DoubleX RMMV Popularized ATB Countdown

Lets users set some states updating turns per specified seconds

Notetags

*    # State Notetags:                                                       
 *      1. <patb countdown: sec>                                              
 *         - Sets the state to have its turn updated every sec seconds        
 *         - Every second in sec only consists of frames with atb updates

Plugin Calls

*    # Data State manipulations                                              
 *      1. meta.patb_countdown                                                
 *         - Returns the number of seconds per state turn update              
 *         - Those seconds only consist of frames with atb updates            
 *      2. meta.patb_countdown = sec                                          
 *         - Sets the number of seconds per state turn update as sec          
 *         - Every second in sec only consists of frames with atb updates     
 *         - All meta.patb_countdown changes can be saved if                  
 *           DoubleX RMMV Dynamic Data is used                                
 *    # Battler manipulations                                                 
 *      1. patb_countdown_clock[stateId]                                      
 *         - Returns the countdown clock, measured in frames, of state with id
 *           stateId                                                          
 *         - The number of frames per second is hardcoded as 60 by default    
 *      2. patb_countdown_clock[stateId] = frames                             
 *         - Sets the countdown clock, measured in frames, of state with id   
 *           stateId, as frames frame                                         
 *         - The number of frames per second is hardcoded as 60 by default    
 *      3. patb_countdown_freeze[stateId]                                     
 *         - Returns whether the countdown of a state with id stateId's frozen
 *      4. patb_countdown_freeze[stateId] = boolean                           
 *         - Sets the countdown of state with id stateId to be frozen if      
 *           boolean is true

Configuration

/* Sets something to happen when the turn of the countdown state state
     * owned by the battler calling on_countdown_update decreases
     * on_countdown_update will be bound to the battler upon use
     */
    on_countdown_update: function(state) {
        // Uses DoubleX RMMV State Triggers to trigger countdown update effects
        //var GBB = DoubleX_RMMV.State_Triggers.Game_BattlerBase;
        //GBB.execStateTriggers.call(this, state.id, "turn");
        //
        
        // Applies 10 hp damage to the state owner per countdown update
        this._result.clear();
        this._result.success = true;
        this.gainHp(-10);
        this.onDamage(10);
        this.startDamagePopup();
        if (this._hp <= 0) { this.performCollapse(); }
    } // on_countdown_update

*      v1.00c(GMT 0700 20-8-2016):                                           
 *      1. In sync with the latest DoubleX RMMV Popularized ATB Core version  
 *      v1.00b(GMT 0400 16-7-2016):                                           
 *      1. Changed auto removing timing of countdown state to "patb_countdown"
 *      2. Increased this plugin's compatibility and robustness               
 *      v1.00a(GMT 0600 6-2-2016):                                            
 *      1. 1st testing version of this plugin finished

DoubleX(Optional)

*      You shall keep this plugin's Plugin Info part's contents intact       
 *      You shalln't claim that this plugin's written by anyone other than    
 *      DoubleX or his aliases                                                
 *      None of the above applies to DoubleX or his aliases