Phaser bpt.Prefab breadthfirst/depthfirst children searching (work in progress)

bpt_prefab_extras.ts

// Author Brad P. Taylor ([email protected]) license MIT
///<reference path="../../../../bower_components/phaser-official/build/phaser.d.ts"/>
///<reference path="../../DefinitelyTyped/lodash/lodash.d.ts"/>
///<reference path="./prefab.ts"/>
///<reference path="./basic.ts"/>

// this really should just be a collection of utils

module bpt.prefab {

    export function applyMixins_(derivedCtor:any, baseCtors:any[]):any {
        baseCtors.forEach(baseCtor => {
            Object.getOwnPropertyNames(baseCtor.prototype).forEach(name => {
                derivedCtor.prototype[name] = baseCtor.prototype[name];
            })
        });
        return derivedCtor;
    }

    export class PrefabAuditData {

        sources:any[] = [];
        addToSourceChain( source:any ) {
            this.sources.push( source );
        }

    }

    export function prefabAuditTrail( target:any, source:any ) {

        target.audit = target.audit || new PrefabAuditData();
        target.audit.addToSourceChain( source );

    }

    export function createPrefab( prefab, ...args:any[]  ) {

        return Factory.create_( prefab, args );

    }

    export function createPrefab_( prefab, params:any[] ) {

        return Factory.create_( prefab, params );

    }

    // return false to break loop
    export interface IVisitFunction<T,O>{ (a:T,o:O): any; }

    export function eachDepthFirst( parent:any, func:IVisitFunction<any,any>, result:any = {}, thisArg? ) {

        var r:any = func.call( thisArg||parent, parent, result );
        if ( (undefined !== r) && !r ) return r;

        if ( ('undefined' !== typeof parent.children) && (0 != parent.children.length) ) {

            for ( var i = 0, l = parent.children.length; i < l; ++i ) {

                r = eachDepthFirst( parent.children[i], func, result, thisArg );
                if ( (undefined !== r) && !r ) return r;

            }

        }

    }

    export function eachBreadthFirst( parent:any, func:IVisitFunction<any,any>, result:any = {}, thisArg?, clearCookies = true, cookie = "$c$o$o$k$i$e$" ) {

        var queue:any[] = [ parent ];
        var cookied:any[] = [];
        var top:number = 0;

        parent[cookie] = cookied.length;
        clearCookies ? cookied.push( parent ) : ++cookied.length;
        var r:any = func.call(thisArg||parent, parent, result);
        if ( (undefined !== r) && !r ) return r;

        while ( top < queue.length ) {

            var current = queue[top++];

            if ( ('undefined' !== typeof current.children) && (0 != current.children.length) ) {

                for ( var i = 0, l = current.children.length; i < l; ++i ) {

                    var child:any = current.children[i];

                    if ( undefined === child[cookie] ) {

                        child[cookie] = cookied.length;
                        clearCookies ? cookied.push( child ) : ++cookied.length;
                        r = func.call(thisArg||child, child, result);
                        if ( (undefined !== r) && !r ) return r;

                        if ( ('undefined' !== typeof child.children) && (0 != child.children.length) ) {

                            queue.push( child );

                        }

                    }

                }

            }

        }

        if ( clearCookies ) for ( i = 0, l = cookied.length; i < l; ++i ) {
            delete cookied[i][cookie];
        }
    }

    export function testDepths( parent ) {

        //eachBreadthFirst( parent, function(i){ console.log( i.name, i ); }, {}, this, false );
        eachBreadthFirst( parent, ()=>{}, {}, this, false );

        var visit = 0;

        eachDepthFirst( parent, (item) => {

            console.log( visit++, item["$c$o$o$k$i$e$"], item );
            delete item["$c$o$o$k$i$e$"];

        } );

    }

    export function traceDecendents( parent:any, thisArg? ) {

        eachDepthFirst( parent, console.log.bind(console), {}, thisArg );

    }

    export function getDecendents( parent:any, decendents:any[] = [], thisArg? ) {

        eachDepthFirst( parent, (item:any, result:any[]) => { decendents.push( item ); }, decendents , thisArg );

        return decendents;
    }

    export function findDecendantsOfType( parent:any, T:any, depthFirst = false ):any[] {

        var fn:any = depthFirst ? eachDepthFirst : eachBreadthFirst;

        var found:any[] = [];

        fn( parent, (child) => {

            if ( child instanceof T.prototype.constructor ) {

                // console.log( child, T );

                found.push( child );

            }

        });

        return found;
    }

    // TODO - this probably should take a predicate function instead of a regex/field

    export function findMatchingDecendantsOfType( parent:any, re:RegExp, field:string, T:any, depthFirst = false ):any[] {

        var candidates:any[] = findDecendantsOfType( parent, T, depthFirst );

        if ( undefined === candidates || 0 == candidates.length ) return;

        var found:any[] = [];

        for ( var i in candidates ) {

            if ( re.test( candidates[i][field].toString() ) ) {

                found.push( candidates[i] );

            }

        }

        return found;
    }

    export function addOverlayAsChild( target, key, xCoeff, yCoeff ) {

        var overlay = target.game.add.image( 0, 0, key );
        overlay.anchor.setTo( 0.5, 0.5 );
        var ow = overlay.width, oh = overlay.height;
        overlay.x = (ow*0.5)+(target.width-ow)*xCoeff - target.width*target.anchor.x;
        overlay.y = (oh*0.5)+(target.height-oh)*yCoeff - target.height*target.anchor.y;
        overlay.alpha = 0.25;
        target.addChild( overlay );

    }

}