text rendering + food couter, minor fixes

include/Map.hpp

@@ -89,12 +89,12 @@ private:
           .gen = current_gen_,
           .pos =
               {
-                  .x = std::rand() % config_.size.x,
-                  .y = std::rand() % config_.size.y,
+                  .x = utils::rand_to(config_.size.x),
+                  .y = utils::rand_to(config_.size.y),
               },
           .weight = config_.min_food_weight +
-                    std::rand() % std::abs(config_.max_food_weight -
-                                           config_.min_food_weight),
+                    utils::rand_to(std::abs(config_.max_food_weight -
+                                            config_.min_food_weight)),
       });
     }
   }

include/Snake.hpp

@@ -11,7 +11,7 @@ class SnakeObject {
 public:
   struct Config {
     Object obj;
-    size_t initial_length;
+    uint initial_length;
     int radius;
   };
 
@@ -34,12 +34,14 @@ public:
 
   //
 
-  size_t get_length() { return length_; }
+  uint get_length() { return length_; }
 
-  void set_length(size_t length) { length_ = length; }
+  uint get_initial_length() { return canvas_config_.initial_length; }
+
+  void set_length(uint length) { length_ = length; }
 
   void inc_length(int inc) {
-    if (-inc > static_cast<int>(length_)) {
+    if (-inc > int(length_)) {
       length_ = 1;
     } else {
       length_ += inc;
@@ -85,14 +87,7 @@ public:
 protected:
   virtual void change_direction(float dt) = 0;
 
-  virtual void move(float dt) {
-    real_pos_ += direction_ * dt * snake_config_.speed;
-    move_time_delta_ += dt;
-    if (move_time_delta_ > snake_config_.move_interval) {
-      move_time_delta_ -= snake_config_.move_interval;
-      add(Veci(real_pos_));
-    }
-  }
+  virtual void move(float dt);
 
 protected:
   const Config snake_config_;

include/Text.hpp

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "Canvas.hpp"
+
+namespace canvas {
+
+struct Text : public Object {
+  uint scale;
+  uint value;
+};
+
+} // namespace canvas
+
+namespace paint {
+
+void text(const canvas::Text &t);
+
+} // namespace paint

include/Utils.hpp

@@ -56,6 +56,15 @@ template <typename T> inline Vec<T> to_world_coord(Vec<T> pos) {
   };
 }
 
+inline int rand_to(int x) {
+  if (std::abs(x) <= 1) {
+    return 0;
+  }
+
+  bool is_negative = x < 0;
+  return (is_negative ? -1 : 1) + rand() % std::abs(x);
+}
+
 } // namespace utils
 
 namespace color {