void Fill() {
            real x = GetRectMinX(GetWorldBounds()), y = GetRectMaxY(GetWorldBounds())
            int i = 0,j = 0
            while (y > GetRectMinY(GetWorldBounds()) ) {
                x = GetRectMinX(GetWorldBounds())
                i = 0
                TriggerSleepAction(0.01)
                while ( x < GetRectMaxX(GetWorldBounds()) ) {
                    if GetTerrainType( x+32. , y+32. ) == RoadId {
                        if  j <= 64 {
                            this.y1[j].x[i] = 0
                            msg("("+I2S(j) + " , " + I2S(i) + ") 0" )
                        } else { this.y2[j].x[i] = 0}
                    }
                    else {
                        if  j >= 64 {
                            this.y1[j-64].x[i] = -2
                            msg("("+I2S(j) + " , " + I2S(i) + ") 0" )
                        } else { this.y2[j-64].x[i] = -2}
                    }
                    x += 128
                    i++
                }
                y -= 128
                j++
            }
            msg("end")
        }