2e96479338a"
dependencies = [
"proc-macro2 1.0.10",
"quote 1.0.3",
"syn 1.0.18",
]
[[package]]
name = "synstructure"
version = "0.12.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "67656ea1dc1b41b1451851562ea232ec2e5a80242139f7e679ceccfb5d61f545"
dependencies = [
"proc-macro2 1.0.10",
"quote 1.0.3",
"syn 1.0.18",
"unicode-xid 0.2.0",
]
[[package]] [[package]]
name = "unicode-xid" name = "unicode-xid"
@ -244,13 +590,161 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc" checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
[[package]] [[package]]
name = "unicode-xid" name = "walkdir"
version = "0.2.0" version = "2.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c" checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
dependencies = [
"same-file",
"winapi-util",
]
[[package]] [[package]]
name = "version_check" name = "wasm-bindgen"
version = "0.9.1" version = "0.2.100"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"cfg-if",
"once_cell",
"rustversion",
"wasm-bindgen-macro",
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[[package]]
name = "wasm-bindgen-backend"
version = "0.2.100"
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"wasm-bindgen-shared",
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View file

@ -1,6 +1,6 @@
[package] [package]
name = "sourcenav" name = "sourcenav"
version = "0.2.0" version = "0.3.0"
authors = ["Robin Appelman <robin@icewind.nl>"] authors = ["Robin Appelman <robin@icewind.nl>"]
edition = "2018" edition = "2018"
description = "parsing of SourceEngine .nav files" description = "parsing of SourceEngine .nav files"
@ -10,10 +10,15 @@ documentation = "https://docs.rs/sourcenav"
readme = "README.md" readme = "README.md"
[dependencies] [dependencies]
binread = "1.0.1" binrw = "0.15.0"
err-derive = "0.2.4" thiserror = "2.0.12"
aabb-quadtree = "0.2.0" aabb-quadtree = "0.2.0"
euclid = "0.19" euclid = "0.19"
[dev-dependencies] [dev-dependencies]
doc-comment = "0.3.3" doc-comment = "0.3.3"
criterion = "0.6.0"
[[bench]]
name = "bench"
harness = false

View file

@ -10,10 +10,11 @@ navigation areas are exposed.
```rust ```rust
use sourcenav::get_quad_tree; use sourcenav::get_quad_tree;
use std::io::Cursor;
fn main() -> Result<(), Box<dyn std::error::Error>> { fn main() -> Result<(), Box<dyn std::error::Error>> {
let file = std::fs::read("data/pl_badwater.nav")?; let file = std::fs::read("data/pl_badwater.nav")?;
let tree = get_quad_tree(file)?; let tree = get_quad_tree(&mut Cursor::new(file))?;
assert_eq!(220.83125, tree.find_best_height(320.0, -1030.0, 0.0)); assert_eq!(220.83125, tree.find_best_height(320.0, -1030.0, 0.0));

View file

@ -1,38 +1,39 @@
#![feature(test)] use std::hint::black_box;
use criterion::{criterion_group, criterion_main, Criterion};
extern crate test;
use bitbuffer::{BitReadBuffer, BitReadStream, LittleEndian};
use sourcenav::{get_quad_tree, read_areas}; use sourcenav::{get_quad_tree, read_areas};
use std::fs::read; use std::fs::read;
use test::Bencher; use std::io::Cursor;
#[bench] fn bench_badwater_areas(c: &mut Criterion) {
fn bench_badwater_areas(b: &mut Bencher) {
let file = read("data/pl_badwater.nav").unwrap(); let file = read("data/pl_badwater.nav").unwrap();
let data = BitReadStream::new(BitReadBuffer::new(file, LittleEndian));
b.iter(|| { c.bench_function("badwater areas", |b| {
let _ = test::black_box(read_areas(data.clone())); b.iter(|| {
}) let _ = black_box(read_areas(black_box(&mut Cursor::new(&file))));
})
});
} }
#[bench] fn bench_badwater_quads(c: &mut Criterion) {
fn bench_badwater_quads(b: &mut Bencher) {
let file = read("data/pl_badwater.nav").unwrap(); let file = read("data/pl_badwater.nav").unwrap();
let data = BitReadStream::new(BitReadBuffer::new(file, LittleEndian));
b.iter(|| { c.bench_function("badwater areas", |b| {
let _ = test::black_box(get_quad_tree(data.clone())); b.iter(|| {
}) let _ = black_box(get_quad_tree(black_box(&mut Cursor::new(&file))));
})
});
} }
#[bench] fn bench_tree_query(c: &mut Criterion) {
fn bench_tree_query(b: &mut Bencher) {
let file = read("data/pl_badwater.nav").unwrap(); let file = read("data/pl_badwater.nav").unwrap();
let tree = get_quad_tree(file).unwrap(); let tree = get_quad_tree(&mut Cursor::new(&file)).unwrap();
b.iter(|| { c.bench_function("badwater areas", |b| {
test::black_box(tree.find_best_height(320.0, -1030.0, 0.0)); b.iter(|| {
}) let _ = black_box(tree.find_best_height(black_box(320.0), black_box(-1030.0), black_box(0.0)));
})
});
} }
criterion_group!(benches, bench_badwater_areas, bench_badwater_quads, bench_tree_query);
criterion_main!(benches);

View file

@ -3,10 +3,9 @@ pub use crate::navmesh::{
ApproachArea, Connections, EncounterPath, LadderConnections, LadderDirection, LightIntensity, ApproachArea, Connections, EncounterPath, LadderConnections, LadderDirection, LightIntensity,
NavDirection, NavHidingSpot, NavQuad, Vector3, VisibleArea, NavDirection, NavHidingSpot, NavQuad, Vector3, VisibleArea,
}; };
use crate::parser::read_quads;
pub use crate::parser::{read_areas, NavArea, ParseError}; pub use crate::parser::{read_areas, NavArea, ParseError};
use aabb_quadtree::{ItemId, QuadTree}; use aabb_quadtree::{ItemId, QuadTree};
use binread::io::{Read, Seek}; use binrw::io::{Read, Seek};
use euclid::{TypedPoint2D, TypedRect, TypedSize2D}; use euclid::{TypedPoint2D, TypedRect, TypedSize2D};
mod navmesh; mod navmesh;
@ -23,17 +22,18 @@ pub struct NavQuadTree(QuadTree<NavQuad, HammerUnit, [(ItemId, Rect); 4]>);
/// ///
/// ```no_run /// ```no_run
/// use sourcenav::get_quad_tree; /// use sourcenav::get_quad_tree;
/// use std::io::Cursor;
/// ///
/// # fn main() -> Result<(), Box<dyn std::error::Error>> { /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
/// let file = std::fs::read("path/to/navfile.nav")?; /// let file = std::fs::read("path/to/navfile.nav")?;
/// let tree = get_quad_tree(file)?; /// let tree = get_quad_tree(&mut Cursor::new(file))?;
/// # Ok(()) /// # Ok(())
/// # } /// # }
/// ``` /// ```
pub fn get_quad_tree<R: Read + Seek>(data: &mut R) -> Result<NavQuadTree, ParseError> { pub fn get_quad_tree<R: Read + Seek>(data: &mut R) -> Result<NavQuadTree, ParseError> {
let areas = read_quads(data)?; let areas = read_areas(data)?;
let (min_x, min_y, max_x, max_y) = areas.iter().fold( let (min_x, min_y, max_x, max_y) = areas.iter().map(|area| &area.quad).fold(
(f32::MAX, f32::MAX, f32::MIN, f32::MIN), (f32::MAX, f32::MAX, f32::MIN, f32::MIN),
|(min_x, min_y, max_x, max_y), area| { |(min_x, min_y, max_x, max_y), area| {
( (
@ -54,7 +54,7 @@ pub fn get_quad_tree<R: Read + Seek>(data: &mut R) -> Result<NavQuadTree, ParseE
); );
for area in areas { for area in areas {
tree.insert(area); tree.insert(area.quad);
} }
Ok(NavQuadTree(tree)) Ok(NavQuadTree(tree))
@ -67,10 +67,11 @@ impl NavQuadTree {
/// ///
/// ```no_run /// ```no_run
/// use sourcenav::get_quad_tree; /// use sourcenav::get_quad_tree;
/// use std::io::Cursor;
/// ///
/// # fn main() -> Result<(), Box<dyn std::error::Error>> { /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
/// let file = std::fs::read("path/to/navfile.nav")?; /// let file = std::fs::read("path/to/navfile.nav")?;
/// let tree = get_quad_tree(file)?; /// let tree = get_quad_tree(&mut Cursor::new(file))?;
/// let areas = tree.query(150.0, -312.0); /// let areas = tree.query(150.0, -312.0);
/// # Ok(()) /// # Ok(())
/// # } /// # }
@ -89,15 +90,16 @@ impl NavQuadTree {
/// ///
/// ```no_run /// ```no_run
/// use sourcenav::get_quad_tree; /// use sourcenav::get_quad_tree;
/// use std::io::Cursor;
/// ///
/// # fn main() -> Result<(), Box<dyn std::error::Error>> { /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
/// let file = std::fs::read("path/to/navfile.nav")?; /// let file = std::fs::read("path/to/navfile.nav")?;
/// let tree = get_quad_tree(file)?; /// let tree = get_quad_tree(&mut Cursor::new(file))?;
/// let heights = tree.find_z_height(150.0, -312.0); /// let heights = tree.find_z_height(150.0, -312.0);
/// # Ok(()) /// # Ok(())
/// # } /// # }
/// ``` /// ```
pub fn find_z_height<'a>(&'a self, x: f32, y: f32) -> impl Iterator<Item = f32> + 'a { pub fn find_z_height(&self, x: f32, y: f32) -> impl Iterator<Item = f32> + '_ {
self.query(x, y).map(move |area| area.get_z_height(x, y)) self.query(x, y).map(move |area| area.get_z_height(x, y))
} }
@ -123,10 +125,11 @@ impl NavQuadTree {
/// ///
/// ```no_run /// ```no_run
/// use sourcenav::get_quad_tree; /// use sourcenav::get_quad_tree;
/// use std::io::Cursor;
/// ///
/// # fn main() -> Result<(), Box<dyn std::error::Error>> { /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
/// let file = std::fs::read("path/to/navfile.nav")?; /// let file = std::fs::read("path/to/navfile.nav")?;
/// let tree = get_quad_tree(file)?; /// let tree = get_quad_tree(&mut Cursor::new(file))?;
/// for quad in tree.quads() { /// for quad in tree.quads() {
/// println!("area: {:?}", quad) /// println!("area: {:?}", quad)
/// } /// }

View file

@ -1,11 +1,12 @@
use crate::Rect; use crate::Rect;
use aabb_quadtree::Spatial; use aabb_quadtree::Spatial;
use binread::io::{Read, Seek}; use binrw::io::{Read, Seek};
use binread::{BinRead, BinReaderExt, BinResult, ReadOptions}; use binrw::{BinRead, BinReaderExt, BinResult, Endian};
use euclid::{TypedPoint2D, TypedSize2D}; use euclid::{TypedPoint2D, TypedSize2D};
use std::fmt; use std::fmt;
use std::fmt::Debug; use std::fmt::Debug;
use std::ops::Index; use std::ops::Index;
use std::convert::TryFrom;
/// A 3 dimensional coordinate /// A 3 dimensional coordinate
#[derive(Debug, BinRead)] #[derive(Debug, BinRead)]
@ -21,12 +22,29 @@ impl fmt::Display for NavAreaId {
} }
} }
#[derive(Debug, Clone, Copy)]
pub struct NavAreaFlags(pub u32);
impl BinRead for NavAreaFlags {
type Args<'a> = (u32,);
fn read_options<R: Read + Seek>(reader: &mut R, endian: Endian, args: Self::Args<'static>) -> BinResult<Self> {
let flags = match args.0 {
0..=8 => reader.read_type::<u8>(endian)? as u32,
9..=12 => reader.read_type::<u16>(endian)? as u32,
13.. => reader.read_type::<u32>(endian)?,
};
Ok(NavAreaFlags(flags))
}
}
/// A navigation area from the nav file /// A navigation area from the nav file
#[derive(Debug, BinRead)] #[derive(Debug, BinRead)]
#[br(import(major_version: u32))] #[br(import(major_version: u32))]
pub struct NavArea { pub struct NavArea {
pub id: NavAreaId, pub id: NavAreaId,
pub flags: u32, #[br(args(major_version))]
pub flags: NavAreaFlags,
pub quad: NavQuad, pub quad: NavQuad,
pub connections: Connections, pub connections: Connections,
pub hiding_spots_count: u8, pub hiding_spots_count: u8,
@ -77,12 +95,12 @@ pub(crate) struct HammerUnit;
pub struct Connections([Vec<NavAreaId>; 4]); pub struct Connections([Vec<NavAreaId>; 4]);
impl BinRead for Connections { impl BinRead for Connections {
type Args = (); type Args<'a> = ();
fn read_options<R: Read + Seek>( fn read_options<R: Read + Seek>(
reader: &mut R, reader: &mut R,
options: &ReadOptions, _endian: Endian,
args: Self::Args, _args: Self::Args<'static>,
) -> BinResult<Self> { ) -> BinResult<Self> {
let mut connections = [Vec::new(), Vec::new(), Vec::new(), Vec::new()]; let mut connections = [Vec::new(), Vec::new(), Vec::new(), Vec::new()];
@ -128,12 +146,12 @@ impl Index<NavDirection> for Connections {
pub struct LadderConnections([Vec<NavAreaId>; 2]); pub struct LadderConnections([Vec<NavAreaId>; 2]);
impl BinRead for LadderConnections { impl BinRead for LadderConnections {
type Args = (); type Args<'a> = ();
fn read_options<R: Read + Seek>( fn read_options<R: Read + Seek>(
reader: &mut R, reader: &mut R,
options: &ReadOptions, _endian: Endian,
args: Self::Args, _args: Self::Args<'static>,
) -> BinResult<Self> { ) -> BinResult<Self> {
let mut connections = [Vec::new(), Vec::new()]; let mut connections = [Vec::new(), Vec::new()];
@ -160,6 +178,7 @@ impl Index<LadderDirection> for LadderConnections {
/// The directions in which two areas can be connected /// The directions in which two areas can be connected
#[derive(Debug, BinRead)] #[derive(Debug, BinRead)]
#[repr(u8)] #[repr(u8)]
#[br(repr =u8)]
pub enum NavDirection { pub enum NavDirection {
North, North,
East, East,
@ -170,6 +189,7 @@ pub enum NavDirection {
/// The directions in which two areas can be connected by ladder /// The directions in which two areas can be connected by ladder
#[derive(Debug, BinRead)] #[derive(Debug, BinRead)]
#[repr(u8)] #[repr(u8)]
#[br(repr =u8)]
pub enum LadderDirection { pub enum LadderDirection {
Up, Up,
Down, Down,
@ -178,37 +198,37 @@ pub enum LadderDirection {
/// A hiding spot within an area /// A hiding spot within an area
#[derive(Debug, BinRead)] #[derive(Debug, BinRead)]
pub struct NavHidingSpot { pub struct NavHidingSpot {
id: u32, pub id: u32,
location: Vector3, pub location: Vector3,
flags: u8, pub flags: u8,
} }
/// An area that can be used for approach, no longer used in newer nav files /// An area that can be used for approach, no longer used in newer nav files
#[derive(Debug, BinRead)] #[derive(Debug, BinRead)]
pub struct ApproachArea { pub struct ApproachArea {
approach_here: u32, pub approach_here: u32,
approach_pre: u32, pub approach_pre: u32,
approach_type: u8, pub approach_type: u8,
approach_next: u32, pub approach_next: u32,
approach_how: u8, pub approach_how: u8,
} }
/// A path that can be used to approach an area /// A path that can be used to approach an area
#[derive(Debug, BinRead)] #[derive(Debug, BinRead)]
pub struct EncounterPath { pub struct EncounterPath {
from_area_id: NavAreaId, pub from_area_id: NavAreaId,
from_direction: u8, pub from_direction: u8,
to_area_id: NavAreaId, pub to_area_id: NavAreaId,
to_direction: u8, pub to_direction: u8,
spot_count: u8, pub spot_count: u8,
#[br(count = spot_count)] #[br(count = spot_count)]
spots: Vec<EncounterSpot>, pub spots: Vec<EncounterSpot>,
} }
#[derive(Debug, BinRead)] #[derive(Debug, BinRead)]
pub struct EncounterSpot { pub struct EncounterSpot {
order: u32, pub order: u32,
distance: u8, // divide by 255 pub distance: u8, // divide by 255
} }
/// The light intensity at the four corners of an area /// The light intensity at the four corners of an area
@ -223,14 +243,15 @@ pub struct LightIntensity {
/// An area that is visible /// An area that is visible
#[derive(Debug, BinRead)] #[derive(Debug, BinRead)]
pub struct VisibleArea { pub struct VisibleArea {
id: u32, pub id: u32,
attributes: u8, pub attributes: u8,
} }
#[derive(Debug)] #[derive(Debug)]
#[allow(dead_code)]
pub struct NavPlace { pub struct NavPlace {
id: u32, pub id: u32,
name: String, pub name: String,
} }
/// A navigation area from the nav file /// A navigation area from the nav file
@ -256,10 +277,11 @@ impl NavQuad {
/// ///
/// ```no_run /// ```no_run
/// use sourcenav::get_quad_tree; /// use sourcenav::get_quad_tree;
/// use std::io::Cursor;
/// ///
/// # fn main() -> Result<(), Box<dyn std::error::Error>> { /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
/// let file = std::fs::read("path/to/navfile.nav")?; /// let file = std::fs::read("path/to/navfile.nav")?;
/// let tree = get_quad_tree(file)?; /// let tree = get_quad_tree(&mut Cursor::new(file))?;
/// let area = tree.query(150.0, -312.0).next().unwrap(); /// let area = tree.query(150.0, -312.0).next().unwrap();
/// ///
/// let height = area.get_z_height(150.0, -312.0); /// let height = area.get_z_height(150.0, -312.0);

View file

@ -1,28 +1,34 @@
pub use crate::navmesh::NavArea; pub use crate::navmesh::NavArea;
use crate::navmesh::NavQuad; use binrw::io::{Read, Seek};
use crate::{Connections, EncounterPath, LadderConnections, NavHidingSpot, VisibleArea}; use binrw::{BinRead, BinReaderExt};
use binread::io::{Read, Seek, SeekFrom}; use thiserror::Error;
use binread::{BinRead, BinReaderExt, ReadOptions}; use std::convert::TryFrom;
use err_derive::Error;
use std::mem::size_of;
/// Errors that can occur when parsing the binary nav file /// Errors that can occur when parsing the binary nav file
#[derive(Debug, Error)] #[derive(Debug, Error)]
pub enum ParseError { pub enum ParseError {
/// An error ocured when reading from the source binary data /// An error occurred when reading from the source binary data
#[error(display = "Error while reading from data: {}", _0)] #[error("Error while reading from data: {0}")]
ReadError(#[error(source)] binread::Error), Io(#[from] std::io::Error),
#[error( /// An error occurred when reading from the source binary data
display = "Invalid magic number ({:#8X}), not a nav file or corrupted", #[error("Error while reading from data: {0}")]
_0 ReadError(#[from] binrw::Error),
)]
/// The binary data contained an invalid magic number and is probably not a nav file /// The binary data contained an invalid magic number and is probably not a nav file
#[error("Invalid magic number ({0:#8X}), not a nav file or corrupted")]
InvalidMagicNumber(u32), InvalidMagicNumber(u32),
/// The version of the nav file is not supported by this parser /// The version of the nav file is not supported by this parser
#[error(display = "The major version for this nav ({}), is not supported", _0)] #[error("The major version for this nav ({0}), is not supported")]
UnsupportedVersion(u32), UnsupportedVersion(u32),
} }
#[derive(BinRead)]
#[allow(dead_code)]
struct FixedString {
string_len: u16,
#[br(count = string_len)]
string: Vec<u8>,
}
/// Parse all navigation areas from a nav file /// Parse all navigation areas from a nav file
/// ///
/// ## Examples /// ## Examples
@ -31,12 +37,14 @@ pub enum ParseError {
/// use sourcenav::read_areas; /// use sourcenav::read_areas;
/// ///
/// # fn main() -> Result<(), Box<dyn std::error::Error>> { /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
/// use std::io::Cursor;
/// let file = std::fs::read("path/to/navfile.nav")?; /// let file = std::fs::read("path/to/navfile.nav")?;
/// let tree = read_areas(file)?; /// let tree = read_areas(&mut Cursor::new(file))?;
/// # Ok(()) /// # Ok(())
/// # } /// # }
/// ``` /// ```
pub fn read_areas<R: Read + Seek>(data: &mut R) -> Result<Vec<NavArea>, ParseError> { pub fn read_areas<R: Read + Seek>(data: &mut R) -> Result<Vec<NavArea>, ParseError> {
let magic = data.read_le()?; let magic = data.read_le()?;
if magic != 0xFEED_FACE { if magic != 0xFEED_FACE {
return Err(ParseError::InvalidMagicNumber(magic)); return Err(ParseError::InvalidMagicNumber(magic));
@ -44,7 +52,7 @@ pub fn read_areas<R: Read + Seek>(data: &mut R) -> Result<Vec<NavArea>, ParseErr
let major_version: u32 = data.read_le()?; let major_version: u32 = data.read_le()?;
if major_version < 6 || major_version > 16 { if !(6..=16).contains(&major_version) {
return Err(ParseError::UnsupportedVersion(major_version)); return Err(ParseError::UnsupportedVersion(major_version));
} }
@ -57,7 +65,7 @@ pub fn read_areas<R: Read + Seek>(data: &mut R) -> Result<Vec<NavArea>, ParseErr
let _size: u32 = data.read_le()?; let _size: u32 = data.read_le()?;
let _is_analysed = if major_version >= 14 { let _is_analysed = if major_version >= 14 {
data.read_le::<u8>(8)? == 1 data.read_le::<u8>()? == 1
} else { } else {
false false
}; };
@ -66,13 +74,12 @@ pub fn read_areas<R: Read + Seek>(data: &mut R) -> Result<Vec<NavArea>, ParseErr
// let places = Vec::with_capacity(place_count as usize); // let places = Vec::with_capacity(place_count as usize);
for _id in 1..=place_count { for _id in 1..=place_count {
let name_length: u16 = data.read_le()?; let _name: FixedString = data.read_le()?;
let _name = data.read_string(Some(name_length as usize))?;
// TODO // TODO
} }
let _has_unnamed_areas = if major_version >= 12 { let _has_unnamed_areas = if major_version >= 12 {
data.read_le::<u8>(8)? == 1 data.read_le::<u8>()? == 1
} else { } else {
false false
}; };
@ -82,117 +89,16 @@ pub fn read_areas<R: Read + Seek>(data: &mut R) -> Result<Vec<NavArea>, ParseErr
let mut areas = Vec::with_capacity(area_count as usize); let mut areas = Vec::with_capacity(area_count as usize);
for _ in 0..area_count { for _ in 0..area_count {
areas.push(data.read_le()?); areas.push(data.read_le_args((major_version,))?);
} }
debug_assert!(data.bits_left() <= 32);
Ok(areas)
}
pub(crate) fn read_quads<R: Read + Seek>(data: &mut R) -> Result<Vec<NavQuad>, ParseError> {
let magic = data.read_le()?;
if magic != 0xFEED_FACE {
return Err(ParseError::InvalidMagicNumber(magic));
}
let major_version: u32 = data.read_le()?;
if major_version != 16 {
return Err(ParseError::UnsupportedVersion(major_version));
}
let _minor_version: u32 = if major_version >= 10 {
data.read_le()?
} else {
0
};
let _size: u32 = data.read_le()?;
let _is_analysed = if major_version >= 14 {
data.read_le::<u8>(8)? == 1
} else {
false
};
let place_count: u16 = data.read_le()?;
// let places = Vec::with_capacity(place_count as usize);
for _id in 1..=place_count {
let name_length: u16 = data.read_le()?;
let _name = data.read_string(Some(name_length as usize))?;
// TODO
}
let _has_unnamed_areas = if major_version >= 12 {
data.read_le::<u8>(8)? == 1
} else {
false
};
let area_count: u32 = data.read_le()?;
let mut areas = Vec::with_capacity(area_count as usize);
for _ in 0..area_count {
data.seek(SeekFrom::Current(4 * 2))?; // id and flags
let north_west = data.read_le()?;
let south_east = data.read_le()?;
let north_east_z = data.read_le()?;
let south_west_z = data.read_le()?;
Connections::skip(&mut data)?;
let hiding_spots_count: u8 = data.read_le()?;
data.seek(SeekFrom::Current(
size_of::<NavHidingSpot>() as i64 * hiding_spots_count as i64,
))?;
let encounter_paths_count: u32 = data.read_le()?;
for _ in 0..encounter_paths_count {
EncounterPath::skip(&mut data)?;
}
data.seek(SeekFrom::Current(2))?;
let _: LadderConnections = data.read_le()?;
data.seek(SeekFrom::Current((4 * 2) + (4 * 4)))?; // occupy time, light intensity
let visible_areas_count: u32 = data.read_le()?;
data.seek(SeekFrom::Current(
size_of::<VisibleArea>() as i64 * visible_areas_count as i64,
))?;
data.seek(SeekFrom::Current(4 * 2))?; // inherit visible, garbage
areas.push(NavQuad {
north_west,
south_east,
north_east_z,
south_west_z,
});
}
debug_assert!(data.bits_left() <= 32);
Ok(areas) Ok(areas)
} }
#[test] #[test]
fn test() { fn test() {
use std::io::Cursor;
let file = std::fs::read("data/pl_badwater.nav").unwrap(); let file = std::fs::read("data/pl_badwater.nav").unwrap();
let data = BitReadStream::new(bitbuffer::BitReadBuffer::new(file, LittleEndian)); let areas = read_areas(&mut Cursor::new(file)).unwrap();
let areas = read_areas(data).unwrap();
assert_eq!(1930, areas.len()); assert_eq!(1930, areas.len());
} }
#[test]
fn test_quads() {
let file = std::fs::read("data/pl_badwater.nav").unwrap();
let data = BitReadStream::new(bitbuffer::BitReadBuffer::new(file, LittleEndian));
let quads = read_quads(data).unwrap();
assert_eq!(1930, quads.len());
}