Edited the coherence method to implement a vision range

src/main.rs

@@ -20,12 +20,14 @@ const WINDOW_HEIGHT:i32 = 600;
 const WINDOW_WIDTH:i32 = 800;
 const BIRD_SPEED:i32 = 2;
 const MAX_BIRD_SPEED:i32 = 10;
-const BIRDS_COUNT:i32 = 50;
+const BIRDS_COUNT:i32 = 500;
 const BIRD_SIZE:i32 = 15;
 
+const VISION_RANGE:i32 = 100;
 const COHERENCE_RATE:i32 = 1;
 const SEPRATION_RATE:i32 = 5;
 const ALIGNEMENT_RATE:i32 = 5;
+const NEIGHBOUR_TRESHOLD:i32 = 50;
 
 pub struct Bird{
     shape:Rect,
@@ -45,16 +47,25 @@ impl Simulation{
         }
     }
     pub fn apply_coherence(&mut self){
-        
         // first we calculate all the averages for every birds
         let mut averages:Vec<Point> = Vec::with_capacity(BIRDS_COUNT as usize);
         for i in 0..BIRDS_COUNT{
             let mut sum = Point::new(0,0);
+            let target = &self.birds[i as usize];
+            let mut x_offset:i32;
+            let mut y_offset:i32;
+            let mut neighbours_count = 0;
             for bird in &self.birds{
-                sum.x += bird.shape.x;
-                sum.y += bird.shape.y;
+                x_offset = (target.shape.x - bird.shape.x).abs();
+                y_offset = (target.shape.y - bird.shape.y).abs();
+
+                if x_offset < VISION_RANGE && y_offset < VISION_RANGE{
+                    sum.x += bird.shape.x;
+                    sum.y += bird.shape.y;
+                    neighbours_count += 1;
+                }
             }
-            let average = Point::new(sum.x / BIRDS_COUNT as i32,sum.y / BIRDS_COUNT as i32);
+            let average = Point::new(sum.x / neighbours_count as i32,sum.y / neighbours_count as i32);
             averages.push(average);
         }
         
@@ -96,7 +107,36 @@ impl Simulation{
         
     }
     pub fn apply_separation(&mut self){
+        /*
+        // we need to check who is "close" form each bird 
+        let mut neighbours:Vec<Point> = Vec::new();
+        for i in 0..BIRDS_COUNT{
+            let target = &self.birds[i as usize];
+            let mut xdistance:i32;
+            let mut ydistance:i32; 
+            
+            for bird in &self.birds{
+                xdistance = (target.shape.x - bird.shape.x).abs();
+                ydistance = (target.shape.y - bird.shape.y).abs();
 
+                if xdistance <= NEIGHBOUR_TRESHOLD && ydistance <= NEIGHBOUR_TRESHOLD{
+                    //
+                    //we need 
+                    neighbours.push(bird);
+                }
+            }
+        }   
+        
+        let mut averages
+        let mut sum:Point = Point::new(0,0);
+        for b in &neighbours{
+            sum.x += b.shape.x;
+            sum.y += b.shape.y;
+        }
+
+
+        // Then we just need to steer away from them
+        */
     }
     pub fn apply_alignement(&mut self){