Fov and Split

[PythonCode]

in Lua, camera:SetFov(##) crashes the engine.

in Lua,  this Split command crashes the game engine.

local sarr = s:Split(",")

 

[PythonCode]

Also something is just not right with lua tables and arrays, I purchased an O'Rileys lua book to learn lua with and this example comes striaght out of the book for lua 5.4 and it errors in the Ultra engine.

 

N = 10

M = 10

mt = {}          -- create the matrix

for i=1,N do

  for j=1,M do

    mt[i*M + j] = 0

  end

end

 

[PythonCode]

To simplify the problem either further; this example fails.  This should not fail, it's the easiest of 2-dim tables/arrays that lua has to offer. 

 

p = {}

for t = 1 , 10 do

    p[t] = {}

end

p[1][1] = 1

 

[PythonCode]

I've noticed that adding Local to the p = {} seems to have corrected it, plus Split(variable, dilmeter) works.. so only thing I could not get working is SetFov()

 

[Josh]

2 hours ago, PythonCode said:

in Lua, camera:SetFov(##) crashes the engine.

in Lua,  this Split command crashes the game engine.

local sarr = s:Split(",")

The correct syntax for the command in Lua is like this:

s = "1, 2, 3"
sarr = Split(s,  ",")

I added these a while back, but the docs need some updating. Let me see about that.

BTW, the console in the editor is a convenient way to test Lua code. Just make sure that any variables you set are not local, or they will get collected right after the code executes.

[Josh]

It seems that Camera:SetFov is working correctly. I tried this in the console:

> cam = CreateCamera(nil)
> cam:SetFov(90)
> cam
userdata
> a = cam.SetFov
> a
function

Perhaps the camera variable is nil or the argument for the angle is not a number?

[PythonCode]

Hmmm  debug gives me this:

 

    cam:Turn(55,0,0)

    cam:SetFov(90)

 

sol: runtime error: C:/Ultra/Defense/Source/MapLoad.lua:36: attempt to call a nil value (method 'SetFov') stack traceback: C:/Ultra/Defense/Source/MapLoad.lua:36: in function 'base.MapLoad'

[Josh]

Maybe the "cam" variable is an entity, and has to be cast to a camera?

cam = Camera(entity)

 

[Josh]

On 7/16/2024 at 8:08 AM, PythonCode said:

Also something is just not right with lua tables and arrays, I purchased an O'Rileys lua book to learn lua with and this example comes striaght out of the book for lua 5.4 and it errors in the Ultra engine.

N = 10

M = 10

mt = {}       

for i=1,N do

  for j=1,M do

    mt[i*M + j] = 0

  end

end

On 7/16/2024 at 8:10 AM, PythonCode said:

To simplify the problem either further; this example fails.  This should not fail, it's the easiest of 2-dim tables/arrays that lua has to offer. 

p = {}

for t = 1 , 10 do

    p[t] = {}

end

p[1][1] = 1

I ran both of these examples in the editor console (after removing the comment in the first one) and they ran without any trouble.

You can just copy and paste them into a single line, hit enter, and they work fine.

If you paste this into the editor console it will print out '1':

p = {} for t = 1, 10 do p[t] = {} end p[1][1] = 1 Print(p[1][1])

 

[Josh]

Lua string documentation has been updated. It will take a couple hours for the docs system to recache the new pages:
https://github.com/UltraEngine/Documentation/blob/master/Lua/Strings.md

[Josh]

I believe this is all resolved. Please let me know if there are any problems.