Ray picking in first person

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Hi :) I have been searching for weeks and can't find a solution. Can sum1 please tell me how to implement ray picking when using a first person camera. Where exactly in the formula are you suppossed to include the camera's direction?? If anyone has any solution or working coding of this please comment

Thank you very much

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thecoshman On

This site is going to explain it a lot better then I could

http://www.toymaker.info/Games/html/picking.html

Is a really good site.