Triangle UIView - Swift

Question

So I\'m making a game in which I am dropping objects which have to be destroyed by a spike(triangle) at the bottom of the screen by a user.

I cannot work out how to

Answer 1

I have tried a PNG triangle but it detects the collision as the border of the image not the start of the triangle.

There is nothing you can do about that if you're going to use simple-minded collisions (e.g. the built-in UIKit Dynamics - it does only rectangular view collisions). If you want advanced shape collisions, either you must implement them yourself or you must use Sprites.

and for the user to move it

That is much easier to deal with: simply override hitTest for this view and return nil if the place the user touches is outside the borders of the triangle image.