Bot class: first iteration, refactoring fix (Worm -> Snake)

include/Bot.hpp

@@ -24,14 +24,17 @@ public:
 
     if (not target_.has_value() or
         time_from_target_set_ >= config_.time_between_targets or
-        (target_.value() - real_pos_).len_sq() < radius * radius) {
+        (target_.value() - pos).len_sq() < radius * radius) {
       time_from_target_set_ = 0;
 
-      target_ = map_.find_nearest_food(real_pos_); // TODO
+      target_ = map_.find_nearest_food(pos);
     }
 
-    direction_ = (Vecf(target_.value()) - real_pos_).norm();
-    // TODO: manually change direction
+    // check for case when no food found
+    if (target_.has_value()) {
+      direction_ = (Vecf(target_.value()) - real_pos_).norm();
+      // TODO: manually change direction
+    }
 
     move(dt);
   }
@@ -54,7 +57,7 @@ private:
 
   Vecf real_pos_;
   Vecf direction_ = {};
-  std::optional<Vecf> target_ = {};
+  std::optional<Veci> target_ = {};
   float time_from_target_set_ = 0;
   float move_time_delta_ = 0;
 };

include/Map.hpp

@@ -2,6 +2,7 @@
 
 #include <deque>
 #include <iostream>
+#include <optional>
 
 #include "Canvas.hpp"
 #include "Utils.hpp"
@@ -61,6 +62,21 @@ public:
     }
   }
 
+  std::optional<Veci> find_nearest_food(Veci pos) {
+    if (food_.empty()) {
+      return std::nullopt;
+    }
+
+    Veci target = food_.front().pos;
+    for (const auto &food : food_) {
+      if ((pos - food.pos).len_sq() < (pos - target).len_sq()) {
+        target = food.pos;
+      }
+    }
+
+    return target;
+  }
+
 private:
   void generate() {
     ++current_gen_;

src/Snake.cpp

@@ -1,6 +1,6 @@
 #include "Snake.hpp"
 
-void Worm::add(Veci pos) {
+void Snake::add(Veci pos) {
   this->pos = pos;
   track_.push_back(pos);
   if (track_.size() > length) {
@@ -8,13 +8,13 @@ void Worm::add(Veci pos) {
   }
 }
 
-void Worm::draw(Veci offset) const {
+void Snake::draw(Veci offset) const {
   for (const auto &pos : track_) {
     paint::circle({{.pos = pos - offset, .color = color}, radius});
   }
 }
 
-bool Worm::touches(const Worm &other) {
+bool Snake::touches(const Snake &other) {
   int dist = radius + other.radius;
   for (const auto &elem : other.track_) {
     if ((pos - elem).len_sq() < dist * dist) {