diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..344031f --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,9 @@ +[package] +name = "Rustbg" +version = "0.1.0" +edition = "2021" + +[dependencies] +term_size = "0.3.2" +rand = "0.9.0-alpha.2" +ansi-escapes = "0.2.0" diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..23d3b97 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,200 @@ +mod noise; +use term_size; +use std::{thread, time::Duration}; +use ansi_escapes; +use rand::random; +// fn noise_to_ascii(value: f64) -> char { +// const ASCII_CHARS: &str = " .-=+*#%@"; +// let index = ((value + 1.0) / 2.0 * (ASCII_CHARS.len() - 1) as f64).round() as usize; +// ASCII_CHARS.chars().nth(index).unwrap() +// } +// +// fn main() { +// let width; +// let height; +// +// if let Some((w, h)) = term_size::dimensions() { +// width = w; +// height = h; +// } else { +// println!("Unable to get term size :("); +// return; +// } +// +// let perlin = noise::PerlinNoise::new(); +// let scale = 0.1; +// +// for y in 0..height { +// for x in 0..width { +// let value = perlin.noise(x as f64 * scale, y as f64 * scale, 0.0); +// let ascii_char = noise_to_ascii(value); +// print!("{}", ascii_char); +// } +// println!(); +// } +// } + +const HEXAGON_STRING: [&str; 4] = [ +" ┏┛ ┗┓ ", +"━━━┫ ┣━━━", +" ┗┓ ┏┛ ", +" ┣━━━━━━┫ " +]; + +const SQUARES: [&str; 5] = [ +"%───────", +"│ ", +"│ ", +"│ ", +"│ ", +]; + +const SQUARE_REMOVER: [&str; 5] = [ + "........", + ". ", + ". ", + ". ", + ". ", +]; + +const TRIANGLES: [&str; 3] = [ + " . ", + ". .", + ".. ", +]; + +fn hexagon(x: i16, y: i16) -> String { + let xindex: usize = (x % 16) as usize; + let yindex: usize = (y % 4) as usize; + let c: String = HEXAGON_STRING[yindex].chars().nth(xindex).unwrap().into(); + // if c.is_none() {return ".".into();} + if c == " " {return ansi_escapes::CursorMove::X(1).to_string()}; + return c; +} + +fn squares(x: i16, y: i16) -> String { + let xindex: usize = (x % 8) as usize; + let yindex: usize = (y % 5) as usize; + let c: String = SQUARES[yindex].chars().nth(xindex).unwrap().into(); + // if c.is_none() {return ".".into();} + if c == " " {return ansi_escapes::CursorMove::X(1).to_string()}; + return c; +} +fn squares_2(x: i16, y: i16) -> String { + let xindex: usize = (x % 8) as usize; + let yindex: usize = (y % 5) as usize; + let c: String = SQUARE_REMOVER[yindex].chars().nth(xindex).unwrap().into(); + // if c.is_none() {return ".".into();} + if c == " " {return ansi_escapes::CursorMove::X(1).to_string()}; + if c == "." {return "".into()}; + return c; +} + + +fn triangles(x: i16, y: i16) -> String { + let xindex: usize = (x % 3) as usize; + let yindex: usize = (y % 3) as usize; + let c: String = TRIANGLES[yindex].chars().nth(xindex).unwrap().into(); + // if c.is_none() {return ".".into();} + if c == " " {return ansi_escapes::CursorMove::X(1).to_string()}; + return c; +} + +// fn number(value: f64, x: i16, y: i16) -> String { +// const TEXT: &str = " .-*%#"; +// let index: usize = ((value + 1.0) / 2.0 * (TEXT.len() - 1) as f64).round() as usize; +// return TEXT.chars().nth(index).unwrap().into(); +// +// } + + + + +fn noise_to_ascii(value: f64, x: i16, y:i16) -> String { + const options_length: i32 = 6; + let index = ((value + 1.0) / 2.0 * (options_length - 1) as f64).round() as usize; + match index { + 0 => return hexagon(x, y), + 1 => return hexagon(x, y), + 2 => return triangles(x,y), + 3 => return squares(x, y), + 4 => return squares_2(x, y), + 5 => return squares_2(x, y), + _ => {return "e".into() } + } + + +} + +fn abs(value: f64) -> f64 { + if(value < 0.){ + return -value; + } + return value; +} + +fn sign(value: f64) -> i8 { + if(value > 0.){ + return 1; + }else if(value < 0.){ + return -1; + } + return 0; +} + +fn randInc() -> i8{ + let tmp:f64 = (random::()*2.)-1.; + if abs(tmp) > 0.95 { + return sign(tmp); + } + return 0 +} + +fn main() { + let width; + let height; + + if let Some((w, h)) = term_size::dimensions() { + width = w; + height = h; + } else { + println!("Unable to get term size :("); + return; + } + + // for y in 0 ..height { + // for x in 0..width { + // } + // println!(); + // } + let perlin = noise::PerlinNoise::new(); + let scale = 0.1; + let time_scale = 0.02; + let mut time = 0.0; + + let mut xoffset:i16 = 0; + let mut yoffset:i16 = 0; + + loop { + // print!("{}", ansi_escapes::ClearScreen); + // print!("{}", ansi_escapes::CursorTo::AbsoluteXY(0, 0)); + // xoffset += randInc() as i16; + // yoffset += randInc() as i16; + + // println!("{}", ((2. * random::() - 1.)).round()); + + for y in 0..height { + print!("{}", ansi_escapes::CursorTo::AbsoluteXY(0, y as u16)); + for x in 0..width { + let value = perlin.noise(x as f64 * scale, y as f64 * scale, time); + print!("{}", noise_to_ascii(value, (x as i16 + xoffset) % width as i16, (y as i16 + yoffset) % height as i16)); + + + } + // println!(); + } + + time += time_scale; + thread::sleep(Duration::from_millis(50)); + } +} \ No newline at end of file diff --git a/src/noise.rs b/src/noise.rs new file mode 100644 index 0000000..874ab8e --- /dev/null +++ b/src/noise.rs @@ -0,0 +1,114 @@ +use rand::Rng; +use std::{thread, time::Duration}; + +const PERMUTATION: [u8; 256] = [ + 151, 160, 137, 91, 90, 15, 131, 13, 201, 95, 96, 53, 194, 233, 7, 225, 140, 36, 103, 30, 69, + 142, 8, 99, 37, 240, 21, 10, 23, 190, 6, 148, 247, 120, 234, 75, 0, 26, 197, 62, 94, 252, 219, + 203, 117, 35, 11, 32, 57, 177, 33, 88, 237, 149, 56, 87, 174, 20, 125, 136, 171, 168, 68, 175, + 74, 165, 71, 134, 139, 48, 27, 166, 77, 146, 158, 231, 83, 111, 229, 122, 60, 211, 133, 230, + 220, 105, 92, 41, 55, 46, 245, 40, 244, 102, 143, 54, 65, 25, 63, 161, 1, 216, 80, 73, 209, + 76, 132, 187, 208, 89, 18, 169, 200, 196, 135, 130, 116, 188, 159, 86, 164, 100, 109, 198, + 173, 186, 3, 64, 52, 217, 226, 250, 124, 123, 5, 202, 38, 147, 118, 126, 255, 82, 85, 212, + 207, 206, 59, 227, 47, 16, 58, 17, 182, 189, 28, 42, 223, 183, 170, 213, 119, 248, 152, 2, + 44, 154, 163, 70, 221, 153, 101, 155, 167, 43, 172, 9, 129, 22, 39, 253, 19, 98, 108, 110, + 79, 113, 224, 232, 178, 185, 112, 104, 218, 246, 97, 228, 251, 34, 242, 193, 238, 210, 144, + 12, 191, 179, 162, 241, 81, 51, 145, 235, 249, 14, 239, 107, 49, 192, 214, 31, 181, 199, 106, + 157, 184, 84, 204, 176, 115, 121, 50, 45, 127, 4, 150, 254, 138, 236, 205, 93, 222, 114, 67, + 29, 24, 72, 243, 141, 128, 195, 78, 66, 215, 61, 156, 180, +]; + +pub(crate) struct PerlinNoise { + p: [u8; 512], +} + +impl PerlinNoise { + pub(crate) fn new() -> Self { + let mut rng = rand::thread_rng(); + let mut p = [0; 512]; + for i in 0..256 { + p[i] = i as u8; + } + for i in 0..256 { + let j = rng.gen_range(0..256); + p.swap(i, j); + } + for i in 0..256 { + p[i + 256] = p[i]; + } + PerlinNoise { p } + } + + fn fade(t: f64) -> f64 { + t * t * t * (t * (t * 6.0 - 15.0) + 10.0) + } + + fn lerp(t: f64, a: f64, b: f64) -> f64 { + a + t * (b - a) + } + + fn grad(hash: u8, x: f64, y: f64, z: f64) -> f64 { + let h = hash & 15; + let u = if h < 8 { x } else { y }; + let v = if h < 4 { + y + } else if h == 12 || h == 14 { + x + } else { + z + }; + let s = if (h & 1) == 0 { 1.0 } else { -1.0 }; + let t = if (h & 2) == 0 { 1.0 } else { -1.0 }; + s * u + t * v + } + + pub fn noise(&self, x: f64, y: f64, z: f64) -> f64 { + let xi = x.floor() as usize & 255; + let yi = y.floor() as usize & 255; + let zi = z.floor() as usize & 255; + + let x = x - x.floor(); + let y = y - y.floor(); + let z = z - z.floor(); + + let u = Self::fade(x); + let v = Self::fade(y); + let w = Self::fade(z); + + let a = self.p[xi] as usize + yi; + let aa = self.p[a] as usize + zi; + let ab = self.p[a + 1] as usize + zi; + let b = self.p[xi + 1] as usize + yi; + let ba = self.p[b] as usize + zi; + let bb = self.p[b + 1] as usize + zi; + + Self::lerp( + w, + Self::lerp( + v, + Self::lerp( + u, + Self::grad(self.p[aa], x, y, z), + Self::grad(self.p[ba], x - 1.0, y, z), + ), + Self::lerp( + u, + Self::grad(self.p[ab], x, y - 1.0, z), + Self::grad(self.p[bb], x - 1.0, y - 1.0, z), + ), + ), + Self::lerp( + v, + Self::lerp( + u, + Self::grad(self.p[aa + 1], x, y, z - 1.0), + Self::grad(self.p[ba + 1], x - 1.0, y, z - 1.0), + ), + Self::lerp( + u, + Self::grad(self.p[ab + 1], x, y - 1.0, z - 1.0), + Self::grad(self.p[bb + 1], x - 1.0, y - 1.0, z - 1.0), + ), + ), + ) + } +}