Add Command::insert_batch and World::insert_batch #8600
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james7132
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C-Feature
alice-i-cecile
added
C-Performance
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@Connor-McMillin can you update the PR description to fill out the template and make / show some benchmarking results to justify this? |
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Oct 13, 2024
# Objective `insert_or_spawn_batch` exists, but a version for just inserting doesn't - Closes #2693 - Closes #8384 - Adopts/supersedes #8600 ## Solution Add `insert_batch`, along with the most common `insert` variations: - `World::insert_batch` - `World::insert_batch_if_new` - `World::try_insert_batch` - `World::try_insert_batch_if_new` - `Commands::insert_batch` - `Commands::insert_batch_if_new` - `Commands::try_insert_batch` - `Commands::try_insert_batch_if_new` ## Testing Added tests, and added a benchmark for `insert_batch`. Performance is slightly better than `insert_or_spawn_batch` when only inserting:  <details> <summary>old benchmark</summary> This was before reworking it to remove the `UnsafeWorldCell`:  </details> --- ## Showcase Usage is the same as `insert_or_spawn_batch`: ``` use bevy_ecs::{entity::Entity, world::World, component::Component}; #[derive(Component)] struct A(&'static str); #[derive(Component, PartialEq, Debug)] struct B(f32); let mut world = World::new(); let entity_a = world.spawn_empty().id(); let entity_b = world.spawn_empty().id(); world.insert_batch([ (entity_a, (A("a"), B(0.0))), (entity_b, (A("b"), B(1.0))), ]); assert_eq!(world.get::<B>(entity_a), Some(&B(0.0))); ```
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Objective
Solution
alloc_with_no_replacement, this function directly callsworld.entities.get(entity)to find the currentEntityLocation(which may be invalid). It panics if it runs into an invalid entityChangelog
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