diff options
| -rw-r--r-- | include/fixed_point.h | 3 | ||||
| -rw-r--r-- | include/sim_core.h | 17 | ||||
| -rw-r--r-- | src/fixed_point.cpp | 4 | ||||
| -rw-r--r-- | src/sim_core.cpp | 0 |
4 files changed, 19 insertions, 5 deletions
diff --git a/include/fixed_point.h b/include/fixed_point.h index 385ccc2..2a9ec8d 100644 --- a/include/fixed_point.h +++ b/include/fixed_point.h @@ -3,6 +3,7 @@ #include <cstdint> #include <type_traits> +#include <compare> struct fp_t { static constexpr std::int32_t Q = 16; @@ -16,7 +17,7 @@ struct fp_t { fp_t operator-(const fp_t& other) const; fp_t operator*(const fp_t& other) const; fp_t operator/(const fp_t& other) const; - bool operator==(const fp_t& other) const; + auto operator<=>(const fp_t&) const = default; }; static_assert(std::is_trivially_copyable_v<fp_t>, "fp_t must remain trivially copyable for rollback determinism"); diff --git a/include/sim_core.h b/include/sim_core.h new file mode 100644 index 0000000..88533d0 --- /dev/null +++ b/include/sim_core.h @@ -0,0 +1,17 @@ +#ifndef SIM_CORE_H +#define SIM_CORE_H + +#include <type_traits> +#include "fixed_point.h" + +struct SimState { + fp_t stage_width; + fp_t stage_height; + fp_t camera_x; + fp_t camera_y; +}; + +static_assert(std::is_trivially_copyable_v<SimState>, "SimState must be trivially copyable for rollback"); +static_assert(sizeof(SimState) == 16, "SimState size changed unexpectedly"); + +#endif // !SIM_CORE_H diff --git a/src/fixed_point.cpp b/src/fixed_point.cpp index a39f2bc..3a69958 100644 --- a/src/fixed_point.cpp +++ b/src/fixed_point.cpp @@ -39,7 +39,3 @@ fp_t fp_t::operator/(const fp_t& other) const { } return {static_cast<std::int32_t>(temp)}; } - -bool fp_t::operator==(const fp_t& other) const { - return raw == other.raw; -} diff --git a/src/sim_core.cpp b/src/sim_core.cpp new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/src/sim_core.cpp |