172 lines
4.9 KiB
Rust
172 lines
4.9 KiB
Rust
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use sdl2::render::Canvas;
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use sdl2::pixels::Color;
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use sdl2::video::Window;
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use sdl2::rect::Rect;
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use std::cmp;
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use std::{thread, time};
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use std::time::{Duration, SystemTime};
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pub const SCREEN_SIZE: u32 = 800;
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pub const PX_SIZE: u32 = 2;
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pub const BLACK: Color = Color::RGB(0, 0, 0);
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pub const WHITE: Color = Color::RGB(255, 255, 255);
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pub trait Cell {
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fn color(&self) -> [f32; 4];
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}
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#[derive(Clone)]
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pub struct ConwayCell {
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color: Color,
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alive: bool,
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}
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/*
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impl Cell {
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pub fn clone(&self) -> Cell {
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Cell{color: self.color}
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}
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}*/
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pub struct App {
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steps_per_sec: u64,
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px_size: i32,
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grid: Vec<Vec<ConwayCell>>,
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canvas: Canvas<Window>,
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}
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impl App {
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fn render (&mut self) {
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self.canvas.set_draw_color(Color::RGB(0, 0, 0));
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self.canvas.clear();
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for y in 0..self.grid.len() {
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for x in 0..self.grid[y].len() {
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if self.grid[y][x].alive {
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self.canvas.set_draw_color(self.grid[y][x].color);
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self.canvas.fill_rect(Rect::new(x as i32 * self.px_size , y as i32 * self.px_size, self.px_size as u32, self.px_size as u32));
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}
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}
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}
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/*
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for (y, row) in grid.iter().enumerate() {
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for (x, cell) in row.iter().enumerate() {
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rectangle( cell.color, rectangle::square((x as u32 * px_size) as f64, (y as u32 * px_size) as f64, px_size as f64), c.transform, gl)
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}
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}*/
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self.canvas.present();
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}
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fn evolve(&mut self) {
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let mut new_grid = vec![vec![ConwayCell{color: BLACK, alive: false}; self.grid.len()]; self.grid.len()];
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for y in 0..self.grid.len() {
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for x in 0..self.grid[y].len() {
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let mut nalive = 0;
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let mut ylow = 0;
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if y > 1 {
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ylow = y-1;
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}
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let yhigh = cmp::min(self.grid.len()-1, y+1);
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let mut xlow = 0;
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if x > 1 {
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xlow = x-1;
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}
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let xhigh = cmp::min(self.grid.len()-1, x+1);
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for i in ylow..yhigh+1 {
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for j in xlow..xhigh+1 {
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if i == y && j == x {
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continue;
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}
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if self.grid[i][j].alive {
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nalive += 1;
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}
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}
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}
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if self.grid[y][x].alive {
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if nalive == 2 || nalive == 3 {
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new_grid[y][x] = ConwayCell{color: WHITE, alive: true}
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}
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} else if nalive == 3 {
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new_grid[y][x] = ConwayCell{color: WHITE, alive: true}
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}
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}
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}
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self.grid = new_grid;
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}
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}
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fn main() {
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let sdl_context = sdl2::init().unwrap();
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let video_subsystem = sdl_context.video().unwrap();
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let window = video_subsystem.window("Microworlds", SCREEN_SIZE, SCREEN_SIZE).build().unwrap();
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let size: usize = (SCREEN_SIZE/PX_SIZE) as usize;
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let mut grid = vec![vec![ConwayCell{color: BLACK, alive: false}; size]; size];
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println!("size:{}", size);
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// r pemento
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let centery = size/2;
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let centerx = size/2;
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println!("centery:{} centerx:{}", centery, centerx);
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grid[centery][centerx] = ConwayCell{color: WHITE, alive: true};
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grid[centery+1][centerx] = ConwayCell{color: WHITE, alive: true};
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grid[centery-1][centerx] = ConwayCell{color: WHITE, alive: true};
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grid[centery-1][centerx-1] = ConwayCell{color: WHITE, alive: true};
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grid[centery][centerx+1] = ConwayCell{color: WHITE, alive: true};
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// Let's create a Canvas which we will use to draw in our Window
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let canvas : Canvas<Window> = window.into_canvas()
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.present_vsync() //< this means the screen cannot
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// render faster than your display rate (usually 60Hz or 144Hz)
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.build().unwrap();
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let mut app = App {
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steps_per_sec: 32,
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px_size: PX_SIZE as i32,
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grid: grid,
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canvas: canvas,
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};
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let mut frame = 0;
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let mut event_pump = sdl_context.event_pump().unwrap();
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'main: loop {
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for event in event_pump.poll_iter() {
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match event {
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sdl2::event::Event::Quit {..} => break 'main,
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_ => {},
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}
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}
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let start_rend = SystemTime::now();
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app.render();
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let render_time = start_rend.elapsed().unwrap();
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let start_evo = SystemTime::now();
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app.evolve();
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let evo_time = start_evo.elapsed().unwrap();
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let total_time = start_rend.elapsed().unwrap();
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frame += 1;
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println!("frame: {} - render time: {:?} | evolve time: {:?} | total time: {:?}", frame, render_time, evo_time, total_time);
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thread::sleep(time::Duration::from_millis(1000 / app.steps_per_sec));
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}
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}
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