I've made a bunch of updates to GameTracker in the last few weeks.

1 - Player Movement Replay -- the little green streak shows the last 100 frames of the player's position and the cone represents the player's field of view for a particular frame.

2 - Time in Cell Histogram -- you can also see a blue-ish chart in the bottom left of this image. This is a new histogram feature that shows the distribution of time spent in a particular cell. This is calculated as part of the grid analysis view, which is something I've been in the process of developing for some time (other shots of that, below).

3 - Performance of the Grid Analysis View -- The basics of this view have remained the same, but I have dramatically boosted performance by cleaning up the code and being slightly more careful about where and when the Qtjambi AbstractItemModel-based objects are initialized. The threading on this piece has also been spruced-up.