Vectors, velocities and prediction...... - Cog Forum - The Massassi Temple Forums Archive

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Vectors, velocities and prediction......

2002-12-31, 9:01 PM #1

Hell Raiser

Villianous Demon Coder

Posts: 1,735

I'm not quite sure how I would "convert" a velocity into a position so I can properly create a thing along the moving things velocity.

If the thing was moving backwards like this:

Code:

the things path   the co-ords in view  
\/ \/             \/\/
                   z
                  y+y
                   z
__
  \
   \
    |
    |

How can I accurately "predict" the things path so I can create a thing "ahead" of it?

-Hell Raiser

2002-12-31, 9:23 PM #2

Hellcat

Registered User

Posts: 715

Huh? Your picture is confussing me greatly.

Do you just want to find the position of a thing traveling at a constant velocity in x amounts of time in the future?

Team Battle.

2002-12-31, 10:14 PM #3

Hell Raiser

Villianous Demon Coder

Posts: 1,735

ok, basically, a thing is given a set velocity once, so they go flying backwards and then downwards. (when gravity has more affect)

Basically I wanna find out where the thing will be in.... 0.2 seconds.

-Hell Raiser

2002-12-31, 10:50 PM #4

*_Seifer_*

Registered User

Posts: 412

Hmm, I think this is what you want. I'm not sure.

Code:

moved=VectorScale(GetThingVel(target), 0.2);
meetpos=VectorAdd(GetThingPos(target), moved);

Get's the positon of where the thing will be in 0.2 seconds, based off it's velocity.