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// Copyright (C) 2019 Oscar Shrimpton
//
// This file is part of stockton-bsp.
//
// stockton-bsp 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.
//
// stockton-bsp 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 stockton-bsp. If not, see <http://www.gnu.org/licenses/>.
use crate::helpers::{slice_to_u32, slice_to_vec3};
use crate::types::{Result, ParseError};
use crate::coords::CoordSystem;
use crate::traits::models::*;
use super::Q3BSPFile;
const MODEL_SIZE: usize = (4 * 3 * 2) + (4 * 4);
pub fn from_data(
data: &[u8],
n_faces: u32,
n_brushes: u32,
) -> Result<Box<[Model]>> {
if data.len() % MODEL_SIZE != 0 {
return Err(ParseError::Invalid);
}
let n_models = data.len() / MODEL_SIZE;
let mut models = Vec::with_capacity(n_models);
for n in 0..n_models {
let raw = &data[n * MODEL_SIZE..(n + 1) * MODEL_SIZE];
let mins = slice_to_vec3(&raw[0..12]);
let maxs = slice_to_vec3(&raw[12..24]);
let faces_idx = {
let start = slice_to_u32(&raw[24..28]);
let n = slice_to_u32(&raw[28..32]);
if start + n > n_faces {
return Err(ParseError::Invalid);
}
start..start+n
};
let brushes_idx = {
let start = slice_to_u32(&raw[32..36]);
let n = slice_to_u32(&raw[36..40]);
if start + n > n_brushes {
return Err(ParseError::Invalid);
}
start..start+n
};
models.push(Model {
mins,
maxs,
faces_idx,
brushes_idx,
})
}
Ok(models.into_boxed_slice())
}
impl<T: CoordSystem> HasModels<T> for Q3BSPFile<T> {
type ModelsIter<'a> = std::slice::Iter<'a, Model>;
fn models_iter<'a>(&'a self) -> Self::ModelsIter<'a> {
self.models.iter()
}
fn get_model<'a>(&'a self, index: u32) -> &'a Model {
&self.models[index as usize]
}
}
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