Spring RTS Engine

Posted: **27 Jun 2011, 14:39**

So I've been learning Lua recently, its been fine for the most part, but now this:

  nameColorizer = string.format("\255\%s\%s\%s", R255, G255, B255)
  messageColorizer = string.format("\255\255\255\255")
  message1 = nameColorizer .. myPlayerName .. messageColorizer .. " has now sent " .. DM*10 .. " of his machines to metalhell"
  Spring.Echo(message1)

*These are just the important parts of my code.
R255 etc. are the player's colours in 0-255 (instead of 0-1 as given by Spring.teamColor)
**Originally I tried other methods, with the same result:

Code: Select all

nameColorizer = "\255\" .. R255 .. "\" .. G255.. "\" .. B255

This is my latest attempt. It works as you would expect except the colour of the player name doesn't work properly.
As far as I can tell, it doesn't interpret the nameColorizer string in the same way as it does for messageColorizer (which makes the rest of the message white). Any ideas on how to get this to work?

Posted: **27 Jun 2011, 15:04**

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local colors = {
	--factions
	EFFColor		= {0.80, 0.80, 1.00, 1},
	EFFTrimColor	= {0.80, 0.80, 1.00, 1},

	ZEONColor		= {0.95, 1.00, 0.70, 1},
	ZEONTrimColor	= {1.00, 0.80, 0.60, 1},

	neutralColor		= {1.00, 1.00, 1.00, 1},
	neutralTrimColor	= {1.00, 1.00, 1.00, 1},
	
	--resource colors
	exoColor	= {0.78, 0.40, 0.78, 1},
	refColor	= {1.00, 1.00, 0.30, 1},
	matColor	= {1.00, 0.30, 0.30, 1},
	nrgColor	= {0.30, 0.88, 1.00, 1},
	--damage class crap
	epColor		= {1.00, 0.90, 0.03, 1},
	bmtColor	= {1.00, 0.03, 1.00, 1},
	ltColor		= {0.58, 0.58, 1.00, 1},
	mdColor		= {0.20, 0.90, 0.20, 1},
	--only armor classes
	hvColor		= {0.50, 0.50, 0.50, 1},
	blColor		= {1.00, 0.10, 0.10, 1},
	
	white		= {1.00, 1.00, 1.00, 1},
	black		= {0.00, 0.00, 0.00, 1},
	red			= {1.00, 0.00, 0.00, 1},
	blue		= {0.00, 0.00, 1.00, 1},
	green		= {0.00, 1.00, 0.00, 1},
	yellow		= {1.00, 1.00, 0.00, 1},
	purple		= {0.00, 1.00, 1.00, 1},
}

local colorSets	= {}
for name,vals in pairs(colors) do
	colorSets[name]	= {}
	colorSets[name].argb = string.char(math.floor(vals[4]*255),math.floor(vals[1]*255),
										math.floor(vals[2]*255),math.floor(vals[3]*255))
	colorSets[name].rgba = colors[name]
end

return colorSets

look at the .argb part.. I gotta go to work

Posted: **27 Jun 2011, 17:34**

Thanks for the quick reply.
I'm not sure about it though.
The math.floor parts are to make sure the value given is an integer, yes?
If so that's not a problem with my code.
The string.char: doesn't that convert the numbers into their representative symbols? If so I don't see how this would help.
Could you explain a little please?

Posted: **27 Jun 2011, 19:11**

I could not explain as I was leaving for work.

I am in a hurry... Between tasks so..

The math stuff is for converting my 0-1.0 values part...

Important part

Order of colors

ARGB vs RGBA

ARGB for text

Posted: **27 Jun 2011, 19:15**

No \ just numbers

Val="a\r\g\b"
Not (Val)<- this is single string

Is (a,r,g,b) <- several values <- correct way

Posted: **27 Jun 2011, 19:18**

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nameColorizer = string.format("\255\%s\%s\%s", R255, G255, B255)

It is Lua, not C

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nameColorizer = "\255\" .. R255 .. "\" .. G255.. "\" .. B255

Almost, but not quite. Try with:

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nameColorizer="\255"..string.char(R255)..string.char(G255)..string.char(B255)

Just tried and yep, it works that way

\ is an escape character. It means that it does not put the character '\' into the string, but instead \ is used to introduce character that would be hard to type otherwise. \ followed by a number N is the Nth character, or if you prefer, the character that corresponds to the byte value of N. For instance "\065" is "A".

The default behavior of Lua, when you concatenate a string and a number with .. is to transform the number into the string of its decimal representation. So we use string.char(N) to tell Lua we really want the character corresponding to a byte value of N.

smoth wrote:ARGB for text

There is no Alpha for text. The 255 is here to introduce the colors, it is not an alpha value.

Posted: **28 Jun 2011, 10:36**

Ahh thats great. I tried string.char in one attempt but I misunderstood. I knew that it took a number as a key for a particular character, but I didn't consider that that is exactly what "\number" was doing as well.
It seems to be working fine now. Thanks.

Posted: **28 Jun 2011, 13:50**

smoth wrote:I could not explain as I was leaving for work.

I am in a hurry... Between tasks so..

The math stuff is for converting my 0-1.0 values part...

Important part

Order of colors

ARGB vs RGBA

ARGB for text

There is no alpha in inlined colorcodes. The \255 is a special char, nothing else.
Btw there is a colorreset code, too. -> "\255\255\001\001 red \255\001\001\255 blue \b red again" -> red blue red again

so the codes are:
"\255\rrr\ggg\bbb"
&
"\b" equal to "\008"

Spring RTS Engine

Colour in Echo text.

Colour in Echo text.

Re: Colour in Echo text.

Re: Colour in Echo text.

Re: Colour in Echo text.

Re: Colour in Echo text.

Re: Colour in Echo text.

Re: Colour in Echo text.

Re: Colour in Echo text.