Module timer 

Port of the timing helpers from box2d-cpp-reference/src/timer.c (b2GetTicks, b2GetMilliseconds, b2GetMillisecondsAndReset).

Mutex / semaphore / thread wrappers from that file are not ported — Rust’s standard library covers them. Only the profiling clock remains.

Uses an Instant for relative durations. On native targets this is std::time::Instant. On wasm32-unknown-unknown, std::time::Instant::now() panics (“time not implemented on this platform”), so we use the web-time crate there instead — its Instant is backed by performance.now(). That provides real wall-clock values needed for demo profiling (Capacity’s 20 ms threshold) without trapping every world step.

SPDX-FileCopyrightText: 2023 Erin Catto SPDX-License-Identifier: MIT

Structs

Ticks

Opaque tick capture. (return value of b2GetTicks)

Functions

get_milliseconds

Milliseconds elapsed since ticks. (b2GetMilliseconds)

get_milliseconds_and_reset

Milliseconds elapsed since ticks, then reset ticks to now. (b2GetMillisecondsAndReset)

get_ticks

Capture the current time. (b2GetTicks)