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Newcomers DBPro Corner / 3rd-Person Camera

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Mattman
21
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Joined: 5th Jun 2003
Location: East Lansing
Posted: 19th Jul 2003 22:58
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I want third person camera in my game, but i can't figuire out hoe to stay behind the car at all times. I would like it that when the car moves, so does the camera. Is this possible?
---Mattman
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Scorpyo
22
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Joined: 26th Aug 2002
Location: italy
Posted: 19th Jul 2003 23:33
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here s a subroutine to do that:

update_camera:
rem Position camera to the back of the character
ca#=wrapvalue(a#)
cx#=newxvalue(x#,ca#,-100)
cz#=newzvalue(z#,ca#,-100)
cy#=get ground height(car,x#,z#)
position camera cx#,cy#,cz#
rem Point camera at object
point camera x#,cy#,z#
return

a#=car angle
x#= car x position
z#=car z position
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Zinc Avenger
21
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Joined: 29th Jan 2003
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Posted: 19th Jul 2003 23:33
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What I do when I want the camera to follow something is to keep setting the position of a hidden plane to the x, y and z of the object you want to follow, then position the camera relative to that object.

See the attached code.

In the code below, CAMTARGET is the hidden plane which follows the object. I can change which object is being followed by changing the value of FOCUS to the number of the object being followed. CAMDIST is the distance between the camera and the object being followed.

You could perhaps add a bit to make CAMTARGET point in the same direction as the object being followed, as the code attached won't do that for you (I have that part in a separate function, controlled by user input).

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Mattman
21
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Joined: 5th Jun 2003
Location: East Lansing
Posted: 25th Jul 2003 06:24
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Sorry, i haven't been here, camera has been on bottom of list of things to do lately.

Scorpio: for a#, which angle? anglex, angley, or angle z?

Zinc : Neat idea, i will give both codes a try

---Mattman
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Scorpyo
22
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Joined: 26th Aug 2002
Location: italy
Posted: 26th Jul 2003 00:04
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Sorry i did not specify it..it's the Y angle
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Mattman
21
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Joined: 5th Jun 2003
Location: East Lansing
Posted: 26th Jul 2003 05:00
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Will try in a minute...

---Mattman
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