save

Cargo.toml

@@ -3,8 +3,19 @@ name = "forestiles"
 version = "0.1.0"
 edition = "2021"
 
+[lib]
+crate_type=["cdylib"]
+
+[[bin]]
+path = "src/lib.rs"
+name = "forestiles"
+
+[package.metadata.android]
+package = "com.forestiles.arkitu"
+build_targets = ["armv7-linux-androideabi", "aarch64-linux-android", "i686-linux-android", "x86_64-linux-android"]
+
 [dependencies]
-winit = { version = "0.29", features = ["rwh_05"] }
+winit = { version = "0.29", features = ["rwh_05", "android-native-activity"] }
 env_logger = "0.11"
 log = "0.4"
 wgpu = "22.1"

src/lib.rs

@@ -2,7 +2,6 @@ mod graphics;
 mod state;
 use state::State;
 use graphics::Graphics;
-use winit::event_loop::EventLoop;
 
 pub fn main() {
     #[cfg(target_arch = "wasm32")]
@@ -15,7 +14,7 @@ pub fn main() {
         env_logger::init();
     }
 
-    let event_loop = EventLoop::new().unwrap();
+    let event_loop = winit::event_loop::EventLoop::new().unwrap();
     let window = winit::window::WindowBuilder::new().build(&event_loop).unwrap();
 
     #[cfg(not(target_arch = "wasm32"))]
@@ -39,3 +38,28 @@ pub fn main() {
         });
     }
 }
+
+#[cfg(target_os = "android")]
+#[no_mangle]
+fn android_main(app: winit::platform::android::activity::AndroidApp) {
+    use std::thread;
+    use std::time::Duration;
+
+    use winit::platform::android::EventLoopBuilderExtAndroid;
+    use winit::event_loop::EventLoopBuilder;
+    use winit::window::WindowBuilder;
+
+    let event_loop = EventLoopBuilder::new()
+        .with_android_app(app)
+        .build()
+        .expect("Can’t build event loop");
+
+    let mut window_builder = WindowBuilder::new();        
+    let window = window_builder.build(&event_loop)
+        .expect("Can't create window!");
+
+    thread::sleep(Duration::from_secs(2));
+
+    let state = State::new();
+    pollster::block_on(Graphics::init(&window, state)).run(event_loop);
+}

src/state.rs

@@ -1,5 +1,5 @@
 use std::time::Instant;
-use noise::{Fbm, NoiseFn, Perlin};
+use noise::{Fbm, MultiFractal, NoiseFn, Perlin};
 use rand::prelude::*;
 use voronoice::{BoundingBox, Point, Voronoi, VoronoiBuilder, VoronoiCell};
 use winit::event::{DeviceEvent, ElementState, Event, MouseButton, MouseScrollDelta, WindowEvent};
@@ -13,7 +13,9 @@ pub const SQRT_3: f32 = 1.732050807568877293527446341505872367;
 enum CellKind {
     Void,
     Sea,
-    Grass,
+    Plain,
+    Beach,
+    Forest
 }
 impl CellKind {
     const VARIANTS: u8 = 3;
@@ -23,7 +25,9 @@ impl CellKind {
         match self {
             Self::Void => [0.; 4],
             Self::Sea => [0., 0., 1., 1.],
-            Self::Grass => [0., 1., 0., 1.]
+            Self::Plain => [0., 1., 0., 1.],
+            Self::Beach => [1., 1., 0., 1.],
+            Self::Forest => [0., 0.5, 0., 1.]
         }
     }
 }
@@ -32,7 +36,9 @@ impl From<u8> for CellKind {
         match value {
             0 => Self::Void,
             1 => Self::Sea,
-            2 => Self::Grass,
+            2 => Self::Plain,
+            3 => Self::Beach,
+            4 => Self::Forest,
             _ => panic!("Invalid cell kind")
         }
     }
@@ -61,7 +67,7 @@ struct Map {
 impl Map {
     const HEIGHT: f32 = 2.;
     const WIDTH: f32 = 2.;
-    const SIZE: usize = 1_00;
+    const SIZE: usize = 10_000;
     fn new(seed: u32) -> Self {
         let mut rng = rand::rngs::SmallRng::seed_from_u64(seed as u64);
         let mut sites = Vec::with_capacity(Self::SIZE);
@@ -71,11 +77,13 @@ impl Map {
         let voronoi = VoronoiBuilder::default()
             .set_sites(sites)
             .set_bounding_box(BoundingBox::new_centered(Self::WIDTH as f64, Self::HEIGHT as f64))
-            .set_lloyd_relaxation_iterations(5)
+            .set_lloyd_relaxation_iterations(3)
             .build()
             .unwrap();
         let mut cells_data = Vec::with_capacity(Self::SIZE);
         let z_noise = Fbm::<Perlin>::new(seed);
+        let moisture_noise = Fbm::<Perlin>::new(seed+1)
+            .set_frequency(2.);
         for i in 0..Self::SIZE {
             let c = voronoi.cell(i);
             let site = c.site_position();
@@ -86,8 +94,17 @@ impl Map {
             ).clamp(0., 1.);
             let k = if z <= 0.5 {
                 CellKind::Sea
+            } else if z <= 0.52 {
+                CellKind::Beach
             } else {
-                CellKind::Grass
+                let m = (
+                    (moisture_noise.get([site.x, site.y])+1.)/2. // Noise + [0; 1]
+                ).clamp(0., 1.);
+                if m > 0.5 {
+                    CellKind::Forest
+                } else {
+                    CellKind::Plain
+                }
             };
             cells_data.push(CellData::new(k, i, z as f32));
         }