Struct gemini_engine::elements::view::Vec2D

source ·

pub struct Vec2D {
    pub x: isize,
    pub y: isize,
}

Expand description

A pair of isize used for coordinates, size or direction on a 2D plane

Fields§

§x: isize§y: isize

Implementations§

source §

impl Vec2D

source

pub const ZERO: Vec2D = _

A Vec2D of (0,0)

source

pub const fn new(x: isize, y: isize) -> Self

Create a new Vec2D value from two isize values

Examples found in repository ?

examples/multi-movement.rs (line 15)

const BLOCK_SIZE: Vec2D = Vec2D::new(4, 2);
const FILL_CHAR: ColChar = ColChar::SOLID;

fn main() {
    let mut view = View::new(50, 12, ColChar::BACKGROUND);

    let mut blocks = vec![
        Rect::new(Vec2D::new(0, 0), BLOCK_SIZE, FILL_CHAR),
        Rect::new(Vec2D::new(0, 2), BLOCK_SIZE, FILL_CHAR),
        Rect::new(Vec2D::new(0, 4), BLOCK_SIZE, FILL_CHAR),
        Rect::new(Vec2D::new(0, 6), BLOCK_SIZE, FILL_CHAR),
        Rect::new(Vec2D::new(0, 8), BLOCK_SIZE, FILL_CHAR),
        Rect::new(Vec2D::new(0, 10), BLOCK_SIZE, FILL_CHAR),
    ];

    let mut i = 0;
    fps_gameloop!(
        {
            i += 1;
            for (j, block) in blocks.iter_mut().enumerate() {
                if i % 2_u32.pow(j as u32) == 0 {
                    block.pos.x += 1;
                }
            }
        },
        {
            view.clear();
            for block in &blocks {
                view.blit(block, Wrapping::Wrap);
            }
            view.display_render().unwrap();

            if blocks.iter().all(|b| b.pos.x % view.width as isize == 0) {
                thread::sleep(Duration::from_secs(2));
            };
        },
        200.0
    );
}

More examples

Hide additional examples

examples/complex-scene.rs (line 18)

fn main() {
    let mut view = View::new(60, 10, BACKGROUND_CHAR);
    view.coord_numbers_in_render = true;

    let mut point = Point::new(Vec2D::from((5u8, 9u8)), FILL_CHAR);

    let mut line = Line::new(Vec2D::new(2, 8), Vec2D::new(28, 7), FILL_CHAR);
    let mut line1_direction = -1;

    let rect = Rect::new(
        Vec2D { x: 11, y: 1 },
        Vec2D { x: 9, y: 3 },
        ColChar::SOLID.with_rgb(200, 30, 0),
    );

    let test_image = r"
  ______
 /|_||_\`.__
(   _    _ _\
=`-(_)--(_)-'   ";
    let mut sprite = Sprite::new(
        Vec2D::new(30, 1),
        test_image,
        Modifier::from_rgb(20, 200, 0),
    );

    let mut blit_elapsed = Duration::default();
    let mut render_elapsed = Duration::default();
    fps_gameloop!(
        {
            point.pos.x += 2;
            // loop the position back to the other side. This can be done with `Wrapping::Wrap` but it won't change the element's actual position, so the point position being printed would continue to increase without looping
            point.pos %= view.size();

            line.pos1.y += line1_direction;
            line.pos0.y = 10 - line.pos1.y;
            if line.pos1.y > 7 {
                line1_direction = -1;
            } else if line.pos1.y < 3 {
                line1_direction = 1;
            }

            sprite.pos.x += 1;
        },
        {
            view.clear();

            let now = Instant::now();
            view.blit(&point, Wrapping::Panic);
            view.blit(&line, Wrapping::Panic);
            view.blit(&rect, Wrapping::Panic);
            view.blit(&sprite, Wrapping::Wrap);
            blit_elapsed = now.elapsed();

            let now = Instant::now();
            view.display_render().unwrap();
            render_elapsed = now.elapsed();
        },
        FPS,
        |total_elapsed: Duration, _frame_skip| {
            println!(
                "Blitting: {:.2?} microseconds | Rendering: {:.2?} microseconds| Total: {:.2?}",
                blit_elapsed.as_micros(),
                render_elapsed.as_micros(),
                total_elapsed.as_micros()
            );
            println!("Point position: {}", point.pos);
        }
    );
}