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Add methods to collect entities of a query #320

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Add methods to collect entities of a query #320

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88bdd4c
Add methods to collect entities of a query
ameligrana Nov 21, 2025
8cdbf1c
Resize all_entities to match entity count
ameligrana Nov 21, 2025
b98fa51
Update query.jl
ameligrana Nov 21, 2025
a759e2e
Remove collect_entities function
ameligrana Nov 21, 2025
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2 changes: 1 addition & 1 deletion src/Ark.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ include("batch.jl")
#include("docs.jl") # doctest setup

export World
export is_alive, new_entity!, new_entities!, copy_entity!
export is_alive, new_entity!, new_entities!, collect_entities, collect_entities!, copy_entity!
export remove_entity!, zero_entity, is_locked, reset!
export get_components, set_components!, has_components
export add_components!, remove_components!
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18 changes: 18 additions & 0 deletions src/query.jl
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Expand Up @@ -242,6 +242,24 @@ function count_entities(q::Query)
count
end

function collect_entities!(q::Query, all_entities::AbstractVector{Entity})
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@mlange-42 mlange-42 Nov 21, 2025

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According to the Julia style guide, the mutated arg should be the first one.

count = count_entities(q)
resize!(all_entities, count)
offset = 1
for archetype in q._archetypes
if isempty(archetype.entities)
continue
end
if _contains_all(archetype.mask, q._mask) &&
!(q._has_excluded && _contains_any(archetype.mask, q._exclude_mask))
e = archetype.entities
unsafe_copyto!(all_entities, offset, e, 1, length(e))
offset += length(e)
end
end
return all_entities
end

"""
close!(q::Query)

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