GhostEngine/Ghost.Entities/Template/World.Query.tt

<#@ template language="C#" #>
<#@ output extension=".cs" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Text" #>
<#@ include file="Helpers.ttinclude" #>

using Ghost.Entities.Components;
using Ghost.Entities.Query;

namespace Ghost.Entities;

public partial class World
{
<# for (var index = 1; index <= Amount; index++) {
    var generics  = AppendGenerics(index);
    var restrictions = AppendGenericRestrictions(index, "unmanaged, IComponentData");
    var tryGetPools = TryGetComponentPools(index);
    var poolParams = Enumerable.Range(0, index)
                                      .Select(i => $"pool{i}")
                                      .Aggregate((a,b)=> a + ", " + b);
    var countSource = "pool0.Count";
#>
    public QueryEnumerable<<#= generics #>> Query<<#= generics #>>()
        <#= restrictions #>
    {
        if (!(<#= tryGetPools #>))
        {
            return default;
        }

        return new QueryEnumerable<<#= generics #>>(
            this,
            <#= poolParams #>,
            <#= countSource #>);
    }

    public QueryEnumerable<<#= generics #>> QueryFilter<<#= generics #>>(ref readonly QueryFilter filter) 
        <#= restrictions #>
    {
        if (!(<#= tryGetPools #>))
        {
            return default;
        }

        return new QueryEnumerable<<#= generics #>>(
            this,
            <#= poolParams #>,
            <#= countSource #>,
            in filter);
    }

<# } #>
}