# Setting Scale in First Person View

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Hi guys,

How can I set the scale of my first person world ? I want to keep the map/objects in world coordinates and have it be 1:4, meaning a 1x1 floor tile in world coordinates would be 4 feet by 4 feet. When I make a hallway that's one tile wide (equivalent to 4 feet) it's really narrow and looks like maybe 1-2 feet, I can barely go down it. How do I take into account the size of my 'guy' ? All I can set is his eye (camera) height. Also, for a normal person should I keep the perspective set to pi/4.0f ? Thank you.

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To force it to be 4 feet i would first have to define how many points big a foot is. Then figure out how many points big 1 tile is. After that I would change the scale of my world matrix to (PointsPerFoot*4)/PointsPerTile. As for your perspective question that depends on you. I think I can clearly see 90 degrees (pi/4), however if I had a huge tv, I would enjoy a higher fov because hey, who doesn't like seeing more stuff? This msdn article on setting up your perspective is pretty detailed without going overboard. http://msdn.microsoft.com/en-us/library/windows/desktop/bb205350(v=vs.85).aspx

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I can't get it to work. If I set the world coordinates to be 1 unit = 48 inches (4 feet) and set the camera to a height of 1.33 world units (64 inches=average eye height of person) I can't go down a 4 foot wide (1.0 world units) corridor without the view cutting through the walls on the left and right. I hope I'm explaining that correctly. Thanks.

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you probably want to adjust the near and far plane values smaller so that it doesnt cut the walls.

So make near plane as big as possible without making it cut, then far plane as small as possible without far away stuff getting cut away.

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