a

1 files changed, 42 insertions, 0 deletions

diff --git a/src/point.hpp b/src/point.hpp
new file mode 100644
index 00000000..99c4acdf
--- /dev/null
+++ b/src/point.hpp
@@ -0,0 +1,42 @@
+#pragma once
+#include "global-coords.hpp"
+#include <compare>
+
+namespace floormat {
+
+// todo pack this within 8 bytes
+struct point
+{
+    global_coords coord;
+    Vector2b offset;
+
+    constexpr bool operator==(const point&) const = default;
+    friend constexpr std::strong_ordering operator<=>(const point& a, const point& b) noexcept;
+};
+
+constexpr std::strong_ordering operator<=>(const point& p1, const point& p2) noexcept
+{
+    auto c1 = p1.coord.to_signed3(), c2 = p2.coord.to_signed3();
+
+    if (auto val = c1.z() <=> c2.z(); val != std::strong_ordering::equal)
+        return val;
+    if (auto val = c1.y() <=> c2.y(); val != std::strong_ordering::equal)
+        return val;
+    if (auto val = c1.x() <=> c2.x(); val != std::strong_ordering::equal)
+        return val;
+    if (auto val = p1.offset.y() <=> p2.offset.y(); val != std::strong_ordering::equal)
+        return val;
+    if (auto val = p1.offset.x() <=> p2.offset.x(); val != std::strong_ordering::equal)
+        return val;
+
+    return std::strong_ordering::equal;
+}
+
+struct packed_point
+{
+    uint64_t cx : 12, cy : 12, cz : 4,
+             tx : 8, ty : 8,
+             ox : 4, oy : 4;
+};
+
+} // namespace floormat