CODEWITHSUNDEEP
iosswift
ASKASK
ASKASK

Reputation: 667

Swift "Cannot invoke '-=' with argument list of type '(@lvalue CGFloat, $T7)'

Can someone please explain to me why I am getting this error message when I try to run this code:

let sprite = SKSpriteNode(imageNamed:"Spaceship")

sprite.xScale = 0.5
sprite.yScale = 0.5
sprite.position = location

self.addChild(sprite)

var dt: Float = 1.0/60.0

sprite.position.x -= 100.0*dt;

The error message appears on the last line by the way

Upvotes: 0

Views: 5196

Answers (1)

Bryan Chen
Bryan Chen

Reputation: 46598

you need to change dt to CGFloat because sprite.position.x have type of CGFloat

var dt: CGFloat = 1.0/60.0

in Swift, arithmetic operators require both operands have same type

Upvotes: 4

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