From b9bfca09006bb7e1b407e94eea1101b2f306d0a3 Mon Sep 17 00:00:00 2001
From: Felix Ableitner <me@nutomic.com>
Date: Sun, 3 Oct 2021 21:59:18 +0200
Subject: [PATCH] ants randomly change direction

---
 src/ant.rs  | 6 ++++++
 src/main.rs | 1 +
 2 files changed, 7 insertions(+)

diff --git a/src/ant.rs b/src/ant.rs
index 516f216..5bd5615 100644
--- a/src/ant.rs
+++ b/src/ant.rs
@@ -1,6 +1,7 @@
 use macroquad::prelude::*;
 use std::f32::consts::PI;
 use crate::constants::{FLOOR_COLOR, ANT_SPEED};
+use macroquad::rand::RandomRange;
 
 pub(crate) struct Ant {
   pos: Vec2,
@@ -9,6 +10,11 @@ pub(crate) struct Ant {
 
 impl Ant {
   pub(crate)fn walk(&mut self, map_data: &Image) {
+    let new_dir = PI / 8. * RandomRange::gen_range(-2, 2) as f32;
+    self.dir = self.dir + new_dir;
+    self.dir = self.dir.clamp(0., PI * 2.);
+
+
     let acceleration = Vec2::new(self.dir.sin(), -self.dir.cos());
     let new_pos = self.pos + acceleration * ANT_SPEED * get_frame_time();
     let dest_pixel = map_data.get_pixel(new_pos.x as u32, new_pos.y as u32);
diff --git a/src/main.rs b/src/main.rs
index 220c08a..77f535c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -18,6 +18,7 @@ async fn main() {
     let map = load_texture("map_scaled.png").await.unwrap();
     let map_data = map.get_texture_data();
     let mut ants = init_ants(16);
+
     loop {
         // actions
         ants.iter_mut().for_each(|ant| ant.walk(&map_data));