How do you make a radius player detection?
I was wondering if there is a way to detect if there is a player within a custom radius. I'm currently using invisible bricks and the Touched Event, but I don't think this is the best way. I've searched on Roblox Wiki and couldn't find anything :(
Any suggestions?
3 answers
There are two ways to check for a distance in roblox that I usually use for this sort of thing. The first is a method of the roblox Player object:
1 | local player = game.Players.Player1 |
2 | local radius = 5 |
3 |
4 | if player:DistanceFromCharacter(Vector3.new(1,433,656)) < radius then --Vector3 can be the Position property of a part if you want. |
5 | print('player is within radius') |
6 | end |
The other technique involves the use of some simple vector math:
1 | local position1 = Vector3.new(12031,13123,3123) |
2 | local position2 = Vector3.new(12031,3123,13123) |
3 |
4 | local distance = (position1 - position2).magnitude |
5 |
6 | --You can use this distance to check for the range the same way as you do with the first method. |
Basically, I use the first option when I am checking for distances with a player, and have access to the player, and I use the second option when I am just checking distances between random objects or I do not have access to the player.
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You could always use Magnitude, to see if the player is with-in a certain radius.
I recommend reading this part of the Wiki: (http://wiki.roblox.com/index.php/Magnitude)
If you have a reference to each player, say for example player1 and player2, you can compare the distance between them with a threshold like-so:
1 | distanceThreshold = 10 |
2 | distance = (player1.Character.Torso.CFrame.p - player2.Character.Torso.CFrame.p).Magnitude |
3 | if distance < distanceThreshold then |
4 | --Do something for close proximity |
5 | end |
... and as JuHDude suggests, read the article on Magnitude, but I also recommend reading about the Vector3 type in general.