48 lines
1.6 KiB
Rust
48 lines
1.6 KiB
Rust
// Copyright 2020 Sergiusz 'q3k' Bazanski <q3k@q3k.org>
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//
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// This file is part of Abrasion.
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//
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// Abrasion is free software: you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation, version 3.
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//
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// Abrasion is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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// details.
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//
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// You should have received a copy of the GNU General Public License along with
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// Abrasion. If not, see <https://www.gnu.org/licenses/>.
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use std::cmp::PartialEq;
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/// A map from ResourceID to Vec<T>, useful for building up information about
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/// a scene. This implementation is currently naive, but is pretty fast
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/// compared to a HashMap as it performs no hashing - just uses ResourceIDs.
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/// In the future, this could be ported over to a tree implemention from the
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/// current naive vector-based implementation.
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pub struct ResourceMap<K, V> {
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pub resources: Vec<(K, Vec<V>)>,
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}
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impl<K: PartialEq, V> ResourceMap<K, V> {
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pub fn new() -> Self {
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Self {
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resources: vec![],
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}
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}
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/// Add to a Resource's corresponding vector, creating an empty one first
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/// if needed.
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pub fn add(&mut self, k: K, t: V) {
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for (k2, v) in self.resources.iter_mut() {
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if *k2 == k {
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v.push(t);
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return;
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}
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}
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self.resources.push((k, vec![t]));
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}
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}
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