From 15e7cce264ed3c31cf03a29a7cadd241abbf030f Mon Sep 17 00:00:00 2001
From: Henry Lin <henry.ys.lin@gmail.com>
Date: Sat, 22 May 2021 14:14:41 +0800
Subject: [PATCH] Added seed setting, fixed mod ignoring
 IncreaseFirstObjectVisibility

---
 osu.Game.Rulesets.Osu/Mods/OsuModTarget.cs | 116 +++++++++++++++++++--
 1 file changed, 110 insertions(+), 6 deletions(-)

diff --git a/osu.Game.Rulesets.Osu/Mods/OsuModTarget.cs b/osu.Game.Rulesets.Osu/Mods/OsuModTarget.cs
index 412b7049ea..3fe0161742 100644
--- a/osu.Game.Rulesets.Osu/Mods/OsuModTarget.cs
+++ b/osu.Game.Rulesets.Osu/Mods/OsuModTarget.cs
@@ -6,15 +6,23 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Audio.Track;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Utils;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Configuration;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Online.Multiplayer;
+using osu.Game.Overlays.Settings;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Objects;
@@ -37,6 +45,13 @@ namespace osu.Game.Rulesets.Osu.Mods
         public override string Description => @"Practice keeping up with the beat of the song.";
         public override double ScoreMultiplier => 1;
 
+        [SettingSource("Seed", "Seed for random circle placement", SettingControlType = typeof(OsuModTargetSettingsControl))]
+        public Bindable<int?> Seed { get; } = new Bindable<int?>
+        {
+            Default = null,
+            Value = null
+        };
+
         public void ApplyToHealthProcessor(HealthProcessor healthProcessor)
         {
             // Sudden death
@@ -50,7 +65,14 @@ namespace osu.Game.Rulesets.Osu.Mods
 
         public override void ApplyToBeatmap(IBeatmap beatmap)
         {
-            base.ApplyToBeatmap(beatmap);
+            Seed.Value ??= RNG.Next();
+
+            var rng = new Random(Seed.Value.GetValueOrDefault());
+
+            float nextSingle(float max = 1f)
+            {
+                return (float)(rng.NextDouble() * max);
+            }
 
             var osuBeatmap = (OsuBeatmap)beatmap;
             var origHitObjects = osuBeatmap.HitObjects.OrderBy(x => x.StartTime).ToList();
@@ -153,13 +175,13 @@ namespace osu.Game.Rulesets.Osu.Mods
             }
 
             // Position all hit circles
-            var direction = MathHelper.TwoPi * RNG.NextSingle();
+            var direction = MathHelper.TwoPi * nextSingle();
             for (int i = 0; i < hitObjects.Count; i++)
             {
                 var x = hitObjects[i];
                 if (i == 0)
                 {
-                    x.Position = new Vector2(RNG.NextSingle(OsuPlayfield.BASE_SIZE.X), RNG.NextSingle(OsuPlayfield.BASE_SIZE.Y));
+                    x.Position = new Vector2(nextSingle(OsuPlayfield.BASE_SIZE.X), nextSingle(OsuPlayfield.BASE_SIZE.Y));
                 }
                 else
                 {
@@ -185,13 +207,15 @@ namespace osu.Game.Rulesets.Osu.Mods
                     x.Position = newPosition;
 
                     if (x.LastInCombo)
-                        direction = MathHelper.TwoPi * RNG.NextSingle();
+                        direction = MathHelper.TwoPi * nextSingle();
                     else
-                        direction += distance / MAX_DISTANCE * (RNG.NextSingle() * MathHelper.TwoPi - MathHelper.Pi);
+                        direction += distance / MAX_DISTANCE * (nextSingle() * MathHelper.TwoPi - MathHelper.Pi);
                 }
             }
 
             osuBeatmap.HitObjects = hitObjects;
+
+            base.ApplyToBeatmap(beatmap);
         }
 
         /// <summary>
@@ -233,7 +257,7 @@ namespace osu.Game.Rulesets.Osu.Mods
             return samples;
         }
 
-        protected override void ApplyIncreasedVisibilityState(DrawableHitObject hitObject, ArmedState state)
+        protected override void ApplyIncreasedVisibilityState(DrawableHitObject drawable, ArmedState state)
         {
         }
 
@@ -389,4 +413,84 @@ namespace osu.Game.Rulesets.Osu.Mods
             }
         }
     }
+
+    public class OsuModTargetSettingsControl : SettingsItem<int?>
+    {
+        protected override Drawable CreateControl() => new SeedControl
+        {
+            RelativeSizeAxes = Axes.X,
+            Margin = new MarginPadding { Top = 5 }
+        };
+
+        private sealed class SeedControl : CompositeDrawable, IHasCurrentValue<int?>
+        {
+            private readonly BindableWithCurrent<int?> current = new BindableWithCurrent<int?>();
+
+            public Bindable<int?> Current
+            {
+                get => current.Current;
+                set
+                {
+                    current.Current = value;
+                    seedNumberBox.Text = value.Value.ToString();
+                }
+            }
+
+            private readonly OsuNumberBox seedNumberBox;
+
+            public SeedControl()
+            {
+                AutoSizeAxes = Axes.Y;
+
+                InternalChildren = new[]
+                {
+                    new GridContainer
+                    {
+                        RelativeSizeAxes = Axes.X,
+                        AutoSizeAxes = Axes.Y,
+                        ColumnDimensions = new[]
+                        {
+                            new Dimension(),
+                            new Dimension(GridSizeMode.Absolute, 120)
+                        },
+                        RowDimensions = new[]
+                        {
+                            new Dimension(GridSizeMode.AutoSize)
+                        },
+                        Content = new[]
+                        {
+                            new Drawable[]
+                            {
+                                seedNumberBox = new OsuNumberBox
+                                {
+                                    RelativeSizeAxes = Axes.X,
+                                    CommitOnFocusLost = true,
+                                },
+                                new TriangleButton
+                                {
+                                    Width = 120,
+                                    Text = "Randomise",
+                                    Action = () => current.Value = RNG.Next(),
+                                    Origin = Anchor.CentreLeft,
+                                    Anchor = Anchor.CentreLeft,
+                                },
+                            }
+                        }
+                    }
+                };
+
+                seedNumberBox.Current.BindValueChanged(e =>
+                {
+                    if (int.TryParse(e.NewValue, out var intVal))
+                        current.Value = intVal;
+                    else
+                        current.Value = null;
+                });
+                current.BindValueChanged(e =>
+                {
+                    seedNumberBox.Text = e.NewValue.ToString();
+                });
+            }
+        }
+    }
 }