Outpost 2 file format · bei.pm

Outpost 2 iusim data format i olsem JFIF / PNG - ol data blok i gat 8 Byte header. Olsem na mi no save raitim ol header long spesifik ples, mi raitim tasol ol difrens.

Format i olsem; ol gutpela data i stap insait:

Volumes em wan data container bilong game, olsem wan archive format olsem Tarball. Olsem na, long Outpost 2, format i save long ol files tasol - nogat ol folders. Ol i save likim ol dispela long ol file nem.

Wan volume i kam long volume-header na ol several volume blocks, we i bilong ol spesifik files.

"Volumes" em ol files we i gat end olsem 'vol' long game directory.

Volume Header no gat nogat data bilong yus.
Em i olsem container tasol.

Numba wan data long Volume Header em i mas gat Volume Strings; bihain long dispela i kamap Volume-information.

Volume Strings iwanua na lista bilong ol file nem, we i stap long volume.

Volume information i gat moa detel inforamshon long di files. Dis i olsem wan kain FAT directory entry (FAT = File Allocation Table)

Di namba blong files i kam long block size divaidim long di length blong directory entries - 14 Byte.

Di evri directory entries i gat di following structure:

Volume-Block emi wan container, hem kisim ol faile. Hem i gat wanpela moa - bikpela bilong block format - redundant de faile size na na em i go stret long ol user data.

Ol tiles em iwanan Outpost-2 spesifik Bitmap grafiks format. Ol i go long 13 tilesets, "wells" em i kolim (well0000.bmp go long well0012.bmp), wea ol i stap insait long volyum maps.vol.

Ol tilesets / wells i gat dispela:

Em i gutpela samting long mekim stret, no renderim Tiles bipo long wanem, long lukim ol i save cache, bikos ol data bilong de/nait saik i mas wokim yet - na plenti tru ol data bai kamap.

Ol Tiles i 8bpp piksa bilong indexed palette, long 32x32 piksel resolusen, na ol i stap wantaim. Long wanpela olsem Tileset, i gat planti moa.

The main container i gat 2 sekshen: head na data.

Ol man bilong dispela, wanpela paleti faile i stap long RIFF format. Ol samting i gat long dispela i lukim - sapos ol paleti i kamap long narapela ples - long Paleti.

Na iua, na piksel data i go i soso, i kam long left-top na i go long right-bottom.
Na data value long ol piksel we i mas i olsem 8bpp-bitmaps i kam long index bilong kolok long kolok palate.

Dispela play-engine i nogat ol tiles *liklik* long taem yu laikim.
Dispela i luk olsem i gat bikpela rison long dei-nait sikil, we i gat 32 narakain ol tiles. Olsem na, i luk olsem ol brighness value i no moa likim. I no yet inap long kisim ol stret value, mi wok long ol calculation

v *= (daylight / 48) + 0.25;

wanem i gat long ol HSV data bilong ol pixel, we daylight i gat value bilong 0-31 na v i gat value bilong 0-1. Sapos yu lukim, i gat wanpela rand long map, we i gat 16 tiles long left na right (dispela i helpim long no lukim unit i spawn).

Mo yet, i luk olsem dei-nait sikil i resem wanpela kolim bilong map long olgeta gamecycle.
Wanem i kirap long faster dei-nait sikil em i luk olsem:

Olsem wanem PRT i mean, mi no save; wanem samting olsem 'Palette and Ressource Table' - bikos dispela fael - yu ken lukim olsem op2_art.prt long maps.vol - em i olsem, o dispela i gutpela tokim ol wok bilong en.

Dispela fael i gat wanpela liste bilong paletten, wanpela tebel long olgeta bitmap we i yusim, olgeta definisen bilong animasiyon, na moa yet planti samting we mi no save. Em i no stret long container format we i bin stap bipo, bikos no olgeta data i kam long dispela skema.

CPAL sekshen (i likim olsem paletten-container) i soim tasol paletten data, na i tokim hao planti 8-bit paletten i gat 1052 byte i stap.

Dispela 1052-byte tok i no olsem raitim, bikos paletten format i ken gat plante narapela paletten size. Em i soim tasol long data we Outpost 2 i kam wantaim.

Afte paletten liste, i kam nau olgeta bitmap liste; na klostu i kam yet animasiyon liste.
Both i stat long wanpela uint(32) (o gen uint24 + uint8 flags?) we i soim namba bilong data.

Ol palete infromesen i isi long raitim.
Em i gat wan header na wan data-segment.

Das sekson bilong data i kisim olgeta palet entri. Ol namba bilong palet entri i kam long blok leng / 4.

Olgeta entri i gat dispela, simpul straktua;

Ol i paleti, ol i no moa tokim, na long ol paleti bilong animason, ol dispela ruls i wok long:

• Ol fasa bilong nambawan i BAMU transparen, nogat wanem val i stap long dispela.
• Ol paleti entri 1-24 i mas lukim olsem ol kol bilong pleya long paleti 1-8.
  Ol kol i kam long ol pleya 1 i no klia long mi.
  Mi ting, ol narapela kol i hardcoded.

Dis data structure bilong PRT file i tokim olsem wanem bitmaps we i yusim bilong sprites i stap. Dis bitmaps i wok olsem wanpela komponen, we planti i join wantaim long wanpela animasyon frame bilong sprite.

Ol konkretn data bilong piksa i stap long op2_art.BMP long game directory.
Olsem wanem dispela bitmap file i gat wan (we i mostly stret) RIFF-bitmap header, i no klia. Liklik liklik, Outpost 2 i yusim system-APIs long load grafik, bai dispela header i tekim temparari na ol samting i save, i go long dispela samting i no same.

Ol pixel data i stap long BMP file long Position Offset + uint32-Offset, we i stap long BMP file long address 0x000A (RIFF-bitmap-data offset), i save long - na ol i yet i go long lain bilong ol piksa, i stat long hap up i go long hap daun.

Monochrome 1bpp grafik i ken soim olsem wanem, we kala 0 i wanpela transparensi, na kala 1 i wanpela halftam black/grey, olsem monochrome grafik i kasem olgeta long vehicle na building shadow long animasyon.

Olsem na yu ken wokim planti grafik wantaim.

Na, yumi kamap long king klas bilong displin insait long Outpost 2 data format:
Ani mas.

Ani mas list i stat wantaim wanpela global header, we i wok long veri data. Olsem na, i kamap ol konkreti ani mas definision, we i split long 3 step:

1. Ani mas
   Wanpela ani mas em i hap bilong antap; em i soim ani mas bilong wanpela unit, wanpela bilding o wanpela 'partikel-ani mas' (komet hit, weatha, eksploson) long wanpela spesifik ples.
2. Frame
   Wanpela frame em i wanpela piksa insait long wanpela ani mas. Wanpela ani mas i ken gat wan o plenti frame.
3. Subframe
   Wanpela subframe em i informasion long ol samting we wanpela bitmap i mas painim olsem ol kriteriya i kam long wanpela spesifik ples bilong wanpela frame. Wanpela frame i ken gat wan o plenti subframe.

Na, ol ani mas definision i kamap klostu.

Dei data bilong hap bikpela, bilong animetion, em i olsem ol data bilong administrasion - Boundingbox em i makim ol koordinet bilong mak bilong vehikel/ohaus, samting em i pilai na i tokim tu, wanem hap em i ken kliki.

Offset em i makim "nullpoint"; dispela point, em i mas i go long ol internal koordinet bilong plei o i mas i rausim. Yu ken tok matematik: offset em i makim hap koordinet bilong stat.

Ol Windows em i olsem, olsem offset, i gat 4 uint(32) values long wanpela Windows, em i makim wanpela hap we i ken yusim long ol subframes. Long outsait bilong Windows, samting em i no olsem bitmap, i no ken draim.

Nau, mipela inap nau putim wan wan frame, na tupla animetion olsem, mi laik soim long wan bikpela animetion, animetion wantaim index 500, bilong soim.

Animation 500 emonisi, olsem wanem wanpela Plymouth-transporta, wanem i karim ol narakain ore, i ken raus. Dispela em i wanpela long ol feisal anima we i yusim windowing-funktionalit.

Na olsem wanem yumi ken putim olgeta anima i go wanpela.
Sori, i gat wanpela problem yet wantaim long apinun lida, bikos long dispela hap, bit i no setim long grafik type infomesen.

Here i gat sampela moa, bel isi animet sprite long dispela game:

Na, em i no gat wan User-Interface bilong dispela game, we i stap long brushed metal luk.

Na tu, em i klia olsem Dynamix i no nidim long mekim nupela roud; dispela i no luksave long ol simpli we ol i yusim ol User32 na GDI32-APIs we i kam long Windows - ol i yusim tu ol resources management bilong User32.

Ol i ken kisim ol samting olsem long program olsem we Angus Johnson i mekim free software, Resource Hacker, o sapos yu no laik yusim Wine long Linux / Mac OS, yu ken yusim wrestool we i stap long icoutils long kisim ol.