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# Stealth  Game Example

Here is an example of object-oriented programming in JavaScript for a hypothetical stealth computer game:

```javascript
class GameObject {
  constructor(x, y) {
    this.x = x;
    this.y = y;
  }
  
  move(deltaX, deltaY) {
    this.x += deltaX;
    this.y += deltaY;
  }
}

class Player extends GameObject {
  constructor(x, y, name) {
    super(x, y);
    this.name = name;
    this.stealth = 100;
  }
  
  hide() {
    this.stealth = 100;
  }
  
  sneak(deltaX, deltaY) {
    this.stealth -= 10;
    super.move(deltaX, deltaY);
  }
}

class Guard extends GameObject {
  constructor(x, y) {
    super(x, y);
  }
  
  chase(player) {
    let deltaX = player.x - this.x;
    let deltaY = player.y - this.y;
    this.move(deltaX, deltaY);
  }
}

const player = new Player(10, 10, "Bob");
const guard = new Guard(50, 50);

player.sneak(1, -1);
console.log(player.stealth); // 90
guard.chase(player);
console.log(guard.x); // 11
console.log(guard.y); // 9
```

In this example, we have a base `GameObject` class that represents any object in the game that has a position (x, y). The `Player` class and the `Guard` class both extend the `GameObject` class, so they inherit its properties and methods. The `Player` class has additional properties and methods, such as `name` and `stealth`, and the `Guard` class has a `chase` method that moves the guard towards the player.