main.spx

var (
	Chess         Chess
	Button4       Button4
	CurrentChess  CurrentChess
	Calf1         Calf1
	gameState     List
	ret           int
	col           int
	score         int
	currentCol    int
	currentPlayer int
	currentRow    int
	row           int
)

const (
	_Black         = 1
	_White         = 2
	_BlackAndWhite = _Black + _White
)

func calcHitPosition(x float64, y float64) {
	col = iround((x + 159) / 17.7)
	row = iround((y - 159) / -17.7)
	if row < 0 || col < 0 || row > 18 || col > 18 {
		ret = 0
	} else {
		ret = row*19 + col + 1
	}
}

func initGameState() {
	gameState.delete All
	for i := 0; i < 361; i++ {
		gameState.append 0
	}
}

func calcScore(dx int, dy int) {
	row = currentRow + dy
	col = currentCol + dx
	for row > 0 && col > 0 && row < 18 && col < 18 && currentPlayer == gameState.at(row*19+col).int {
		score++
		row += dy
		col += dx
	}
}

func checkHasWon() {
	checkHasWonByRow 1, 1
	checkHasWonByRow 1, 0
	checkHasWonByRow 0, 1
	checkHasWonByRow 1, -1
}

func checkHasWonByRow(dx int, dy int) {
	score = 1
	calcScore dx, dy
	calcScore -dx, -dy
	if score > 4 {
		broadcast "game over", true
	}
}

onStart => {
	initGameState
	score = 0
	currentPlayer = _Black
}

onClick => {
	calcHitPosition mouseX, mouseY
	if ret > 0 && gameState.at(ret-1).int == 0 {
		currentCol = col
		currentRow = row
		broadcast "try put chess"
	}
}

onMsg "confirm to put chess", => {
	if score < 5 {
		gameState.set currentRow*19+currentCol, currentPlayer
		checkHasWon
		Chess.clone
		broadcast "put chess done", true
	}
}