Re: Help with "facing" routine
I need a little more.
Are you sending me the current x,y of the character and the x,y of the
point to which you want a 1-24 reference returned ?
At 12:44 AM 7/1/98 +0200, you wrote:
>I would like some help on a function that should work like this:
>
>I pass it two sequences, the first one containing the coordinates of the
>active character, the second one containg the coordinates of the point that
>the active character should look at. I have a total of 24 facings, the first
>one being directly up, the second 15 degrees to the right, the second 30
>degrees to the right, and so on. They are indexed 1-24. The function is
>supposed to return the facing index that most closely matches the character
>looking towards the point. If anyone out there which is more stable at
>mathematics like this could help me with the routine (it should be as fast
>as possible, since it will be called many times each frame of the game) then
>I would be very grateful. I've started working on it, but now I'm both lazy
>and tired, and I'm not too keen on this kind of mathematics. Following is an
>outline of the function:
>
>function determine_facing(sequence char_pos, sequence point)
> -- find the closest match of the 24 possibilites
> return facing -- 1 to 24
>end function
>
>Any help is greatly appreciated, the main thing I'm out for is the fastest
>way to find the angle which the point is at, relative to the character,
>either in degrees (or radians) or even better expressed with the indexes.
>
>Einar (who hopes his english is not _totally_ hopeless)
>
Joe Phillips, Assistant Director
Information Technology Services
Texas Wesleyan University 817-531-4284
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