Using a combination of the keyboard reader and the camera control components for Grasshopper, it is possible to create a rather cool video-game-like keyboard control for walking around your Rhino/Grasshopper file.
Make sure you have installed the keyboard reader. Then click the link below to download the example Grasshopper file. This uses WASD controls, though you can remap the controls as you please.
Video game control for Grasshopper: example file
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