Method occupy_parts

perro_source/render_stack/perro_graphics/src/resources.rs:60–85

(&mut self, index: u32, generation: u32)

    }

    #[inline]
    fn remove_parts(&mut self, index: u32, generation: u32) -> bool {
        if !self.contains_parts(index, generation) {
            return false;
        }
        let slot = index as usize - 1;
        self.occupied[slot] = false;
        self.free_slots.push(slot);
        true
    }

    #[inline]
    fn occupy_parts(&mut self, index: u32, generation: u32) -> bool {
        if index == 0 || index > MAX_EXPLICIT_RESOURCE_INDEX {
            return false;
        }
        let slot = index as usize - 1;
        if self.generations.len() <= slot {
            let start = self.generations.len();
            self.generations.resize(slot + 1, 0);
            self.occupied.resize(slot + 1, false);
            for s in start..slot {
                self.free_slots.push(s);
            }
        }
        if self.occupied[slot] {
            return self.generations[slot] == generation;
        }
        if self.generations[slot] > generation {