Add support for colored emojis

Author: nicoco007

BeatSaberMarkupLanguage/Config.cs

@@ -13,5 +13,7 @@ public class Config
         [NonNullable]
         [UseConverter(typeof(ListConverter<string>))]
         public virtual List<string> HiddenTabs { get; set; } = new List<string>();
+
+        public virtual bool UseColoredEmoji { get; set; } = true;
     }
 }

BeatSaberMarkupLanguage/Harmony Patches/EmojiSupport.cs

@@ -0,0 +1,38 @@
+using System.Collections.Generic;
+using System.Reflection.Emit;
+using HarmonyLib;
+using TMPro;
+using UnityEngine;
+
+namespace BeatSaberMarkupLanguage.Harmony_Patches
+{
+    [HarmonyPatch]
+    internal class EmojiSupport
+    {
+        [HarmonyPatch(typeof(TMP_FontAsset), nameof(TMP_FontAsset.CreateFontAssetInstance))]
+        [HarmonyTranspiler]
+        public static IEnumerable<CodeInstruction> TMP_FontAsset_CreateFontAssetInstance_Transpiler(IEnumerable<CodeInstruction> instructions)
+        {
+            return new CodeMatcher(instructions)
+                .MatchForward(
+                    false,
+                    new CodeMatch(OpCodes.Ldstr, "TextMeshPro/Sprite"), // This shader is not included in the game build.
+                    new CodeMatch(i => i.Calls(AccessTools.DeclaredMethod(typeof(Shader), nameof(Shader.Find)))),
+                    new CodeMatch(OpCodes.Newobj))
+                .SetAndAdvance(OpCodes.Nop, null)
+                .SetAndAdvance(OpCodes.Nop, null)
+                .SetAndAdvance(OpCodes.Call, AccessTools.DeclaredMethod(typeof(EmojiSupport), nameof(GetSpriteMaterial)))
+                .InstructionEnumeration();
+        }
+
+        private static Material GetSpriteMaterial()
+        {
+            // This is the material used for ImageViews. It won't support all of TMP's features but curves correctly.
+            return new Material(Utilities.ImageResources.NoGlowMat)
+            {
+                name = "TextMeshPro Sprite No Glow",
+                mainTexture = null,
+            };
+        }
+    }
+}

BeatSaberMarkupLanguage/Plugin.cs

@@ -3,12 +3,14 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Threading.Tasks;
-using BeatSaberMarkupLanguage.Harmony_Patches;
 using BeatSaberMarkupLanguage.Util;
 using HarmonyLib;
 using IPA;
 using IPA.Config.Stores;
 using TMPro;
+using UnityEngine;
+using UnityEngine.TextCore;
+using UnityEngine.TextCore.LowLevel;
 using Conf = IPA.Config.Config;
 using IPALogger = IPA.Logging.Logger;
 
@@ -58,18 +60,6 @@ public void OnExit()
         private async Task LoadAndSetUpFontFallbacksAsync()
         {
             await FontManager.AsyncLoadSystemFonts();
-            await MainSystemInitAwaiter.WaitForMainSystemInitAsync();
-
-            TMP_FontAsset[] fontAssets = FontManager.CreateFallbackFonts(FontNamesToLoad);
-
-            if (fontAssets.Length == 0)
-            {
-                Logger.Log.Error("Failed to find any fallback fonts");
-                return;
-            }
-
-            Logger.Log.Debug("Waiting for default font presence");
-
             await MainMenuAwaiter.WaitForMainMenuAsync();
 
             Logger.Log.Debug("Setting up default font fallbacks");
@@ -78,8 +68,20 @@ private async Task LoadAndSetUpFontFallbacksAsync()
             TMP_FontAsset mainTextFont = BeatSaberUI.MainTextFont;
             mainTextFont.fallbackFontAssets.RemoveAll((asset) => FontNamesToRemove.Contains(asset.name));
             mainTextFont.fallbackFontAssetTable.RemoveAll((asset) => FontNamesToRemove.Contains(asset.name));
-            mainTextFont.fallbackFontAssetTable.AddRange(fontAssets);
             mainTextFont.boldSpacing = 2.2f; // default bold spacing is rather  w i d e
+
+            if (Config.UseColoredEmoji && FontManager.TryGetFontByFullName("Segoe UI Emoji", out Font font))
+            {
+                TMP_FontAsset emoji = TMP_FontAsset.CreateFontAsset(font, 90, 9, GlyphRenderMode.COLOR, 4096, 4096);
+                emoji.name = "Segoe UI Emoji (Color)";
+                FaceInfo faceInfo = emoji.faceInfo;
+                faceInfo.scale = 0.85f;
+                emoji.faceInfo = faceInfo;
+
+                mainTextFont.fallbackFontAssetTable.Add(emoji);
+            }
+
+            mainTextFont.fallbackFontAssetTable.AddRange(FontManager.CreateFallbackFonts(FontNamesToLoad));
         }
     }
 }