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Rework MapCache API.

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This clarifies the ownership of the underlying
IReadOnlyPackage objects, and avoids passing
around some unnecessary state.
This commit is contained in:
Paul Chote
2025-03-02 21:19:50 +00:00
committed by Gustas Kažukauskas
parent 5c0b82e65b
commit e186dc428e
7 changed files with 72 additions and 62 deletions
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82
OpenRA.Game/Map/MapPreview.cs
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@@ -198,19 +198,23 @@ namespace OpenRA
static readonly CPos[] NoSpawns = Array.Empty<CPos>();
readonly MapCache cache;
readonly ModData modData;
IReadOnlyPackage package;
public readonly string Uid;
public string PackageName { get; private set; }
IReadOnlyPackage package;
public IReadOnlyPackage Package
{
get
{
package ??= parentPackage.OpenPackage(PackageName, modData.ModFiles);
return package;
}
private set => package = value;
public string Path { get; private set; }
void LoadPackage()
{
if (package == null && parentPackage != null)
package = parentPackage.OpenPackage(Path, modData.ModFiles);
}
public Map ToMap()
{
LoadPackage();
using (new PerfTimer("Map"))
return new Map(modData, package);
}
IReadOnlyPackage parentPackage;
@@ -317,9 +321,28 @@ namespace OpenRA
};
}
public void UpdateFromMap(IReadOnlyPackage p, IReadOnlyPackage parent, MapClassification classification,
string[] mapCompatibility, MapGridType gridType, IEnumerable<List<MiniYamlNode>> modDataRules)
/// <summary>
/// Updates internal state from a map without taking ownership of its package.
/// A new copy of the map package will be opened lazily when needed.
/// </summary>
public void UpdateFromMapWithoutOwningPackage(IReadOnlyPackage p, IReadOnlyPackage parent, MapClassification classification,
MapGridType? gridType = null, IEnumerable<List<MiniYamlNode>> modDataRules = null)
{
UpdateFromMap(p, classification, gridType, modDataRules);
parentPackage = parent;
package = null;
}
/// <summary>
/// Updates internal state from a map and takes ownership of its package.
/// The package remains in memory and must not be disposed.
/// </summary>
public void UpdateFromMap(IReadOnlyPackage p, MapClassification classification,
MapGridType? gridType = null, IEnumerable<List<MiniYamlNode>> modDataRules = null)
{
Path = p.Name;
package = p;
Dictionary<string, MiniYaml> yaml;
using (var yamlStream = p.GetStream("map.yaml"))
{
@@ -329,12 +352,9 @@ namespace OpenRA
yaml = new MiniYaml(null, MiniYaml.FromStream(yamlStream, $"{p.Name}:map.yaml", stringPool: cache.StringPool)).ToDictionary();
}
PackageName = p.Name;
parentPackage = parent;
var newData = innerData.Clone();
newData.GridType = gridType;
newData.Class = classification;
newData.GridType = gridType ?? modData.Manifest.Get<MapGrid>().Type;
if (yaml.TryGetValue("MapFormat", out var temp))
{
@@ -368,7 +388,7 @@ namespace OpenRA
if (yaml.TryGetValue("MapFormat", out temp))
newData.MapFormat = FieldLoader.GetValue<int>("MapFormat", temp.Value);
newData.Status = mapCompatibility == null || mapCompatibility.Contains(requiresMod) ?
newData.Status = modData.Manifest.MapCompatibility.Contains(requiresMod) ?
MapStatus.Available : MapStatus.Unavailable;
try
@@ -420,7 +440,7 @@ namespace OpenRA
innerData = newData;
}
public void UpdateRemoteSearch(MapStatus status, MiniYaml yaml, string[] mapCompatibility, Action<MapPreview> parseMetadata = null)
public void UpdateRemoteSearch(MapStatus status, MiniYaml yaml, Action<MapPreview> parseMetadata = null)
{
var newData = innerData.Clone();
newData.Status = status;
@@ -478,7 +498,7 @@ namespace OpenRA
// Map is for a different mod: update its information so it can be displayed
// in the cross-mod server browser UI, but mark it as unavailable so it can't
// be selected in a server for the current mod.
if (!mapCompatibility.Contains(r.game_mod))
if (!modData.Manifest.MapCompatibility.Contains(r.game_mod))
newData.Status = MapStatus.Unavailable;
}
catch (Exception e)
@@ -553,12 +573,12 @@ namespace OpenRA
mapInstallPackage.Update(mapFilename, fileStream.ToArray());
Log.Write("debug", $"Downloaded map to '{mapFilename}'");
var package = mapInstallPackage.OpenPackage(mapFilename, modData.ModFiles);
if (package == null)
var p = mapInstallPackage.OpenPackage(mapFilename, modData.ModFiles);
if (p == null)
innerData.Status = MapStatus.DownloadError;
else
{
UpdateFromMap(package, mapInstallPackage, MapClassification.User, null, GridType, null);
UpdateFromMapWithoutOwningPackage(p, mapInstallPackage, MapClassification.User, GridType);
Game.RunAfterTick(onSuccess);
}
}
@@ -577,11 +597,6 @@ namespace OpenRA
}
public void Dispose()
{
DisposePackage();
}
public void DisposePackage()
{
if (package != null)
{
@@ -593,14 +608,15 @@ namespace OpenRA
public void Delete()
{
Invalidate();
(parentPackage as IReadWritePackage)?.Delete(Package.Name);
(parentPackage as IReadWritePackage)?.Delete(Path);
}
Stream IReadOnlyFileSystem.Open(string filename)
{
// Explicit package paths never refer to a map
if (!filename.Contains('|') && Package.Contains(filename))
return Package.GetStream(filename);
LoadPackage();
if (!filename.Contains('|') && package.Contains(filename))
return package.GetStream(filename);
return modData.DefaultFileSystem.Open(filename);
}
@@ -616,7 +632,8 @@ namespace OpenRA
// Explicit package paths never refer to a map
if (!filename.Contains('|'))
{
s = Package.GetStream(filename);
LoadPackage();
s = package.GetStream(filename);
if (s != null)
return true;
}
@@ -627,7 +644,8 @@ namespace OpenRA
bool IReadOnlyFileSystem.Exists(string filename)
{
// Explicit package paths never refer to a map
if (!filename.Contains('|') && Package.Contains(filename))
LoadPackage();
if (!filename.Contains('|') && package.Contains(filename))
return true;
return modData.DefaultFileSystem.Exists(filename);