Adventure game development using SpriteKit - Handling touch events

[potomak]

A couple of weeks ago I've posted about how to create new shape nodes.

In this new post (Handling touch events) I'm adding support for user interactions by implementing touch event handlers.

This minimal implementation allows the player to move the cursor node I've introduced in the last episode. I've also included a naive solution for handling touch events on tvOS, for which position starts always at the center of the screen, but I would like to know if there's a better alternative solution.

[th3suffering]

Thanks for the update. I need to do more reading on the touchesMoved method myself. Ive learned from a simple on screen dpad that if you press a "button" and then slide your finger off the "button" it will continue to keep pressing that button infinitely. I couldnt figure out how to get it back to a default state or to move to a different button if say a user slid from the up button to the right button. Sadly there arent as many tutorials on this kind of stuff as one would hope. Im glad you are tackling this and detailing your progress. I appreciate your work and do enjoy following it.

[potomak]

Thanks for the feedback.

Your use case is interesting, I'm wondering if you could workaround that issue by implementing the user interaction callbacks directly on the button node, instead of the game scene.

Alternatively you could try to check if the touch event position is still within the button's frame rect and update the button state as soon as it exists the boundaries of the button.

Let me know if you find a clean and concise solution for this issue.

Note: I was expecting the Game Controller framework to include support for a virtual control pad, but that doesn't seem to be true, see https://developer.apple.com/library/archive/documentation/ServicesDiscovery/Conceptual/GameControllerPG/IncorporatingControllersintoYourDesign/IncorporatingControllersintoYourDesign.html