The SlippyFlippy Challenge: Working With Sprite Kit Collision Detection

In our last installment, we ran into a problem trying to get collisions to work correctly with the obstacle. We want it to interact with the penguin, but not the game world. If we  turn on physics, either the edgeLoop on the scene  blocks the obstacle from entering the scene by , or causes very jittery …

The SlippyFlippy Challenge: Make a Better Obstacle in Sprite Kit

Build a Better Obstacle In the SlippyFlippy challenge we have a small obstacle. In Flappy Bird there are two obstacles which the bird has to pass between.  Let’s change our current obstacle into a pass-through obstacle like Flappy Bird.   Make a Random Obstacle Our current obstacle is a bit boring. It always shows up …

From Apple to Raspberry Pi: Making Round Rectangle Buttons — The Movie

When I posted yesterday about GIMP and making Buttons for Python projects on the Raspberry Pi, I had thought someone would have a tutorial for the classic pre-iOS7 rounded rectangle button. I didn't find any. Here is a video I put together of making those buttons in GIMP on the Raspberry Pi. At the end …

From Apple to Raspberry Pi: Making Icons and Cool Buttons

If there is one thing that Apple developers believe,  user interfaces needs to look cool. Looking cool often requires not text, but images on your on your controls. While  not as robust as UIView and its subclasses, Tkinter does display graphics. We can add buttons that look a lot better than the standard buttons. Make …

Living Without Storyboards or Interface Builder: Grids and a Grid Class

Using Grids As Steve Jobs liked to say… "Oh, and one more thing more thing." In my last post Living without Storyboards or Interface Builder, I mentioned scribbling on a piece of paper. I do that often, but it is helpful to go one step further: use a preset grid. The web building world, at …