https://forums.factorio.com/wiki/index.php?title=Lua/Market
https://forums.factorio.com/wiki/index.php?title=Lua/Game#getentitybytag
How to use it: control.lua:

require "defines"
game.oninit(function()
local market = game.getentitybytag("market")
market.addmarketitem{price={{"iron-ore", 10 ...

I would suggest to fix your C# Application first :)
'I bet there is a better solution to this ...but well!
Yes, there is. For example: to check if string is correct IP Address you can use IPAddress.TryParse .
For port number you can use regular expressions. In PHP, as I can't test any C# right now ...

It is possible to create mod like that, but not necessarily with all things you wrote about.
For sure you can modify health (not sure about max health; I think I saw "game.player.character.maxhealth" somewhere), health regeneration (not directly; you can make player lose health if you want), mining ...

You can not do it in map editor (or i don't know how :) ). Yes, you can do it via script/mod
Here you have working (probably) script/mod:

require "defines"
local techs = {
"laser",
"steel-processing"
}
for tech in techs do
game.player.force.technologies[tech].researched = true
end

The ...

You can create "power pole" that will deliver power in 1x1 radius but it will block ability to build on that tile - there will be no point in it. Power pole prototype can not be non-blocking = it will always block buildings on tile it does exist, so it kills any reasonable way of creating it (1x1 ...

You can add this little code to your if elseif statement in onguiclick event, before end:

else
game.player.print(event.element.name or "Element missing name!")
It should print you a name of gui element clicked or "Element name missing!" in case it doesn't exists (== nil). It should never be nil ...

game.onevent(defines.events.onguiclick, function(event)
if event.element.name == "your-button-name" then
-- example: heal player
game.player.character.health = 100
-- example: add 10 iron plate
game.player.insert({name="iron-plate", count="10"})
end
end)

Not tested, but it does look like ...

Next version (0.11) that is planned for October will have multiplayer according to roadmap.
These is no point in creating mod for it now.

using (just a test)
game.onload(function()
game.daytime = 0
game.takescreenshot{}
end)
works like I expect, taking a screenshot in broad daylight. When I change it to
game.onload(function()
game.daytime = 0
game.takescreenshot{}
game.daytime = .5
end)
It takes a screenshot in the dark. I ...

Phillip_Lynx wrote:Maybe centered on Player position at start??

Setting it to 0,0 will give more consistency in case of map update (player position may change, 0,0 should always be in same place).

I don't think you do only the max zoom level in png, and the rest in jpg, because you have to specify the format in the index.html
You can use if statement in JavaScript part of index.html to load files based on zoom level.
This should theoretically work, but I can't test it right now ...

You are right Turtle, there is no need to use a mod, unless if he want it for every game / future mod techs, then mod would be ok.

Speedy45, if you want to have all technologies researched every time with modification turned on, you should do it like this:

require "defines"

game.oninit(function ...

If you would share code that you are using, then someone could help you. Right now we don't know anything.

Actually you can do regeneration bonuses with some hacking around.
You can check if technology is researched, you can run function every tick, you can have some global variables. So what is a problem? Of course you don't have real values for regeneration (how much per how many ticks) but you can ...