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Pythagoras theorem in Lua Help

 
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MikeNoey
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Joined: 08 Jun 2018
Posts: 64
PostPosted: Fri Aug 10, 2018 1:24 am    Post subject: Pythagoras theorem in Lua Help Reply with quote
Hi guys. First of all I just want to admit that Math isn't my strong suit. I could use some help with this problem. Now I have the addresses for Z and X coordinates for my current location and the Z and X coordinates for the thing I have targeted in the game I'm playing and I want to be able to calculate the distance in meters between my own character and my target. I believe the way to do this is using Pythagoras Theorem.


local MyZCoords = ReadFloat("blablabla")
local MyXCoords = ReadFloat("blablabla")
local TargetZCoords = ReadFloat("blablabla")
local TargetXCoords = readFloat("blablabla")




If someone could help me fill in the part of the script involving the Pythagoras theorem I'd appreciate it. I meannnnn really appreciate it. Thanks in advance
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Dark Byte
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PostPosted: Fri Aug 10, 2018 2:37 am    Post subject: Reply with quote
Code:

(Target)
 |\
 | \
a|  \c
 |   \
 ------ (MyCoords)
   b

z
^
|
-->x


a=|TargetYCoords-MyYCoords|
b=|MyXCoords-TargetXCoords|
c=√(aČ+bČ)

In lua that'd be:
Code:

a=math.abs(TargetYCoords-MyYCoords) --abs is not really necessary but just to make things understandable)
b=math.abs(MyXCoords-TargetXCoords)
c=math.sqrt(a*a+b*b)

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Corroder
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Joined: 10 Apr 2015
Posts: 1668
PostPosted: Fri Aug 10, 2018 6:13 am    Post subject: Reply with quote
into a function

Code:
function distanceFrom(x1,y1,x2,y2) return math.sqrt((x2 - x1) ^ 2 + (y2 - y1) ^ 2) end

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