Detecting If Vehicle Approaches Person - Printable Version

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+--- Thread: Detecting If Vehicle Approaches Person (/showthread.php?tid=294780)

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Detecting If Vehicle Approaches Person - Simon - 03.11.2011

Code!

Hey,

With this code above I'm trying to see if a velocity vector will intersect with a players position. I want to be able to detect if somebody is driving at a player when they press KEY_FIRE, however, this does not appear to work at all by doing the following steps:

• Normalize the velocity vector so it has length 1.0
• Get the distance between the vehicle and the player
• Multiply the velocity vector to be that length
• Calculate a projected point by adding the scaled velocity vector to the vehicles position
• Finally, check if the projected point is in range of the player

My understanding tells me this should work? Is my understanding of this vector magic incorrect?

Thanks for any help!

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Re: Detecting If Vehicle Approaches Person - CyNiC - 03.11.2011

I suggest you to use GetPlayerCameraFrontVector, since you can get a more accurately projectile position based on the player camera.

https://sampwiki.blast.hk/wiki/GetPlayerCameraFrontVector

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Re: Detecting If Vehicle Approaches Person - Simon - 03.11.2011

Thanks for the suggestion, however the players camera direction can be changed with the flick of the mouse. It would work nicely if the camera always faced forward.

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Re: Detecting If Vehicle Approaches Person - Simon - 06.11.2011

Any other suggestions? Pwetty pwease.

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Re: Detecting If Vehicle Approaches Person - Kar - 09.06.2013

I know this post is old, but I've seen recently people wanted the same thing

- Project a point infront of the player
- Check the distance between the vehicle and player
- Check the angle between the vehicle and player or of vehicle
If the angle is in a range that the vehicle is going left or right, and the vehicle has velocity, then yes they drived passed the player
If the angle is directly inversely proportional with a range to the player then the vehicle is coming straight to them, if not, then they are going away from them

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