feat: key history algorithm

Assets/Scripts/Domain/Input/GeminadaReader.cs

@@ -0,0 +1,57 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Domain.Input {
+	public class GeminadaReader : InputReader {
+		protected override int Key { get; } = 0x33;
+		private int LKey { get; } = 76;
+
+		private bool _lPressed;
+		private bool _lWasPressed;
+		private bool _dotPressed;
+		private bool _dotWasPressed;
+
+		private List<int> _lastPresses;
+
+		public override void UpdateInput() {
+			if (UpdateLInput()) {
+				if (_lastPresses.Count == 0) {
+					_lastPresses.Add(LKey);
+				} else if (_lastPresses.Count >= 2) {
+					if (_lastPresses[^1] == Key && _lastPresses[^2] == LKey) {
+						IsPressed = true;
+					}
+				}
+			}
+			UpdateDotInput();
+		}
+
+		private bool UpdateDotInput() {
+			_dotWasPressed = _dotPressed;
+			short dotState = Win32API.GetAsyncKeyState(Key);
+
+			if (!_dotWasPressed && dotState != 0) {
+				_dotPressed = true;
+				return true;
+			}
+			if (_dotPressed && dotState == 0) {
+				_dotPressed = false;
+			}
+			return false;
+		}
+
+		private bool UpdateLInput() {
+			_lWasPressed = _lPressed;
+			short lState = Win32API.GetAsyncKeyState(LKey);
+
+			if (!_lWasPressed && lState != 0) {
+				_lPressed = true;
+				return true;
+			}
+			if (_lPressed && lState == 0) {
+				_lPressed = false;
+			}
+			return false;
+		}
+	}
+}