Very basic ECS

1 files changed, 119 insertions, 0 deletions

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+#ifndef COORDINATES_H_A45D34FB
+#define COORDINATES_H_A45D34FB
+
+#include <cstddef>
+
+template <typename T>
+class vec2 {
+public:
+
+  T coords[2];
+
+  constexpr vec2() : coords{0, 0}
+  {
+  }
+
+  constexpr vec2(T x, T y) : coords{x, y}
+  {
+  }
+
+  inline T& x()
+  {
+    return coords[0];
+  }
+
+  constexpr inline const T& x() const
+  {
+    return coords[0];
+  }
+
+  inline T& w()
+  {
+    return coords[0];
+  }
+
+  constexpr inline const T& w() const
+  {
+    return coords[0];
+  }
+
+  inline T& y()
+  {
+    return coords[1];
+  }
+
+  constexpr inline const T& y() const
+  {
+    return coords[1];
+  }
+
+  inline T& h()
+  {
+    return coords[1];
+  }
+
+  constexpr inline const T& h() const
+  {
+    return coords[1];
+  }
+
+  template <typename R>
+  constexpr operator vec2<R>() const
+  {
+    return vec2<R>(x(), y());
+  }
+
+  constexpr vec2 operator+(const vec2& other) const
+  {
+    return vec2(x() + other.x(), y() + other.y());
+  }
+
+  vec2& operator+=(const vec2& other)
+  {
+    x() += other.x();
+    y() += other.y();
+
+    return *this;
+  }
+
+  constexpr vec2 operator-(const vec2& other) const
+  {
+    return vec2(x() - other.x(), y() - other.y());
+  }
+
+  vec2 operator-=(const vec2& other)
+  {
+    x() -= other.x();
+    y() -= other.y();
+
+    return *this;
+  }
+
+  constexpr vec2 operator-() const
+  {
+    return vec2(-x(), -y());
+  }
+
+  constexpr vec2 operator*(T s) const
+  {
+    return vec2(x() * s, y() * s);
+  }
+
+  vec2& operator*=(T s)
+  {
+    x() *= s;
+    y() *= s;
+
+    return *this;
+  }
+
+  constexpr vec2 operator*(const vec2& other) const
+  {
+    return vec2(x() * other.x(), y() * other.y());
+  }
+
+};
+
+using vec2s = vec2<size_t>;
+
+#endif /* end of include guard: COORDINATES_H_A45D34FB */