func nextStep(withMCPoints points: [[MCPoint]], andNeighbourhood neighbourhood: Neighbourhood) -> [[MCPoint]] {
        let size = (height: points.count, width: points[0].count)
        var points = MCPoint.clearChosen(forMCPoints: points)
        while MCPoint.chechForNotDrawnElements(forPoints: points) {
            var x = Int(arc4random_uniform(UInt32(size.height)))
            var y = Int(arc4random_uniform(UInt32(size.width)))
            while points[x][y].chosen || points[x][y].selected {
                x = Int(arc4random_uniform(UInt32(size.height)))
                y = Int(arc4random_uniform(UInt32(size.width)))
            }
            let chosenID = points[x][y].id
            let neighbours = neighbourhood.generateNeighbourhood(forMCPoints: points, i: x, j: y)
            let newID = self.drawNewID(forNeighbours: neighbours)
            if self.calculateEnergy(forChosenID: newID, neighbourhood: neighbours) <= self.calculateEnergy(forChosenID: chosenID, neighbourhood: neighbours) {
                points[x][y].id = newID
            }else {
                if arc4random_uniform(100) < 5 {
                    points[x][y].id = newID
                }
            }
            points[x][y].chosen = true
        }
        return points
    }