Boids_avoid_shark.m Boids_draw.m Boids_get_center.m Boids_init.m Boids_limit_position.m Boids_limit_velocity.m Boids_main.m Boids_move_all_to_new_pos.m Boids_rule1.m Boids_rule2.m Boids_rule3.m test.m vectarrow.m