Added support for mouse input. Removed redundant keyboard state paramater for KeypressHandler, replaced with static field updated every frame.

MonoGameLibrary/Input/InputManager.cs

@@ -1,23 +1,37 @@
 using System;
 using System.Collections.Generic;
+using System.Transactions;
+using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Input;
 
 namespace MonoGameLibrary.Input;
 
 
 public static class InputManager {
-    private static Dictionary<Keys, List<InputEntry>> keyPressListeners = new();
-    private static Dictionary<Keys, List<InputEntry>> keyHoldListeners = new(); // The bool is for enabling/disabling that method
-    private static Dictionary<Keys, List<InputEntry>> keyReleaseListeners = new();
+    private static Dictionary<Keys, List<KeyboardInputEntry>> keyPressListeners = new();
+    private static Dictionary<Keys, List<KeyboardInputEntry>> keyHoldListeners = new(); // The bool is for enabling/disabling that method
+    private static Dictionary<Keys, List<KeyboardInputEntry>> keyReleaseListeners = new();
     
     private static Dictionary<string, InputEntry> labelDict = new();
     
-    private static KeyboardState oldState = Keyboard.GetState();
-    private static KeyboardState newState;
+    private static KeyboardState oldKBState = Keyboard.GetState();
+    private static KeyboardState newKBState;
+    public static KeyboardState KeyboardState => newKBState;
+
+    
+    private static MouseState oldMouseState = Mouse.GetState();
+    private static MouseState newMouseState;
+    public static MouseState MouseState => newMouseState;
+    
+    private static Dictionary<MouseButton, List<MouseInputEntry>> mousePressListeners = new();
+    private static Dictionary<MouseButton, List<MouseInputEntry>> mouseHoldListeners = new();
+    private static Dictionary<MouseButton, List<MouseInputEntry>> mouseReleaseListeners = new();
 
     // public static ConcurrentQueue<Action> inputEventQueue = new();
     
-    public delegate void KeypressHandler(KeyboardState state);
+    public delegate void KeypressHandler();
+    
+    public delegate void MouseHandler();
     
     private static int nextUnnamedId = 0;
     
@@ -32,14 +46,14 @@ public static class InputManager {
     public static void NextInputCycle() {
         Queue<KeypressHandler> inputEventQueue = new();
         
-        // Read
+        // Read Keyboard
         
-        newState = Keyboard.GetState();
-        Keys[] pressed = newState.GetPressedKeys();
-        Keys[] pressedLastFrame = oldState.GetPressedKeys();
+        newKBState = Keyboard.GetState();
+        Keys[] pressed = newKBState.GetPressedKeys();
+        Keys[] pressedLastFrame = oldKBState.GetPressedKeys();
 
         Array.ForEach(pressed, key => {
-            if (oldState.IsKeyUp(key)){
+            if (oldKBState.IsKeyUp(key)){
                 if (keyPressListeners.TryGetValue(key, out var pressHandlers)){
                     pressHandlers.ForEach(t => {
                         if (t.Enabled){
@@ -69,7 +83,7 @@ public static class InputManager {
                 return;
             }
 
-            if (newState.IsKeyUp(key)){
+            if (newKBState.IsKeyUp(key)){
                 if (keyReleaseListeners.TryGetValue(key, out var releaseHandlers))
                     releaseHandlers.ForEach(t => {
                         if (t.Enabled){
@@ -81,12 +95,47 @@ public static class InputManager {
                     });
             }
         });
-        oldState = newState;
+        oldKBState = newKBState;
+        
+        // Read Mouse
+        
+        newMouseState = Mouse.GetState();
+
+        List<MouseInputEntry> mouseHandlers = new List<MouseInputEntry>();
+
+        foreach (var button in ((MouseButton type, ButtonState current, ButtonState old)[])[
+                     (MouseButton.LEFT, newMouseState.LeftButton, oldMouseState.LeftButton),
+                     (MouseButton.RIGHT, newMouseState.RightButton, oldMouseState.RightButton), 
+                     (MouseButton.MIDDLE, newMouseState.MiddleButton, oldMouseState.MiddleButton)
+                 ])
+        {
+            if (button.current == ButtonState.Pressed){
+                if (button.old == ButtonState.Released){
+                    mousePressListeners.TryGetValue(button.type, out var pressHandlers);
+                    mouseHandlers.AddRange(pressHandlers ?? new List<MouseInputEntry>());
+                }
+                mouseHoldListeners.TryGetValue(button.type, out var holdHandlers);
+                mouseHandlers.AddRange(holdHandlers ?? new List<MouseInputEntry>());
+            }
+            else if (button.old == ButtonState.Pressed){
+                if (button.current == ButtonState.Released){
+                    mouseReleaseListeners.TryGetValue(button.type, out var releaseHandlers);
+                    mouseHandlers.AddRange(releaseHandlers ?? new List<MouseInputEntry>());
+                }
+            }
+        }
+        
+        mouseHandlers.ForEach(entry => inputEventQueue.Enqueue(entry.Action));
+        oldMouseState = newMouseState;
+        
+        
+        
+        
         
         // Execute
 
         foreach (KeypressHandler handler in inputEventQueue){
-            handler(newState);
+            handler();
         }
 }
     
@@ -98,17 +147,31 @@ public static class InputManager {
         if (label.StartsWith("!")){
             throw new ArgumentException("Label cannot start with !");
         }
-        InputEntry entry = new (label, key, action, timing, hook);
-        _addListener(entry);
+        KeyboardInputEntry entry = new (label, key, action, timing, hook);
+        _addListenerKB(entry);
     }
     
     public static void AddListener(Keys key, KeypressHandler action, InputTiming timing, InputListenerHook hook) {
-        InputEntry entry = new ($"!{Enum.GetName(typeof(Keys), key)}Handler{nextUnnamedId++}", key, action, timing, hook);
-       _addListener(entry);
+        KeyboardInputEntry entry = new ($"!{Enum.GetName(typeof(Keys), key)}Handler{nextUnnamedId++}", key, action, timing, hook);
+       _addListenerKB(entry);
     }
 
-    private static void _addListener(InputEntry entry) {
-        Dictionary<Keys, List<InputEntry>> workingDict;
+    public static void AddListener(string label, MouseButton button, KeypressHandler action, InputTiming timing, InputListenerHook hook) {
+        if (label.StartsWith("!")){
+            throw new ArgumentException("Label cannot start with !");
+        }
+        MouseInputEntry entry = new (label, button, action, timing, hook);
+        _addListenerMouse(entry);
+    }
+
+    public static void AddListener(MouseButton button, KeypressHandler action, InputTiming timing,
+        InputListenerHook hook) {
+        MouseInputEntry entry = new ($"!{Enum.GetName(typeof(MouseButton), button)}Handler{nextUnnamedId++}", button, action, timing, hook);
+        _addListenerMouse(entry);
+    }
+    
+    private static void _addListenerKB(KeyboardInputEntry entry) {
+        Dictionary<Keys, List<KeyboardInputEntry>> workingDict;
         
         switch (entry.Timing){
             case InputTiming.PRESS:
@@ -133,27 +196,76 @@ public static class InputManager {
         labelDict.Add(entry.Label, entry);
     }
 
+    private static void _addListenerMouse(MouseInputEntry entry) {
+        Dictionary<MouseButton, List<MouseInputEntry>> workingDict;
+        
+        switch (entry.Timing){
+            case InputTiming.PRESS:
+                workingDict = mousePressListeners;
+                break;
+            case InputTiming.HOLD:
+                workingDict = mouseHoldListeners;
+                break;
+            case InputTiming.RELEASE:
+                workingDict = mouseReleaseListeners;
+                break;
+            default:
+                throw new ArgumentOutOfRangeException(nameof(entry.Timing), entry.Timing, null);
+        }
+        
+        if (!workingDict.ContainsKey(entry.Button)){
+            workingDict.Add(entry.Button, new());
+        }
+        
+        workingDict[entry.Button].Add(entry);
+        
+        labelDict.Add(entry.Label, entry);
+    }
+    
+
     public static InputEntry GetEntry(string label) {
         return labelDict[label];
     }
     
-    public class InputEntry {
-        
+    public abstract class InputEntry {
         public string Label;
-        public Keys Key;
+        
         public KeypressHandler Action;
         public InputTiming Timing;
         public InputListenerHook Hook;
         
         public bool Enabled => Hook.Enabled;
 
-        public InputEntry(string label, Keys key, KeypressHandler action, InputTiming timing, InputListenerHook hook) {
-            Key = key;
+        public InputEntry(string label, KeypressHandler action, InputTiming timing, InputListenerHook hook) {
             Action = action;
             Timing = timing;
             Hook = hook;
             Label = label;
         }
     }
+
+    public class KeyboardInputEntry : InputEntry {
+        public Keys Key;
+
+        public KeyboardInputEntry(string label, Keys key, KeypressHandler action, InputTiming timing, InputListenerHook hook) : base(label, action, timing, hook) {
+            Key = key;
+        }
+    }
+
+    public class MouseInputEntry : InputEntry {
+        public MouseButton Button;
+
+        public MouseInputEntry(string label, MouseButton button, KeypressHandler action, InputTiming timing, InputListenerHook hook) : base(label, action, timing, hook) {
+            Button = button;
+        }
+    }
+
+    public enum MouseButton {
+        RIGHT,
+        LEFT,
+        MIDDLE
+    }
+    
+    
     // private static List<InputEntry> inputQueue = new();
 }