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game.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Wumpus World</title>
<style>
#game-board {
display: grid;
grid-template-columns: repeat(4, 50px);
grid-template-rows: repeat(4, 50px);
gap: 2px;
}
.cell {
width: 50px;
height: 50px;
border: 1px solid black;
display: flex;
flex-flow: column;
align-items: center;
justify-content: center;
font-size: 20px;
height: 100%;
}
.agent {
background-color: lightblue;
height: 100%;
width: 100%;
justify-content: center;
align-items: center;
display: flex;
}
.wumpus {
background-color: red;
height: 100%;
width: 100%;
justify-content: center;
align-items: center;
display: flex;
}
.pit {
background-color: black;
height: 100%;
width: 100%;
justify-content: center;
align-items: center;
display: flex;
}
.gold {
background-color: yellow;
height: 100%;
width: 100%;
justify-content: center;
align-items: center;
display: flex;
}
.breeze::after {
content: "💨";
}
.stench::after {
content: "💀";
}
.glitter::after {
content: "✨";
}
.identifier {
font-size: 10px;
display: flex;
align-items: flex-start;
justify-content: flex-start;
border: 0;
margin: 0;
}
</style>
</head>
<body>
<h1>Wumpus World</h1>
<div id="game-board"></div>
<p id="status"></p>
<p id="score">Score: 0</p>
<script>
const SIZE = 4;
let board = Array(SIZE)
.fill()
.map(() => Array(SIZE).fill(" "));
let agentPosition = { x: 0, y: 3 };
let agentDirection = "right";
let score = 0;
let hasArrow = true;
let goldPosition;
let wumpusPosition;
let isWumpusAlive = true;
let agentKnowledge = [];
let endedGame = false;
let moved = false;
let discoveredWumpus = { found: false, relativePosition: null };
let pitCount = 0;
let maxPitCount = 2; //max pit count
async function run() {
await initializeBoard();
await drawBoard();
await nextMove(agentKnowledge);
}
function initializeBoard() {
// Place gold and Wumpus at random positions
goldPosition = getRandomPosition();
board[goldPosition.y][goldPosition.x] = "G";
wumpusPosition = getRandomPosition();
while (
wumpusPosition.x === goldPosition.x &&
wumpusPosition.y === goldPosition.y
) {
wumpusPosition = getRandomPosition();
}
board[wumpusPosition.y][wumpusPosition.x] = "W";
// Place pits with a probability of 0.2
for (let y = 0; y < SIZE; y++) {
for (let x = 0; x < SIZE; x++) {
if (x === 0 && y === 3) continue;
if (x === 1 && y === 3) continue;
if (x === 0 && y === 2) continue;
if (Math.random() < 0.2 && board[y][x] === " ") {
if (pitCount >= maxPitCount) continue;
board[y][x] = "P";
pitCount++;
}
}
}
// Initialize agent's knowledge
const status = {
visited: false,
safe: false,
breeze: false,
stench: false,
glitter: false,
};
const createMatrix = (x, y) =>
Array.from({ length: x }, () =>
Array.from({ length: y }, () => ({ ...status }))
);
agentKnowledge = createMatrix(4, 4);
agentKnowledge[agentPosition.x][agentPosition.y].safe = true;
agentKnowledge[agentPosition.x][agentPosition.y].visited = true;
agentKnowledge[0][2].safe = true;
agentKnowledge[1][3].safe = true;
console.log(`agent x${agentPosition.x}, y${agentPosition.y}`);
console.log(agentKnowledge);
}
function getRandomPosition() {
const position = {
x: Math.floor(Math.random() * SIZE),
y: Math.floor(Math.random() * SIZE),
};
console.log(position);
if (position.x === 0 && position.y === 3) return getRandomPosition();
if (position.x === 0 && position.y === 2) return getRandomPosition();
if (position.x === 1 && position.y === 3) return getRandomPosition();
return position;
}
function drawBoard() {
const gameBoard = document.getElementById("game-board");
gameBoard.innerHTML = "";
for (let y = 0; y < SIZE; y++) {
for (let x = 0; x < SIZE; x++) {
const cell = document.createElement("div");
cell.classList.add("cell");
const content = document.createElement("div");
const identifier = document.createElement("p");
identifier.classList.add("identifier");
identifier.innerHTML = `${x}, ${y}`;
cell.appendChild(identifier);
cell.appendChild(content);
if (x === agentPosition.x && y === agentPosition.y) {
let arrowDirection;
switch (agentDirection) {
case "up":
arrowDirection = "^";
break;
case "down":
arrowDirection = "v";
break;
case "left":
arrowDirection = "<";
break;
case "right":
arrowDirection = ">";
break;
}
content.classList.add("agent");
content.textContent = arrowDirection;
} else {
switch (board[y][x]) {
case "W":
if (isWumpusAlive) {
content.classList.add("wumpus");
content.textContent = "W";
} else {
}
break;
case "P":
content.classList.add("pit");
content.textContent = "P";
break;
case "G":
content.classList.add("gold");
content.textContent = "G";
break;
}
}
if (isAdjacentTo({ x, y }, wumpusPosition)) {
if (isWumpusAlive) content.classList.add("stench");
}
if (isAdjacentTo({ x, y }, goldPosition)) {
content.classList.add("glitter");
}
if (isAdjacentToPit({ x, y })) {
content.classList.add("breeze");
}
gameBoard.appendChild(cell);
}
}
const scorePoints = document.getElementById("score");
scorePoints.innerText = `Score: ${score}`;
console.log("------------ board updated ------------");
}
function isAdjacentTo(pos1, pos2) {
return Math.abs(pos1.x - pos2.x) + Math.abs(pos1.y - pos2.y) === 1;
}
function isAdjacentToPit(pos) {
for (let y = 0; y < SIZE; y++) {
for (let x = 0; x < SIZE; x++) {
if (board[y][x] === "P" && isAdjacentTo(pos, { x, y })) {
return true;
}
}
}
return false;
}
async function move(direction) {
if (endedGame) return;
await delay(500);
let newX = agentPosition.x;
let newY = agentPosition.y;
switch (agentDirection) {
case "up":
newY--;
break;
case "down":
newY++;
break;
case "left":
newX--;
break;
case "right":
newX++;
break;
}
if (newX >= 0 && newX < SIZE && newY >= 0 && newY < SIZE) {
agentPosition.x = newX;
agentPosition.y = newY;
score -= 1;
await checkStatus();
await drawBoard();
await updateKnowledge();
} else {
document.getElementById("status").textContent = "Impact on wall!";
}
}
async function turn(direction) {
if (endedGame) return;
switch (direction) {
case "left":
agentDirection =
agentDirection === "up"
? "left"
: agentDirection === "left"
? "down"
: agentDirection === "down"
? "right"
: "up";
break;
case "right":
agentDirection =
agentDirection === "up"
? "right"
: agentDirection === "right"
? "down"
: agentDirection === "down"
? "left"
: "up";
break;
}
console.log("agentDirection after turn", agentDirection);
score -= 1;
await delay(500);
await drawBoard();
}
function grab() {
if (endedGame) return;
console.log("trying to grab");
if (
agentPosition.x === goldPosition.x &&
agentPosition.y === goldPosition.y
) {
score += 1000;
console.log("gold found");
document.getElementById("status").textContent =
"You found the gold! You win!";
endedGame = true;
} else {
document.getElementById("status").textContent =
"Nothing to grab here.";
}
drawBoard();
}
async function shoot(direction) {
if (endedGame) return;
if (hasArrow) {
score -= 10;
let hit = false;
let arrowX = agentPosition.x;
let arrowY = agentPosition.y;
while (agentDirection !== direction) {
await turn("right");
}
while (
!hit &&
arrowX >= 0 &&
arrowX < SIZE &&
arrowY >= 0 &&
arrowY < SIZE
) {
switch (agentDirection) {
case "up":
arrowY--;
break;
case "down":
arrowY++;
break;
case "left":
arrowX--;
break;
case "right":
arrowX++;
break;
}
if (arrowX === wumpusPosition.x && arrowY === wumpusPosition.y) {
isWumpusAlive = false;
hit = true;
document.getElementById("status").textContent =
"You killed the Wumpus!";
await cleanWumpusFromKnowledge();
}
}
if (!hit) {
document.getElementById("status").textContent = "Arrow missed.";
}
hasArrow = false;
await drawBoard();
} else {
document.getElementById("status").textContent = "No arrows left.";
}
}
function cleanWumpusFromKnowledge() {
const adjacents = getAdjacentPositions(wumpusPosition);
agentKnowledge[wumpusPosition.x][wumpusPosition.y].safe = true;
adjacents.forEach((pos) => {
console.log("position around wumpus", pos.x, pos.y);
agentKnowledge[pos.x][pos.y].stench = false;
const adjacentsOfAdjacent = getAdjacentPositions(pos);
adjacentsOfAdjacent.forEach((AdjPos) => {
console.log(
"position around wumpus",
pos.x,
pos.y,
"adjacent",
AdjPos.x,
AdjPos.y
);
agentKnowledge[AdjPos.x][AdjPos.y].potentialWumpus = false;
});
});
}
function checkStatus() {
const cell = board[agentPosition.y][agentPosition.x];
if (cell === "W" && isWumpusAlive) {
score -= 1000;
document.getElementById("status").textContent =
"Game Over! You encountered the Wumpus.";
endedGame = true;
} else if (cell === "P") {
score -= 1000;
document.getElementById("status").textContent =
"Game Over! You fell into a pit.";
endedGame = true;
} else {
document.getElementById("status").textContent = "";
}
}
async function delay(ms) {
return new Promise((resolve) => setTimeout(resolve, ms));
}
async function moveTo(target, current) {
if (endedGame) return;
if (current.x === target.x && current.y === target.y) return;
console.log("moving to", target);
let sameColumn = false;
let sameRow = false;
let isAbove = false;
let isBellow = false;
let isLeft = false;
let isRight = false;
if (current.x === target.x) sameColumn = true;
if (current.y === target.y) sameRow = true;
if (sameColumn) {
if (current.y > target.y) isAbove = true;
if (current.y < target.y) isBellow = true;
if (isAbove) {
while (agentDirection !== "up") {
if (agentDirection === "right") await turn("left");
else await turn("right");
}
await move();
} else if (isBellow) {
while (agentDirection !== "down") {
await turn("left");
}
await move();
}
}
if (sameRow) {
if (current.x > target.x) isLeft = true;
if (current.x < target.x) isRight = true;
if (isRight) {
while (agentDirection !== "right") {
if (agentDirection === "up") await turn("right");
else await turn("left");
}
await move();
} else if (isLeft) {
while (agentDirection !== "left") {
await turn("left");
}
await move();
}
}
if (agentKnowledge[agentPosition.x][agentPosition.y].potentialGold)
await grab();
}
async function nextMove(agentKnowledge) {
if (endedGame) return;
console.log("calculating next move");
let optimalMove = null;
let safestMove = null;
if (discoveredWumpus.found)
await shoot(discoveredWumpus.relativePosition);
const adjacents = getAdjacentPositions(agentPosition);
for (const pos of adjacents) {
const { x, y } = pos;
if (agentKnowledge[x][y].safe && !agentKnowledge[x][y].visited) {
console.log(`x${x}, y${y} is safe, moving`);
optimalMove = { x, y };
break;
} else if (
!agentKnowledge[x][y].safe &&
!agentKnowledge[x][y].potentialWumpus &&
!agentKnowledge[x][y].potentialPit
) {
console.log(
`x${x}, y${y} is not safe but also not dangerous, considering`
);
safestMove = { x, y };
}
}
if (!optimalMove) {
if (safestMove) {
console.log("no optimal move, taking safest move");
await moveTo(safestMove, agentPosition);
} else {
console.log("no safe moves, taking random move");
await takeRandomMove(agentKnowledge);
}
} else {
await moveTo(optimalMove, agentPosition);
}
console.log(agentKnowledge);
await updateKnowledge();
await nextMove(agentKnowledge);
}
async function takeRandomMove(agentKnowledge) {
if (endedGame) return;
const adjacents = getAdjacentPositions(agentPosition);
const validMoves = adjacents.filter((pos) => {
const { x, y } = pos;
return (
!agentKnowledge[x][y].potentialWumpus &&
!agentKnowledge[x][y].potentialPit
);
});
if (validMoves.length > 0) {
const randomIndex = Math.floor(Math.random() * validMoves.length);
const randomMove = validMoves[randomIndex];
console.log(
`Taking random move to x${randomMove.x}, y${randomMove.y}`
);
await moveTo(randomMove, agentPosition);
} else {
console.log("No valid moves available, considering random cells");
const unvisitedMoves = adjacents.filter(
(pos) => !agentKnowledge[pos.x][pos.y].visited
);
if (unvisitedMoves.length > 0) {
const randomIndex = Math.floor(
Math.random() * unvisitedMoves.length
);
const randomMove = unvisitedMoves[randomIndex];
console.log(
`Taking random move to x${randomMove.x}, y${randomMove.y}`
);
await moveTo(randomMove, agentPosition);
} else {
console.log("No moves available, going to visited places");
const visitedMoves = adjacents.filter(
(pos) => agentKnowledge[pos.x][pos.y].visited
);
const randomIndex = Math.floor(Math.random() * visitedMoves.length);
const randomMove = visitedMoves[randomIndex];
console.log(
`Taking random move to visited x${randomMove.x}, y${randomMove.y}`
);
await moveTo(randomMove, agentPosition);
}
}
}
function getAdjacentPositions(position) {
const adjacents = [];
if (position.x > 0)
adjacents.push({ x: position.x - 1, y: position.y });
if (position.x < SIZE - 1)
adjacents.push({ x: position.x + 1, y: position.y });
if (position.y > 0)
adjacents.push({ x: position.x, y: position.y - 1 });
if (position.y < SIZE - 1)
adjacents.push({ x: position.x, y: position.y + 1 });
return adjacents;
}
function updateKnowledge() {
if (endedGame) return;
const x = agentPosition.x;
const y = agentPosition.y;
agentKnowledge[x][y].visited = true;
agentKnowledge[x][y].potentialPit = false;
agentKnowledge[x][y].potentialWumpus = false;
if (isAdjacentTo({ x, y }, wumpusPosition))
agentKnowledge[x][y].stench = true;
if (isAdjacentTo({ x, y }, goldPosition))
agentKnowledge[x][y].glitter = true;
if (isAdjacentToPit({ x, y })) agentKnowledge[x][y].breeze = true;
agentKnowledge[x][y].safe = true;
// Propagar informações de percepção
propagatePerception(x, y);
}
async function propagatePerception(x, y) {
if (endedGame) return;
const adjacents = getAdjacentPositions({ x, y });
adjacents.forEach((pos) => {
if (agentKnowledge[pos.x][pos.y].visited) return;
if (agentKnowledge[x][y].glitter) {
agentKnowledge[pos.x][pos.y].potentialGold = true;
}
if (agentKnowledge[x][y].stench) {
if (isWumpusAlive) {
const { foundInLine, directionLine } = checkForWumpusLines(x, y);
const { foundInDiagonal, directionDiagonal } =
checkForWumpusDiagonal(x, y);
if (foundInLine)
discoveredWumpus = {
found: foundInLine,
relativePosition: directionLine,
};
else if (foundInDiagonal)
discoveredWumpus = {
found: foundInDiagonal,
relativePosition: directionDiagonal,
};
agentKnowledge[pos.x][pos.y].potentialWumpus = true;
}
}
if (agentKnowledge[x][y].breeze) {
if (!agentKnowledge[pos.x][pos.y].visited)
agentKnowledge[pos.x][pos.y].potentialPit = true;
}
if (!agentKnowledge[x][y].stench && !agentKnowledge[x][y].breeze) {
agentKnowledge[pos.x][pos.y].safe = true;
}
});
}
function isInbounds(x, y) {
return x >= 0 && x < SIZE && y >= 0 && y < SIZE;
}
function checkForWumpusDiagonal(x, y) {
if (!isWumpusAlive) return;
if (isInbounds(x + 1, y - 1) && agentKnowledge[x + 1][y - 1].stench) {
console.log("found");
}
if (isInbounds(x + 1, y + 1) && agentKnowledge[x + 1][y + 1].stench) {
console.log("found");
console.log("if", x + 1, y + 1 - 1);
if (
!agentKnowledge[x + 1][y + 1 - 1].safe ||
!agentKnowledge[x + 1][y + 1 - 1].visited
) {
console.log("found - right");
return { foundInDiagonal: true, directionDiagonal: "right" };
} else {
console.log("found - down");
return { foundInDiagonal: true, directionDiagonal: "down" };
}
}
if (isInbounds(x - 1, y + 1) && agentKnowledge[x - 1][y + 1].stench) {
console.log("found");
console.log("if", x - 1, y + 1 - 1);
if (
!agentKnowledge[x - 1][y + 1 - 1].safe ||
!agentKnowledge[x - 1][y + 1 - 1].visited
) {
console.log("found - left");
return { foundInDiagonal: true, directionDiagonal: "left" };
} else {
console.log("found - down");
return { foundInDiagonal: true, directionDiagonal: "down" };
}
}
if (isInbounds(x - 1, y - 1) && agentKnowledge[x - 1][y - 1].stench) {
console.log("found");
console.log("if", x - 1, y - 1);
if (
!agentKnowledge[x - 1 + 1][y - 1].safe ||
!agentKnowledge[x - 1 + 1][y - 1].visited
) {
console.log("found - right");
return { foundInDiagonal: true, directionDiagonal: "right" };
} else {
return { foundInDiagonal: true, directionDiagonal: "down" };
}
}
return { foundInDiagonal: false, directionDiagonal: null };
}
function checkForWumpusLines(x, y) {
if (!isWumpusAlive) return;
let directionToVerify = null;
console.log("checking for wumpus around", x, y);
if (y >= 2) directionToVerify = "above";
else directionToVerify = "bellow";
console.log("v1", directionToVerify);
if (directionToVerify === "above" && agentKnowledge[x][y - 2]?.stench)
return { foundInLine: true, directionLine: "up" };
if (directionToVerify === "bellow" && agentKnowledge[x][y + 2]?.stench)
return { foundInLine: true, directionLine: "down" };
if (x >= 2) directionToVerify = "left";
else directionToVerify = "right";
console.log("v2", directionToVerify);
if (directionToVerify === "left" && agentKnowledge[x - 2][y]?.stench)
return { foundInLine: true, directionLine: "left" };
if (directionToVerify === "right" && agentKnowledge[x + 2][y]?.stench)
return { foundInLine: true, directionLine: "right" };
return { foundInLine: false, directionLine: null };
}
run();
</script>
</body>
</html>