complex_scene/
complex-scene.rs

1//! An example of a more complex scene in Gemini
2use gemini_engine::{
3    ascii::Sprite,
4    core::{ColChar, Modifier, Vec2D},
5    fps_gameloop,
6    primitives::{Line, Pixel, Rect},
7    view::{View, WrappingMode},
8};
9use std::time::Duration;
10
11const FPS: f32 = 20.0;
12const FILL_CHAR: ColChar = ColChar::SOLID;
13const BACKGROUND_CHAR: ColChar = ColChar::EMPTY;
14
15fn main() {
16    let mut view = View::new(60, 10, BACKGROUND_CHAR);
17
18    let mut pixel = Pixel::new(Vec2D::new(5, 9), FILL_CHAR);
19
20    let mut line = Line::new(Vec2D::new(2, 8), Vec2D::new(28, 7), FILL_CHAR);
21    let mut line1_direction = -1;
22
23    let rect = Rect::new(
24        Vec2D { x: 11, y: 1 },
25        Vec2D { x: 9, y: 3 },
26        ColChar::SOLID.with_rgb(200, 30, 0),
27    );
28
29    let test_image = r"
30  ______
31 /|_||_\`.__
32(   _    _ _\
33=`-(_)--(_)-'   ";
34    let mut sprite = Sprite::new(
35        Vec2D::new(30, 1),
36        test_image,
37        Modifier::from_rgb(20, 200, 0),
38    );
39
40    let mut draw_elapsed = Duration::default();
41    let mut render_elapsed = Duration::default();
42    fps_gameloop!(
43        {
44            pixel.pos.x += 2;
45            // loop the position back to the other side. This can be done with `WrappingMode::Wrap` but it won't change the element's actual position, so the pixel position being printed would continue to increase without looping
46            pixel.pos %= view.size();
47
48            line.pos1.y += line1_direction;
49            line.pos0.y = 10 - line.pos1.y;
50            if line.pos1.y > 7 {
51                line1_direction = -1;
52            } else if line.pos1.y < 3 {
53                line1_direction = 1;
54            }
55
56            sprite.pos.x += 1;
57        },
58        {
59            view.clear();
60
61            let now = Instant::now();
62            view.wrapping_mode = WrappingMode::Panic;
63            view.draw(&pixel);
64            view.draw(&line);
65            view.draw(&rect);
66            view.wrapping_mode = WrappingMode::Wrap;
67            view.draw(&sprite);
68            draw_elapsed = now.elapsed();
69
70            let now = Instant::now();
71            let _ = view.display_render();
72            render_elapsed = now.elapsed();
73        },
74        FPS,
75        |total_elapsed: Duration, _frame_skip| {
76            println!(
77                "Drawing: {:.2?} microseconds | Rendering: {:.2?} microseconds| Total: {:.2?}",
78                draw_elapsed.as_micros(),
79                render_elapsed.as_micros(),
80                total_elapsed.as_micros()
81            );
82            println!("Pixel position: {}", pixel.pos);
83        }
84    );
85}
complex_scene/complex-scene.rs

complex_scene/
complex-scene.rs
