1    //Treasure Quest
2    let numTreasures = Math.floor(Math.random() * 4) + 2;
3    let text = "You're on a deserted island, looking for " + numTreasures + " treasures. ";
4    text += "You have a special compass that tells you how far away you are from the nearest treasure. ";
5    text += "You can travel north, south, east, or west. ";
6    text += "Find that treasure!";
7    alert(text);
8    
9    for (let i = 0; i < numTreasures; i++)
10   {
11     playGame();
12   }
13   
14   function playGame()
15   {
16     let treasures = ["silver tiara", "bar of gold", "magical scepter", "book of spells", "rod of food summoning", "leather jacket"];
17   
18     let index = Math.floor(Math.random() * treasures.length);
19     let treasure = treasures[index];
20   
21     let playerX = Math.floor(Math.random() * 5) + 3;
22     let playerY = Math.floor(Math.random() * 5) + 3;
23   
24     if (Math.random() < 0.5)
25     {
26       playerX = -playerX; //start from west
27     }
28     if (Math.random() < 0.5)
29     {
30       playerY = -playerY; //start from south
31     }
32     let steps = [];
33     let distance = getDistance(playerX, playerY);
34   
35     while (distance !== 0)
36     {
37       let direction = prompt("You are " + distance + " meters away from the treasure. Will you go north, east, south, or west?");
38       direction = direction[0].toLowerCase();
39   
40       if (direction === "n")
41       {
42         playerY++;
43         steps.push("north");
44       }
45       else if (direction === "s")
46       {
47         playerY--;
48         steps.push("south");
49       }
50       else if (direction === "e")
51       {
52         playerX++;
53         steps.push("east");
54       }
55       else if (direction === "w")
56       {
57         playerX--;
58         steps.push("west");
59       }
60       else
61       {
62         alert("That's an invalid direction.");
63       }
64   
65       distance = getDistance(playerX, playerY);
66   
67     }
68   
69     alert("You found the " + treasure + "!");
70     alert("Your path was " + steps.join(" --> ") + ".");
71   
72   }
73   
74   function getDistance(x, y)
75   {
76     let distance = Math.sqrt(x ** 2 + y ** 2);
77     distance = Number(distance.toFixed(2));
78     return distance;
79   }
80