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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework.Input;
namespace SuperPolarity
{
static class InputController
{
static Dictionary<string, List<Action<float>>> Listeners;
static Dictionary<string, List<Keys>> RegisteredKeys;
static Dictionary<string, List<Buttons>> RegisteredButtons;
static List<string> BlockedKeys;
static List<string> BlockedButtons;
static GamePadState InputGamePadState;
static KeyboardState InputKeyboardState;
/*
* Registered Events.
*
* You register: name of the event (ie. attack) and a key associated with it.
* or button... Left Stick /always/ dispatches move event.
*/
static InputController()
{
Listeners = new Dictionary<string,List<Action<float>>>();
RegisteredButtons = new Dictionary<string, List<Buttons>>();
RegisteredKeys = new Dictionary<string, List<Keys>>();
BlockedKeys = new List<string>();
BlockedButtons = new List<string>();
InputKeyboardState = new KeyboardState();
InputGamePadState = new GamePadState();
}
public static void UpdateInput()
{
DispatchMoveEvents();
DispatchRegisteredEvents();
}
public static void UpdateInput(bool highPriorityOnly)
{
Poll();
DispatchPauseEvent();
if (!highPriorityOnly)
{
UpdateInput();
}
}
public static void DispatchPauseEvent()
{
// OK THIS IS ALL KINDS OF WRONG. THIS IS A PLACEHOLDER BECAUSE DEMO!
var keyPressed = false;
if ((InputKeyboardState.IsKeyDown(Keys.Enter) || InputGamePadState.IsButtonDown(Buttons.RightStick))) {
keyPressed = true;
if(!BlockedButtons.Contains("pause") && !BlockedKeys.Contains("pause"))
{
BlockedButtons.Add("pause");
BlockedKeys.Add("pause");
Console.WriteLine("Dispatch");
Dispatch("pause", 0);
}
}
if (!keyPressed)
{
BlockedButtons.Remove("pause");
BlockedKeys.Remove("pause");
}
}
private static void Poll()
{
InputGamePadState = GamePad.GetState(Microsoft.Xna.Framework.PlayerIndex.One);
InputKeyboardState = Keyboard.GetState();
}
public static void RegisterEventForKey(string eventName, Keys key)
{
List<Keys> newKeyList;
if (!RegisteredKeys.ContainsKey(eventName))
{
newKeyList = new List<Keys>();
RegisteredKeys.Add(eventName, newKeyList);
}
RegisteredKeys.TryGetValue(eventName, out newKeyList);
newKeyList.Add(key);
}
public static void RegisterEventForButton(string eventName, Buttons button)
{
List<Buttons> newButtonList;
if (!RegisteredButtons.ContainsKey(eventName))
{
newButtonList = new List<Buttons>();
RegisteredButtons.Add(eventName, newButtonList);
}
RegisteredButtons.TryGetValue(eventName, out newButtonList);
newButtonList.Add(button);
}
private static void DispatchRegisteredEvents()
{
var keyFired = false;
foreach (KeyValuePair<string,List<Keys>> entry in RegisteredKeys) {
keyFired = false;
foreach (Keys key in entry.Value)
{
if (InputKeyboardState.IsKeyDown(key))
{
if (!BlockedKeys.Contains(entry.Key))
{
BlockedKeys.Add(entry.Key);
Dispatch(entry.Key, 1);
}
keyFired = true;
break;
}
}
if (!keyFired)
{
BlockedKeys.Remove(entry.Key);
}
}
foreach (KeyValuePair<string, List<Buttons>> entry in RegisteredButtons)
{
keyFired = false;
foreach (Buttons button in entry.Value)
{
if (InputGamePadState.IsButtonDown(button))
{
if (!BlockedButtons.Contains(entry.Key))
{
BlockedButtons.Add(entry.Key);
Dispatch(entry.Key, 1);
}
keyFired = true;
break;
};
}
if (!keyFired)
{
BlockedButtons.Remove(entry.Key);
}
}
}
private static void DispatchMoveEvents()
{
float xMovement = 0.0f;
float yMovement = 0.0f;
// Dispatch the moveX / MoveY events every frame.
xMovement = InputGamePadState.ThumbSticks.Left.X;
yMovement = -InputGamePadState.ThumbSticks.Left.Y;
if (InputKeyboardState.IsKeyDown(Keys.Left))
{
xMovement = -1.0f;
}
if (InputKeyboardState.IsKeyDown(Keys.Right))
{
xMovement = 1.0f;
}
if (InputKeyboardState.IsKeyDown(Keys.Up))
{
yMovement = -1.0f;
}
if (InputKeyboardState.IsKeyDown(Keys.Down))
{
yMovement = 1.0f;
}
Dispatch("moveX", xMovement);
Dispatch("moveY", yMovement);
}
public static void Bind(string eventName, Action<float> listener)
{
List<Action<float>> newListenerList;
List<Action<float>> listenerList;
bool foundListeners;
if (!Listeners.ContainsKey(eventName)) {
newListenerList = new List<Action<float>>();
Listeners.Add(eventName, newListenerList);
}
foundListeners = Listeners.TryGetValue(eventName, out listenerList);
listenerList.Add(listener);
}
public static void Unbind(string eventName, Action<float> listener)
{
List<Action<float>> listenerList;
bool foundListeners;
if (!Listeners.ContainsKey(eventName))
{
return;
}
foundListeners = Listeners.TryGetValue(eventName, out listenerList);
listenerList.Remove(listener);
}
public static void Dispatch(string eventName, float value)
{
List<Action<float>> listenerList;
bool foundListeners;
foundListeners = Listeners.TryGetValue(eventName, out listenerList);
if (!foundListeners)
{
return;
}
for (var i = listenerList.Count - 1; i >= 0; i--)
{
listenerList[i](value);
}
}
public static void Unlock(string eventName)
{
BlockedButtons.Remove(eventName);
BlockedKeys.Remove(eventName);
}
}
}
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