subtitled #14: doom fire

Cargo.lock

@@ -1188,6 +1188,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "libm"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7d73b3f436185384286bd8098d17ec07c9a7d2388a6599f824d8502b529702a"
+
 [[package]]
 name = "line_drawing"
 version = "0.7.0"
@@ -1649,6 +1655,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
 dependencies = [
  "autocfg",
+ "libm",
 ]
 
 [[package]]
@@ -2027,6 +2034,16 @@ dependencies = [
  "getrandom 0.2.3",
 ]
 
+[[package]]
+name = "rand_distr"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "051b398806e42b9cd04ad9ec8f81e355d0a382c543ac6672c62f5a5b452ef142"
+dependencies = [
+ "num-traits",
+ "rand 0.8.4",
+]
+
 [[package]]
 name = "rand_hc"
 version = "0.2.0"
@@ -2364,6 +2381,31 @@ dependencies = [
  "utils",
 ]
 
+[[package]]
+name = "subtitled12"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "rand_distr",
+ "utils",
+]
+
+[[package]]
+name = "subtitled13"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
+[[package]]
+name = "subtitled14"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
 [[package]]
 name = "subtitled2"
 version = "0.1.0"

crates/subtitled11/src/main.rs

@@ -109,16 +109,20 @@ fn view(app: &App, model: &Model, frame: Frame) {
             // rotate
             let v = rot(t) * v;
             // project onto xz plane cause it's the coolest one
-            100.0 * vec2(v.x, v.z)
+            50.0 * vec2(v.x + v.y, v.z + v.w)
         })
         .collect::<Vec<_>>();
-    // make all pairs of points
-    let p = p
+
+    for (i, (&a, &b)) in p
         .iter()
         .enumerate()
-        .flat_map(|(i, a)| p[i + 1..].iter().map(move |b| (a, b)));
-    for (&a, &b) in p {
-        draw.line().points(a, b).color(BLACK);
+        // make all pairs of points
+        .flat_map(|(i, a)| p[i + 1..].iter().map(move |b| (a, b)))
+        .enumerate()
+    {
+        if i % 2 != 0 {
+            draw.line().points(a, b).color(BLACK);
+        }
     }
 
     draw.to_frame(app, &frame).unwrap();

crates/subtitled12/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "subtitled12"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+rand_distr = "0.4.1"
+utils = { path = "../utils" }

crates/subtitled12/src/main.rs

@@ -0,0 +1,67 @@
+use nannou::prelude::*;
+use nannou::rand::prelude::*;
+use rand_distr::Normal;
+use utils::*;
+
+fn main() {
+    nannou::app(model).update(update).simple_window(view).run();
+}
+
+struct Model {
+    lines: Vec<Vec<Vec2>>,
+}
+
+fn lines(max_width: f32) -> Vec<Vec<Vec2>> {
+    let normal = Normal::new(0.0, 0.2).unwrap();
+
+    (0..20)
+        .map(|_| {
+            let mut line = vec![Vec2::Y];
+
+            // generate the y coordinates for all points
+            let n = random_range(4, 12);
+            let mut ys = (0..n).map(|_| random_range(-1.0, 1.0)).collect::<Vec<_>>();
+            ys.sort_by(|a, b| b.partial_cmp(a).unwrap());
+
+            // make the actual points and add them to the vec
+            for y in ys {
+                let w = map_range(1.0 - y.abs(), 0.0, 1.0, 0.01, max_width);
+                let x = nannou::rand::thread_rng().sample::<f32, _>(normal) * w;
+                line.push(vec2(x, y));
+            }
+
+            line.push(-Vec2::Y);
+
+            line
+        })
+        .collect()
+}
+
+fn model(_app: &App) -> Model {
+    Model { lines: lines(0.0) }
+}
+
+fn update(app: &App, model: &mut Model, _update: Update) {
+    let t = app.elapsed_frames() as f32 / 60.0;
+
+    if app.elapsed_frames() % 2 == 0 {
+        model.lines = lines(map_sin(t, 0.1, 1.0));
+    }
+}
+
+fn view(app: &App, model: &Model, frame: Frame) {
+    let _t = frame.nth() as f32 / 60.0;
+
+    let draw = app.draw();
+    draw.background().color(BLACK);
+
+    for line in &model.lines {
+        draw.polyline()
+            .stroke_weight(1.0)
+            .points(line.iter().map(|v| *v * 300.0))
+            .color(PINK);
+    }
+
+    draw.to_frame(app, &frame).unwrap();
+    utils::record::record(app, &frame);
+}

crates/subtitled13/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "subtitled13"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+utils = { path = "../utils" }

crates/subtitled13/src/main.rs

@@ -0,0 +1,94 @@
+use nannou::prelude::*;
+use utils::*;
+
+fn main() {
+    nannou::app(model).update(update).simple_window(view).run();
+}
+
+struct Model {
+    walkers: Vec<Vec2>,
+    clustered: Vec<Vec2>,
+}
+
+fn model(_app: &App) -> Model {
+    Model {
+        walkers: (0..5000).map(|_| vec2_range(-1.0, 1.0) * 300.0).collect(),
+        clustered: vec![Vec2::ZERO],
+    }
+}
+
+fn update(app: &App, model: &mut Model, _update: Update) {
+    let _t = app.elapsed_frames() as f32 / 60.0;
+
+    // sort them by x to be a bit more efficient with the collision detection
+    model
+        .clustered
+        .sort_by(|a, b| a.x.partial_cmp(&b.x).unwrap());
+    let clusters = model.clustered.clone();
+
+    let mut to_remove = vec![];
+    for (i, p) in &mut model.walkers.iter_mut().enumerate() {
+        *p += vec2_range(-1.0, 1.0) * 3.5 + 0.5 * vec2(p.y, -p.x).normalize();
+
+        const RAD: f32 = 6.0;
+        for &c in &clusters {
+            // skip the ones outside the x range
+            if c.x < p.x - RAD {
+                continue;
+            }
+            if c.x > p.x + RAD {
+                break;
+            }
+
+            // if it's colliding, make it be a clustered point
+            if p.distance_squared(c) < RAD * RAD {
+                model.clustered.push(*p);
+                to_remove.push(i);
+                break;
+            }
+        }
+    }
+
+    // remove the ones that have become clustered
+    // backwards cause otherwise you shift the indexes
+    for i in to_remove.into_iter().rev() {
+        model.walkers.remove(i);
+    }
+}
+
+fn view(app: &App, model: &Model, frame: Frame) {
+    let t = frame.nth() as f32 / 60.0;
+
+    let draw = app.draw();
+
+    drawing::draw_soft_bg(&draw, app, SNOW, 1.0);
+
+    for &p in &model.clustered {
+        let v = map_sin(t + (p.x.powi(2) + p.y.powi(2) + t) * 0.00003, -20.0, 20.0);
+        let h = (100.0 + v) / 360.0;
+        draw.ellipse().xy(p).radius(4.0).color(hsl(h, 0.5, 0.5));
+    }
+
+    for &p in &model.walkers {
+        draw.ellipse().xy(p).radius(0.0).color(BLACK);
+    }
+    // use nannou::rand::seq::SliceRandom;
+    // let mut rng = nannou::rand::thread_rng();
+    // let n = (frame.nth() as f32 * 0.7) as usize;
+    // for _ in 0..n {
+    //     let a = model.clustered.choose(&mut rng);
+    //     let b = model.clustered.choose(&mut rng);
+    //     if let (Some(&a), Some(&b)) = (a, b) {
+    //         let v = map_sin(t * 2.0 + a.x * a.y, -20.0, 20.0);
+    //         let h = (100.0 + v) / 360.0;
+
+    //         draw.line()
+    //             .stroke_weight(3.0)
+    //             .points(a, b)
+    //             .color(hsla(h, 0.5, 0.5, 0.04));
+    //     }
+    // }
+
+    draw.to_frame(app, &frame).unwrap();
+    utils::record::record(app, &frame);
+}

crates/subtitled14/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "subtitled14"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+utils = { path = "../utils" }

crates/subtitled14/src/main.rs

@@ -0,0 +1,152 @@
+use nannou::prelude::*;
+// use utils::*;
+
+// from https://fabiensanglard.net/doom_fire_psx/
+
+fn main() {
+    nannou::app(model).update(update).simple_window(view).run();
+}
+
+struct Model {
+    fire: Vec<Vec<f32>>,
+    colors: Vec<Rgb8>,
+    uwu: wgpu::Texture,
+}
+
+const WIDTH: usize = 400;
+const HEIGHT: usize = 300;
+const BALL_SIZE: f32 = 3.0;
+
+fn model(app: &App) -> Model {
+    let fire = vec![vec![0.0; WIDTH]; HEIGHT];
+
+    let colors = vec![
+        (0x07, 0x07, 0x07),
+        (0x1F, 0x07, 0x07),
+        (0x2F, 0x0F, 0x07),
+        (0x47, 0x0F, 0x07),
+        (0x57, 0x17, 0x07),
+        (0x67, 0x1F, 0x07),
+        (0x77, 0x1F, 0x07),
+        (0x8F, 0x27, 0x07),
+        (0x9F, 0x2F, 0x07),
+        (0xAF, 0x3F, 0x07),
+        (0xBF, 0x47, 0x07),
+        (0xC7, 0x47, 0x07),
+        (0xDF, 0x4F, 0x07),
+        (0xDF, 0x57, 0x07),
+        (0xDF, 0x57, 0x07),
+        (0xD7, 0x5F, 0x07),
+        (0xD7, 0x5F, 0x07),
+        (0xD7, 0x67, 0x0F),
+        (0xCF, 0x6F, 0x0F),
+        (0xCF, 0x77, 0x0F),
+        (0xCF, 0x7F, 0x0F),
+        (0xCF, 0x87, 0x17),
+        (0xC7, 0x87, 0x17),
+        (0xC7, 0x8F, 0x17),
+        (0xC7, 0x97, 0x1F),
+        (0xBF, 0x9F, 0x1F),
+        (0xBF, 0x9F, 0x1F),
+        (0xBF, 0xA7, 0x27),
+        (0xBF, 0xA7, 0x27),
+        (0xBF, 0xAF, 0x2F),
+        (0xB7, 0xAF, 0x2F),
+        (0xB7, 0xB7, 0x2F),
+        (0xB7, 0xB7, 0x37),
+        (0xCF, 0xCF, 0x6F),
+        (0xDF, 0xDF, 0x9F),
+        (0xEF, 0xEF, 0xC7),
+        (0xFF, 0xFF, 0xFF),
+    ]
+    .into_iter()
+    .map(|c| c.into())
+    .collect();
+
+    let assets = app.assets_path().unwrap();
+    let img_path = assets.join("images").join("blahaj.png");
+    let uwu = wgpu::Texture::from_path(app, img_path).unwrap();
+
+    let mut model = Model { fire, colors, uwu };
+
+    // presimulate fire
+    for _ in 0..400 {
+        advance(app, &mut model);
+    }
+
+    model
+}
+
+fn update(app: &App, model: &mut Model, _update: Update) {
+    let _t = app.elapsed_frames() as f32 / 60.0;
+
+    advance(app, model);
+}
+
+fn advance(app: &App, model: &mut Model) {
+    let (w, h) = app.window_rect().w_h();
+
+    let cols = (w / BALL_SIZE) as usize;
+    let rows = (h / BALL_SIZE) as usize - 50;
+
+    if app.elapsed_frames() > 200 {
+        for i in 0..cols {
+            model.fire[rows][i] = 0.0;
+        }
+    } else {
+        for i in 0..cols {
+            model.fire[rows][i] = 36.0;
+        }
+    }
+
+    for x in 0..cols {
+        for y in 0..rows {
+            let disp = random_range(0, 2);
+            model.fire[y][(x + disp) % cols] = model.fire[y + 1][x] - random_range(0., 1.0);
+        }
+    }
+}
+
+fn view(app: &App, model: &Model, frame: Frame) {
+    let _t = frame.nth() as f32 / 60.0;
+
+    let draw = app.draw();
+    draw.background().color(BLACK);
+
+    draw.texture(&model.uwu)
+        .w_h(400.0, 282.6)
+        .y((-200.0 + frame.nth() as f32).min(0.0));
+
+    let (l, top, w, h) = app.window_rect().l_t_w_h();
+
+    let cols = w / BALL_SIZE;
+    let rows = h / BALL_SIZE;
+
+    for (i, row) in model.fire.iter().enumerate() {
+        for (j, c) in row.iter().enumerate() {
+            let col_index = c.max(0.0).trunc() as usize % model.colors.len();
+
+            if i as f32 <= rows && j as f32 <= cols && col_index != 0 {
+                let x = l + j as f32 * BALL_SIZE;
+                let y = top - i as f32 * BALL_SIZE;
+                let p = vec2(x, y);
+                let r = BALL_SIZE;
+                // * map_range(i as f32, 0 as f32, rows, 0., 1.0)
+                // * random_range(0.9, 1.1);
+
+                draw.quad()
+                    .points(
+                        p + r * vec2(1., 1.),
+                        p + r * vec2(1., -1.),
+                        p + r * vec2(-1., -1.),
+                        p + r * vec2(-1., 1.),
+                    )
+                    .xy(p)
+                    .color(model.colors[col_index]);
+            }
+        }
+    }
+
+    draw.to_frame(app, &frame).unwrap();
+    utils::record::record(app, &frame);
+}

crates/utils/src/drawing.rs

@@ -1,5 +1,17 @@
 use nannou::{color::IntoLinSrgba, draw::properties::ColorScalar, prelude::*};
 
+pub fn draw_soft_bg(draw: &Draw, app: &App, color: impl IntoLinSrgba<ColorScalar>, alpha: f32) {
+    if app.elapsed_frames() <= 1 {
+        draw.background().color(color);
+    } else {
+        let mut color = color.into_lin_srgba();
+        color.alpha = alpha;
+
+        let win = app.window_rect();
+        draw.rect().wh(win.wh()).color(color);
+    }
+}
+
 /// Draws the opposite of a box
 pub fn draw_exterior(draw: &Draw, size: f32, color: impl IntoLinSrgba<ColorScalar> + Clone) {
     draw.quad()

crates/utils/src/lib.rs

@@ -42,3 +42,7 @@ impl Tup2Extension for (f32, f32) {
         self.into()
     }
 }
+
+pub fn vec2_range(min: f32, max: f32) -> Vec2 {
+    vec2(random_range(min, max), random_range(min, max))
+}