InputSystem|Client: Maintain id and name maps for PlayerImpulse lookup

doomsday/client/include/ui/p_control.h

@@ -28,11 +28,68 @@
  */
 struct PlayerImpulse
 {
-    int id = 0;
-    impulsetype_t type = IT_NUMERIC;
-    bool isTriggerable = false;  ///< Accepts triggered states in addition to active ones.
+    int id;
+    impulsetype_t type;
     de::String name;
     de::String bindContextName;
+
+    short booleanCounts[DDMAXPLAYERS];
+
+#ifdef __CLIENT__
+    /**
+     * Double-"clicks" actually mean double activations that occur within the double-click
+     * threshold. This is to allow double-clicks also from the numeric impulses.
+     */
+    struct DoubleClick
+    {
+        enum State
+        {
+            None,
+            Positive,
+            Negative
+        };
+
+        bool triggered = false;           //< True if double-click has been detected.
+        uint previousClickTime = 0;       //< Previous time an activation occurred.
+        State lastState = None;           //< State at the previous time the check was made.
+        State previousClickState = None;  /** Previous click state. When duplicated, triggers
+                                              the double click. */
+    } doubleClicks[DDMAXPLAYERS];
+#endif
+
+    PlayerImpulse(int id, impulsetype_t type, de::String const &name, de::String bindContextName)
+        : id             (id)
+        , type           (type)
+        , name           (name)
+        , bindContextName(bindContextName)
+    {
+        de::zap(booleanCounts);
+    }
+
+    /**
+     * Returns @c true if the impulse is triggerable.
+     */
+    inline bool isTriggerable() const {
+        return (type == IT_NUMERIC_TRIGGERED || type == IT_BOOLEAN);
+    }
+
+#ifdef __CLIENT__
+    /**
+     * Updates the double-click state of an impulse and marks it as double-clicked
+     * when the double-click condition is met.
+     *
+     * @param playerNum  Player/console number.
+     * @param pos        State of the impulse.
+     */
+    void maintainDoubleClicks(int playerNum, float pos);
+
+    int takeDoubleClick(int playerNum);
+
+    /**
+     * Register the console commands and variables of this module.
+     */
+    static void consoleRegister();
+#endif
 };
 
 void P_ImpulseShutdown();