108 lines
2.6 KiB
JavaScript
108 lines
2.6 KiB
JavaScript
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let inputData = ``;
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let m = [];
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let guard, UP, DOWN, LEFT, RIGHT;
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let obstacles = new Set();
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let visitedPos = new Set();
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let cellSize = 800 / 130;
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function setup() {
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createCanvas(800, 800);
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frameRate(120);
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// Parse input data
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m = inputData.split('\n').map(line => line.trim());
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// Define directions
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UP = { x: 0, y: -1 };
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DOWN = { x: 0, y: 1 };
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LEFT = { x: -1, y: 0 };
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RIGHT = { x: 1, y: 0 };
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// Initialize guard and obstacles
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for (let y = 0; y < m.length; y++) {
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for (let x = 0; x < m[y].length; x++) {
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let cell = m[y][x];
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if (["^", "v", "<", ">"].includes(cell)) {
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guard = {
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pos: { x, y },
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direction:
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cell === "^" ? UP :
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cell === "v" ? DOWN :
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cell === "<" ? LEFT :
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RIGHT
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};
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}
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if (cell === "#") {
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obstacles.add(`${x},${y}`);
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}
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}
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}
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}
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function draw() {
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background(220);
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moveGuard();
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drawGrid();
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}
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function moveGuard() {
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if (!visitedPos.has(`${guard.pos.x},${guard.pos.y}`)) {
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visitedPos.add(`${guard.pos.x},${guard.pos.y}`);
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}
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let nextPos = {
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x: guard.pos.x + guard.direction.x,
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y: guard.pos.y + guard.direction.y
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};
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if (isObstacle(nextPos)) {
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// Change direction if obstacle encountered
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if (guard.direction === UP) guard.direction = RIGHT;
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else if (guard.direction === RIGHT) guard.direction = DOWN;
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else if (guard.direction === DOWN) guard.direction = LEFT;
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else if (guard.direction === LEFT) guard.direction = UP;
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} else {
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// Move guard
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guard.pos = nextPos;
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}
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}
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function isObstacle(pos) {
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return obstacles.has(`${pos.x},${pos.y}`) ||
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pos.x < 0 || pos.x >= m[0].length ||
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pos.y < 0 || pos.y >= m.length;
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}
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function drawGrid() {
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// Draw visited positions
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fill(255, 255, 0, 100); // Transparent yellow
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visitedPos.forEach(pos => {
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let [x, y] = pos.split(',').map(Number);
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rect(x * cellSize, y * cellSize, cellSize, cellSize);
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});
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// Draw obstacles
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fill(255, 0, 0, 100); // Transparent red
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obstacles.forEach(pos => {
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let [x, y] = pos.split(',').map(Number);
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rect(x * cellSize, y * cellSize, cellSize, cellSize);
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});
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// Draw guard
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fill(0, 0, 255); // Blue
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rect(guard.pos.x * cellSize, guard.pos.y * cellSize, cellSize, cellSize);
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// Draw guard direction
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fill(0);
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textAlign(CENTER, CENTER);
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text(
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guard.direction === UP ? "^" :
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guard.direction === DOWN ? "v" :
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guard.direction === LEFT ? "<" : ">",
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guard.pos.x * cellSize + cellSize/2,
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guard.pos.y * cellSize + cellSize/2
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);
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}
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