deterministic-math-guidelines

To ensure cross-platform deterministic math in Swift game logic, replace platform-dependent math calls with DeterministicMath methods and apply semantic types for positions and vectors. This enforces fixed-point arithmetic to avoid platform-dependent math pitfalls.

Floating point math causes desync across macOS, Linux, and iOS due to platform-dependent math functions. Enforcing fixed-point arithmetic and deterministic methods ensures consistent results for physics and movement calculations across these targets.

The best way to handle collision detection deterministically in Swift is by using semantic types and fixed-point arithmetic for vector operations. This maintains cross-platform consistency and avoids direct Int64 returns.

No, standard Swift math functions are platform-dependent and cause non-deterministic results for physics calculations across iOS and Linux. You must use DeterministicMath methods and fixed-point arithmetic to maintain synchronization.

You need fixed-point arithmetic for game logic when performing physics, movement, distances, vectors, and collision detection across macOS, Linux, and iOS. It enforces cross-platform determinism by avoiding platform-dependent math functions.