# Objective On some platforms (observed on Windows and Linux, works fine on web), velocity of all entities would be initialized to zero, making them simply fall into the star. ## Solution Using `Time<Fixed>::timestep` instead of `Time::delta_seconds` to initialize velocity. Since the entities are generated in the startup schedule, no time has elapsed yet and `Time::delta_seconds` would return zero on some platforms. `Time<Fixed>::timestep` will always return the expected time step of `FixedUpdate` schedule. |
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| .. | ||
| component_change_detection.rs | ||
| custom_query_param.rs | ||
| custom_schedule.rs | ||
| dynamic.rs | ||
| ecs_guide.rs | ||
| event.rs | ||
| fixed_timestep.rs | ||
| generic_system.rs | ||
| hierarchy.rs | ||
| iter_combinations.rs | ||
| nondeterministic_system_order.rs | ||
| one_shot_systems.rs | ||
| parallel_query.rs | ||
| removal_detection.rs | ||
| run_conditions.rs | ||
| send_and_receive_events.rs | ||
| startup_system.rs | ||
| state.rs | ||
| system_closure.rs | ||
| system_param.rs | ||
| system_piping.rs | ||
| system_stepping.rs | ||