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Code Issues Releases Wiki Activity

Make catch HR properly utilise the RNG

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This commit is contained in:
smoogipoo 2019-07-31 18:44:01 +09:00
parent ed4dda1936
commit fdc6a3958d
3 changed files with 127 additions and 112 deletions
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119
osu.Game.Rulesets.Catch/Beatmaps/CatchBeatmapProcessor.cs
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@ -10,6 +10,8 @@ using osu.Game.Rulesets.Catch.UI;
using osu.Game.Rulesets.Objects.Types;
using osuTK;
using osu.Game.Rulesets.Catch.MathUtils;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.Objects;
namespace osu.Game.Rulesets.Catch.Beatmaps
{
@ -26,7 +28,7 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
{
base.PostProcess();
applyPositionOffsets();
ApplyPositionOffsets(Beatmap);
initialiseHyperDash((List<CatchHitObject>)Beatmap.HitObjects);
@ -40,15 +42,23 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
}
}
private void applyPositionOffsets()
public static void ApplyPositionOffsets(IBeatmap beatmap, params Mod[] mods)
{
var rng = new FastRandom(RNG_SEED);
// todo: HardRock displacement should be applied here
foreach (var obj in Beatmap.HitObjects)
bool shouldApplyHardRockOffset = mods.Any(m => m is ModHardRock);
float? lastPosition = null;
double lastStartTime = 0;
foreach (var obj in beatmap.HitObjects)
{
switch (obj)
{
case Fruit fruit:
if (shouldApplyHardRockOffset)
applyHardRockOffset(fruit, ref lastPosition, ref lastStartTime, rng);
break;
case BananaShower bananaShower:
foreach (var banana in bananaShower.NestedHitObjects.OfType<Banana>())
{
@ -76,6 +86,107 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
}
}
private static void applyHardRockOffset(HitObject hitObject, ref float? lastPosition, ref double lastStartTime, FastRandom rng)
{
if (hitObject is JuiceStream stream)
{
lastPosition = stream.EndX;
lastStartTime = stream.EndTime;
return;
}
if (!(hitObject is Fruit))
return;
var catchObject = (CatchHitObject)hitObject;
float position = catchObject.X;
double startTime = hitObject.StartTime;
if (lastPosition == null)
{
lastPosition = position;
lastStartTime = startTime;
return;
}
float positionDiff = position - lastPosition.Value;
double timeDiff = startTime - lastStartTime;
if (timeDiff > 1000)
{
lastPosition = position;
lastStartTime = startTime;
return;
}
if (positionDiff == 0)
{
applyRandomOffset(ref position, timeDiff / 4d, rng);
catchObject.X = position;
return;
}
if (Math.Abs(positionDiff * CatchPlayfield.BASE_WIDTH) < timeDiff / 3d)
applyOffset(ref position, positionDiff);
catchObject.X = position;
lastPosition = position;
lastStartTime = startTime;
}
/// <summary>
/// Applies a random offset in a random direction to a position, ensuring that the final position remains within the boundary of the playfield.
/// </summary>
/// <param name="position">The position which the offset should be applied to.</param>
/// <param name="maxOffset">The maximum offset, cannot exceed 20px.</param>
/// <param name="rng">The random number generator.</param>
private static void applyRandomOffset(ref float position, double maxOffset, FastRandom rng)
{
bool right = rng.NextBool();
float rand = Math.Min(20, (float)rng.Next(0, Math.Max(0, maxOffset))) / CatchPlayfield.BASE_WIDTH;
if (right)
{
// Clamp to the right bound
if (position + rand <= 1)
position += rand;
else
position -= rand;
}
else
{
// Clamp to the left bound
if (position - rand >= 0)
position -= rand;
else
position += rand;
}
}
/// <summary>
/// Applies an offset to a position, ensuring that the final position remains within the boundary of the playfield.
/// </summary>
/// <param name="position">The position which the offset should be applied to.</param>
/// <param name="amount">The amount to offset by.</param>
private static void applyOffset(ref float position, float amount)
{
if (amount > 0)
{
// Clamp to the right bound
if (position + amount < 1)
position += amount;
}
else
{
// Clamp to the left bound
if (position + amount > 0)
position += amount;
}
}
private void initialiseHyperDash(List<CatchHitObject> objects)
{
List<CatchHitObject> objectWithDroplets = new List<CatchHitObject>();

8
osu.Game.Rulesets.Catch/MathUtils/FastRandom.cs
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@ -61,6 +61,14 @@ namespace osu.Game.Rulesets.Catch.MathUtils
/// <returns>The random value.</returns>
public int Next(int lowerBound, int upperBound) => (int)(lowerBound + NextDouble() * (upperBound - lowerBound));
/// <summary>
/// Generates a random integer value within the range [<paramref name="lowerBound"/>, <paramref name="upperBound"/>).
/// </summary>
/// <param name="lowerBound">The lower bound of the range.</param>
/// <param name="upperBound">The upper bound of the range.</param>
/// <returns>The random value.</returns>
public int Next(double lowerBound, double upperBound) => (int)(lowerBound + NextDouble() * (upperBound - lowerBound));
/// <summary>
/// Generates a random double value within the range [0, 1).
/// </summary>

112
osu.Game.Rulesets.Catch/Mods/CatchModHardRock.cs
View File

@ -1,121 +1,17 @@
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using osu.Framework.MathUtils;
using osu.Game.Rulesets.Catch.Objects;
using osu.Game.Rulesets.Catch.UI;
using osu.Game.Rulesets.Mods;
using System;
using osu.Game.Rulesets.Objects;
using osu.Game.Beatmaps;
using osu.Game.Rulesets.Catch.Beatmaps;
namespace osu.Game.Rulesets.Catch.Mods
{
public class CatchModHardRock : ModHardRock, IApplicableToHitObject
public class CatchModHardRock : ModHardRock, IApplicableToBeatmap
{
public override double ScoreMultiplier => 1.12;
public override bool Ranked => true;
private float? lastPosition;
private double lastStartTime;
public void ApplyToHitObject(HitObject hitObject)
{
if (hitObject is JuiceStream stream)
{
lastPosition = stream.EndX;
lastStartTime = stream.EndTime;
return;
}
if (!(hitObject is Fruit))
return;
var catchObject = (CatchHitObject)hitObject;
float position = catchObject.X;
double startTime = hitObject.StartTime;
if (lastPosition == null)
{
lastPosition = position;
lastStartTime = startTime;
return;
}
float positionDiff = position - lastPosition.Value;
double timeDiff = startTime - lastStartTime;
if (timeDiff > 1000)
{
lastPosition = position;
lastStartTime = startTime;
return;
}
if (positionDiff == 0)
{
applyRandomOffset(ref position, timeDiff / 4d);
catchObject.X = position;
return;
}
if (Math.Abs(positionDiff * CatchPlayfield.BASE_WIDTH) < timeDiff / 3d)
applyOffset(ref position, positionDiff);
catchObject.X = position;
lastPosition = position;
lastStartTime = startTime;
}
/// <summary>
/// Applies a random offset in a random direction to a position, ensuring that the final position remains within the boundary of the playfield.
/// </summary>
/// <param name="position">The position which the offset should be applied to.</param>
/// <param name="maxOffset">The maximum offset, cannot exceed 20px.</param>
private void applyRandomOffset(ref float position, double maxOffset)
{
bool right = RNG.NextBool();
float rand = Math.Min(20, (float)RNG.NextDouble(0, Math.Max(0, maxOffset))) / CatchPlayfield.BASE_WIDTH;
if (right)
{
// Clamp to the right bound
if (position + rand <= 1)
position += rand;
else
position -= rand;
}
else
{
// Clamp to the left bound
if (position - rand >= 0)
position -= rand;
else
position += rand;
}
}
/// <summary>
/// Applies an offset to a position, ensuring that the final position remains within the boundary of the playfield.
/// </summary>
/// <param name="position">The position which the offset should be applied to.</param>
/// <param name="amount">The amount to offset by.</param>
private void applyOffset(ref float position, float amount)
{
if (amount > 0)
{
// Clamp to the right bound
if (position + amount < 1)
position += amount;
}
else
{
// Clamp to the left bound
if (position + amount > 0)
position += amount;
}
}
public void ApplyToBeatmap(IBeatmap beatmap) => CatchBeatmapProcessor.ApplyPositionOffsets(beatmap, this);
}
}