I'm trying to create a game in which a projectile is launched at a random angle.
To do this I need to be able to generate two random Int's. I looked up some tutorials and came up with this:
var random = CGFloat(Int(arc4random()) % 1500)
var random2 = CGFloat(Int(arc4random()) % -300)
bullet.physicsBody!.velocity = CGVectorMake((random2), (random))
What I find I use the most is
arc4random_uniform(upperBound) which returns a random Int ranging from zero to upperBound -1.
let random = arc4random_uniform(1500) let random2 = arc4random_uniform(300) * -1 //pick a number between 1 and 10 let pick = arc4random_uniform(10)+1
The lowdown on the arc4 functions: arc4random man page
GameplayKit has a nice class wrapping the arc4 functions: GameplayKit Randomness
and a handy reference: Random Hipster