UFOpaedia - User contributions [en]

Image Formats (Apocalypse)

2014-07-16T18:38:52Z

Pmprog: Graphic data update

{{tocright}}Image file formats used by [[Apocalypse|X-COM: Apocalypse]].

<br clear=all>
=PCK=
An advancement on the version used by [[Image_Formats#PCK|the previous games]], which can now use a variety of different compression methods on different sprites within the same image archive.

Most images are about 48x64 (the bounds of a single tile), but the format leaves itself open to much larger dimensions (for example, the giant [[Megaspawn]]s aren't split up into multiple "tiles" like the large units in the previous games (such as the [[Cyberdisc]]s) - they nearly double the average sprite dimensions as a result).

As before, the image data indexes into an palette consisting of 256 colours. There is a unique palette stored for every terrain, but they're mostly similar (after all, your units need to look the same regardless of where you send them).

==TAB==
Each PCK file is again accompanied by a TAB file. The TAB file contains a 32bit integer (4 bytes, little endian) per image. This value needs to be multipled by 4 to get the file offset in the PCK of the image header.

==Image Header==
The first twelve bytes of each image in the PCK are a header:

{| class="wikitable"
|-
!Offset<br>(Decimal)
!Offset<br>(Hex)
!Usage
|- valign="top"
!0
!0x00
|Compression mode. If 0, stop reading, there's no image to load and even the header won't be complete.
|- valign="top"
!1-3
!0x01-0x03
|Unknown, usually blank (unless the compression mode is 128).
|- valign="top"
!4-5
!0x04-0x05
|Left-most pixel within the sprite. No data should be rendered further left of this point.
|- valign="top"
!6-7
!0x08-0x09
|Right-most pixel within the sprite. No data should be rendered at this point or further.
|- valign="top"
!8-9
!0x08-0x09
|Top-most pixel within the sprite. No data should be rendered higher above this point.
|- valign="top"
!10-11
!0x0A-0x0B
|Bottom-most pixel within the sprite. No data should be rendered at this point or lower.
|-
|}

Width = Right-Most pixel - Left-ost pixel
Height = Bottom-Most pixel - Top-Most pixel

The image data then proceeds according to the compression mode used by the sprite.

==Compression mode: 0==
No image, don't render anything.

==Compression mode: 1==
[http://en.wikipedia.org/wiki/Run-length_encoding RLE compression], but opaque pixels aren't compressed at all. The concept is fairly similar to that of the old PCK format (though it's been expanded out a bit). Keep reading & rendering records according to this pattern:

{| class="wikitable"
|-
!Offset<br>(Decimal)
!Offset<br>(Hex)
!Usage
|- valign="top"
!0-3
!0x00-0x03
|Amount of pixels to skip from co-ordinate (0, 0). If this is 0xFF FF FF FF, then stop rendering, you've hit the end of the sprite.
You can calculate the Y co-ordinate for your row by taking the integer value of this divided by 640 (rounding down).
To make the Y co-ordinate relative to the individual sprite, you can subtract the "Top-Most pixel" from the header.
|- valign="top"
!4
!0x04
|Quick access to the X co-ordinate (so you don't have to calculate the modulus of the pixels to skip).
To make the X co-ordinate relative to the individual sprite, you can subtract the "Left-Most pixel" from the header.
|- valign="top"
!5
!0x05
|The amount of pixels this record contains.
|- valign="top"
!6
!0x06
|Always 0 (Assuming "Left Padding")
|- valign="top"
!7
!0x07
|Right Padding. This is the number of pixels in the row you don't need to draw.
Pixels To Draw = (Amount Of Pixels) - (Right Padding)
|- valign="top"
!8 ...
!0x08 ...
|From this point, read the amount of pixels specified by index 5 and render then left to right on the display. Palette Index 0 is transparent
|-
|}

==Compression mode: 2==
Uncommon, not entirely certain it's used at all...

==Compression mode: 3==
I guess you could describe this as [http://en.wikipedia.org/wiki/LZ77_and_LZ78 LZ77 compression]. Start out by loading the contents of TacData\XCOM.BLK into RAM - this contains all the actual pixel data used by sprites via this mode. Keep reading & rendering records according to the below pattern.

If a given record starts with 0xFF FF FF FF, then stop rendering, you've hit the end of the sprite.

{| class="wikitable"
|-
!Offset<br>(Decimal)
!Offset<br>(Hex)
!Usage
|- valign="top"
!0
!0x00
|The amount of sub-records to render on this row.
|- valign="top"
!1
!0x01
|Usually, this is 128 minus the amount of pixels drawn by the ''first'' sub-record rendered on the ''previous'' row. I'm not strictly sure what this means or why it's there.
|- valign="top"
!2
!0x02
|''Unknown''
|- valign="top"
!3
!0x03
|The row this record is to be rendered on.
|- valign="top"
!4
!0x04
|Sub-records. Read & render however many index 0 specified, on the current row:
{| class="wikitable"
|-
!Offset<br>(Decimal)
!Offset<br>(Hex)
!Usage
|- valign="top"
!0
!0x00
|Column to start rendering, relative to where the last sub-record finished (or relative to column 0, if this is the first sub-record on the row).
|- valign="top"
!1
!0x01
|Amount of pixels to render.
|- valign="top"
!2-4
!0x02-0x04
|A three byte value that indexes into TacData\XCOM.BLK. Starting from this location, read however many bytes index 1 specified and render them left-to-right on the display.
|-
|}
|-
|}

==Compression mode: 128==
I haven't looked into this one as of yet, but the context this mode is used in suggests it's mainly used for smoke clouds (which'd use lots of transparent pixels).

=PCX=
There are a number of images in PCX format, these are standard and most graphic packages can read them

=MOUSE.DAT=
This file contains 9 images with a resolution of 24 x 24 pixels, using 8bpp with a palette index

[[Category:Game Files]]
[[Category:Apocalypse]]

Template:Apoc Table

2014-07-16T18:11:11Z

Pmprog: Tech data being added

<table style="width:100%;">
<tr style="vertical-align: top;">
<td colspan = "3">
{| {{stdTable}} width = "100%"
|- {{stdTable Heading}}
| colspan = "1"| {{Apoc Icon}} '''X-COM: Apocalypse'''
|-
|}
</td>
<tr style="vertical-align: top">
<td style="width: 33.3%; border:1px gray solid;">
{| {{stdTable}} width="100%" style="border:none;"
|- {{stdApoc Heading}}
|- {{stdTable Sub Heading}}
| '''General'''
|-
| [[Info (Apocalypse)|General Information]]
|-
| [[Background (Apocalypse)|Background]]
|- {{stdTable Sub Heading}} title = "Happenings in Mega-Primus"
| '''Cityscape'''
|-
| [[Cityscape (Apocalypse)|Cityscape]]
|-
| [[Mega-Primus]]
: [[City Maps (Apocalypse)|City Maps]]
: [[Organizations]]
: [[Population_(Apocalypse)| Population]]
: [[Relations (Apocalypse)|Relations]]
: [[Trade (Apocalypse)|Trade]]
: [[Buildings (Apocalypse)|Buildings and Areas]]
|-
| [[Cityscape Fighting (Apocalypse)|Cityscape Fighting]]
: [[UFO Incursions (Apocalypse)|UFO Incursions]]
: [[Alien Ship Combat (Apocalypse)|Alien Ship Combat]]
|-
|- {{stdTable Sub Heading}} title = "Close Quarter Skirmishes"
| '''Battlescape'''
|-
| [[Battlescape Overview (Apocalypse)|Battlescape]]
: [[Mission Types (Apocalypse)|Mission Types]]
: [[Real-Time Combat (Apocalypse)| Real-Time Combat]]
: [[Turn-Based Combat (Apocalypse)| Turn-Based Combat]]
: [[Real-Time vs Turn-Based (Apocalypse)|Real-Time vs Turn-Based Analysis]]
|-
| [[Tactics (Apocalypse)|Tactics]]
: [[Starting a Mission (Apocalypse)|Starting a Mission]]
: [[Controls (Apocalypse)|Agent Automatic Reaction Controls]]
: [[Engaging the Enemy (Apocalypse)|Engaging the Enemy]]
: [[Strategies for Troops (Apocalypse)|Strategies for Troops]]
: [[Base Defense (Apocalypse)|Base Defense]]
: [[Capturing Live Aliens (Apocalypse)|Capturing Live Aliens]]
: [[Psionics (Apocalypse)|Psionics]]
: [[Take Cover!]]
|}
<td style="width: 33.3%; border:1px gray solid;">
{| {{stdTable}} width="100%" style="border:none;"
|- {{stdTable Sub Heading}} title = "All Those Useful Items"
| '''X-COM'''
|-
| [[Bases (Apocalypse)|Bases]]
: [[Base Locations (Apocalypse)|Locations]]
: [[Base Layouts (Apocalypse)|Layouts]]
: [[Facilities (Apocalypse)|Facilities]]
: [[Research (Apocalypse)|Research]]
:: [[Biochemistry]]
:: [[Quantum Physics (Apocalypse)|Quantum Physics]]
: [[Engineering (Apocalypse)|Engineering]]
|-
| [[Agents (Apocalypse)|Agents]]
: [[Agents Stats (Apocalypse)|Agents Stats]]
:: [[Agents Medals (Apocalypse)|Agents Medals]]
: [[Agents Equipment (Apocalypse)|Agents Equipment]]
: [[Agents Armor (Apocalypse)|Agents Armor]]
: [[Suggestions for Equipping Troops (Apocalypse)|Suggestions for Equipping Troops]]
|-
| [[Vehicles (Apocalypse)|Vehicles]]
: [[Vehicle Weapons (Apocalypse)|Vehicle Weapons]]
: [[Vehicle Engines (Apocalypse)|Vehicle Engines]]
: [[Vehicle Equipment (Apocalypse)|Vehicle Equipment]]
|-
|- {{stdTable Sub Heading}} title = "The Interdimensional Aliens"
| '''Aliens'''
|-
| [[Alien Life Forms (Apocalypse)|Alien Life Forms]]
: [[Alien Overview (Apocalypse)| Alien Overview]]
: [[Alien Artifacts (Apocalypse)|Alien Artifacts]]
:: [[Alien Tech Levels (Apocalypse)|Alien Tech Levels]]
: [[Alien Ships (Apocalypse)|Alien Ships]]
: [[Alien Dimension (Apocalypse)| Alien Dimension]]
:: [[Dimension UFO Combat (Apocalypse)|UFO Combat]]
|-
|}
<td style="width: 33.3%; border:1px gray solid;">
{| {{stdTable}} width="100%" style="border:none;"
|- {{stdTable Sub Heading}}
| '''Miscellaneous Information'''
|-
| [[Equipment Analysis (Apocalypse)|Weapon/Equipment Analysis]]
|-
| [[Making the Game Harder (Apocalypse)|Making the Game Harder]]
|-
| [[Sightings in other fandoms]]
|-
| [[Unused Game Features (Apocalypse)|Unused Game Features]]
|- {{stdTable Sub Heading}}
| '''Technical Information'''
|-
| [[Difficulty Levels (Apocalypse)|Difficulty Levels]]
|-
| [[:Category:Data tables|Data Tables]]
: [[Alien Stats (Apocalypse)|Alien Stats]]
: [[Damage Modifiers (Apocalypse) | Damage Modifiers]]
|-
| [[:Category:Game Files|Game Files]]
: [[Audio Formats (Apocalypse)|Audio File Formats]]
: [[Image Formats (Apocalypse)|Image File Formats]]
|-
| [[Input Device Reference (Apocalypse) | Input Device Reference]]
|- {{stdTable Sub Heading}}
| '''Mods, Utilities, Compilations'''
|-
| [[Mods (Apocalypse) | Mods]]
|- {{stdTable Sub Heading}}
| '''Guides'''
|-
| [[User Guides (Apocalypse) | User Guides ]]
: [[NKF's X-COM Apocalypse: Starter's Guide | NKF's Starter Guide]]
: [[AllOutWar's X-Com Apocalypse Guide | AllOutWar's Guide]]
: [[Defending Mega Primus from Evil Space Aliens, a Beginner's Guide|Captain Foo's Beginner Guide]]
|}
</td>
</tr>
</table>

Audio Formats (Apocalypse)

2014-07-16T18:04:12Z

Pmprog: Audio descriptions

{{tocright}}Image file formats used by [[Apocalypse|X-COM: Apocalypse]].

<br clear=all>
=RAW=
All sound effects stored in the RAWSOUND folder have the following format:
<table {{StdCenterTable}}>
<tr {{StdDescTable_Heading}}>
<th align="left" rowspan="2" width="200">Property</th>
<th rowspan="2" width="200">Value</th>
</tr>
<tr {{StdDescTable_Heading}}>
<tr><td align="left">Channels</td><td>1 (Mono)</td></tr>
<tr><td align="left">Format</td><td>Unsigned 8bit PCM</td></tr>
<tr><td align="left">Sample Rate</td><td>22,050Hz</td></tr>
</table>

=MUSIC=
The MUSIC file (found on the CD) has the following format:
<table {{StdCenterTable}}>
<tr {{StdDescTable_Heading}}>
<th align="left" rowspan="2" width="200">Property</th>
<th rowspan="2" width="200">Value</th>
</tr>
<tr {{StdDescTable_Heading}}>
<tr><td align="left">Channels</td><td>2 (Stereo)</td></tr>
<tr><td align="left">Format</td><td>Signed 16bit PCM</td></tr>
<tr><td align="left">Endian</td><td>Little Endian</td></tr>
<tr><td align="left">Sample Rate</td><td>22,050Hz</td></tr>
</table>

[[Category:Game Files]]
[[Category:Apocalypse]]