Genome2D > GMovieClipExtended

/**
 *
 * GMovieClipExtended
 *
 * Extends GMovieClip to add reverse playing and repeat counter.
 * Considerations:
 * - reverseAndPlay takes priority over repeatable.
 * - repeatCount represents 1 entire timeline, so use n*2 in reverseAndPlay.
 *
 * Example:
 *
 * var mc: GMovieClipExtended = GNodeFactory.createNodeWithComponent(GMovieClipExtended) as GMovieClipExtended ;
 * mc.setTextureAtlas(someAtlas);
 * Genome2D.getInstance().root.addChild(explosion_mc.node);
 * mc.frames = ['frame1', 'frame2', 'frame3'] ;
 * mc.reverseAndPlay = true ;
 * mc.repeatCount = 2 ; // 1 in-out animation
 *
 */
package {
    import com.genome2d.components.renderables.GMovieClip;
    import com.genome2d.core.GNode;
    import com.genome2d.g2d;

    use namespace g2d ;

    public class GMovieClipExtended extends GMovieClip{

        public var reverseAndPlay:Boolean = false ;
        public var repeatCount:int = 1 ;
        private var _playDirection: int = 1 ;
        private var _repeatCounter:int = 0 ;

        public function GMovieClipExtended(pNode:GNode) {
            super(pNode);
        }

        override public function update(p_deltaTime:Number, p_parentTransformUpdate:Boolean, p_parentColorUpdate:Boolean):void {
            if(!cTexture) return ;
            if(_bPlaying){
                _nAccumulatedTime += p_deltaTime ;
                if( _nAccumulatedTime >= _nSpeed ){
                    // new frame.
                    _iCurrentFrame += _nAccumulatedTime/_nSpeed * _playDirection ;
                    var lastFrame: Boolean = false ;
                    if( reverseAndPlay ){
                        if( _iCurrentFrame < _iFrameIdsLength-1 && _iCurrentFrame > 0 ){
                            _iCurrentFrame %= _iFrameIdsLength ;
                        } else {
                            lastFrame = true ;
                        }
                    } else {
                        if( _iCurrentFrame < _iFrameIdsLength ){
                            _iCurrentFrame %= _iFrameIdsLength ;
                        } else {
                            lastFrame = true ;
                        }
                    }
                    if( lastFrame ){
                        if ( repeatCount > 0 && ++_repeatCounter >= repeatCount ) {
                            _repeatCounter = 0 ;
                            _iCurrentFrame = _playDirection > 0 ? _iFrameIdsLength-1 : 0 ;
                            _playDirection = 1 ;
                            _bPlaying = false ;
                        } else {
                            if( reverseAndPlay ) {
                                _playDirection *= -1;
                            } else if( repeatable ){
                                _iCurrentFrame = 0 ;
                            }
                        }
                    }
                    cTexture = _cTextureAtlas.getTexture(_aFrameIds[_iCurrentFrame]);
                }
                _nAccumulatedTime %= _nSpeed ;
            }
        }
    }
}