In creating a game using the appinventor I was running into quite a lot of problems. Programming the logic is very simple, but fine-tuning details is in a lot of cases impossible. For this reason I threw the appinventor out of the door and right now I am reinventing my game-app using Eclipse and Java. A lot more flexible and a lot more fun. The only drawback is developing it is not so fast, but this is mainly because there are a lot of things that need figuring out.
I think I will be needing a few more months to finish my first project, which is mainly caused by the lack of time I seem to have. But still, I will try to publish something every month from now, so I have a good reason to keep progressing. This dog is one of the important parts of the game. Next month something unimportant.