77 lines
2.7 KiB
C#
77 lines
2.7 KiB
C#
using System.Diagnostics;
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using System.Diagnostics.CodeAnalysis;
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using System.IO;
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using ServicePoint;
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using TanksServer.Graphics;
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namespace TanksServer.GameLogic;
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internal sealed class MapService
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{
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public const ushort TilesPerRow = 44;
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public const ushort TilesPerColumn = 20;
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public const ushort TileSize = 8;
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public const ushort PixelsPerRow = TilesPerRow * TileSize;
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public const ushort PixelsPerColumn = TilesPerColumn * TileSize;
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private readonly ConcurrentDictionary<string, MapPrototype> _mapPrototypes = new();
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private readonly ConcurrentDictionary<string, Bitmap> _mapPreviews = new();
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public IEnumerable<string> MapNames => _mapPrototypes.Keys;
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public Map Current { get; private set; }
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public MapService()
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{
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foreach (var file in Directory.EnumerateFiles("./assets/maps/", "*.txt"))
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LoadMapString(file);
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foreach (var file in Directory.EnumerateFiles("./assets/maps/", "*.png"))
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LoadMapPng(file);
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Current = GetRandomMap();
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}
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public bool TryGetPrototype(string name, [MaybeNullWhen(false)] out MapPrototype map)
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=> _mapPrototypes.TryGetValue(name, out map);
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public void SwitchTo(MapPrototype prototype) => Current = prototype.CreateInstance();
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public bool TryGetPreview(string name, [MaybeNullWhen(false)] out Bitmap pixelGrid)
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{
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if (_mapPreviews.TryGetValue(name, out pixelGrid))
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return true; // already generated
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if (!_mapPrototypes.TryGetValue(name, out var prototype))
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return false; // name not found
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pixelGrid = new Bitmap(PixelsPerRow, PixelsPerColumn);
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DrawMapStep.Draw(pixelGrid, prototype.CreateInstance());
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_mapPreviews.TryAdd(name, pixelGrid); // another thread may have added the map already
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return true; // new preview
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}
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private void LoadMapPng(string file)
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{
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var name = MapNameFromFilePath(file);
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var prototype = new SpriteMapPrototype(name, Sprite.FromImageFile(file));
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var added = _mapPrototypes.TryAdd(name, prototype);
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Debug.Assert(added);
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}
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private void LoadMapString(string file)
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{
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var name = MapNameFromFilePath(file);
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var map = File.ReadAllText(file).ReplaceLineEndings(string.Empty).Trim();
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var prototype = new TextMapPrototype(name, map);
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_mapPrototypes.TryAdd(name, prototype);
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}
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private static string MapNameFromFilePath(string filePath) => Path.GetFileName(filePath).ToUpperInvariant();
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private Map GetRandomMap()
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{
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var chosenMapIndex = Random.Shared.Next(_mapPrototypes.Count);
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var chosenMapName = _mapPrototypes.Keys.Skip(chosenMapIndex).First();
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return _mapPrototypes[chosenMapName].CreateInstance();
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}
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}
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