implement sin and cos table

src/grid.rs

@@ -164,7 +164,7 @@ impl Grid {
     }
 
     #[inline]
-    pub fn tick(&mut self) {
+    pub fn tick(&mut self, sin_table: Vec<f32>, cos_table: Vec<f32>) {
         let (width, height) = (self.width, self.height);
         let PopulationConfig {
             sensor_distance,
@@ -180,7 +180,7 @@ impl Grid {
             agent.tick(&buf, 
                 sensor_distance, sensor_angle, 
                 rotation_angle, step_distance,
-                width, height);
+                width, height, &sin_table, &cos_table);
         });
         self.deposit_all();
     }