以编程方式绘制游戏板

Question

尝试在iPad上绘制一个简单的15x15游戏板。

目前，我的代码只打印左上角的一个图像，这似乎是添加到imgViewArray的最终图像，但不是100%确定。

func createImgBoard() {
    let cellWidth = 57
    let cellHeight = 57
    let squares = 225
    var k = 0
    var row = 0; var col = 0
    let topY = 500-4*cellHeight
    let leftX = 384-4*cellWidth
    var image: UIImage
    for i in 0...14 {
        for j in 0...14 {
            if board[i][j].symbol == "*" {
                image = UIImage(named: "grass57x57px")!
                imgViewArray[k].image = image
            }
            else {
                image = UIImage(named: "notgrass57x57px")!
                imgViewArray[k].image = image
            }
            k+=1
            print("Added img to imgViewArray " + String(k) + " as " + String(describing: image))
        }
    }
    for i in 0...squares-1 {
        imgViewArray[i].frame = CGRect.init(x: leftX+cellWidth*col, y: topY+cellHeight*row, width: cellWidth, height: cellHeight)
        self.view.addSubview(imgViewArray[i])
        col+=1
        if col > 14 {
            row+=1
            col=0
        }
    } 
}

编辑：由于某种原因，现在它甚至没有显示单个图像，即使代码根本没有改变......

Answer 1

为什么还要使用两个单独的循环？您可以在第一个(嵌套(循环中执行所需的所有操作。

class MyViewController: UIViewController {
    let board: [[String]] = []
    let cellImageView: [[UIImageView]] = []
    func createBoardImageViews() {
        let cellWidth = 57
        let cellHeight = 57
        let boardWidth = 15
        let boardHeight = 15
        let x0 = 384 - 4 * cellWidth
        let y0 = 500 - 4 * cellHeight
        let imageForCellMarker: [String: UIImage] = [
            "*": UIImage(named: "grass")!,
            // etc., assuming you have other cell marker types
        ]
        let defaultCellImage = UIImage(named: "notgrass")!
        for y in 0 ..< boardHeight {
            cellImageView.append([])
            for x in 0 ..< boardWidth {
                let image = imageForCellMarker[board[y][x]] ?? defaultCellImage
                let frame = CGRect(x: x0 + x * cellWidth, y: y0 + y * cellHeight, width: cellWidth, height: cellHeight)
                let imageView = UIImageView(frame: frame)
                imageView.image = image
                cellImageView[y].append(imageView)
                view.addSubview(imageView)
            }
        }
    }
}