gistfile1.php

function createHouses() {
    $tries = 0;
    $max_tries = 3;
    $timeout = 500;
    $time_start = microtime(true);
    $start = 
    $use = 'timeout';
    while($house_count > 0) {
        if ($use == 'timeout') {
            if (microtime(true) - $time_start > $timeout) {
                break;
            }
        } else {
            if ($tries == $max_tries) {
                break;
            }
        }
        for ($i=0; $i < $n; $i++) { 
            for ($j=0; $j < $n; $j++) {
                if ($house_count == 0) {
                    break;
                }
                if ($this->grid[$i][$j] == Types::$TYPE_GRASS) 
                {

                    // Higher chance near intersections?
                    if ($this->hasNearbyRoad($i,$j) && ($allow_nearby_house || !$this->hasNearbyHouse($i,$j))) {
                        // var isWall = Math.floor(Math.random()*(/wallFrequency));
                        $chance = (rand(0,1000) / 1000) <= $house_pct;
                        
                        if ($chance) {
                            $this->grid[$i][$j] = Types::$TYPE_HOUSE;
                            $this->houses[] = array('x' => $i, 'y' => $j);
                            $house_count--;
                        }
                    }
                }
            }
        }
        $tries++;
    }
}