63 lines
1.6 KiB
Rust
63 lines
1.6 KiB
Rust
use macroquad::{prelude::*, rand::gen_range};
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#[derive(Default)]
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pub struct Asteroid {
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pub pos: Vec2,
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vel: Vec2,
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sides: u8,
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radius: f32,
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rot: f32,
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omega: f32,
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}
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impl Asteroid {
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pub fn new() -> Self {
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let radius = gen_range(30., 50.);
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let mut r = vec2(
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if gen_range(0., 1.) > 0.5 { -1. } else { 1. },
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gen_range(-1., 1.),
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);
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if gen_range(0., 1.) > 0.5 {
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r = vec2(r.y, r.x);
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}
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r *= vec2(
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screen_width() * 0.5 + radius,
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screen_height() * 0.5 + radius,
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);
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Self {
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pos: r,
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vel: 0.04 * -r
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+ vec2(
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gen_range(20., 60.) * if gen_range(0., 1.) > 0.5 { -1. } else { 1. },
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gen_range(20., 60.) * if gen_range(0., 1.) > 0.5 { -1. } else { 1. },
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),
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sides: gen_range(3, 8),
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radius: radius,
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omega: gen_range(50., 200.) * if gen_range(0., 1.) > 0.5 { -1. } else { 1. },
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..Default::default()
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}
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}
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pub fn update(&mut self) {
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self.pos += self.vel * get_frame_time();
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self.rot += self.omega * get_frame_time();
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}
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pub fn is_visible(&self) -> bool {
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self.pos.y.abs() < screen_height() * 0.51 + self.radius
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&& self.pos.x.abs() < screen_width() * 0.51 + self.radius
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}
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pub fn draw(&self) {
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draw_poly_lines(
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self.pos.x,
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self.pos.y,
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self.sides,
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self.radius,
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self.rot,
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2.,
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WHITE,
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);
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}
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}
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