93 lines
3.4 KiB
C#
93 lines
3.4 KiB
C#
using Microsoft.Xna.Framework;
|
|
using System;
|
|
using Voronoi2;
|
|
|
|
namespace Barotrauma
|
|
{
|
|
public static class Rand
|
|
{
|
|
public enum RandSync
|
|
{
|
|
Unsynced = -1, //not synced, used for unimportant details like minor particle properties
|
|
Server = 0, //synced with the server (used for gameplay elements that the players can interact with)
|
|
ClientOnly = 1 //set to match between clients (used for misc elements that the server doesn't track, but clients want to match anyway)
|
|
}
|
|
|
|
private static readonly Random localRandom = new Random();
|
|
private static readonly Random[] syncedRandom = new MTRandom[] {
|
|
new MTRandom(), new MTRandom()
|
|
};
|
|
|
|
public static Random GetRNG(RandSync randSync)
|
|
{
|
|
return randSync == RandSync.Unsynced ? localRandom : syncedRandom[(int)randSync];
|
|
}
|
|
|
|
public static void SetSyncedSeed(int seed)
|
|
{
|
|
syncedRandom[(int)RandSync.Server] = new MTRandom(seed);
|
|
syncedRandom[(int)RandSync.ClientOnly] = new MTRandom(seed);
|
|
}
|
|
|
|
public static float Range(float minimum, float maximum, RandSync sync=RandSync.Unsynced)
|
|
{
|
|
return (float)(sync == RandSync.Unsynced ? localRandom : (syncedRandom[(int)sync])).NextDouble() * (maximum - minimum) + minimum;
|
|
}
|
|
|
|
public static double Range(double minimum, double maximum, RandSync sync = RandSync.Unsynced)
|
|
{
|
|
return (sync == RandSync.Unsynced ? localRandom : (syncedRandom[(int)sync])).NextDouble() * (maximum - minimum) + minimum;
|
|
}
|
|
|
|
public static int Range(int minimum, int maximum, RandSync sync = RandSync.Unsynced)
|
|
{
|
|
return (sync == RandSync.Unsynced ? localRandom : (syncedRandom[(int)sync])).Next(maximum - minimum) + minimum;
|
|
}
|
|
|
|
public static int Int(int max, RandSync sync = RandSync.Unsynced)
|
|
{
|
|
return (sync == RandSync.Unsynced ? localRandom : (syncedRandom[(int)sync])).Next(max);
|
|
}
|
|
|
|
public static Vector2 Vector(float length, RandSync sync = RandSync.Unsynced)
|
|
{
|
|
Vector2 randomVector = new Vector2(Range(-1.0f, 1.0f, sync), Range(-1.0f, 1.0f, sync));
|
|
|
|
if (randomVector.LengthSquared() < 0.001f) return new Vector2(0.0f, length);
|
|
|
|
return Vector2.Normalize(randomVector) * length;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Random float between 0 and 1.
|
|
/// </summary>
|
|
public static float Value(RandSync sync = RandSync.Unsynced)
|
|
{
|
|
return Range(0f, 1f, sync);
|
|
}
|
|
|
|
public static Color Color(bool randomAlpha = false, RandSync sync = RandSync.Unsynced)
|
|
{
|
|
if (randomAlpha)
|
|
{
|
|
return new Color(Value(sync), Value(sync), Value(sync), Value(sync));
|
|
}
|
|
else
|
|
{
|
|
return new Color(Value(sync), Value(sync), Value(sync));
|
|
}
|
|
}
|
|
|
|
public static DoubleVector2 Vector(double length, RandSync sync = RandSync.Unsynced)
|
|
{
|
|
double x = Range(-1.0, 1.0, sync);
|
|
double y = Range(-1.0, 1.0, sync);
|
|
|
|
double len = Math.Sqrt(x * x + y * y);
|
|
if (len < 0.00001) return new DoubleVector2(0.0, length);
|
|
|
|
return new DoubleVector2(x / len * length, y / len * length);
|
|
}
|
|
}
|
|
}
|