moving circle prototype, circle and square drawing, part of food map implementation, utils

include/Map.hpp

@@ -0,0 +1,62 @@
+#pragma once
+
+#include <deque>
+
+#include "Utils.hpp"
+#include "Vec.hpp"
+
+class Map : public GameObject {
+  struct Food {
+    size_t gen;
+    Veci pos;
+    int weight;
+    bool eaten = false;
+  };
+
+  static constexpr double GEN_INTERVAL = 1.0;
+  static constexpr size_t FOOD_EXISTS_GENS = 10;
+  static constexpr size_t GEN_FOOD_COUNT = 1000;
+  static constexpr int SIZE_X = 20000;
+  static constexpr int SIZE_Y = 20000;
+
+public:
+  void act(float dt) override {
+    time_from_last_gen_ += dt;
+    if (time_from_last_gen_ > GEN_INTERVAL) {
+      time_from_last_gen_ -= GEN_INTERVAL;
+      generate();
+    }
+  }
+
+  int eat(Veci pos, int dist) { // TODO: faster variant ?
+    size_t eaten_weight = 0;
+    for (auto &food : food_) {
+      if ((pos - food.pos).len_sq() < dist * dist and not food.eaten) {
+        food.eaten = true;
+        eaten_weight += food.weight;
+      }
+    }
+    return eaten_weight;
+  }
+
+  void draw() override {} // TODO
+
+private:
+  void generate() {
+    ++current_gen_;
+    while (food_.front().gen + FOOD_EXISTS_GENS < current_gen_) {
+      food_.pop_front();
+    }
+
+    for (size_t i = 0; i < GEN_FOOD_COUNT; ++i) {
+      food_.push_back({.gen = current_gen_,
+                       .pos = {.x = rand() % SIZE_X, .y = rand() % SIZE_Y},
+                       .weight = 1});
+    }
+  }
+
+private:
+  double time_from_last_gen_ = 0;
+  size_t current_gen_ = 0;
+  std::deque<Food> food_ = {};
+};