git.r.bdr.sh - rbdr/super-polarity/blob - Super Polarity/InputController.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Text;
   5 using Microsoft.Xna.Framework.Input;
   6
   7 namespace SuperPolarity
   8 {
   9     static class InputController
  10     {
  11         static Dictionary<string, List<Action<float>>> Listeners;
  12         static Dictionary<string, List<Keys>> RegisteredKeys;
  13         static Dictionary<string, List<Buttons>> RegisteredButtons;
  14         static List<string> BlockedKeys;
  15         static List<string> BlockedButtons;
  16
  17         static GamePadState InputGamePadState;
  18         static KeyboardState InputKeyboardState;
  19
  20         /*
  21          * Registered Events.
  22          *
  23          * You register: name of the event (ie. attack) and a key associated with it.
  24          * or button... Left Stick /always/ dispatches move event.
  25          */
  26
  27         static InputController()
  28         {
  29             Listeners = new Dictionary<string,List<Action<float>>>();
  30             RegisteredButtons = new Dictionary<string, List<Buttons>>();
  31             RegisteredKeys = new Dictionary<string, List<Keys>>();
  32             BlockedKeys = new List<string>();
  33             BlockedButtons = new List<string>();
  34             InputKeyboardState = new KeyboardState();
  35             InputGamePadState = new GamePadState();
  36         }
  37
  38         public static void UpdateInput()
  39         {
  40             DispatchMoveEvents();
  41             DispatchRegisteredEvents();
  42         }
  43
  44         public static void UpdateInput(bool highPriorityOnly)
  45         {
  46             Poll();
  47             DispatchPauseEvent();
  48             if (!highPriorityOnly)
  49             {
  50                 UpdateInput();
  51             }
  52         }
  53
  54         public static void DispatchPauseEvent()
  55         {
  56             // OK THIS IS ALL KINDS OF WRONG. THIS IS A PLACEHOLDER BECAUSE DEMO!
  57             var keyPressed = false;
  58             if ((InputKeyboardState.IsKeyDown(Keys.Enter) || InputGamePadState.IsButtonDown(Buttons.Start))) {
  59                 keyPressed = true;
  60                 if(!BlockedButtons.Contains("pause") && !BlockedKeys.Contains("pause"))
  61                 {
  62                     BlockedButtons.Add("pause");
  63                     BlockedKeys.Add("pause");
  64                     Console.WriteLine("Dispatch");
  65                     Dispatch("pause", 0);
  66                 }
  67             }
  68
  69             if (!keyPressed)
  70             {
  71                 BlockedButtons.Remove("pause");
  72                 BlockedKeys.Remove("pause");
  73             }
  74         }
  75
  76         private static void Poll()
  77         {
  78             InputGamePadState = GamePad.GetState(Microsoft.Xna.Framework.PlayerIndex.One);
  79             InputKeyboardState = Keyboard.GetState();
  80         }
  81
  82         public static void RegisterEventForKey(string eventName, Keys key)
  83         {
  84             List<Keys> newKeyList;
  85             if (!RegisteredKeys.ContainsKey(eventName))
  86             {
  87                 newKeyList = new List<Keys>();
  88                 RegisteredKeys.Add(eventName, newKeyList);
  89             }
  90
  91             RegisteredKeys.TryGetValue(eventName, out newKeyList);
  92
  93             newKeyList.Add(key);
  94         }
  95
  96         public static void RegisterEventForButton(string eventName, Buttons button)
  97         {
  98             List<Buttons> newButtonList;
  99             if (!RegisteredButtons.ContainsKey(eventName))
 100             {
 101                 newButtonList = new List<Buttons>();
 102                 RegisteredButtons.Add(eventName, newButtonList);
 103             }
 104
 105             RegisteredButtons.TryGetValue(eventName, out newButtonList);
 106
 107             newButtonList.Add(button);
 108         }
 109
 110         private static void DispatchRegisteredEvents()
 111         {
 112             var keyFired = false;
 113
 114             foreach (KeyValuePair<string,List<Keys>> entry in RegisteredKeys) {
 115                 keyFired = false;
 116                 foreach (Keys key in entry.Value)
 117                 {
 118                     if (InputKeyboardState.IsKeyDown(key))
 119                     {
 120                         if (!BlockedKeys.Contains(entry.Key))
 121                         {
 122                             BlockedKeys.Add(entry.Key);
 123                             Dispatch(entry.Key, 1);
 124                         }
 125                         keyFired = true;
 126                         break;
 127                     }
 128                 }
 129
 130                 if (!keyFired)
 131                 {
 132                     BlockedKeys.Remove(entry.Key);
 133                 }
 134             }
 135
 136             foreach (KeyValuePair<string, List<Buttons>> entry in RegisteredButtons)
 137             {
 138                 keyFired = false;
 139                 foreach (Buttons button in entry.Value)
 140                 {
 141                     if (InputGamePadState.IsButtonDown(button))
 142                     {
 143                         if (!BlockedButtons.Contains(entry.Key))
 144                         {
 145                             BlockedButtons.Add(entry.Key);
 146                             Dispatch(entry.Key, 1);
 147                         }
 148                         keyFired = true;
 149                         break;
 150                     };
 151                 }
 152
 153                 if (!keyFired)
 154                 {
 155                     BlockedButtons.Remove(entry.Key);
 156                 }
 157             }
 158         }
 159
 160         private static void DispatchMoveEvents()
 161         {
 162             float xMovement = 0.0f;
 163             float yMovement = 0.0f;
 164             // Dispatch the moveX / MoveY events every frame.
 165
 166             xMovement = InputGamePadState.ThumbSticks.Left.X;
 167             yMovement = -InputGamePadState.ThumbSticks.Left.Y;
 168
 169             if (InputKeyboardState.IsKeyDown(Keys.Left))
 170             {
 171                 xMovement = -1.0f;
 172             }
 173
 174             if (InputKeyboardState.IsKeyDown(Keys.Right))
 175             {
 176                 xMovement = 1.0f;
 177             }
 178
 179             if (InputKeyboardState.IsKeyDown(Keys.Up))
 180             {
 181                 yMovement = -1.0f;
 182             }
 183
 184             if (InputKeyboardState.IsKeyDown(Keys.Down))
 185             {
 186                 yMovement = 1.0f;
 187             }
 188
 189             Dispatch("moveX", xMovement);
 190             Dispatch("moveY", yMovement);
 191         }
 192
 193         public static void Bind(string eventName, Action<float> listener)
 194         {
 195             List<Action<float>> newListenerList;
 196             List<Action<float>> listenerList;
 197             bool               foundListeners;
 198
 199             if (!Listeners.ContainsKey(eventName)) {
 200                newListenerList = new List<Action<float>>();
 201                Listeners.Add(eventName, newListenerList);
 202             }
 203
 204             foundListeners = Listeners.TryGetValue(eventName, out listenerList);
 205
 206             listenerList.Add(listener);
 207         }
 208
 209         public static void Unbind(string eventName, Action<float> listener)
 210         {
 211             List<Action<float>> listenerList;
 212             bool foundListeners;
 213
 214             if (!Listeners.ContainsKey(eventName))
 215             {
 216                 return;
 217             }
 218
 219             foundListeners = Listeners.TryGetValue(eventName, out listenerList);
 220
 221             listenerList.Remove(listener);
 222         }
 223
 224         public static void Dispatch(string eventName, float value)
 225         {
 226             List<Action<float>> listenerList;
 227             bool foundListeners;
 228
 229             foundListeners = Listeners.TryGetValue(eventName, out listenerList);
 230
 231             if (!foundListeners)
 232             {
 233                 return;
 234             }
 235
 236             for (var i = listenerList.Count - 1; i >= 0; i--)
 237             {
 238                 listenerList[i](value);
 239             }
 240         }
 241
 242         public static void Unlock(string eventName)
 243         {
 244             BlockedButtons.Remove(eventName);
 245             BlockedKeys.Remove(eventName);
 246         }
 247     }
 248 }