phaser4-rex-plugins/templates/bejeweled2/board/methods/PreTest.js

Plugins of phaser4

/*
1. Test if there has any matched line after chess swapping
*/

import RefreshSymbolCache from '../match/RefreshSymbolCache.js';
import AnyMatch from '../match/AnyMatch.js';

var PreTest = function () {
    var match = this.match;
    var directions = this.board.grid.halfDirections;
    var tileB;
    RefreshSymbolCache.call(this); // only refresh symbol cache once

    for (var tileY = 0, rowCnt = this.board.height; tileY < rowCnt; tileY++) {
        for (var tileX = 0, colCnt = this.board.width; tileX < colCnt; tileX++) {
            if (!this.isAtActivateArea(tileX, tileY)) {
                continue;
            }

            tileA.x = tileX;
            tileA.y = tileY;

            for (var dir = 0, dirCnt = directions.length; dir < dirCnt; dir++) {
                tileB = this.board.getNeighborTileXY(tileA, dir);

                // In prepare rows
                if (!this.isAtActivateArea(tileB.x, tileB.y)) {
                    continue;
                }

                // Swap symbol
                SwapSymbols(match, tileA, tileB);
                // Any match?
                this.preTestResult = AnyMatch.call(this, 3);
                // Swap symbol back
                SwapSymbols(match, tileA, tileB);

                if (this.preTestResult) {
                    return true;
                }
            }
        }
    }
    return false;
}

var SwapSymbols = function (match, tileA, tileB) {
    var symbolA = match.getSymbol(tileA.x, tileA.y);
    var symbolB = match.getSymbol(tileB.x, tileB.y);
    match.setSymbol(tileA.x, tileA.y, symbolB);
    match.setSymbol(tileB.x, tileB.y, symbolA);
};

var tileA = {
    x: 0,
    y: 0
};

export default PreTest;