f01f8d92b3
Reinitializing the initial cell info layer for the path search took a fair bit of time. We cache this initial setup so it only has to be done each time the map size changes. A CopyValuesFrom method in CellLayer is provided which copies values between layers by just copying the internal arrays for super speed. This speeds up InitCellInfo 10x.
132 lines
3.2 KiB
C#
132 lines
3.2 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Drawing;
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namespace OpenRA
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{
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// Represents a layer of "something" that covers the map
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public class CellLayer<T> : IEnumerable<T>
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{
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public readonly Size Size;
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public readonly TileShape Shape;
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public event Action<CPos> CellEntryChanged = null;
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readonly T[] entries;
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public CellLayer(Map map)
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: this(map.TileShape, new Size(map.MapSize.X, map.MapSize.Y)) { }
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public CellLayer(TileShape shape, Size size)
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{
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Size = size;
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Shape = shape;
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entries = new T[size.Width * size.Height];
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}
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public void CopyValuesFrom(CellLayer<T> anotherLayer)
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{
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if (Size != anotherLayer.Size || Shape != anotherLayer.Shape)
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throw new ArgumentException(
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"layers must have a matching size and shape.", "anotherLayer");
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if (CellEntryChanged != null)
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throw new InvalidOperationException(
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"Cannot copy values when there are listeners attached to the CellEntryChanged event.");
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Array.Copy(anotherLayer.entries, entries, entries.Length);
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}
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// Resolve an array index from cell coordinates
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int Index(CPos cell)
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{
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var uv = Map.CellToMap(Shape, cell);
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return Index(uv.X, uv.Y);
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}
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// Resolve an array index from map coordinates
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int Index(int u, int v)
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{
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return v * Size.Width + u;
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}
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/// <summary>Gets or sets the <see cref="OpenRA.CellLayer"/> using cell coordinates</summary>
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public T this[CPos cell]
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{
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get
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{
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return entries[Index(cell)];
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}
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set
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{
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entries[Index(cell)] = value;
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if (CellEntryChanged != null)
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CellEntryChanged(cell);
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}
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}
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/// <summary>Gets or sets the layer contents using raw map coordinates (not CPos!)</summary>
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public T this[int u, int v]
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{
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get
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{
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return entries[Index(u, v)];
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}
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set
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{
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entries[Index(u, v)] = value;
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if (CellEntryChanged != null)
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CellEntryChanged(Map.MapToCell(Shape, new CPos(u, v)));
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}
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}
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/// <summary>Clears the layer contents with a known value</summary>
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public void Clear(T clearValue)
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{
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for (var i = 0; i < entries.Length; i++)
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entries[i] = clearValue;
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}
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public IEnumerator<T> GetEnumerator()
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{
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return (IEnumerator<T>)entries.GetEnumerator();
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}
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IEnumerator IEnumerable.GetEnumerator()
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{
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return GetEnumerator();
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}
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}
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// Helper functions
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public static class CellLayer
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{
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/// <summary>Create a new layer by resizing another layer. New cells are filled with defaultValue.</summary>
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public static CellLayer<T> Resize<T>(CellLayer<T> layer, Size newSize, T defaultValue)
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{
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var result = new CellLayer<T>(layer.Shape, newSize);
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var width = Math.Min(layer.Size.Width, newSize.Width);
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var height = Math.Min(layer.Size.Height, newSize.Height);
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result.Clear(defaultValue);
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for (var j = 0; j < height; j++)
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for (var i = 0; i < width; i++)
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result[i, j] = layer[i, j];
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return result;
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}
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}
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}
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