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Rendering a weapon...

Started by Tobias Apr 6, 2000 at 2:11 PM 5 replies 800+ views

Original Post

Apr 6, 2000 at 2:11 PM

Hi, I just wonder if anyone knows how to render a gun like in QuakeX that always point in the same direction. I looked in the q1source how John did it, but that didn''t make me much wiser... There must be some good way the calculate the angle from the position and the lookat point of the camera... TIA, Tobias

Apr 6, 2000 at 4:08 PM

The angle between the lookat vector and the weapon is always the the same, it doesn''t change when playing, if you mean this.

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GA

Tobias

Apr 6, 2000 at 4:17 PM

Yes, but I want a way to calculate an x,y,z angle for my weapon so it points to the lookat point...

Greets Tobias

Apr 6, 2000 at 4:33 PM

If your angle should depend on the distance of the point you look at, you must rotate your weapon about arctan(distance from viewpoint to weapon/distance from viewpoint to lookat point), the rotation axis must be normal to the lookat vector and normal to the vector viewpoint-weapon.

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GA

Facehat

Apr 6, 2000 at 5:16 PM

You mean the little weapon you hold in front of you, right? For that, you dont perform ANY calculations on it (including camera). It should stay directly in front of you the whole time (assuming you defined the points correcly).

--TheGoop

Kertropp

Apr 6, 2000 at 8:37 PM

quote:
Original post by TheGoop
For that, you dont perform ANY calculations on it (including camera).

CAUTION, view matrix still applies

-kertropp

C:\Projects\rg_clue\ph_opt.c(185) : error C3142: 'PushAll' :bad idea
C:\Projects\rg_clue\ph_opt.c(207) : error C324: 'TryCnt': missing point

Apr 7, 2000 at 9:50 AM

I think TheGoop told you what you wanted to know because in quake (but also in all other 3d shooters I know) the weapon does not move relative to the player.

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GA

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