function floor(depth: number, width: number) {
    for (let i = 0; i < width; i++) {
        for (let j = 0; j < depth; j++) {
            agent.move(FORWARD, 1);
            agent.place(DOWN);
        }
        agent.move(BACK, depth);
        agent.move(LEFT, 1);
    }
}

function roof(depth: number, width: number, steps: number) {
    agent.move(UP, 1);
    for (let k = 0; k < steps; k++) {
        floor(depth, width);
        agent.move(UP, 1);
        agent.move(RIGHT, width - 1);
        agent.move(FORWARD, 1);
        depth -= 2;
        width -= 2;
    }
}

player.onChat("9-8", function (depth, width, steps) {
    roof(depth, width, steps);
});