Sun and Moon Feature.

[Krock]

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minetest.after(0,set_sky(nil,skybox,{"a.png","b.png","c.png","d.png","e.png","f.png"}))

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minetest.register_on_joinplayer(function(player)
    minetest.after(0, function()
        player:set_sky(bgcolor, type, {texture names})
    end)
end)

That's how I understood the lua API of minetest

[nfsprodriver]

Sounds good! Now I allways got that problem:

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20:22:35: ERROR[main]: ServerError: E:\minetest-0.4.9-dev-win64\bin\..\mods\skybox\init.lua:3: bad argument #2 to 'set_sky' (string expected, got nil)
20:22:35: ERROR[main]: stack traceback:
20:22:35: ERROR[main]:     [C]: in function 'set_sky'
20:22:35: ERROR[main]:     E:\minetest-0.4.9-dev-win64\bin\..\mods\skybox\init.lua:3: in function 'func'
20:22:35: ERROR[main]:     E:\minetest-0.4.9-dev-win64\bin\..\builtin/misc.lua:17: in function <E:\minetest-0.4.9-dev-win64\bin\..\builtin/misc.lua:9>
20:22:35: ERROR[main]:     ...inetest-0.4.9-dev-win64\bin\..\builtin/misc_register.lua:348: in function <...inetest-0.4.9-dev-win64\bin\..\builtin/misc_register.lua:336>

So, what do I have fo enter in the set_sky section?

[RealBadAngel]

Sounds good! Now I allways got that problem:

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20:22:35: ERROR[main]: ServerError: E:\minetest-0.4.9-dev-win64\bin\..\mods\skybox\init.lua:3: bad argument #2 to 'set_sky' (string expected, got nil)
20:22:35: ERROR[main]: stack traceback:
20:22:35: ERROR[main]:     [C]: in function 'set_sky'
20:22:35: ERROR[main]:     E:\minetest-0.4.9-dev-win64\bin\..\mods\skybox\init.lua:3: in function 'func'
20:22:35: ERROR[main]:     E:\minetest-0.4.9-dev-win64\bin\..\builtin/misc.lua:17: in function <E:\minetest-0.4.9-dev-win64\bin\..\builtin/misc.lua:9>
20:22:35: ERROR[main]:     ...inetest-0.4.9-dev-win64\bin\..\builtin/misc_register.lua:348: in function <...inetest-0.4.9-dev-win64\bin\..\builtin/misc_register.lua:336>

So, what do I have fo enter in the set_sky section?

Heres the code:

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minetest.register_on_joinplayer(function(player)
    minetest.after(0, function()
        textures ={
        "pink_planet_pos_y.png",
        "pink_planet_neg_y.png",
        "pink_planet_pos_z.png",
        "pink_planet_neg_z.png",   
        "pink_planet_neg_x.png",
        "pink_planet_pos_x.png",
        }
       
        player:set_sky({r=0, g=0, b=0, a=0},"skybox", textures)
    end)
end)


[nfsprodriver]

Thank you very much!!! For now it works. Perfect. How do you create mods depending by time, so, I want to have more skies for day, dawn, night, etc.? So, how can I define time-borrows?

I allready got this:

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local timer = 0
minetest.register_globalstep(function(dtime)
if timer<5 then
        timer = timer+dtime
        return
    end
    timer = 0
if minetest.get_timeofday() > 0.3 and minetest.get_timeofday() < 0.7 then
minetest.register_on_joinplayer(function(noon)
    minetest.after(0, function()
        textures ={
        "sky1.png",
        "sky2.png",
        "sky3.png",
        "sky4.png",   
        "sky5.png",
        "sky6.png",
        }
        noon:set_sky({r=0, g=0, b=0, a=0},"skybox", textures)
    end)
end)

elseif minetest.get_timeofday() < 0.3 or minetest.get_timeofday() > 0.7 then
minetest.register_on_joinplayer(function(afternoon)
    minetest.after(0, function()
        textures ={
        "sky2.png",
        "sky1.png",
        "sky3.png",
        "sky4.png",   
        "sky5.png",
        "sky6.png",
        }
        afternoon:set_sky({r=0, g=0, b=0, a=0},"skybox", textures)
    end)
end)
end
end)

But there's no difference between the times of the day. What do I make wrong?

[RealBadAngel]

You are using minetest.register_on_joinplayer function which is called only when a player joins the server,,,,
Also it is unlikely that objects noon or afternoon will join it ;)

You shall iterate over all connected players on skybox change event and set it for everyone.
Also you shall have flag which skybox is being active.
if it is night and daytime skybox is active then trigger the change to nightime one, and vice versa.
Otherwise it will be setting skyboxes all time.

[nfsprodriver]

That really makes sense. Do you think of

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minetest.env:somefunction(somearguments)

?
Or should I rewrite the globalstep to my specific functions? And do I really need the after-code?

I'm sorry about all these for you simple questions, but I'm just a beginner about mods, because this is "my" first and I only have some Greenfoot knowledge from my half-year-informatic lessons. I'm still trying understanding the minetest lua commands.

Thanks for all of your help and patience!!!