`#name Show Map Squareness`; `#description Shows how square a map is. Computes the percentage of orthogonal lines, based on their length.`; let totalLength = 0; let orthogonalLength = 0; Map.getLinedefs().forEach(ld => { totalLength += ld.length; if(ld.angle % 90 == 0) orthogonalLength += ld.length; }); orthogonalPercentage = (orthogonalLength / totalLength * 100).toFixed(2); showMessage('The map is ' + orthogonalPercentage + '% square.');