//=============================================================================
// BossBar.js
//=============================================================================
//v2.0
/*:
 * @plugindesc Makes boss hp bar appear in battle if you have note tag on the boss.
 * @author Jeremy Cannady
 *
 * @param Boss Border X
 * @desc Select x position adjust.Positive to go right, negative to go left.
 * @default 50
 *
 * @param Boss Border Y
 * @desc Select the y position adjust. Poistive to go down, negative to go up.
 * @default 350
 *
 * @param Boss Bar X
 * @desc Select x position adjust.Positive to go right, negative to go left.
 * @default 202
 *
 * @param Boss Bar Y
 * @desc Select the y position adjust. Poistive to go down, negative to go up.
 * @default 400
 *
 * @param Turn Opacity
 * @desc Opacity of the bars when you are attacking, etc. 255 is visible 0 is invisible.
 * @default 255
 *
 * @param Input Opacity
 * @desc Opacity of the bars when you are selcting actions to do. 255 is visible 0 is invisible.
 * @default 100
 *
 * @param Scale
 * @desc Scales both of the images. 1.2 is 20% increase. 0.8 is 80% of original. 1 is no scale.
 * @default 1
 *
 * @help
 * Put <Boss:1> in the enemy note tag to activate. No Spaces.
 *This will get the image BossBar1.png and BossFill1.png from the img/pictures
 *and display this during battle.Please note if you scale the image you need to adjust the x and y values.
 *
*/

(function(){
//=============================================================================
// Create variables.
//=============================================================================
    var parameters = PluginManager.parameters('BossBar');
    var bossbx = Number(parameters['Boss Border X'] || 50);
    var bossby = Number(parameters['Boss Border Y'] || 350);
    var bossbgx = Number(parameters['Boss Bar X'] || 202);
    var bossbgy = Number(parameters['Boss Bar Y'] || 400);
    var inputOpacity = Number(parameters['Input Opacity'] || 255);
    var turnOpacity = Number(parameters['Turn Opacity'] || 255);
    var scale = Number(parameters['Scale'] || 1);
    Game_Troop.prototype.currentBossID = 0;
    Game_Troop.prototype.currentBossTroopID = 0;
    Game_Troop.prototype.currentBossMetaID = 0;
    Game_Troop.prototype.haveBoss = false;
//=============================================================================
// Create sprite layer to display boss gauge.
//=============================================================================
    var alias_BossGauge_createLowerLayer = Spriteset_Battle.prototype.createLowerLayer
    Spriteset_Battle.prototype.createLowerLayer = function() {
        alias_BossGauge_createLowerLayer.call(this);
        var haveBoss = 0;
        for(var i = 0; i < $gameTroop._enemies.length; i++){
            if ($dataEnemies[$gameTroop._enemies[i]._enemyId].meta.Boss){
                $gameTroop.currentBossTroopID = i;
                $gameTroop.currentBossID = $gameTroop._enemies[i]._enemyId;
                $gameTroop.currentBossMetaID = $dataEnemies[$gameTroop.currentBossID].meta.Boss;
                $gameTroop.haveBoss = true;
                haveBoss += 1;
            };
            if(haveBoss === 0){
                $gameTroop.haveBoss = false;
            }
        };
        if($gameTroop.haveBoss){
            this.createBossGauge();
        };
    }
//=============================================================================
// Create update function to update the gauge.
//=============================================================================
    var alias_SSB_update = Spriteset_Battle.prototype.update
    Spriteset_Battle.prototype.update = function() {
        alias_SSB_update.call(this);
        if($gameTroop.haveBoss){
            this.updateBossGauge();
        };
    }
//=============================================================================
// Create the bitmaps and add them.
//=============================================================================
    Spriteset_Battle.prototype.createBossGauge = function() {
        this.bitmap1 = new Sprite(ImageManager.loadPicture("BossBar"+$dataEnemies[$gameTroop.currentBossID].meta.Boss));
        this.bitmap2 = new Sprite(ImageManager.loadPicture("BossBarFill"+$dataEnemies[$gameTroop.currentBossID].meta.Boss));
        this.bitmap1.x = bossbx;
        this.bitmap1.scale.x = scale;
        this.bitmap1.y = bossby;
        this.bitmap1.scale.y = scale;
        this.bitmap2.x = bossbgx;
        this.bitmap2.scale.x = scale;
        this.bitmap2.y = bossbgy
        this.bitmap2.scale.y = scale;
        this.addChild(this.bitmap1);
        this.addChild(this.bitmap2);
    };
//=============================================================================
// Update the gauge based on boss HP.
//=============================================================================
    Spriteset_Battle.prototype.updateBossGauge = function() {
        if(BattleManager._phase == 'input'){
            this.bitmap1.opacity = inputOpacity;
            this.bitmap2.opacity = inputOpacity;
        }else{
            this.bitmap1.opacity = turnOpacity;
            this.bitmap2.opacity = turnOpacity;
        };

        var rate = $gameTroop._enemies[$gameTroop.currentBossTroopID]._hp/$dataEnemies[$gameTroop.currentBossID].params[0];
        if(rate > 1){rate = 1};

        this.bitmap2.setFrame(0, 0, this.bitmap2.bitmap.width * rate, this.bitmap2.height);
        if ($gameTroop._enemies[$gameTroop.currentBossTroopID]._hp == 0 ){
            this.bitmap1.opacity = 0;
            this.bitmap2.opacity = 0;
        };
    };
})();