heavy spruce
say I have this piece of code
fn move_player(mut player: Query<&mut LinearVelocity, With<Player>>) {
let mut counter = 0;
for p in player.iter() {
counter += 1
}
println!("{counter}");
}
which adds one to the counter for every entity that matches a query.
It spams my console with 1, indicating that there's exactly one entity that matches the query.
but if I were to call .single() on player
fn move_player(mut player: Query<&mut LinearVelocity, With<Player>>) {
player.single();
}
it crashes with the following message
called Result::unwrap() on an Err value: NoEntities("bevy_ecs::query::state::QueryState<&bevy_xpbd_2d::components::LinearVelocity, bevy_ecs::query::filter::With<bevy_test::components::Player>>")
how is this the case as there was exactly one entity that matches the query as indicated by the first function.
Anyone care to explain? Thanks in advance
fallow mulch