Added Vector2 for direction, steering behavior gut draft not working

1 files changed, 29 insertions, 5 deletions

diff --git a/src/main.rs b/src/main.rs
index 4c6ce8f..2c633cc 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,21 +1,39 @@
 extern crate sdl2;
+extern crate rand;
 
 use sdl2::event::Event;
 use sdl2::keyboard::Keycode;
 use sdl2::pixels::Color;
-use sdl2::rect::Point;
 
+use rand::Rng;
+
+pub mod vector2;
 pub mod boid;
 use boid::Boid;
 
+const HEIGHT:            i32   = 480;
+const WIDTH:             i32   = 640;
+const BOIDS_NUM:         usize = 100;
+// const NEIGHBOURS_RADIUS: i32   = ((HEIGHT + WIDTH) / 2) / 10;
+
 fn main() {
     let sdl = sdl2::init().unwrap();
     let video_subsys = sdl.video().unwrap();
 
-    let window = video_subsys.window("boids", 640, 480).build().unwrap();
+    let window = video_subsys.window("boids", WIDTH as u32, HEIGHT as u32).build().unwrap();
     let mut canvas = window.into_canvas().build().unwrap();
 
-    let mut b = Boid::new(Point::new(50, 50));
+    let mut boids: Vec<Boid> = Vec::with_capacity(BOIDS_NUM);
+
+    let mut rng = rand::thread_rng();
+    for _ in 0..BOIDS_NUM {
+        boids.push(Boid::new(
+            rng.gen_range(0, WIDTH as i32),
+            rng.gen_range(0, HEIGHT as i32),
+            rng.gen_range(-2.0, 2.0),
+            rng.gen_range(-2.0, 2.0),
+        ));
+    }
 
     let mut event_pump = sdl.event_pump().unwrap();
     'main: loop {
@@ -31,11 +49,17 @@ fn main() {
         canvas.set_draw_color(Color::RGB(0, 0, 0));
         canvas.clear();
         canvas.set_draw_color(Color::RGB(200, 200, 200));
-        b.draw(&mut canvas);
+        for b in boids.iter() {
+            b.draw(&mut canvas);
+        }
 
         canvas.present();
 
-        b.step();
+        let prev_boids = boids.clone();
+
+        for b in boids.iter_mut() {
+            b.step(&prev_boids, WIDTH, HEIGHT);
+        }
 
         std::thread::sleep(std::time::Duration::new(0, 50_000_000));
     }