390 lines
13 KiB
C#
390 lines
13 KiB
C#
using Lidgren.Network;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Reflection;
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using System.Text;
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using Microsoft.Xna.Framework;
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namespace Barotrauma
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{
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public class Pair<T1, T2>
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{
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public T1 First { get; set; }
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public T2 Second { get; set; }
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public Pair(T1 first, T2 second)
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{
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First = first;
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Second = second;
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}
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}
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public class Triplet<T1, T2, T3>
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{
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public T1 First { get; set; }
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public T2 Second { get; set; }
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public T3 Third { get; set; }
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public Triplet(T1 first, T2 second, T3 third)
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{
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First = first;
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Second = second;
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Third = third;
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}
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}
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public static partial class ToolBox
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{
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static internal class Epoch
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{
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private static readonly DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
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/// <summary>
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/// Returns the current Unix Epoch
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/// </summary>
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public static int Now
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{
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get
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{
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return (int)(DateTime.UtcNow.Subtract(epoch).TotalSeconds);
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}
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}
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/// <summary>
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/// Convert an epoch to a datetime
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/// </summary>
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public static DateTime ToDateTime(decimal unixTime)
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{
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return epoch.AddSeconds((long)unixTime);
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}
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/// <summary>
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/// Convert a DateTime to a unix time
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/// </summary>
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public static uint FromDateTime(DateTime dt)
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{
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return (uint)(dt.Subtract(epoch).TotalSeconds);
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}
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}
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public static bool IsProperFilenameCase(string filename)
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{
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//File case only matters on Linux where the filesystem is case-sensitive, so we don't need these errors in release builds.
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//It also seems Path.GetFullPath may return a path with an incorrect case on Windows when the case of any of the game's
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//parent folders have been changed.
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#if !DEBUG && !LINUX
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return true;
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#endif
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char[] delimiters = { '/', '\\' };
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string[] subDirs = filename.Split(delimiters);
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string originalFilename = filename;
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filename = "";
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for (int i = 0; i < subDirs.Length - 1; i++)
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{
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filename += subDirs[i] + "/";
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if (i == subDirs.Length - 2)
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{
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string[] filePaths = Directory.GetFiles(filename);
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if (filePaths.Any(s => s.Equals(filename + subDirs[i + 1], StringComparison.Ordinal)))
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{
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return true;
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}
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else if (filePaths.Any(s => s.Equals(filename + subDirs[i + 1], StringComparison.OrdinalIgnoreCase)))
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{
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DebugConsole.ThrowError(originalFilename + " has incorrect case!");
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return false;
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}
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}
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string[] dirPaths = Directory.GetDirectories(filename);
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if (!dirPaths.Any(s => s.Equals(filename + subDirs[i + 1], StringComparison.Ordinal)))
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{
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if (dirPaths.Any(s => s.Equals(filename + subDirs[i + 1], StringComparison.OrdinalIgnoreCase)))
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{
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DebugConsole.ThrowError(originalFilename + " has incorrect case!");
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}
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else
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{
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DebugConsole.ThrowError(originalFilename + " doesn't exist!");
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}
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return false;
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}
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}
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return true;
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}
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public static string LimitString(string str, int maxCharacters)
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{
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if (str == null || maxCharacters < 0) return null;
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if (maxCharacters < 4 || str.Length <= maxCharacters) return str;
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return str.Substring(0, maxCharacters - 3) + "...";
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}
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public static string RandomSeed(int length)
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{
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var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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return new string(
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Enumerable.Repeat(chars, length)
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.Select(s => s[Rand.Int(s.Length)])
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.ToArray());
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}
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public static int StringToInt(string str)
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{
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str = str.Substring(0, Math.Min(str.Length, 32));
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str = str.PadLeft(4, 'a');
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byte[] asciiBytes = Encoding.ASCII.GetBytes(str);
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for (int i = 4; i < asciiBytes.Length; i++)
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{
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asciiBytes[i % 4] ^= asciiBytes[i];
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}
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return BitConverter.ToInt32(asciiBytes, 0);
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}
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/// <summary>
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/// a method for changing inputtypes with old names to the new ones to ensure backwards compatibility with older subs
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/// </summary>
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public static string ConvertInputType(string inputType)
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{
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if (inputType == "ActionHit" || inputType == "Action") return "Use";
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if (inputType == "SecondaryHit" || inputType == "Secondary") return "Aim";
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return inputType;
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}
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// Convert an RGB value into an HLS value.
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public static Vector3 RgbToHLS(Vector3 color)
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{
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double h, l, s;
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double double_r = color.X;
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double double_g = color.Y;
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double double_b = color.Z;
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// Get the maximum and minimum RGB components.
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double max = double_r;
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if (max < double_g) max = double_g;
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if (max < double_b) max = double_b;
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double min = double_r;
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if (min > double_g) min = double_g;
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if (min > double_b) min = double_b;
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double diff = max - min;
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l = (max + min) / 2;
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if (Math.Abs(diff) < 0.00001)
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{
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s = 0;
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h = 0; // H is really undefined.
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}
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else
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{
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if (l <= 0.5) s = diff / (max + min);
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else s = diff / (2 - max - min);
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double r_dist = (max - double_r) / diff;
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double g_dist = (max - double_g) / diff;
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double b_dist = (max - double_b) / diff;
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if (double_r == max) h = b_dist - g_dist;
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else if (double_g == max) h = 2 + r_dist - b_dist;
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else h = 4 + g_dist - r_dist;
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h = h * 60;
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if (h < 0) h += 360;
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}
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return new Vector3((float)h, (float)l, (float)s);
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}
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/// <summary>
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/// Calculates the minimum number of single-character edits (i.e. insertions, deletions or substitutions) required to change one string into the other
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/// </summary>
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public static int LevenshteinDistance(string s, string t)
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{
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int n = s.Length;
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int m = t.Length;
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int[,] d = new int[n + 1, m + 1];
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if (n == 0 || m == 0) return 0;
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for (int i = 0; i <= n; d[i, 0] = i++) ;
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for (int j = 0; j <= m; d[0, j] = j++) ;
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for (int i = 1; i <= n; i++)
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{
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for (int j = 1; j <= m; j++)
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{
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int cost = (t[j - 1] == s[i - 1]) ? 0 : 1;
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d[i, j] = Math.Min(
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Math.Min(d[i - 1, j] + 1, d[i, j - 1] + 1),
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d[i - 1, j - 1] + cost);
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}
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}
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return d[n, m];
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}
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public static string SecondsToReadableTime(float seconds)
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{
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if (seconds < 60.0f)
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{
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return (int)seconds + " s";
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}
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else
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{
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int m = (int)(seconds / 60.0f);
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int s = (int)(seconds % 60.0f);
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return s == 0 ?
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m + " m" :
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m + " m " + s + " s";
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}
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}
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private static Dictionary<string, List<string>> cachedLines = new Dictionary<string, List<string>>();
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public static string GetRandomLine(string filePath)
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{
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List<string> lines;
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if (cachedLines.ContainsKey(filePath))
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{
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lines = cachedLines[filePath];
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}
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else
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{
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try
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{
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using (StreamReader file = new StreamReader(filePath))
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{
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lines = File.ReadLines(filePath).ToList();
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cachedLines.Add(filePath, lines);
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if (lines.Count == 0)
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{
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DebugConsole.ThrowError("File \"" + filePath + "\" is empty!");
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return "";
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}
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}
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}
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catch (Exception e)
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{
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DebugConsole.ThrowError("Couldn't open file \"" + filePath + "\"!", e);
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return "";
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}
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}
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if (lines.Count == 0) return "";
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return lines[Rand.Range(0, lines.Count, Rand.RandSync.Server)];
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}
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/// <summary>
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/// Reads a number of bits from the buffer and inserts them to a new NetBuffer instance
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/// </summary>
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public static NetBuffer ExtractBits(this NetBuffer originalBuffer, int numberOfBits)
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{
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var buffer = new NetBuffer();
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byte[] data = new byte[(int)Math.Ceiling(numberOfBits / (double)8)];
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originalBuffer.ReadBits(data, 0, numberOfBits);
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buffer.Write(data);
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return buffer;
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}
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public static T SelectWeightedRandom<T>(IList<T> objects, IList<float> weights, Rand.RandSync randSync)
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{
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return SelectWeightedRandom(objects, weights, Rand.GetRNG(randSync));
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}
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public static T SelectWeightedRandom<T>(IList<T> objects, IList<float> weights, Random random)
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{
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if (objects.Count == 0) return default(T);
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if (objects.Count != weights.Count)
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{
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DebugConsole.ThrowError("Error in SelectWeightedRandom, number of objects does not match the number of weights.\n" + Environment.StackTrace);
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return objects[0];
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}
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float totalWeight = weights.Sum();
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float randomNum = (float)(random.NextDouble() * totalWeight);
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for (int i = 0; i < objects.Count; i++)
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{
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if (randomNum <= weights[i])
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{
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return objects[i];
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}
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randomNum -= weights[i];
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}
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return default(T);
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}
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public static UInt32 StringToUInt32Hash(string str, MD5 md5)
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{
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//calculate key based on MD5 hash instead of string.GetHashCode
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//to ensure consistent results across platforms
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byte[] inputBytes = Encoding.ASCII.GetBytes(str);
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byte[] hash = md5.ComputeHash(inputBytes);
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UInt32 key = (UInt32)((str.Length & 0xff) << 24); //could use more of the hash here instead?
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key |= (UInt32)(hash[hash.Length - 3] << 16);
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key |= (UInt32)(hash[hash.Length - 2] << 8);
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key |= (UInt32)(hash[hash.Length - 1]);
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return key;
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}
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/// <summary>
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/// Returns a new instance of the class with all properties and fields copied.
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/// </summary>
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public static T CreateCopy<T>(this T source, BindingFlags flags = BindingFlags.Instance | BindingFlags.Public) where T : new() => CopyValues(source, new T(), flags);
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public static T CopyValuesTo<T>(this T source, T target, BindingFlags flags = BindingFlags.Instance | BindingFlags.Public) => CopyValues(source, target, flags);
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/// <summary>
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/// Copies the values of the source to the destination. May not work, if the source is of higher inheritance class than the destination. Does not work with virtual properties.
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/// </summary>
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public static T CopyValues<T>(T source, T destination, BindingFlags flags = BindingFlags.Instance | BindingFlags.Public)
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{
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if (source == null)
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{
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throw new Exception("Failed to copy object. Source is null.");
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}
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if (destination == null)
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{
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throw new Exception("Failed to copy object. Destination is null.");
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}
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Type type = source.GetType();
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var properties = type.GetProperties(flags);
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foreach (var property in properties)
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{
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if (property.CanWrite)
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{
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property.SetValue(destination, property.GetValue(source, null), null);
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}
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}
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var fields = type.GetFields(flags);
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foreach (var field in fields)
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{
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field.SetValue(destination, field.GetValue(source));
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}
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// Check that the fields match.Uncomment to apply the test, if in doubt.
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//if (fields.Any(f => { var value = f.GetValue(destination); return value == null || !value.Equals(f.GetValue(source)); }))
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//{
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// throw new Exception("Failed to copy some of the fields.");
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//}
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return destination;
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}
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}
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}
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