[SOLVED MYSELF]Something wrong with the so called map in the helper methods video

Question

Okay so everything in my code works. And I was pleased when it all worked out and I felt happy about it. This was the example in the helper methods video in the swift object course. But there is a problem. The map of the game has different coordinates and the bottom left of the map should have the x and y value of 0. But it seems as though it is the top right corner? Because to get the Enemy in range (you sould understand when you see my code) is at x: -1 and y: -1. But, in the video it's x: 1, y: 1. What have I done wrong? It might be a small error but I can't find it ;(

Note: The error should be somewhere around the the "surroundingPoints()" method in the Point struct.

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 results: [Point] = []
        for xCoord in (x-range)...(y-range) {
            for yCoord in (y-range)...(y+range) {
                let coordinatePoint = Point(x: xCoord, y: yCoord)
                results.append (coordinatePoint)
            }
    }
        return results
 }
}

class Enemy{
    var life: Int = 2
    var position: Point

    init(x: Int, y: Int){
        self.position = Point(x: x, y: y)
    }
    func decreaseHealth(factor: Int) -> Void{
        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) -> Void {
        if inRange(self.position, range: self.range, target: enemy.position) {
            while enemy.life > 0 {
                enemy.decreaseHealth(self.strength)
                print("Enemy vanquished!")
            }
        } else{
            print("Darn, the enemy is out of range")
        }

    }
    func inRange(position: Point, range: Int, target: Point) -> Bool {
        let availablePositions = position.surroundingPoints(withRange: range)
        for point in availablePositions {
            if (point.x == target.x) && (point.y == target.y) {
                return true
            }
        }
        return false
    }
}


let tower = Tower(x: 0, y: 0)
let enemy = Enemy(x: -1, y: -1)

Thank you for taking the long time to read through all of this! :D

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Nils Garland

Nils Garland

[SOLVED MYSELF]Something wrong with the so called map in the helper methods video