blob: 92b61d547812a175ff418ac3985745ed1dcac21d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// Copyright (C) Oscar Shrimpton 2019
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>.
//! Parses visdata from Q3 BSPs.
use bitvec::prelude::*;
use std::vec::IntoIter;
use super::file::Q3BSPFile;
use crate::coords::CoordSystem;
use crate::helpers::slice_to_i32;
use crate::traits::visdata::*;
use crate::types::{ParseError, Result};
/// Stores cluster-to-cluster visibility information.
pub fn from_data(data: &[u8]) -> Result<Box<[BitBox<Local, u8>]>> {
if data.len() < 8 {
return Err(ParseError::Invalid);
}
let n_vecs = slice_to_i32(&data[0..4]) as usize;
let size_vecs = slice_to_i32(&data[4..8]) as usize;
if data.len() - 8 != (n_vecs * size_vecs) {
return Err(ParseError::Invalid);
}
let mut vecs = Vec::with_capacity(n_vecs);
for n in 0..n_vecs {
let offset = 8 + (n * size_vecs);
let slice = &data[offset..offset + size_vecs];
vecs.push(BitBox::from_slice(slice));
}
Ok(vecs.into_boxed_slice())
}
impl<T: CoordSystem> HasVisData for Q3BSPFile<T> {
type VisibleIterator = IntoIter<ClusterId>;
fn all_visible_from(&self, from: ClusterId) -> Self::VisibleIterator {
let mut visible = vec![];
for (idx, val) in self.visdata[from as usize].iter().enumerate() {
if *val {
visible.push(idx as u32);
}
}
visible.into_iter()
}
fn cluster_visible_from(&self, from: ClusterId, dest: ClusterId) -> bool {
self.visdata[from as usize][dest as usize]
}
}
|
