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#![no_std] | ||
#![no_main] | ||
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use agb::{ | ||
display::{ | ||
affine::AffineMatrix, | ||
object::{ | ||
AffineMatrixInstance, AffineMode, ObjectTextRender, ObjectUnmanaged, PaletteVram, Size, | ||
SpriteVram, TextAlignment, | ||
}, | ||
palette16::Palette16, | ||
Font, HEIGHT, WIDTH, | ||
}, | ||
include_font, | ||
}; | ||
use agb_fixnum::{num, Num, Vector2D}; | ||
use alloc::vec::Vec; | ||
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extern crate alloc; | ||
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use core::fmt::Write; | ||
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const FONT: Font = include_font!("examples/font/yoster.ttf", 12); | ||
#[agb::entry] | ||
fn entry(gba: agb::Gba) -> ! { | ||
main(gba); | ||
} | ||
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fn text_objects( | ||
font: &Font, | ||
sprite_size: Size, | ||
palette: PaletteVram, | ||
text_alignment: TextAlignment, | ||
area: Vector2D<i32>, | ||
paragraph_spacing: i32, | ||
arguments: core::fmt::Arguments, | ||
) -> Vec<(SpriteVram, Vector2D<i32>)> { | ||
let mut wr = ObjectTextRender::new(font, sprite_size, palette); | ||
let _ = writeln!(wr, "{}", arguments); | ||
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wr.layout(area, text_alignment, paragraph_spacing); | ||
wr.render_all(); | ||
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wr.letter_groups() | ||
.map(|x| (x.sprite().clone(), x.relative_position())) | ||
.collect() | ||
} | ||
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fn main(mut gba: agb::Gba) -> ! { | ||
let (mut unmanaged, _sprites) = gba.display.object.get_unmanaged(); | ||
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let mut palette = [0x0; 16]; | ||
palette[1] = 0xFF_FF; | ||
palette[2] = 0x00_FF; | ||
let palette = Palette16::new(palette); | ||
let palette = PaletteVram::new(&palette).unwrap(); | ||
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let groups: Vec<_> = text_objects( | ||
&FONT, | ||
Size::S16x16, | ||
palette, | ||
TextAlignment::Center, | ||
(WIDTH, i32::MAX).into(), | ||
0, | ||
format_args!("Woah, ROTATION!"), | ||
) | ||
.into_iter() | ||
.map(|x| (x.0, x.1 - (WIDTH / 2, 0).into() + (8, 4).into())) | ||
.collect(); | ||
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let vblank = agb::interrupt::VBlank::get(); | ||
let mut angle: Num<i32, 8> = num!(0.); | ||
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loop { | ||
angle += num!(0.01); | ||
if angle >= num!(1.) { | ||
angle -= num!(1.); | ||
} | ||
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let rotation_matrix = AffineMatrix::from_rotation(angle); | ||
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let letter_group_rotation_matrix_instance = | ||
AffineMatrixInstance::new(AffineMatrix::from_rotation(-angle).to_object_wrapping()); | ||
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let frame_positions: Vec<_> = groups | ||
.iter() | ||
.map(|x| { | ||
let mat = AffineMatrix::from_translation(x.1.change_base()); | ||
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let mat = rotation_matrix * mat; | ||
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let position = mat.position() + (WIDTH / 2, HEIGHT / 2).into() - (16, 16).into(); | ||
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let mut object = ObjectUnmanaged::new(x.0.clone()); | ||
object.set_affine_matrix(letter_group_rotation_matrix_instance.clone()); | ||
object.show_affine(AffineMode::AffineDouble); | ||
object.set_position(position.floor()); | ||
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object | ||
}) | ||
.collect(); | ||
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vblank.wait_for_vblank(); | ||
let mut oam = unmanaged.iter(); | ||
for (object, oam_slot) in frame_positions.into_iter().zip(&mut oam) { | ||
oam_slot.set(&object); | ||
} | ||
} | ||
} |