D3TV
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! Size (in bytes) | ! Size (in bytes) | ||
|- | |- | ||
| − | | 0x00 || Chunk identifier (<code> | + | | 0x00 || Chunk identifier (<code>BPNT</code>) || 4 |
|- | |- | ||
| 0x04 || Chunk size (minimum of <code>0C</code>, goes up by 4 for each point) || 4 | | 0x04 || Chunk size (minimum of <code>0C</code>, goes up by 4 for each point) || 4 | ||
| Line 90: | Line 90: | ||
=== EVNT === | === EVNT === | ||
| − | + | This chunk seems to related an avenue to either a button press or time elapsing. Usually followed by an AVNE and sometimes a BPNT. | |
| + | |||
| + | {| class="wikitable" | ||
| + | ! Offset | ||
| + | ! Data | ||
| + | ! Size (in bytes) | ||
| + | |- | ||
| + | | 0x00 || Chunk identifier (<code>EVNT</code>) || 4 | ||
| + | |- | ||
| + | | 0x04 || Chunk size (always <code>2C</code>) || 4 | ||
| + | |- | ||
| + | | 0x15 || Timer length (?) || 1 | ||
| + | |- | ||
| + | |} | ||
=== GRPH === | === GRPH === | ||
| Line 104: | Line 117: | ||
| 0x04 || Chunk size (always <code>9C</code>) || 4 | | 0x04 || Chunk size (always <code>9C</code>) || 4 | ||
|- | |- | ||
| − | | 0x08 || Graphic path || unknown | + | | 0x08 || Graphic path (null-terminated string) || unknown |
|- | |- | ||
| + | | 0x8E || Frames || 2 | ||
|} | |} | ||
Latest revision as of 05:21, 17 October 2020
D3TV files are game data files used by the v3.x of the D.U.N.E (Developers Universal Non-programming Environment) Engine, which added support for CD Audio with the Commodore CDTV. These files usually correspond to individual "shots" in a DUNE game, and are based on the IFF metaformat.
Contents |
[edit] Identification
D3TV files begin with FORM, have the file-size in bytes starting at offset 4, and have a type indicator of D3TV at offset 8.
[edit] Chunks
These files contain many different chunks for different types of game data. All offsets mentioned are relative to the start of the chunk identifier.
[edit] AFRM
The purpose of this chunk is currently unknown.
[edit] AVNE
This chunk contains information about "avenues", which are links to other shots.
| Offset | Data | Size (in bytes) |
|---|---|---|
| 0x00 | Chunk identifier (AVNE) |
4 |
| 0x04 | Chunk size (always 30) |
4 |
| 0x08 | Shot path | unknown |
[edit] BPNT
This chunk contains information about where a button is, and is followed by the connected AVNE chunk. Point fields are repeated for each point in the button.
| Offset | Data | Size (in bytes) |
|---|---|---|
| 0x00 | Chunk identifier (BPNT) |
4 |
| 0x04 | Chunk size (minimum of 0C, goes up by 4 for each point) |
4 |
| 0x08 | Point X | 2 |
| 0x0A | Point Y | 2 |
[edit] CAUD
This chunk sets the audio sample or module to be played when entering a shot, or when activating a button.
| Offset | Data | Size (in bytes) |
|---|---|---|
| 0x00 | Chunk identifier (CAUD) |
4 |
| 0x04 | Chunk size (always 30) |
4 |
| 0x08 | Audio path | unknown |
[edit] CDTV
This chunk refers to CD Audio that is played immediately when a shot is entered.
| Offset | Data | Size (in bytes) |
|---|---|---|
| 0x00 | Chunk identifier (CDTV) |
4 |
| 0x04 | Chunk size (always 1C) |
4 |
| 0x09 | CD Track | 1 |
| 0x0D | Start point minutes | 1 |
| 0x0E | Start point seconds | 1 |
| 0x0F | Start point CDDA frames | 1 |
| 0x11 | End point minutes | 1 |
| 0x12 | End point seconds | 1 |
| 0x13 | End point CDDA frames | 1 |
[edit] EVNT
This chunk seems to related an avenue to either a button press or time elapsing. Usually followed by an AVNE and sometimes a BPNT.
| Offset | Data | Size (in bytes) |
|---|---|---|
| 0x00 | Chunk identifier (EVNT) |
4 |
| 0x04 | Chunk size (always 2C) |
4 |
| 0x15 | Timer length (?) | 1 |
[edit] GRPH
This chunk gets the image or animation for the shot, and sets some extra details about it.
| Offset | Data | Size (in bytes) |
|---|---|---|
| 0x00 | Chunk identifier (GRPH) |
4 |
| 0x04 | Chunk size (always 9C) |
4 |
| 0x08 | Graphic path (null-terminated string) | unknown |
| 0x8E | Frames | 2 |
