New Example - Simple Physics Simulation (Confetti) #874
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A super simple 2D simulation where balls fall and bounce off each other. Click to spawn new balls.
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Please run |
Andrew-McCall
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Apologies for the delay, Thanks! |
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| use macroquad::prelude::*; | |||
| extern crate micromath; | |||
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This crate is not part of the macroquad dependency tree. I tried running the program without this line and the line below and it worked fine though, so this should be removable.
| const BALL_RADIUS: f32 = 5.0; | ||
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| // Please, don't change | ||
| static mut BALL_ID: usize = 0; |
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You can use an AtomicUsize here to avoid using the unsafe static mut:
static BALL_ID: AtomicUsize = AtomicUsize::new(0);
| unsafe { | ||
| id = BALL_ID; | ||
| BALL_ID += 1; | ||
| } |
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With an atomic as above, this is just let id = BALL_ID.fetch_add(1, Ordering::SeqCst);.
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| fn collide(&mut self, balls: &[Ball]) { | ||
| unsafe { | ||
| let skip = (BALL_ID / 1000).max(8); |
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BALL_ID.load(Ordering::SeqCst) instead of unsafe.
| unsafe { | ||
| BALL_ID = 0; | ||
| balls.clear(); | ||
| } |
| } | ||
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| unsafe { | ||
| if BALL_ID == 0 { |
| x_vel, | ||
| y_vel: 0.0, | ||
| color: Color::from_rgba( | ||
| (random as usize * 47 % 255) as u8, |
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random is already an usize though?
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Thanks. I updated my code on my main and i pulled it over after fmt. |
PR to add an interactive 2D physics example to the example games.
Confetti is a super simple simulation where balls fall and collide with each other. Players Click to spawn new balls.
You can find my ReadMe with more instructions and description. Only uses std:u8 (Color) and Macroquad.
Confetti Repo (Written by me 31/12/24 and MIT)
A fun example I made to compare rust to a friend's python code. You can rename it as you see fit; I thought the balls looked like confetti (Runs smoothly with 5k balls).