Fix Discord timestamp not reset on pause and resume.

Assets/Cryville/Crtr/DiscordController.cs

@@ -60,16 +60,43 @@ namespace Cryville.Crtr {
 			}, Callback);
 		}
 
+		string _detail;
+		double? _duration;
 		public void SetPlaying(string detail, double? duration) {
+			if (dc == null) return;
+			_detail = detail;
+			_duration = duration;
+			long now = (long)(DateTime.UtcNow - DateTime.UnixEpoch).TotalSeconds;
+			am.UpdateActivity(new Activity {
+				State = "Playing a chart",
+				Details = _detail,
+				Instance = true,
+				Timestamps = {
+					Start = now,
+					End = _duration == null ? 0 : now + (long)_duration,
+				},
+			}, Callback);
+		}
+
+		public void SetPaused() {
+			if (dc == null) return;
+			am.UpdateActivity(new Activity {
+				State = "Playing a chart (Paused)",
+				Details = _detail,
+				Instance = true,
+			}, Callback);
+		}
+
+		public void SetResume(double timestamp) {
 			if (dc == null) return;
 			long now = (long)(DateTime.UtcNow - DateTime.UnixEpoch).TotalSeconds;
 			am.UpdateActivity(new Activity {
 				State = "Playing a chart",
-				Details = detail,
+				Details = _detail,
 				Instance = true,
 				Timestamps = {
-					Start = now,
-					End = duration == null ? 0 : now + (long)duration,
+					Start = now - (long)timestamp,
+					End = _duration == null ? 0 : now + (long)_duration - (long)timestamp,
 				},
 			}, Callback);
 		}