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Correctly set the initial offset value in init()

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This commit is contained in:
Gwilym Kuiper 2022-02-07 21:30:52 +00:00
parent a998ae31a4
commit 610be70b92
2 changed files with 6 additions and 8 deletions
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12
agb/src/display/background.rs
View file

@ -396,10 +396,10 @@ impl RegularMap {
let x_scroll = scroll_pos.x % (32 * 8) as u16; let x_scroll = scroll_pos.x % (32 * 8) as u16;
let y_scroll = scroll_pos.y % (32 * 8) as u16; let y_scroll = scroll_pos.y % (32 * 8) as u16;
let start_x = x_scroll / 8; let start_x = x_scroll / 8;
let end_x = (x_scroll + display::WIDTH as u16 + 8 - 1) / 8 + 1; // divide by 8 rounding up let end_x = div_ceil(x_scroll as i32 + display::WIDTH, 8) as u16 + 1; // divide by 8 rounding up
let start_y = y_scroll / 8; let start_y = y_scroll / 8;
let end_y = (y_scroll + display::HEIGHT as u16 + 8 - 1) / 8 + 1; let end_y = div_ceil(y_scroll as i32 + display::HEIGHT, 8) as u16 + 1;
for y in start_y..end_y { for y in start_y..end_y {
for x in start_x..end_x { for x in start_x..end_x {
@ -489,7 +489,7 @@ impl<'a> InfiniteScrolledMap<'a> {
.into(); .into();
self.map.set_scroll_pos(offset_scroll); self.map.set_scroll_pos(offset_scroll);
self.offset = pos * -1; self.offset = (x_start, y_start).into();
} }
pub fn set_pos(&mut self, vram: &mut VRamManager, new_pos: Vector2D<i32>) { pub fn set_pos(&mut self, vram: &mut VRamManager, new_pos: Vector2D<i32>) {
@ -555,8 +555,6 @@ impl<'a> InfiniteScrolledMap<'a> {
Rect::new((0i32, 0).into(), (0i32, 0).into()) Rect::new((0i32, 0).into(), (0i32, 0).into())
}; };
let tile_offset = Vector2D::new(div_floor(self.offset.x, 8), div_floor(self.offset.y, 8));
for (tile_x, tile_y) in vertical_rect_to_update for (tile_x, tile_y) in vertical_rect_to_update
.iter() .iter()
.chain(horizontal_rect_to_update.iter()) .chain(horizontal_rect_to_update.iter())
@ -566,8 +564,8 @@ impl<'a> InfiniteScrolledMap<'a> {
self.map.set_tile( self.map.set_tile(
vram, vram,
( (
(tile_x + tile_offset.x).rem_euclid(32) as u16, (tile_x - self.offset.x).rem_euclid(32) as u16,
(tile_y + tile_offset.y).rem_euclid(32) as u16, (tile_y - self.offset.y).rem_euclid(32) as u16,
) )
.into(), .into(),
tile_set_ref, tile_set_ref,

2
examples/the-hat-chooses-the-wizard/src/main.rs
View file

@ -806,7 +806,7 @@ fn main(mut agb: agb::Gba) -> ! {
let mut music_box = sfx::MusicBox::new(); let mut music_box = sfx::MusicBox::new();
let vblank = agb::interrupt::VBlank::get(); let vblank = agb::interrupt::VBlank::get();
let mut current_level = 8; let mut current_level = 10;
loop { loop {
if current_level == map_tiles::LEVELS.len() as u32 { if current_level == map_tiles::LEVELS.len() as u32 {