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Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today. # The code in the video is wrong

The enemy died two times in the example. And why does the inRange function need that much parameters?

I corrected the code (you're welcome)

```struct Point {
let x: Int
let y: Int

init(x: Int, y: Int) {
self.x = x
self.y = y
}

func surroundingPoints(withRange range: Int = 1) -> [Point] {

var result: [Point] = []

for xCoord in (self.x-range)...(self.x+range) {
for yCoord in (self.y-range)...(self.y+range) {
result.append(Point(x: xCoord, y: yCoord))
}
}

return result

}
}

class Enemy {
var life: Int = 100
var position: Point

init(x: Int, y: Int) {
self.position = Point(x: x, y: y)
}

func decraeseHealth(factor: Int) {
life -= factor
}
}

class Tower {
let position: Point
var range: Int = 1
var strength: Int = 1

init(x: Int, y: Int) {
self.position = Point(x: x, y: y)
}

func fireAtEnemy(enemy: Enemy) {
if(inRange(enemy)) {
while enemy.life > 0 {
enemy.decraeseHealth(self.strength)
if (enemy.life == 0) {
print("Enemy died")
}
}
} else {
print("Enemy is out of range");
}
}

func inRange(enemy: Enemy) -> Bool {

let target = enemy.position
let availabePosition = position.surroundingPoints(withRange: range)

for point in availabePosition {
if (point.x == target.x) && (point.y == target.y) {
return true
}
}
return false
}

}

let tower = Tower(x: 2, y: 2)
let enemy = Enemy(x: 1, y: 2)

tower.fireAtEnemy(enemy)
```