[OTTD] GRFCodec claims NFO file missing header

[Cryolaser]

I'm trying to follow these instructions: https://www.tt-wiki.net/wiki/NFO_Foundations
But at the point where it comes to encoding the file with the command "grfcodec -e mytrain.grf" in step 4, GRFCodec tells me "NFO file missing header and version info", but I've added the // lines so it's not clear how to proceed.

Here's my code so far... I've tried this with the header they show, as well as the following variations from the base graphics NFO in my installation.

Code: Select all

// Automatically generated by GRFCODEC. Do not modify!
// (Info version 6)
// Format: spritenum pcxfile xpos ypos compression ysize xsize xrel yrel
 0 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  466 11656    8   21   -3  -11 normal
 1 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  482 11656   20   14  -14   -7 normal
 2 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  514 11656   29   12  -16   -8 normal
 3 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  562 11656   20   14   -6   -7 normal
 4 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  594 11656    8   20   -3  -10 normal
 5 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  610 11656   20   14  -14   -7 normal
 6 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  642 11656   29   12  -16   -8 normal
 7 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  690 11656   20   14   -6   -7 normal

Variations of header tried, producing same error:

Code: Select all

// Automatically generated by GRFCODEC. Do not modify!
// (Info version 32)
// Format: spritenum imagefile depth xpos ypos xsize ysize xrel yrel zoom flags

Code: Select all

// Automatically generated by GRFCODEC. Do not modify!
// (Info version 32)
// Escapes: 2+ 2- 2< 2> 2u< 2u> 2/ 2% 2u/ 2u% 2* 2& 2| 2^ 2sto = 2s 2rst = 2r 2psto 2ror = 2rot 2cmp 2ucmp 2<< 2u>> 2>>
// Escapes: 71 70 7= 7! 7< 7> 7G 7g 7gG 7GG 7gg 7c 7C
// Escapes: D= = DR D+ = DF D- = DC Du* = DM D* = DnF Du<< = DnC D<< = DO D& D| Du/ D/ Du% D%
// Format: spritenum imagefile depth xpos ypos xsize ysize xrel yrel zoom flags

[PikkaBird]

For a NewGRF, you also need a sprite 0 - which just tells it how many sprites there are altogether - and an action 8 before you jump in to writing useful code. Here's something vague I wrote a long time ago.

[Cryolaser]

According to your link, NFORenum will add a sprite 0 for me. NFOrenum however says "Does not appear to be an NFO file. Skipping file." when I try to process what I have. I've tried adding an Action8 line using your example, to the same response from the executable.

Code: Select all

// Automatically generated by GRFCODEC. Do not modify!
// (Info version 32)
// Format: spritenum imagefile depth xpos ypos xsize ysize xrel yrel zoom flags
 0 * 1	 08 07 "JB01" "My first Newgrf" 00 "By Joe Bloggs" 00
 1 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  466 11656    8   21   -3  -11 normal
 2 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  482 11656   20   14  -14   -7 normal
 3 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  514 11656   29   12  -16   -8 normal
 4 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  562 11656   20   14   -6   -7 normal
 5 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  594 11656    8   20   -3  -10 normal
 6 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  610 11656   20   14  -14   -7 normal
 7 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  642 11656   29   12  -16   -8 normal
 8 c:\program files\openttd\sprites/ogfx1_base00.png  8bpp  690 11656   20   14   -6   -7 normal

[PikkaBird]

Here's a minimally working nfo file. If you're more familiar with actual programming languages, you could also give NML a try - it's what most people use these days.

Code: Select all

// Automatically generated by GRFCODEC. Do not modify!
// (Info version 32)
// Escapes: 2+ 2- 2< 2> 2u< 2u> 2/ 2% 2u/ 2u% 2* 2& 2| 2^ 2sto = 2s 2rst = 2r 2psto 2ror = 2rot 2cmp 2ucmp 2<< 2u>> 2>>
// Escapes: 71 70 7= 7! 7< 7> 7G 7g 7gG 7GG 7gg 7c 7C
// Escapes: D= = DR D+ = DF D- = DC Du* = DM D* = DnF Du<< = DnC D<< = DO D& D| Du/ D/ Du% D%
// Format: spritenum imagefile depth xpos ypos xsize ysize xrel yrel zoom flags
    0 * 4	 07 00 00 00

// INFO DATA CHUNKS

    1 * 19	 14 "C" "INFO"
                  "B" "VRSN" \w4 \d0
              00
    00
    2 * 19	 14 "C" "INFO"
                  "B" "MINV" \w4 \d0
              00
    00

    3 * 16	 14 "C" "INFO"
                  "B" "PALS" \w1 "A"
              00
    00

    4 * 16	 14 "C" "INFO"
                  "B" "BLTR" \w1 "3"
              00
    00

    5 * 67	 14 "C" "INFO"
                 "T" "URL_" 7f "https://www.tt-forums.net/viewtopic.php?f=26&t=84786" 00
                 00
             00	

    6 * 17	 14 "C" "INFO"
                "B" "NPAR" \w1 \b0
				00

         00
	00	

    7 * 16	 08 08 "IDID" "Name" 00 "Desc" 00


//Something goes here.

[wallyweb]

...

GRFCodec is distributed with a lintner called nforenum.

Try running nforenum -c / mytrain.nfo
Then view mytrain.nfo in your text editor.
Note: The -c / allows you to insert comments after //
You should see the header as it appears in PikkaBird's sample.

If all looks good then run grfcodec -e mytrain.grf

[Cryolaser]

Been a while but I want to thank y'all, it's most gracious of you. I don't have any experience of coding, but I only want to make a few locomotives, so the template is immensely helpful.

[planetmaker]

You might want to have a look at the tutorials over at tt-wiki: https://www.tt-wiki.net/wiki/NMLTutorial

[kamnet]

Been a while but I want to thank y'all, it's most gracious of you. I don't have any experience of coding, but I only want to make a few locomotives, so the template is immensely helpful.

Congratulations! You're now a coder! We look forward to your contributions.

[Eddi]

i'd expect the problem is that your editor adds an invisible "UTF8-BOM" and grfcodec gets confused on that. to a human the file LOOKS correct, but the compiler bails on the unrecognized character.