You could now set one up in your backyard and move around in a much larger virtual space before hitting the edge. The biggest benefit is that it allows you to scale your field down. After geometry calibration you could also calibrate your maximum speed so for example you could choose to just walk in real life and have your character run. Your resolution and accuracy would suffer a bit.ĩ. Update: Alternatively if you can find an empty space by a tall building, like an empty parking lot then you could put a single Wii really high up and calibrate your field like the Wii Whiteboard.
Walk forward into the play field to automatically unpause the game. To calibrate just keep turning until the display brightens again (this is when you are facing directly back into the play field).
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If you step outside the rectangular boundary the software will automatically pause the game, dim your HMD display, and go into calibration mode. As a bonus, you can also use the coordinates to track height changes so crouching and jumping can be detected as well.Ĩ. The coordinates from each corner will be transmitted over regular WiFi to the backtop and an average calculated to determine the in-game coordinates. You will probably need a small computer (like a netbook) at each corner to monitor each WiiMote (via BlueTooth) and for coordinate transmission. Now you should be able to run around the space and have the real-world vectors converted to game vectors. Use a magnetic/gyroscopic tracker to determine your head orientation.ħ. Between all 4 Wii's you should get total visual coverage of the edge and the rectangle that you trace out will define the virtual boundary of the game space.Ħ. Now calibrate the Wii's by walking the entire edge of the rectangle with your LED hat on. Input these distances into your calibration tool to capture the real world geometry of the field.ĥ. Use a laser range finder to determine the distance from each pole to it's neighbor. Place the poles at the 4 corners of a rectangle and face the WiiMotes towards the center of the field. The ideal location would be a football or soccer field with some power lines nearby for a strong magnetic signature.Ĥ. Build a battery powered ball with dozens of IR LED's attached to the outside and attach that to some type of hat or helmet.ģ. You can find mounting brackets for Wii here.
Fasten 4 WiiMotes to the top of the towers.
Build 4 towers out of low cost material like PVC - lets say 15 feet high. Here is a more fleshed out idea for the camera pole that basically adapts the WiiMote Whiteboard project to a large space.ġ.
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