rust/hwphysics/src/data.rs
author alfadur
Tue, 03 Sep 2019 23:57:06 +0300
changeset 15413 b387a51705ac
parent 15408 90a79670de52
child 15414 0ef770a40e75
permissions -rw-r--r--
implement iteration with tags
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use super::common::GearId;
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use std::{
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    any::TypeId,
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    fmt::{Debug, Error, Formatter},
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    marker::PhantomData,
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    mem::{size_of, MaybeUninit},
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    num::NonZeroU16,
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    ptr::{copy_nonoverlapping, null_mut, NonNull},
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    slice,
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};
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pub trait TypeTuple: Sized {
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    fn get_types(types: &mut Vec<TypeId>);
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}
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impl TypeTuple for () {
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    fn get_types(types: &mut Vec<TypeId>) {}
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}
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impl<T: 'static> TypeTuple for &T {
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    fn get_types(types: &mut Vec<TypeId>) {
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        types.push(TypeId::of::<T>());
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    }
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}
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pub trait TypeIter: TypeTuple {
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    unsafe fn iter<F: FnMut(GearId, Self)>(slices: &[*mut u8], count: usize, f: F);
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}
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macro_rules! type_tuple_impl {
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    ($($n: literal: $t: ident),+) => {
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        impl<$($t: 'static),+> TypeTuple for ($(&$t),+,) {
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            fn get_types(types: &mut Vec<TypeId>) {
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                $(types.push(TypeId::of::<$t>()));+
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            }
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        }
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        impl<$($t: 'static),+> TypeIter for ($(&$t),+,) {
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            unsafe fn iter<F: FnMut(GearId, Self)>(slices: &[*mut u8], count: usize, mut f: F) {
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                for i in 0..count {
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                    f(*(*slices.get_unchecked(0) as *const GearId).add(i),
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                      ($(&*(*slices.get_unchecked($n + 1) as *mut $t).add(i)),+,));
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                }
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            }
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        }
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        impl<$($t: 'static),+> TypeTuple for ($(&mut $t),+,) {
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            fn get_types(types: &mut Vec<TypeId>) {
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                $(types.push(TypeId::of::<$t>()));+
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            }
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        }
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        impl<$($t: 'static),+> TypeIter for ($(&mut $t),+,) {
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            unsafe fn iter<F: FnMut(GearId, Self)>(slices: &[*mut u8], count: usize, mut f: F) {
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                for i in 0..count {
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                    f(*(*slices.get_unchecked(0) as *const GearId).add(i),
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                      ($(&mut *(*slices.get_unchecked($n + 1) as *mut $t).add(i)),+,));
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                }
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            }
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        }
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    }
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}
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type_tuple_impl!(0: A);
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type_tuple_impl!(0: A, 1: B);
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type_tuple_impl!(0: A, 1: B, 2: C);
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type_tuple_impl!(0: A, 1: B, 2: C, 3: D);
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type_tuple_impl!(0: A, 1: B, 2: C, 3: D, 4: E);
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const BLOCK_SIZE: usize = 32768;
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struct DataBlock {
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    max_elements: u16,
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    elements_count: u16,
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    data: Box<[u8; BLOCK_SIZE]>,
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    component_blocks: [Option<NonNull<u8>>; 64],
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    element_sizes: Box<[u16]>,
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}
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impl Unpin for DataBlock {}
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impl Debug for DataBlock {
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    fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
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        write!(
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            f,
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            "Block ({}/{}) {{\n",
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            self.elements_count, self.max_elements
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        )?;
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        write!(f, "\tIDs: [")?;
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        let id_slice = unsafe {
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            slice::from_raw_parts(
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                self.data.as_ptr() as *const GearId,
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                self.elements_count as usize,
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            )
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        };
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        for gear_id in id_slice {
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            write!(f, "{}, ", gear_id)?;
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        }
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        write!(f, "]\n")?;
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        for type_index in 0..self.element_sizes.len() {
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            if let Some(ptr) = self.component_blocks[type_index] {
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                write!(f, "\tC{}: [", type_index)?;
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                let slice = unsafe {
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                    slice::from_raw_parts(
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                        ptr.as_ptr(),
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                        (self.elements_count * self.element_sizes[type_index]) as usize,
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                    )
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                };
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                for byte in slice {
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                    write!(f, "{}, ", byte)?;
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                }
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                write!(f, "]\n")?;
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            }
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        }
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        write!(f, "}}\n")
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    }
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}
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impl DataBlock {
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    fn new(mask: u64, element_sizes: &[u16]) -> Self {
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        let total_size: u16 = element_sizes
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            .iter()
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            .enumerate()
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            .filter(|(i, _)| mask & (1 << *i as u64) != 0)
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            .map(|(_, size)| *size)
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            .sum();
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        let max_elements = (BLOCK_SIZE / (total_size as usize + size_of::<GearId>())) as u16;
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        let mut data: Box<[u8; BLOCK_SIZE]> =
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            Box::new(unsafe { MaybeUninit::uninit().assume_init() });
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        let mut blocks = [None; 64];
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        let mut offset = size_of::<GearId>() * max_elements as usize;
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        for i in 0..element_sizes.len() {
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            if mask & (1 << i as u64) != 0 {
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                blocks[i] = Some(NonNull::new(data[offset..].as_mut_ptr()).unwrap());
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                offset += element_sizes[i] as usize * max_elements as usize;
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            }
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        }
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        Self {
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            elements_count: 0,
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            max_elements,
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            data,
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            component_blocks: blocks,
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            element_sizes: Box::from(element_sizes),
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        }
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    }
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    fn gear_ids(&self) -> &[GearId] {
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        unsafe {
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            slice::from_raw_parts(
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                self.data.as_ptr() as *const GearId,
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                self.max_elements as usize,
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            )
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        }
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    }
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    fn gear_ids_mut(&mut self) -> &mut [GearId] {
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        unsafe {
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            slice::from_raw_parts_mut(
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                self.data.as_mut_ptr() as *mut GearId,
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                self.max_elements as usize,
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            )
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        }
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    }
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    fn is_full(&self) -> bool {
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        self.elements_count == self.max_elements
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    }
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}
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#[derive(Clone, Copy, Debug, Default)]
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struct LookupEntry {
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    index: Option<NonZeroU16>,
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    block_index: u16,
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}
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impl LookupEntry {
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    fn new(block_index: u16, index: u16) -> Self {
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        Self {
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            index: unsafe { Some(NonZeroU16::new_unchecked(index + 1)) },
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            block_index,
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        }
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    }
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}
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#[derive(Copy, Clone, Eq, PartialEq, Debug)]
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struct BlockMask {
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    type_mask: u64,
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    tag_mask: u64,
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}
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impl BlockMask {
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    #[inline]
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    fn new(type_mask: u64, tag_mask: u64) -> Self {
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        Self {
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            type_mask,
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            tag_mask,
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        }
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    }
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    #[inline]
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    fn with_type(&self, type_bit: u64) -> Self {
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        Self::new(self.type_mask | type_bit, self.tag_mask)
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    }
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    #[inline]
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    fn with_tag(&self, tag_bit: u64) -> Self {
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        Self::new(self.type_mask, self.tag_mask | tag_bit)
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    }
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}
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pub struct GearDataManager {
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    types: Vec<TypeId>,
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    tags: Vec<TypeId>,
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    blocks: Vec<DataBlock>,
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    block_masks: Vec<BlockMask>,
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    element_sizes: Box<[u16; 64]>,
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    lookup: Box<[LookupEntry]>,
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}
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impl GearDataManager {
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    pub fn new() -> Self {
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        Self {
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            types: Vec::with_capacity(64),
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            tags: Vec::with_capacity(64),
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            blocks: vec![],
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            block_masks: vec![],
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            element_sizes: Box::new([0; 64]),
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            lookup: vec![LookupEntry::default(); u16::max_value() as usize].into_boxed_slice(),
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        }
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    }
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    #[inline]
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    fn get_type_index<T: 'static>(&self) -> Option<usize> {
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        let type_id = TypeId::of::<T>();
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        self.types.iter().position(|id| *id == type_id)
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    }
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    #[inline]
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    fn get_tag_index<T: 'static>(&self) -> Option<usize> {
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        let type_id = TypeId::of::<T>();
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        self.tags.iter().position(|id| *id == type_id)
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    }
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    fn move_between_blocks(&mut self, src_block_index: u16, src_index: u16, dest_block_index: u16) {
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        debug_assert!(src_block_index != dest_block_index);
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        let src_mask = self.block_masks[src_block_index as usize];
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        let dest_mask = self.block_masks[dest_block_index as usize];
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        debug_assert!(src_mask.type_mask & dest_mask.type_mask == src_mask.type_mask);
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        let src_block = &self.blocks[src_block_index as usize];
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        let dest_block = &self.blocks[dest_block_index as usize];
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        debug_assert!(src_index < src_block.elements_count);
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        debug_assert!(!dest_block.is_full());
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        let dest_index = dest_block.elements_count;
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        for i in 0..self.types.len() {
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            if src_mask.type_mask & (1 << i as u64) != 0 {
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                let size = self.element_sizes[i];
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                let src_ptr = src_block.component_blocks[i].unwrap().as_ptr();
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                let dest_ptr = dest_block.component_blocks[i].unwrap().as_ptr();
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                unsafe {
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                    copy_nonoverlapping(
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                        src_ptr.add((src_index * size) as usize),
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                        dest_ptr.add((dest_index * size) as usize),
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                        size as usize,
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                    );
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                    if src_index < src_block.elements_count - 1 {
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                        copy_nonoverlapping(
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                            src_ptr.add((size * (src_block.elements_count - 1)) as usize),
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                            src_ptr.add((size * src_index) as usize),
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                            size as usize,
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                        );
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                    }
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                }
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            }
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        }
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        let src_block = &mut self.blocks[src_block_index as usize];
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        let gear_id = src_block.gear_ids()[src_index as usize];
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        if src_index < src_block.elements_count - 1 {
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            let relocated_index = src_block.elements_count as usize - 1;
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            let gear_ids = src_block.gear_ids_mut();
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            let relocated_id = gear_ids[relocated_index];
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            gear_ids[src_index as usize] = relocated_id;
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            self.lookup[relocated_id.get() as usize - 1] =
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                LookupEntry::new(src_block_index, src_index);
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        }
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        src_block.elements_count -= 1;
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        let dest_block = &mut self.blocks[dest_block_index as usize];
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        let dest_index = dest_block.elements_count;
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        dest_block.gear_ids_mut()[dest_index as usize] = gear_id;
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        self.lookup[gear_id.get() as usize - 1] = LookupEntry::new(dest_block_index, dest_index);
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        dest_block.elements_count += 1;
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    }
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    fn add_to_block<T: Clone>(&mut self, gear_id: GearId, block_index: u16, value: &T) {
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        debug_assert!(
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            self.block_masks[block_index as usize]
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                .type_mask
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                .count_ones()
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                == 1
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        );
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        let block = &mut self.blocks[block_index as usize];
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        debug_assert!(block.elements_count < block.max_elements);
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        unsafe {
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            let slice = slice::from_raw_parts_mut(
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                block.component_blocks[0].unwrap().as_ptr() as *mut T,
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                block.max_elements as usize,
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            );
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            *slice.get_unchecked_mut(block.elements_count as usize) = value.clone();
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        };
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        let index = block.elements_count;
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        self.lookup[gear_id.get() as usize - 1] = LookupEntry::new(block_index, index);
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        block.gear_ids_mut()[index as usize] = gear_id;
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        block.elements_count += 1;
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    }
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    fn remove_from_block(&mut self, block_index: u16, index: u16) {
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        let block = &mut self.blocks[block_index as usize];
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        debug_assert!(index < block.elements_count);
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   330
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        for (i, size) in self.element_sizes.iter().cloned().enumerate() {
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            if index < block.elements_count - 1 {
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                if let Some(ptr) = block.component_blocks[i] {
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                    unsafe {
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                        copy_nonoverlapping(
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diff changeset
   336
                            ptr.as_ptr()
277acc9f9fcf implement addition to/removal from blocks
alfadur
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diff changeset
   337
                                .add((size * (block.elements_count - 1)) as usize),
277acc9f9fcf implement addition to/removal from blocks
alfadur
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diff changeset
   338
                            ptr.as_ptr().add((size * index) as usize),
277acc9f9fcf implement addition to/removal from blocks
alfadur
parents: 15375
diff changeset
   339
                            size as usize,
277acc9f9fcf implement addition to/removal from blocks
alfadur
parents: 15375
diff changeset
   340
                        );
277acc9f9fcf implement addition to/removal from blocks
alfadur
parents: 15375
diff changeset
   341
                    }
277acc9f9fcf implement addition to/removal from blocks
alfadur
parents: 15375
diff changeset
   342
                }
277acc9f9fcf implement addition to/removal from blocks
alfadur
parents: 15375
diff changeset
   343
            }
277acc9f9fcf implement addition to/removal from blocks
alfadur
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diff changeset
   344
        }
15396
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   345
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   346
        self.lookup[block.gear_ids()[index as usize].get() as usize - 1] = LookupEntry::default();
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   347
        if index < block.elements_count - 1 {
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   348
            let relocated_index = block.elements_count as usize - 1;
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   349
            let gear_ids = block.gear_ids_mut();
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   350
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   351
            gear_ids[index as usize] = gear_ids[relocated_index];
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   352
            self.lookup[gear_ids[relocated_index].get() as usize - 1] =
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   353
                LookupEntry::new(block_index, index);
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   354
        }
15378
277acc9f9fcf implement addition to/removal from blocks
alfadur
parents: 15375
diff changeset
   355
        block.elements_count -= 1;
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   356
    }
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   357
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   358
    #[inline]
15408
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   359
    fn ensure_block(&mut self, mask: BlockMask) -> u16 {
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   360
        if let Some(index) = self
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   361
            .block_masks
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   362
            .iter()
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   363
            .enumerate()
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   364
            .position(|(i, m)| *m == mask && !self.blocks[i].is_full())
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   365
        {
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   366
            index as u16
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   367
        } else {
15396
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   368
            self.blocks.push(DataBlock::new(
15408
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   369
                mask.type_mask,
15396
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   370
                &self.element_sizes[0..self.types.len()],
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   371
            ));
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   372
            self.block_masks.push(mask);
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   373
            (self.blocks.len() - 1) as u16
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   374
        }
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   375
    }
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   376
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   377
    pub fn add<T: Clone + 'static>(&mut self, gear_id: GearId, value: &T) {
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   378
        if let Some(type_index) = self.get_type_index::<T>() {
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   379
            let type_bit = 1 << type_index as u64;
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   380
            let entry = self.lookup[gear_id.get() as usize - 1];
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   381
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   382
            if let Some(index) = entry.index {
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   383
                let mask = self.block_masks[entry.block_index as usize];
15408
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   384
                let new_mask = mask.with_type(type_bit);
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   385
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   386
                if new_mask != mask {
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   387
                    let dest_block_index = self.ensure_block(new_mask);
15396
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   388
                    self.move_between_blocks(entry.block_index, index.get() - 1, dest_block_index);
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   389
                }
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   390
            } else {
15408
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   391
                let dest_block_index = self.ensure_block(BlockMask::new(type_bit, 0));
15396
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   392
                self.add_to_block(gear_id, dest_block_index, value);
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   393
            }
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   394
        } else {
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   395
            panic!("Unregistered type")
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   396
        }
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   397
    }
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   398
15408
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   399
    pub fn add_tag<T: 'static>(&mut self, gear_id: GearId) {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   400
        if let Some(tag_index) = self.get_tag_index::<T>() {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   401
            let tag_bit = 1 << tag_index as u64;
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   402
            let entry = self.lookup[gear_id.get() as usize - 1];
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   403
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   404
            if let Some(index) = entry.index {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   405
                let mask = self.block_masks[entry.block_index as usize];
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   406
                let new_mask = mask.with_tag(tag_bit);
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   407
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   408
                if new_mask != mask {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   409
                    let dest_block_index = self.ensure_block(new_mask);
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   410
                    self.move_between_blocks(entry.block_index, index.get() - 1, dest_block_index);
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   411
                }
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   412
            } else {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   413
                panic!("Cannot tag a gear with no data")
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   414
            }
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   415
        } else {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   416
            panic!("Unregistered tag")
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   417
        }
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   418
    }
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   419
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   420
    pub fn remove<T: 'static>(&mut self, gear_id: GearId) {
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   421
        if let Some(type_index) = self.get_type_index::<T>() {
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   422
            let entry = self.lookup[gear_id.get() as usize - 1];
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   423
            if let Some(index) = entry.index {
15408
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   424
                let mut dest_mask = self.block_masks[entry.block_index as usize];
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   425
                dest_mask.type_mask &= !(1 << type_index as u64);
15379
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   426
15408
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   427
                if dest_mask.type_mask == 0 {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   428
                    self.remove_from_block(entry.block_index, index.get() - 1);
15379
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   429
                } else {
15394
5e2b9740086f refill memory when moving out of block
alfadur
parents: 15393
diff changeset
   430
                    let dest_block_index = self.ensure_block(dest_mask);
5e2b9740086f refill memory when moving out of block
alfadur
parents: 15393
diff changeset
   431
                    self.move_between_blocks(entry.block_index, index.get() - 1, dest_block_index);
15379
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   432
                }
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   433
            }
15379
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   434
        } else {
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   435
            panic!("Unregistered type")
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   436
        }
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   437
    }
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   438
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   439
    pub fn remove_all(&mut self, gear_id: GearId) {
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   440
        let entry = self.lookup[gear_id.get() as usize - 1];
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   441
        if let Some(index) = entry.index {
135c29237a56 implement moving between blocks
alfadur
parents: 15378
diff changeset
   442
            self.remove_from_block(entry.block_index, index.get() - 1);
15326
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   443
        }
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   444
    }
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   445
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   446
    pub fn register<T: 'static>(&mut self) {
15378
277acc9f9fcf implement addition to/removal from blocks
alfadur
parents: 15375
diff changeset
   447
        debug_assert!(!std::mem::needs_drop::<T>());
277acc9f9fcf implement addition to/removal from blocks
alfadur
parents: 15375
diff changeset
   448
        debug_assert!(size_of::<T>() <= u16::max_value() as usize);
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   449
15326
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   450
        let id = TypeId::of::<T>();
15408
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   451
        if size_of::<T>() == 0 {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   452
            if !self.tags.contains(&id) {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   453
                debug_assert!(self.tags.len() <= 64);
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   454
                self.tags.push(id)
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   455
            }
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   456
        } else {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   457
            if !self.types.contains(&id) {
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   458
                debug_assert!(self.types.len() <= 64);
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   459
                self.element_sizes[self.types.len()] = size_of::<T>() as u16;
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   460
                self.types.push(id);
90a79670de52 allow registering zero-sized types
alfadur
parents: 15402
diff changeset
   461
            }
15326
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   462
        }
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   463
    }
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   464
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   465
    fn run_impl<T: TypeIter + 'static, F: FnMut(GearId, T)>(
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   466
        &mut self,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   467
        type_selector: u64,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   468
        included_tags: u64,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   469
        type_indices: &[i8],
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   470
        mut f: F,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   471
    ) {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   472
        let mut slices = vec![null_mut(); type_indices.len() + 1];
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   473
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   474
        for (block_index, mask) in self.block_masks.iter().enumerate() {
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   475
            if mask.type_mask & type_selector == type_selector
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   476
                && mask.tag_mask & included_tags == included_tags
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   477
            {
15400
27915135f87f allow iterating with gear id
alfadur
parents: 15396
diff changeset
   478
                let block = &mut self.blocks[block_index];
27915135f87f allow iterating with gear id
alfadur
parents: 15396
diff changeset
   479
                slices[0] = block.data.as_mut_ptr();
27915135f87f allow iterating with gear id
alfadur
parents: 15396
diff changeset
   480
15388
d6b4586b271f make sure component slice order corresponds to the type args
alfadur
parents: 15380
diff changeset
   481
                for (arg_index, type_index) in type_indices.iter().cloned().enumerate() {
15400
27915135f87f allow iterating with gear id
alfadur
parents: 15396
diff changeset
   482
                    slices[arg_index as usize + 1] = block.component_blocks[type_index as usize]
15389
445138f388d4 expand iteration implementation to larger tuples
alfadur
parents: 15388
diff changeset
   483
                        .unwrap()
445138f388d4 expand iteration implementation to larger tuples
alfadur
parents: 15388
diff changeset
   484
                        .as_ptr()
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   485
                }
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   486
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   487
                unsafe {
15400
27915135f87f allow iterating with gear id
alfadur
parents: 15396
diff changeset
   488
                    T::iter(&slices[..], block.elements_count as usize, |id, x| f(id, x));
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   489
                }
15326
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   490
            }
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   491
        }
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   492
    }
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   493
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   494
    pub fn iter<T: TypeIter + 'static>(&mut self) -> DataIterator<T> {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   495
        let mut arg_types = Vec::with_capacity(64);
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   496
        T::get_types(&mut arg_types);
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   497
        let mut type_indices = vec![-1i8; arg_types.len()];
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   498
        let mut selector = 0u64;
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   499
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   500
        for (arg_index, type_id) in arg_types.iter().enumerate() {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   501
            match self.types.iter().position(|t| t == type_id) {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   502
                Some(i) if selector & (1 << i as u64) != 0 => panic!("Duplicate type"),
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   503
                Some(i) => {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   504
                    type_indices[arg_index] = i as i8;
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   505
                    selector |= 1 << i as u64;
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   506
                }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   507
                None => panic!("Unregistered type"),
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   508
            }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   509
        }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   510
        DataIterator::new(self, selector, type_indices)
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   511
    }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   512
}
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   513
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   514
pub struct DataIterator<'a, T> {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   515
    data: &'a mut GearDataManager,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   516
    types: u64,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   517
    type_indices: Vec<i8>,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   518
    tags: u64,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   519
    phantom_types: PhantomData<T>,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   520
}
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   521
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   522
impl<'a, T: TypeIter + 'static> DataIterator<'a, T> {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   523
    fn new(
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   524
        data: &'a mut GearDataManager,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   525
        types: u64,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   526
        type_indices: Vec<i8>,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   527
    ) -> DataIterator<'a, T> {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   528
        Self {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   529
            data,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   530
            types,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   531
            type_indices,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   532
            tags: 0,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   533
            phantom_types: PhantomData,
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   534
        }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   535
    }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   536
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   537
    pub fn with_tags<U: TypeTuple + 'static>(self) -> Self {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   538
        let mut tag_types = Vec::with_capacity(64);
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   539
        U::get_types(&mut tag_types);
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   540
        let mut tags = 0;
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   541
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   542
        for (i, tag) in self.data.tags.iter().enumerate() {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   543
            if tag_types.contains(tag) {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   544
                tags |= 1 << i as u64;
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   545
            }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   546
        }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   547
        Self { tags, ..self }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   548
    }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   549
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   550
    #[inline]
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   551
    pub fn run<F: FnMut(T)>(&mut self, mut f: F) {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   552
        self.run_id(|_, x| f(x))
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   553
    }
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   554
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   555
    #[inline]
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   556
    pub fn run_id<F: FnMut(GearId, T)>(&mut self, f: F) {
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   557
        self.data
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   558
            .run_impl(self.types, self.tags, &self.type_indices, f);
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   559
    }
15326
0076bf602969 start gear data group implementation
alfadur
parents:
diff changeset
   560
}
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   561
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   562
#[cfg(test)]
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   563
mod test {
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   564
    use super::{super::common::GearId, GearDataManager};
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   565
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   566
    #[derive(Clone)]
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   567
    struct Datum {
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   568
        value: u32,
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   569
    }
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   570
15392
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   571
    #[derive(Clone)]
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   572
    struct Tag;
15392
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   573
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   574
    #[test]
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   575
    fn single_component_iteration() {
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   576
        let mut manager = GearDataManager::new();
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   577
        manager.register::<Datum>();
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   578
        for i in 1..=5 {
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   579
            manager.add(GearId::new(i as u16).unwrap(), &Datum { value: i });
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   580
        }
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   581
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   582
        let mut sum = 0;
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   583
        manager.iter().run(|(d,): (&Datum,)| sum += d.value);
15389
445138f388d4 expand iteration implementation to larger tuples
alfadur
parents: 15388
diff changeset
   584
        assert_eq!(sum, 15);
15380
b5e0a39856fd complete basic ecs
alfadur
parents: 15379
diff changeset
   585
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   586
        manager.iter().run(|(d,): (&mut Datum,)| d.value += 1);
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   587
        manager.iter().run(|(d,): (&Datum,)| sum += d.value);
15389
445138f388d4 expand iteration implementation to larger tuples
alfadur
parents: 15388
diff changeset
   588
        assert_eq!(sum, 35);
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   589
    }
15392
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   590
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   591
    #[test]
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   592
    fn tagged_component_iteration() {
15392
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   593
        let mut manager = GearDataManager::new();
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   594
        manager.register::<Datum>();
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   595
        manager.register::<Tag>();
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   596
        for i in 1..=10 {
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   597
            let gear_id = GearId::new(i as u16).unwrap();
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   598
            manager.add(gear_id, &Datum { value: i });
15396
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   599
        }
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   600
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   601
        for i in 1..=10 {
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   602
            let gear_id = GearId::new(i as u16).unwrap();
15392
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   603
            if i & 1 == 0 {
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   604
                manager.add_tag::<Tag>(gear_id);
15392
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   605
            }
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   606
        }
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   607
15396
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   608
        let mut sum = 0;
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   609
        manager.iter().run(|(d,): (&Datum,)| sum += d.value);
15396
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   610
        assert_eq!(sum, 55);
37b632d38f14 properly update gear id lookup on block modifications
alfadur
parents: 15394
diff changeset
   611
15413
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   612
        let mut tag_sum = 0;
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   613
        manager
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   614
            .iter()
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   615
            .with_tags::<&Tag>()
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   616
            .run(|(d,): (&Datum,)| tag_sum += d.value);
b387a51705ac implement iteration with tags
alfadur
parents: 15408
diff changeset
   617
        assert_eq!(tag_sum, 30);
15392
24a9afbf33c6 add multicomponent iteration test
alfadur
parents: 15390
diff changeset
   618
    }
15375
dff37ac61dcf convert ecs storage to untyped
alfadur
parents: 15326
diff changeset
   619
}