ChallenChess/chessLevelGenerator.html at master · ebuc99/ChallenChess · GitHub

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<html>
<head>
<title>CHESS - Level Generator</title>

<style>
tr td
{
    background-color: #fff;
}

tr:nth-child(even) td:nth-child(odd),
tr:nth-child(odd) td:nth-child(even)
{
    background-color: #ccc;
}
</style>

<script>

const KING = 0;
const QUEEN = 1;
const KNIGHT = 2;
const BISHOP = 3;
const ROOK = 4;
const PAWN = 5;

king_w = {name:"king", color:"w", move:[[-1,-1],[-1,0],[-1,1],[0,-1],[0,1],[1,-1],[1,0],[1,1]]};
king_b = {name:"king", color:"b", move:[[-1,-1],[-1,0],[-1,1],[0,-1],[0,1],[1,-1],[1,0],[1,1]]};

queen_w = {name:"queen", color:"w", move:[["x",0],[0,"y"],["x","y"]]};
queen_b = {name:"queen", color:"b", move:[["x",0],[0,"y"],["x","y"]]};

knight_w = {name:"knight", color:"w", move:[[1,2],[2,1],[2,-1],[1,-2],[-1,-2],[-2,-1],[-2,1],[-1,2]]};
knight_b = {name:"knight", color:"b", move:[[1,2],[2,1],[2,-1],[1,-2],[-1,-2],[-2,-1],[-2,1],[-1,2]]};

bishop_w = {name:"bishop", color:"w", move:[["x","y"]]};
bishop_b = {name:"bishop", color:"b", move:[["x","y"]]};

rook_w = {name:"rook", color:"w", move:[["x",0],[0,"y"]]};
rook_b = {name:"rook", color:"b", move:[["x",0],[0,"y"]]};

pawn_w = {name:"pawn", color:"w", move:[[-1,-1],[1,-1]]};
pawn_b = {name:"pawn", color:"b", move:[[-1,1],[1,1]]};

figures_w = [king_w, queen_w, knight_w, bishop_w, rook_w, pawn_w];
figures_b = [king_b, queen_b, knight_b, bishop_b, rook_b, pawn_b];

function showMap(map, sx, sy, ex, ey) {

	var old = document.getElementById("map");
	if (old != null) {
		old.parentNode.removeChild(old);
	}

	var table = document.createElement("table");
	table.setAttribute("id", "map");

	for (var y = 0;y < map.length; y++) {
		var row = document.createElement("tr");
		for (var x=0;x<map[y].length;x++) {
			var cell = document.createElement("td");
			var cellImage = document.createElement("img");
			if (map[y][x] != "empty") {
				cellImage.setAttribute("src", map[y][x].name + "_" + map[y][x].color + ".png")
				cellImage.setAttribute("alt", map[y][x].name + "_" + map[y][x].color)
			}
			cellImage.setAttribute("width", "100px");
			cellImage.setAttribute("height", "100px");
			if (x == sx && y == sy) {
				cellImage.setAttribute("style", "background-color:green;")
			} else if (x == ex && y == ey) {
				cellImage.setAttribute("style", "background-color:red;")
			}
			cell.appendChild(cellImage);
			row.appendChild(cell);
		}
		table.appendChild(row);
	}
	table.setAttribute("border", "2");
	document.getElementsByTagName("body")[0].appendChild(table);

}

function getPossibleMoves(map, x, y, dx, dy) {
	var result = [];
	var mx = x + dx;
	var my = y + dy;
	while (mx >= 0 && mx < map[0].length && my >= 0 && my < map.length && map[my][mx] == "empty") {
		result.push([mx, my]);
		mx = mx + dx;
		my = my + dy;
	}
	return result;
}

function createLevel() {

	// get size from input
	var size = document.getElementById("size").value;

	// init map
	var map = Array(size);
	for (var i=0;i<size;i++) {
		map[i] = new Array(size);
	}

	// init fields
	for (var y=0;y<map.length;y++) {
		for (var x=0;x<map.length;x++) {
			map[y][x] = "empty";
		}
	}

	// set random start
	var sx = Math.floor(Math.random() * size);
	var sy = Math.floor(Math.random() * size);
	var x = sx;
	var y = sy;
	var c = "white";

	console.log("Start: " + x + "/" + y);

	// build path
	var steps = 0;
	while (steps < 10) {

		// get random figure
		var fig = "";
		if (c == "white") {
			fig = figures_w[Math.floor(Math.random() * figures_w.length)];
		} else {
			fig = figures_b[Math.floor(Math.random() * figures_b.length)];
		}

		// get list of possible movements
		var possibleMoves = [];
		for (var mi=0;mi<fig.move.length;mi++) {
			var move = fig.move[mi];
			if (move[0] == "x" && move[1] == "y") {
				possibleMoves.concat(getPossibleMoves(map, x, y, 1, 1));
				possibleMoves.concat(getPossibleMoves(map, x, y, -1, -1));
				possibleMoves.concat(getPossibleMoves(map, x, y, 1, -1));
				possibleMoves.concat(getPossibleMoves(map, x, y, -1, 1));

			} else if (move[0] == "x" && move[1] == 0) {
				possibleMoves.concat(getPossibleMoves(map, x, y, 1, 0));
				possibleMoves.concat(getPossibleMoves(map, x, y, -1, 0));

			} else if (move[0] == 0 && move[1] == "y") {
				possibleMoves.concat(getPossibleMoves(map, x, y, 0, 1));
				possibleMoves.concat(getPossibleMoves(map, x, y, 0, -1));

			} else {
				var tx = x + move[0];
				var ty = y + move[1];
				if (tx >= 0 && tx < map[0].length && ty >= 0 && ty < map.length && map[ty][tx] == "empty") {
					possibleMoves.push([tx, ty]);
				}
			}
		}

		// if possible moves is not empty, set new position
		if (possibleMoves.length > 0) {
			var move = possibleMoves[Math.floor(Math.random() * possibleMoves.length)];
			map[y][x] = fig;
			x = move[0];
			y = move[1];
			if (c == "white") {
				c = "black";
			} else {
				c = "white";
			}
			steps++;
		}
	}

	// show final level
	showMap(map, sx, sy, x, y);
}
</script>
</head>
<body>

<input id="size" type="text" />
<button type="button" onclick="createLevel()">Generate</button>

</body>
</html>