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Simplify tiled0-2

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This commit is contained in:
Gwilym Kuiper 2022-08-11 20:51:15 +01:00
parent d59e2672c0
commit 31f85cf6b9
4 changed files with 36 additions and 33 deletions
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27
agb/src/display/tiled/mod.rs
View file

@ -210,15 +210,21 @@ pub(self) fn find_screenblock_gap(screenblocks: &Bitarray<1>, gap: usize) -> usi
);
}
pub(self) trait TiledMode {
const REGULAR_BACKGROUNDS: usize;
const AFFINE_BACKGROUNDS: usize;
trait TiledMode {
fn screenblocks(&self) -> &RefCell<Bitarray<1>>;
}
trait CreatableRegularTiledMode: TiledMode {
const REGULAR_BACKGROUNDS: usize;
fn regular(&self) -> &RefCell<Bitarray<1>>;
}
trait CreatableAffineTiledMode: TiledMode {
const AFFINE_BACKGROUNDS: usize;
fn affine(&self) -> &RefCell<Bitarray<1>>;
}
pub trait RegularTiledMode {
trait RegularTiledMode {
fn regular_background(
&self,
priority: Priority,
@ -226,7 +232,7 @@ pub trait RegularTiledMode {
) -> MapLoan<'_, RegularMap>;
}
pub trait AffineTiledMode {
trait AffineTiledMode {
fn affine_background(
&self,
priority: Priority,
@ -234,15 +240,9 @@ pub trait AffineTiledMode {
) -> MapLoan<'_, AffineMap>;
}
// withoutboats: https://internals.rust-lang.org/t/const-generics-where-restrictions/12742/6
pub struct If<const B: bool>;
pub trait True {}
impl True for If<true> {}
impl<T> RegularTiledMode for T
where
T: TiledMode,
If<{ T::REGULAR_BACKGROUNDS > 0 }>: True,
T: CreatableRegularTiledMode,
{
fn regular_background(
&self,
@ -283,8 +283,7 @@ where
impl<T> AffineTiledMode for T
where
T: TiledMode,
If<{ T::AFFINE_BACKGROUNDS > 0 }>: True,
T: CreatableAffineTiledMode,
{
fn affine_background(
&self,

16
agb/src/display/tiled/tiled0.rs
View file

@ -1,6 +1,9 @@
use core::cell::RefCell;
use super::{MapLoan, RegularBackgroundSize, RegularMap, RegularTiledMode, TiledMode};
use super::{
CreatableRegularTiledMode, MapLoan, RegularBackgroundSize, RegularMap, RegularTiledMode,
TiledMode,
};
use crate::{
bitarray::Bitarray,
display::{set_graphics_mode, DisplayMode, Priority},
@ -31,18 +34,15 @@ impl Tiled0 {
}
impl TiledMode for Tiled0 {
const REGULAR_BACKGROUNDS: usize = 4;
const AFFINE_BACKGROUNDS: usize = 0;
fn screenblocks(&self) -> &RefCell<Bitarray<1>> {
&self.screenblocks
}
}
impl CreatableRegularTiledMode for Tiled0 {
const REGULAR_BACKGROUNDS: usize = 4;
fn regular(&self) -> &RefCell<Bitarray<1>> {
&self.regular
}
fn affine(&self) -> &RefCell<Bitarray<1>> {
unimplemented!()
}
}

13
agb/src/display/tiled/tiled1.rs
View file

@ -1,6 +1,6 @@
use core::cell::RefCell;
use super::TiledMode;
use super::{CreatableAffineTiledMode, CreatableRegularTiledMode, TiledMode};
use crate::{
bitarray::Bitarray,
display::{set_graphics_mode, tiled::AFFINE_BG_ID_OFFSET, DisplayMode},
@ -30,16 +30,21 @@ impl Tiled1 {
}
impl TiledMode for Tiled1 {
const REGULAR_BACKGROUNDS: usize = 2;
const AFFINE_BACKGROUNDS: usize = 1;
fn screenblocks(&self) -> &RefCell<Bitarray<1>> {
&self.screenblocks
}
}
impl CreatableRegularTiledMode for Tiled1 {
const REGULAR_BACKGROUNDS: usize = 2;
fn regular(&self) -> &RefCell<Bitarray<1>> {
&self.regular
}
}
impl CreatableAffineTiledMode for Tiled1 {
const AFFINE_BACKGROUNDS: usize = 1;
fn affine(&self) -> &RefCell<Bitarray<1>> {
&self.affine

13
agb/src/display/tiled/tiled2.rs
View file

@ -1,6 +1,8 @@
use core::cell::RefCell;
use super::{AffineBackgroundSize, AffineMap, AffineTiledMode, MapLoan, TiledMode};
use super::{
AffineBackgroundSize, AffineMap, AffineTiledMode, CreatableAffineTiledMode, MapLoan, TiledMode,
};
use crate::{
bitarray::Bitarray,
display::{set_graphics_mode, tiled::AFFINE_BG_ID_OFFSET, DisplayMode, Priority},
@ -36,17 +38,14 @@ impl Tiled2 {
}
impl TiledMode for Tiled2 {
const REGULAR_BACKGROUNDS: usize = 0;
const AFFINE_BACKGROUNDS: usize = 2;
fn screenblocks(&self) -> &RefCell<Bitarray<1>> {
&self.screenblocks
}
fn regular(&self) -> &RefCell<Bitarray<1>> {
unimplemented!()
}
impl CreatableAffineTiledMode for Tiled2 {
const AFFINE_BACKGROUNDS: usize = 2;
fn affine(&self) -> &RefCell<Bitarray<1>> {
&self.affine
}