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

include/Utils.hpp

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <algorithm>
+
+#include "Engine.h"
+#include "Vec.hpp"
+
+namespace safe {
+
+inline int lx(int x) { return std::max(0, x); }
+
+inline int ly(int y) { return std::max(0, y); }
+
+inline int ux(int x) { return std::min(SCREEN_HEIGHT - 1, x); }
+
+inline int uy(int y) { return std::min(SCREEN_WIDTH - 1, y); }
+
+inline int x(int x) { return safe::ux(safe::lx(x)); }
+inline int y(int y) { return safe::uy(safe::ly(y)); }
+} // namespace safe
+
+inline uint32_t *screen_at(int x, int y) {
+  return &buffer[safe::x(x)][safe::y(y)];
+}
+
+template <typename T> inline bool is_valid_pos(Vec<T> pos) {
+  return pos.x >= 0 and pos.x < SCREEN_HEIGHT and pos.y >= 0 and
+         pos.y < SCREEN_WIDTH;
+}
+
+inline Veci get_cursor() { return {.x = get_cursor_y(), .y = get_cursor_x()}; }
+
+//
+
+class GameObject {
+public:
+  virtual void act(float dt) = 0;
+  virtual void draw() = 0;
+
+  virtual ~GameObject() {}
+};