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87 lines
3.0 KiB
87 lines
3.0 KiB
use sfml::graphics::*;
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use sfml::system::Vector2f;
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use sfml::SfBox;
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pub struct NumberRenderer {
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texture: SfBox<Texture>,
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comma_rect: IntRect,
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numeral_rects: [IntRect; 10],
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}
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impl NumberRenderer {
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pub fn new(texture: SfBox<Texture>, comma_rect: IntRect, numeral_rects: [IntRect; 10]) -> Self {
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Self {
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texture,
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comma_rect,
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numeral_rects,
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}
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}
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pub fn default() -> Self {
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Self::new(
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Texture::from_file(&crate::texture("numerals")).unwrap(),
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IntRect::new(134, 0, 10, 16),
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[
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IntRect::new(0, 0, 14, 16),
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IntRect::new(14, 0, 8, 16),
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IntRect::new(22, 0, 14, 16),
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IntRect::new(36, 0, 14, 16),
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IntRect::new(50, 0, 14, 16),
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IntRect::new(64, 0, 14, 16),
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IntRect::new(78, 0, 14, 16),
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IntRect::new(92, 0, 14, 16),
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IntRect::new(106, 0, 14, 16),
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IntRect::new(120, 0, 14, 16),
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],
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)
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}
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pub fn render(&self, window: &mut RenderWindow, number: u32, x: u32, y: u32) {
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let number_string = number.to_string();
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let get_numeral_rect =
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|numeral: char| self.numeral_rects[numeral.to_digit(10).unwrap() as usize];
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let mut numeral_position = Vector2f::new(
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{
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let numeral = number_string.chars().last().unwrap();
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let numeral_rect = get_numeral_rect(numeral);
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x as f32 - numeral_rect.width as f32
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},
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y as f32,
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);
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let digits = number_string.len();
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let mut sprite = Sprite::new();
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sprite.set_texture(&self.texture, false);
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// can't reverse .chars() directly since it doesn't implement std::iter::DoubleEndedIterator
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// Instead, we must collect it to a Vec then iterate over that.
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// For more info, see https://users.rust-lang.org/t/43401/2
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for (i, numeral) in number_string
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.chars()
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.collect::<Vec<char>>()
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.iter()
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.enumerate()
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.rev()
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{
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let numeral_rect = get_numeral_rect(*numeral);
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if (digits - i) % 3 == 1 && i != digits - 1 {
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sprite.set_texture_rect(&self.comma_rect);
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sprite.set_position(numeral_position);
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window.draw(&sprite);
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numeral_position.x -= numeral_rect.width as f32;
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}
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sprite.set_texture_rect(&numeral_rect);
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sprite.set_position(numeral_position);
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window.draw(&sprite);
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if i == 0 {
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break;
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}
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if (digits - i) % 3 == 0 {
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numeral_position.x -= self.comma_rect.width as f32;
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continue;
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}
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let numeral = number_string.as_bytes()[i - 1] as char;
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let numeral_rect = get_numeral_rect(numeral);
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numeral_position.x -= numeral_rect.width as f32;
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}
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}
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}
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