diff options
author | Stanislaw Halik <sthalik@misaki.pl> | 2022-10-17 10:24:37 +0200 |
---|---|---|
committer | Stanislaw Halik <sthalik@misaki.pl> | 2022-10-17 10:24:37 +0200 |
commit | 3b2e2ed05b593f2fdd8ec7153bddb6cd8dd1e246 (patch) | |
tree | 9ed08a91d0462154ff39ad759c648fb640fac07a /src/global-coords.hpp | |
parent | 8bf700d1b2a5cbb7cfd99ca8a0492b2a5bfd2f3a (diff) |
a
Diffstat (limited to 'src/global-coords.hpp')
-rw-r--r-- | src/global-coords.hpp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/global-coords.hpp b/src/global-coords.hpp new file mode 100644 index 00000000..e51dc6aa --- /dev/null +++ b/src/global-coords.hpp @@ -0,0 +1,42 @@ +#pragma once +#include "local-coords.hpp" +#include "compat/assert.hpp" + +namespace floormat { + +struct chunk_coords final { + std::int16_t x = 0, y = 0; + + constexpr bool operator==(const chunk_coords& other) const noexcept = default; +}; + +struct global_coords final { + std::uint32_t x = 0, y = 0; + + constexpr global_coords(chunk_coords c, local_coords xy) : + x{ std::uint32_t(c.x + (1 << 15)) << 4 | (xy.x & 0x0f) }, + y{ std::uint32_t(c.y + (1 << 15)) << 4 | (xy.y & 0x0f) } + {} + constexpr global_coords(std::uint32_t x, std::uint32_t y) noexcept : x{x}, y{y} {} + constexpr global_coords() noexcept = default; + + constexpr local_coords local() const noexcept; + constexpr chunk_coords chunk() const noexcept; + + constexpr bool operator==(const global_coords& other) const noexcept = default; +}; + +constexpr local_coords global_coords::local() const noexcept +{ + return { (std::uint8_t)(x % TILE_MAX_DIM), (std::uint8_t)(y % TILE_MAX_DIM) }; +} + +constexpr chunk_coords global_coords::chunk() const noexcept +{ + return { + (std::int16_t)(std::int32_t(x >> 4) - (1 << 15)), + (std::int16_t)(std::int32_t(y >> 4) - (1 << 15)), + }; +} + +} // namespace floormat |