Script to get reciprocal wind as text message using F10 radio

[WildBillKelsoe]

So my learning curve is bad and I want to put some code like this to read wind-180 into a F10 message:

 

io.read = n

if n > 180 then

a = -1*(180-n)

else

if n < 180 then

a = 180-n

print (a)

end

 

 

so what this does is to take a wind direction blowing to and converts it to winds coming from. :smilewink:

 

I want to take the mission wind value from an unknown lua for ground level and that figure runs thru this code to get an upwind value. Better yet is there anyway to extract ground wind from mission file?

[Zayets]

Sure there is :atmosphere.getWind(table vec3 ) and atmosphere.getWindWithTurbulence(table vec3 )

[Hardcard]

So my learning curve is bad and I want to put some code like this to read wind-180 into a F10 message:

 

io.read = n

if n > 180 then

a = -1*(180-n)

else

if n < 180 then

a = 180-n

print (a)

end

 

 

so what this does is to take a wind direction blowing to and converts it to winds coming from. :smilewink:

 

I want to take the mission wind value from an unknown lua for ground level and that figure runs thru this code to get an upwind value. Better yet is there anyway to extract ground wind from mission file?

 

It would be cool if you could post the final script here once you get it working.

Nice function to have in any mission :thumbup:

[WildBillKelsoe]

Sure there is :atmosphere.getWind(table vec3 ) and atmosphere.getWindWithTurbulence(table vec3 )

 

where did you get this from?

[Zayets]

https://wiki.hoggitworld.com/view/DCS_func_getWind

[WildBillKelsoe]

https://wiki.hoggitworld.com/view/DCS_func_getWind

 

 

thanks.

 

the code works in LDT in Eclipse. Just want to limit input to 0-359 and output to 0-360. Any idea how to do it?

 

local line

repeat

print("Input wind heading: ");

line = io.read() -- read a line

n = tonumber(line) -- try to convert it to a number

k = tonumber(line)

k = 180-n

if n > 180 then

print("Reciprocal heading is: ",-k)

elseif n < 180 then

print("Reciprocal heading is: ", n+180)

else n = 180

print ("are you kidding me?")

end

print("do you want to convert again? y/n?")

line = io.read()

until line ~= "y"

print("Goodbye")

[Wrench]

There's a chunk of code that does that in my carrier script, posted in the missions section. Feel free to yank it out.

I can write a function for it if you'd like next time I sit down to do some scripting.

[WildBillKelsoe]

There's a chunk of code that does that in my carrier script, posted in the missions section. Feel free to yank it out.

I can write a function for it if you'd like next time I sit down to do some scripting.

 

 

That would be great. Thanks for the intel.

[Wrench]

One thing I need to know, readback reciprocal of wind direction at what point?

by default, my script uses a unit's position (could be a unit you plonk somewhere to read wind from)

This way, it'll work with both dynamic and static weather.

 

anyway, here's the function.

 

function wrench_get_wind_recip(unit1)
local wind = {}
local pos1 = Unit.getPosition(Unit.getByName(unit1)).p
if pos1 ~= nil then
	pos1.y=pos1.y+1
	--get wind info
	wind = atmosphere.getWind(pos1)
	windspeed = mist.vec.mag(wind)
	windspeed = windspeed * 1.94384
	--get wind direction sorted
	local dir = math.atan2(wind.z, wind.x) * 180 / math.pi
	if dir < 0 then
		dir = dir + 360 --converts to positive numbers		
	end
	if dir <= 180 then
		dir = dir + 180
	else
		dir = dir - 180
	end
	if dir > 360 then
		dir = dir - 360
	end
	wind = math.floor(dir)
	windspeed = math.floor(windspeed)
	outstring = 'Wind is from ' .. wind .. ' at ' .. windspeed .. ' Knots.'
	trigger.action.outText(outstring, 2)
else
	trigger.action.outText('unit not detected', 2)
end
end

 

You can use a RADIO ITEM ADD and a SWITCHED CONDITION trigger to call the function.

Something like the radio item sets flag 1 ON.

Then a SWITCHED CONDITION activated by flag 1 will call the function (more on this in a second) and set flag 1 back to OFF.

 

To call the function, simply use this line:

 

wrench_get_wind_recip('unit1')

 

but replace unit1 with the name of your unit (leave the single quotes.)

[WildBillKelsoe]

On landing back at base so I will set a trigger zone to activate say an hour into the mission and once unit is detected inside it, it shall prompt the wind reciprocal by request thru F10 radio. Thanks a bunch man!