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ecs_filter-gen.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>LeoECS Filters generator</title>
<style>
html {
font-family: monospace;
}
.container {
display: flex;
flex-direction: column;
align-items: center;
}
</style>
</head>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/ejs.min.js"></script>
<body>
<div class="container">
<div>
<label>Include components amount</label>
<input id="incValue" type="number" value="6" />
</div>
<div>
<label>Exclude components amount</label>
<input id="excValue" type="number" value="2" />
</div>
<div>
<button onclick="onGenClick()">Generate</button>
</div>
<div>
<textarea id="output" rows="40" cols="100" readonly wrap="off"></textarea>
</div>
</div>
</body>
<script>
const onGenClick = () => {
const incCount = +document.getElementById('incValue').value
const excCount = +document.getElementById('excValue').value
const tpl = `
// ----------------------------------------------------------------------------
// The MIT License
// Simple Entity Component System framework https://github.com/Leopotam/ecs
// Copyright (c) 2017-2022 Leopotam <[email protected]>
// ----------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
// ReSharper disable InconsistentNaming
// ReSharper disable ClassNeverInstantiated.Global
namespace Leopotam.Ecs {
#if LEOECS_FILTER_EVENTS
/// <summary>
/// Common interface for all filter listeners.
/// </summary>
public interface IEcsFilterListener {
void OnEntityAdded (in EcsEntity entity);
void OnEntityRemoved (in EcsEntity entity);
}
#endif
/// <summary>
/// Container for filtered entities based on specified constraints.
/// </summary>
#if ENABLE_IL2CPP
[Unity.IL2CPP.CompilerServices.Il2CppSetOption (Unity.IL2CPP.CompilerServices.Option.NullChecks, false)]
[Unity.IL2CPP.CompilerServices.Il2CppSetOption (Unity.IL2CPP.CompilerServices.Option.ArrayBoundsChecks, false)]
#endif
#if UNITY_2019_1_OR_NEWER
[UnityEngine.Scripting.Preserve]
#endif
public abstract class EcsFilter {
protected EcsEntity[] Entities;
protected readonly Dictionary<int, int> EntitiesMap;
protected int EntitiesCount;
protected int LockCount;
protected readonly int EntitiesCacheSize;
DelayedOp[] _delayedOps;
int _delayedOpsCount;
#if LEOECS_FILTER_EVENTS
protected IEcsFilterListener[] Listeners = new IEcsFilterListener[4];
protected int ListenersCount;
#endif
protected internal int[] IncludedTypeIndices;
protected internal int[] ExcludedTypeIndices;
public Type[] IncludedTypes;
public Type[] ExcludedTypes;
#if UNITY_2019_1_OR_NEWER
[UnityEngine.Scripting.Preserve]
#endif
protected EcsFilter (EcsWorld world) {
EntitiesCacheSize = world.Config.FilterEntitiesCacheSize;
Entities = new EcsEntity[EntitiesCacheSize];
EntitiesMap = new Dictionary<int, int> (EntitiesCacheSize);
_delayedOps = new DelayedOp[EntitiesCacheSize];
}
/// <summary>
/// Remove subscription from component pools.
/// </summary>
public abstract void Destroy ();
#if DEBUG
public Dictionary<int, int> GetInternalEntitiesMap () {
return EntitiesMap;
}
#endif
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public Enumerator GetEnumerator () {
return new Enumerator (this);
}
/// <summary>
/// Gets entity by index.
/// </summary>
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public ref EcsEntity GetEntity (in int idx) {
return ref Entities[idx];
}
/// <summary>
/// Gets entities count.
/// </summary>
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public int GetEntitiesCount () {
return EntitiesCount;
}
/// <summary>
/// Is filter not contains entities.
/// </summary>
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public bool IsEmpty () {
return EntitiesCount == 0;
}
#if LEOECS_FILTER_EVENTS
/// <summary>
/// Subscribes listener to filter events.
/// </summary>
/// <param name="listener">Listener.</param>
public void AddListener (IEcsFilterListener listener) {
#if DEBUG
for (int i = 0, iMax = ListenersCount; i < iMax; i++) {
if (Listeners[i] == listener) {
throw new Exception ("Listener already subscribed.");
}
}
#endif
if (Listeners.Length == ListenersCount) {
Array.Resize (ref Listeners, ListenersCount << 1);
}
Listeners[ListenersCount++] = listener;
}
// ReSharper disable once CommentTypo
/// <summary>
/// Unsubscribes listener from filter events.
/// </summary>
/// <param name="listener">Listener.</param>
public void RemoveListener (IEcsFilterListener listener) {
for (int i = 0, iMax = ListenersCount; i < iMax; i++) {
if (Listeners[i] == listener) {
ListenersCount--;
// cant fill gap with last element due listeners order is important.
Array.Copy (Listeners, i + 1, Listeners, i, ListenersCount - i);
break;
}
}
}
#endif
/// <summary>
/// Is filter compatible with components on entity with optional added / removed component.
/// </summary>
/// <param name="entityData">Entity data.</param>
/// <param name="addedRemovedTypeIndex">Optional added (greater 0) or removed (less 0) component. Will be ignored if zero.</param>
[MethodImpl (MethodImplOptions.AggressiveInlining)]
internal bool IsCompatible (in EcsWorld.EcsEntityData entityData, int addedRemovedTypeIndex) {
var incIdx = IncludedTypeIndices.Length - 1;
for (; incIdx >= 0; incIdx--) {
var typeIdx = IncludedTypeIndices[incIdx];
var idx = entityData.ComponentsCountX2 - 2;
for (; idx >= 0; idx -= 2) {
var typeIdx2 = entityData.Components[idx];
if (typeIdx2 == -addedRemovedTypeIndex) {
continue;
}
if (typeIdx2 == addedRemovedTypeIndex || typeIdx2 == typeIdx) {
break;
}
}
// not found.
if (idx == -2) {
break;
}
}
// one of required component not found.
if (incIdx != -1) {
return false;
}
// check for excluded components.
if (ExcludedTypeIndices != null) {
for (var excIdx = 0; excIdx < ExcludedTypeIndices.Length; excIdx++) {
var typeIdx = ExcludedTypeIndices[excIdx];
for (var idx = entityData.ComponentsCountX2 - 2; idx >= 0; idx -= 2) {
var typeIdx2 = entityData.Components[idx];
if (typeIdx2 == -addedRemovedTypeIndex) {
continue;
}
if (typeIdx2 == addedRemovedTypeIndex || typeIdx2 == typeIdx) {
return false;
}
}
}
}
return true;
}
[MethodImpl (MethodImplOptions.AggressiveInlining)]
protected bool AddDelayedOp (bool isAdd, in EcsEntity entity) {
if (LockCount <= 0) {
return false;
}
if (_delayedOps.Length == _delayedOpsCount) {
Array.Resize (ref _delayedOps, _delayedOpsCount << 1);
}
ref var op = ref _delayedOps[_delayedOpsCount++];
op.IsAdd = isAdd;
op.Entity = entity;
return true;
}
#if LEOECS_FILTER_EVENTS
[MethodImpl (MethodImplOptions.AggressiveInlining)]
protected void ProcessListeners (bool isAdd, in EcsEntity entity) {
if (isAdd) {
for (int i = 0, iMax = ListenersCount; i < iMax; i++) {
Listeners[i].OnEntityAdded (entity);
}
} else {
for (int i = 0, iMax = ListenersCount; i < iMax; i++) {
Listeners[i].OnEntityRemoved (entity);
}
}
}
#endif
[MethodImpl (MethodImplOptions.AggressiveInlining)]
void Lock () {
LockCount++;
}
[MethodImpl (MethodImplOptions.AggressiveInlining)]
void Unlock () {
#if DEBUG
if (LockCount <= 0) {
throw new Exception ($"Invalid lock-unlock balance for \\"{GetType ().Name}\\".");
}
#endif
LockCount--;
if (LockCount == 0 && _delayedOpsCount > 0) {
// process delayed operations.
for (int i = 0, iMax = _delayedOpsCount; i < iMax; i++) {
ref var op = ref _delayedOps[i];
if (op.IsAdd) {
OnAddEntity (op.Entity);
} else {
OnRemoveEntity (op.Entity);
}
}
_delayedOpsCount = 0;
}
}
#if DEBUG
/// <summary>
/// For debug purposes. Check filters equality by included / excluded components.
/// </summary>
/// <param name="filter">Filter to compare.</param>
internal bool AreComponentsSame (EcsFilter filter) {
if (IncludedTypeIndices.Length != filter.IncludedTypeIndices.Length) {
return false;
}
for (var i = 0; i < IncludedTypeIndices.Length; i++) {
if (Array.IndexOf (filter.IncludedTypeIndices, IncludedTypeIndices[i]) == -1) {
return false;
}
}
if ((ExcludedTypeIndices == null && filter.ExcludedTypeIndices != null) ||
(ExcludedTypeIndices != null && filter.ExcludedTypeIndices == null)) {
return false;
}
if (ExcludedTypeIndices != null) {
if (filter.ExcludedTypeIndices == null || ExcludedTypeIndices.Length != filter.ExcludedTypeIndices.Length) {
return false;
}
for (var i = 0; i < ExcludedTypeIndices.Length; i++) {
if (Array.IndexOf (filter.ExcludedTypeIndices, ExcludedTypeIndices[i]) == -1) {
return false;
}
}
}
return true;
}
#endif
/// <summary>
/// Event for adding compatible entity to filter.
/// Warning: Don't call manually!
/// </summary>
/// <param name="entity">Entity.</param>
public abstract void OnAddEntity (in EcsEntity entity);
/// <summary>
/// Event for removing non-compatible entity to filter.
/// Warning: Don't call manually!
/// </summary>
/// <param name="entity">Entity.</param>
public abstract void OnRemoveEntity (in EcsEntity entity);
public struct Enumerator : IDisposable {
readonly EcsFilter _filter;
readonly int _count;
int _idx;
[MethodImpl (MethodImplOptions.AggressiveInlining)]
internal Enumerator (EcsFilter filter) {
_filter = filter;
_count = _filter.GetEntitiesCount ();
_idx = -1;
_filter.Lock ();
}
public int Current {
[MethodImpl (MethodImplOptions.AggressiveInlining)]
get => _idx;
}
#if ENABLE_IL2CPP
[Unity.IL2CPP.CompilerServices.Il2CppSetOption (Unity.IL2CPP.CompilerServices.Option.NullChecks, false)]
[Unity.IL2CPP.CompilerServices.Il2CppSetOption (Unity.IL2CPP.CompilerServices.Option.ArrayBoundsChecks, false)]
#endif
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public void Dispose () {
_filter.Unlock ();
}
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public bool MoveNext () {
return ++_idx < _count;
}
}
struct DelayedOp {
public bool IsAdd;
public EcsEntity Entity;
}
}
<% for (let i = 1; i <= data.incCount; i++) { -%>
#if ENABLE_IL2CPP
[Unity.IL2CPP.CompilerServices.Il2CppSetOption (Unity.IL2CPP.CompilerServices.Option.NullChecks, false)]
[Unity.IL2CPP.CompilerServices.Il2CppSetOption (Unity.IL2CPP.CompilerServices.Option.ArrayBoundsChecks, false)]
#endif
#if UNITY_2019_1_OR_NEWER
[UnityEngine.Scripting.Preserve]
#endif
public class EcsFilter<<% for (let ii = 1; ii <= i; ii++) { %><% if (ii > 1) { %>, <% } %>Inc<%=ii%><% } %>> : EcsFilter, IEcsComponentPoolResizeListener
<% for (let ii = 1; ii <= i; ii++) { -%>
where Inc<%=ii%> : struct<% if (ii == i) { %> {<% } %>
<% } -%>
<% for (let ii = 1; ii <= i; ii++) { -%>
int[] _get<%=ii%>;
<% } -%>
<% for (let ii = 1; ii <= i; ii++) { -%>
readonly bool _allow<%=ii%>;
<% } -%>
<% for (let ii = 1; ii <= i; ii++) { -%>
readonly EcsComponentPool<Inc<%=ii%>> _pool<%=ii%>;
Inc<%=ii%>[] _pool<%=ii%>Items;
<% } -%>
<% for (let ii = 1; ii <= i; ii++) { -%>
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public ref Inc<%=ii%> Get<%=ii%> (in int idx) {
return ref _pool<%=ii%>Items[_get<%=ii%>[idx]];
}
<% } -%>
<% for (let ii = 1; ii <= i; ii++) { -%>
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public EcsComponentRef<Inc<%=ii%>> Get<%=ii%>Ref (in int idx) {
return _pool<%=ii%>.Ref (_get<%=ii%>[idx]);
}
<% } -%>
#if UNITY_2019_1_OR_NEWER
[UnityEngine.Scripting.Preserve]
#endif
protected EcsFilter (EcsWorld world) : base (world) {
<% for (let ii = 1; ii <= i; ii++) { -%>
_allow<%=ii%> = !EcsComponentType<Inc<%=ii%>>.IsIgnoreInFilter;
<% } -%>
<% for (let ii = 1; ii <= i; ii++) { -%>
_pool<%=ii%> = world.GetPool<Inc<%=ii%>> ();
_pool<%=ii%>.AddResizeListener (this);
_pool<%=ii%>Items = _pool<%=ii%>.Items;
<% } -%>
<% for (let ii = 1; ii <= i; ii++) { -%>
_get<%=ii%> = _allow<%=ii%> ? new int[EntitiesCacheSize] : null;
<% } -%>
IncludedTypeIndices = new[] {
<% for (let ii = 1; ii <= i; ii++) { -%>
EcsComponentType<Inc<%=ii%>>.TypeIndex<%if (ii < i) { %>,<% } %>
<% } -%>
};
IncludedTypes = new[] {
<% for (let ii = 1; ii <= i; ii++) { -%>
EcsComponentType<Inc<%=ii%>>.Type<%if (ii < i) { %>,<% } %>
<% } -%>
};
}
/// <summary>
/// For internal use.
/// </summary>
public override void Destroy () {
<% for (let ii = 1; ii <= i; ii++) { -%>
_pool<%=ii%>.RemoveResizeListener (this);
<% } -%>
}
/// <summary>
/// For internal use.
/// </summary>
public void OnComponentPoolResize () {
<% for (let ii = 1; ii <= i; ii++) { -%>
_pool<%=ii%>Items = _pool<%=ii%>.Items;
<% } -%>
}
/// <summary>
/// For internal use.
/// </summary>
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public override void OnAddEntity (in EcsEntity entity) {
if (AddDelayedOp (true, entity)) { return; }
if (Entities.Length == EntitiesCount) {
var newSize = EntitiesCount << 1;
Array.Resize (ref Entities, newSize);
<% for (let ii = 1; ii <= i; ii++) { -%>
if (_allow<%=ii%>) { Array.Resize (ref _get<%=ii%>, newSize); }
<% } -%>
}
// inlined and optimized EcsEntity.Get() call.
ref var entityData = ref entity.Owner.GetEntityData (entity);
<% for (let ii = 1; ii <= i; ii++) { -%>
var allow<%=ii%> = _allow<%=ii%>;
<% } -%>
for (int i = 0, iMax = entityData.ComponentsCountX2, left = <%=i%>; left > 0 && i < iMax; i += 2) {
var typeIdx = entityData.Components[i];
var itemIdx = entityData.Components[i + 1];
<% for (let ii = 1; ii <= i; ii++) { -%>
if (allow<%=ii%> && typeIdx == EcsComponentType<Inc<%=ii%>>.TypeIndex) {
_get<%=ii%>[EntitiesCount] = itemIdx;
allow<%=ii%> = false;
left--;
<% if (ii !== i) { -%>
continue;
<% } -%>
}
<% } -%>
}
EntitiesMap[entity.GetInternalId ()] = EntitiesCount;
Entities[EntitiesCount++] = entity;
#if LEOECS_FILTER_EVENTS
ProcessListeners (true, entity);
#endif
}
/// <summary>
/// For internal use.
/// </summary>
[MethodImpl (MethodImplOptions.AggressiveInlining)]
public override void OnRemoveEntity (in EcsEntity entity) {
if (AddDelayedOp (false, entity)) { return; }
var entityId = entity.GetInternalId ();
var idx = EntitiesMap[entityId];
EntitiesMap.Remove (entityId);
EntitiesCount--;
if (idx < EntitiesCount) {
Entities[idx] = Entities[EntitiesCount];
EntitiesMap[Entities[idx].GetInternalId ()] = idx;
<% for (let ii = 1; ii <= i; ii++) { -%>
if (_allow<%=ii%>) { _get<%=ii%>[idx] = _get<%=ii%>[EntitiesCount]; }
<% } -%>
}
#if LEOECS_FILTER_EVENTS
ProcessListeners (false, entity);
#endif
}
<% for (let e = 1; e <= data.excCount; e++) { -%>
public class Exclude<<% for (let ee = 1; ee <= e; ee++) { %><% if (ee > 1) { %>, <% } %>Exc<%=ee%><% } %>> : EcsFilter<<% for (let ii = 1; ii <= i; ii++) { %><% if (ii > 1) { %>, <% } %>Inc<%=ii%><% } %>>
<% for (let ee = 1; ee <= e; ee++) { -%>
where Exc<%=ee%> : struct<% if (ee == e) { %> {<% } %>
<% } -%>
#if UNITY_2019_1_OR_NEWER
[UnityEngine.Scripting.Preserve]
#endif
protected Exclude (EcsWorld world) : base (world) {
ExcludedTypeIndices = new[] {
<% for (let ee = 1; ee <= e; ee++) { -%>
EcsComponentType<Exc<%=ee%>>.TypeIndex<%if (ee < e) { %>,<% } %>
<% } -%>
};
ExcludedTypes = new[] {
<% for (let ee = 1; ee <= e; ee++) { -%>
EcsComponentType<Exc<%=ee%>>.Type<%if (ee < e) { %>,<% } %>
<% } -%>
};
}
}
<% } -%>
}
<% } -%>
}
`
document.getElementById('output').innerHTML = ejs.render(tpl, { data: { incCount, excCount } }).trim()
}
</script>
</html>