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// 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/>.
use std::iter::Iterator;
pub type TextureRef = u32;
pub trait IsTexture {
fn name(&self) -> &str;
}
pub trait HasTextures {
type Texture: IsTexture;
fn get_texture(&self, idx: TextureRef) -> Option<&Self::Texture>;
fn iter_textures(&self) -> Textures<Self> {
Textures {
next: 0,
container: self,
}
}
}
#[derive(Debug, Clone, Copy)]
pub struct Textures<'a, T: HasTextures + ?Sized> {
next: TextureRef,
container: &'a T,
}
impl<'a, T: HasTextures> Iterator for Textures<'a, T> {
type Item = &'a T::Texture;
fn next(&mut self) -> Option<Self::Item> {
let res = self.container.get_texture(self.next);
self.next += 1;
res
}
}
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