Trackdata - Revision history

Duplode: /* Trackdata data structures */

2021-02-23T03:52:26Z

Trackdata data structures

← Older revision		Revision as of 05:52, 23 February 2021
Line 25:		Line 25:
	\|\| '''06''' \|\| 161e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''06''' \|\| 161e \|\| 80 \|\| 128 \|\| \|\| \|\|
	\|-		\|-
	\|\| '''07''' \|\| 169e \|\| 80 \|\| 128 \|\| 64 words \|\| \|\| ~~Possibly a height modifier for camera positions~~		\|\| '''07''' \|\| 169e \|\| 80 \|\| 128 \|\| 64 words \|\| \|\|
	\|-		\|-
	\|\| '''08''' \|\| 171e \|\| 60 \|\| 96 \|\| 48 words? \|\| \|\|		\|\| '''08''' \|\| 171e \|\| 60 \|\| 96 \|\| 48 words? \|\| \|\|

Duplode at 03:51, 23 February 2021

2021-02-23T03:51:49Z

← Older revision		Revision as of 05:51, 23 February 2021
Line 1:		Line 1:
	'''Trackdata''' is a set of twenty three data structures which hold key information about the track in use and the lap being driven or replayed on it. Each of the individual data structures is referred to as ''trackdataXX'', with ''XX'' being a two-digit number. The current systematisation of Trackdata is chiefly based on the results of the [[restunts]] ~~projects~~, though parts of it have been independently discovered and rediscovered over the years.		'''Trackdata''' is a set of twenty three data structures which hold key information about the track in use and the lap being driven or replayed on it. Each of the individual data structures is referred to as ''trackdataXX'', with ''XX'' being a two-digit number. The current systematisation of Trackdata is chiefly based on the results of the [[restunts]] project, though parts of it have been independently discovered and rediscovered over the years.

	== Finding Trackdata in memory ==		== Finding Trackdata in memory ==

Duplode: /* Trackdata data structures */

2021-02-22T23:41:36Z

Trackdata data structures

← Older revision		Revision as of 01:41, 23 February 2021
Line 19:		Line 19:
	\|\| '''03''' \|\| e14 \|\| 70a \|\| 1802 \|\| 901 words \|\| Opponent path: sequence of elements to be driven by the opponent. Starts from 0x0, the start/finish line. \|\| Occasionally changes upon restarting a race or reloading a replay.		\|\| '''03''' \|\| e14 \|\| 70a \|\| 1802 \|\| 901 words \|\| Opponent path: sequence of elements to be driven by the opponent. Starts from 0x0, the start/finish line. \|\| Occasionally changes upon restarting a race or reloading a replay.
	\|-		\|-
	\|\| '''04''' \|\| 151e \|\| 80 \|\| 128 \|\| 64 words \|\| Player aero table: aerodynamic resistance lookup table. Indexed by ~~raw_speed~~ >> 2. \|\|		\|\| '''04''' \|\| 151e \|\| 80 \|\| 128 \|\| 64 words \|\| Player aero table: aerodynamic resistance lookup table. Indexed by speed_mph >> 2. \|\|
	\|-		\|-
	\|\| '''05''' \|\| 159e \|\| 80 \|\| 128 \|\| 64 words \|\| Opponent aero table: aerodynamic resistance lookup table. Indexed by ~~raw_speed~~ >> 2. \|\|		\|\| '''05''' \|\| 159e \|\| 80 \|\| 128 \|\| 64 words \|\| Opponent aero table: aerodynamic resistance lookup table. Indexed by speed_mph >> 2. \|\|
	\|-		\|-
	\|\| '''06''' \|\| 161e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''06''' \|\| 161e \|\| 80 \|\| 128 \|\| \|\| \|\|

Duplode: /* Trackdata data structures */ completing the table with reasonably certain information

2021-02-22T04:19:40Z

Trackdata data structures: completing the table with reasonably certain information

← Older revision		Revision as of 06:19, 22 February 2021
Line 8:		Line 8:

	Offsets and byte sizes assume the 1991 DOS [[Game versions\|versions]] of Stunts.		Offsets and byte sizes assume the 1991 DOS [[Game versions\|versions]] of Stunts.

	{\| class="wikitable"		{\| class="wikitable"
	\|-		\|-
	!\| # !! Offset (hex) !! Size (hex) !! Size !! Layout !! Description !! Notes		!\| # !! Offset (hex) !! Size (hex) !! Size !! Layout !! Description !! Notes
	\|-		\|-
	\|\| '''01''' \|\| 0 \|\| 70a \|\| 1802 \|\| \|\| \|\|		\|\| '''01''' \|\| 0 \|\| 70a \|\| 1802 \|\| 901 words \|\| Track continuity: each value is the index of the next element in driving order. Alternative dual-way paths show up after the main one. \|\| The 901-value sizes of the driving-order structures is reflected by the "too many track pieces" validation error.
	\|-		\|-
	\|\| '''02''' \|\| 70a \|\| 70a \|\| 1802 \|\| \|\| \|\|		\|\| '''02''' \|\| 70a \|\| 70a \|\| 1802 \|\| 901 words \|\| Split points: for dual-way splits, the value is the index of the first element of the alternative path, in driving order. \|\|
	\|-		\|-
	\|\| '''03''' \|\| e14 \|\| 70a \|\| 1802 \|\| \|\| \|\|		\|\| '''03''' \|\| e14 \|\| 70a \|\| 1802 \|\| 901 words \|\| Opponent path: sequence of elements to be driven by the opponent. Starts from 0x0, the start/finish line. \|\| Occasionally changes upon restarting a race or reloading a replay.
	\|-		\|-
	\|\| '''04''' \|\| 151e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''04''' \|\| 151e \|\| 80 \|\| 128 \|\| 64 words \|\| Player aero table: aerodynamic resistance lookup table. Indexed by raw_speed >> 2. \|\|
	\|-		\|-
	\|\| '''05''' \|\| 159e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''05''' \|\| 159e \|\| 80 \|\| 128 \|\| 64 words \|\| Opponent aero table: aerodynamic resistance lookup table. Indexed by raw_speed >> 2. \|\|
	\|-		\|-
	\|\| '''06''' \|\| 161e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''06''' \|\| 161e \|\| 80 \|\| 128 \|\| \|\| \|\|
	\|-		\|-
	\|\| '''07''' \|\| 169e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''07''' \|\| 169e \|\| 80 \|\| 128 \|\| 64 words \|\| \|\| Possibly a height modifier for camera positions
	\|-		\|-
	\|\| '''08''' \|\| 171e \|\| 60 \|\| 96 \|\| \|\| \|\|		\|\| '''08''' \|\| 171e \|\| 60 \|\| 96 \|\| 48 words? \|\| \|\|
	\|-		\|-
	\|\| '''09''' \|\| 18fe \|\| 180 \|\| 384 \|\| \|\| \|\|		\|\| '''09''' \|\| 18fe \|\| 180 \|\| 384 \|\| 64 3D word vectors \|\| F4 camera positions. Absolute coordinates, graphical units. \|\|
	\|-		\|-
	\|\| '''10''' \|\| 1a1e \|\| 120 \|\| 288 \|\| \|\| \|\|		\|\| '''10''' \|\| 1a1e \|\| 120 \|\| 288 \|\| 48 3D word vectors \|\| Corner sign positions. Absolute coordinates, graphical units. \|\|
	\|-		\|-
	\|\| '''11''' \|\| 1b8a \|\| 16c \|\| 364 \|\| \|\| \|\|		\|\| '''11''' \|\| 1b8a \|\| 16c \|\| 364 \|\| [[Highscore File Format]] \|\| Highscore table. \|\|
	\|-		\|-
	\|\| '''12''' \|\| 1c7a \|\| f0 \|\| 240 \|\| \|\| \|\|		\|\| '''12''' \|\| 1c7a \|\| f0 \|\| 240 \|\| \|\| \|\|
	\|-		\|-
	\|\| '''13''' \|\| 1c9a \|\| 1a \|\| 26 \|\| \|\| \|\|		\|\| '''13''' \|\| 1c9a \|\| 1a \|\| 26 \|\| [[Replay File Format]] \|\| Replay header. \|\|
	\|-		\|-
	\|\| '''14''' \|\| 2019 \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''14''' \|\| 2019 \|\| 385 \|\| 901 \|\| [[Track File Format]] \|\| Track file element map, plus the scenery byte \|\| Appears to control only the graphical rendering, and not the physical model.
	\|-		\|-
	\|\| '''15''' \|\| 239e \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''15''' \|\| 239e \|\| 385 \|\| 901 \|\| [[Track File Format]] \|\| Track file terrain map, plus the padding byte \|\|
	\|-		\|-
	\|\| '''16''' \|\| 527e \|\| 2ee0 \|\| 12000 \|\| \|\| \|\|		\|\| '''16''' \|\| 527e \|\| 2ee0 \|\| 12000 \|\| [[Replay File Format]] \|\| Replay input buffer. \|\| This is the safe memory area used by [[Bliss]] track metadata.
	\|-		\|-
	\|\| '''17''' \|\| 5603 \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''17''' \|\| 5603 \|\| 385 \|\| 901 \|\| 901 bytes \|\| Track elements, in driving order \|\|
	\|-		\|-
	\|\| '''18''' \|\| 5988 \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''18''' \|\| 5988 \|\| 385 \|\| 901 \|\| 901 bytes \|\| \|\| Likely related to element connectivity checks. The values appear to be structured as bit flags.
	\|-		\|-
	\|\| '''19''' \|\| 5d0d \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''19''' \|\| 5d0d \|\| 385 \|\| 901 \|\| Track file-like map \|\| Indices for trackdata10 (corner signs). \|\|
	\|-		\|-
	\|\| '''20''' \|\| 64b9 \|\| 7ac \|\| 1964 \|\| \|\| \|\|		\|\| '''20''' \|\| 64b9 \|\| 7ac \|\| 1964 \|\| \|\| \|\| The first 1802 bytes are a copy of the track file.
	\|-		\|-
	\|\| '''21''' \|\| 683e \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''21''' \|\| 683e \|\| 385 \|\| 901 \|\| 901 bytes \|\| Grid column of track elements, in driving order \|\|
	\|-		\|-
	\|\| '''22''' \|\| 6bc3 \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''22''' \|\| 6bc3 \|\| 385 \|\| 901 \|\| 901 bytes \|\| Grid row of track elements, in driving order \|\|
	\|-		\|-
	\|\| '''23''' \|\| 6bf3 \|\| 30 \|\| 48 \|\| \|\| \|\|		\|\| '''23''' \|\| 6bf3 \|\| 30 \|\| 48 \|\| 48 bytes? \|\| \|\|
	\|-		\|-
	\|}		\|}

Duplode: /* Trackdata data structures */ basic table layout

2021-02-22T00:42:35Z

Trackdata data structures: basic table layout

← Older revision		Revision as of 02:42, 22 February 2021
Line 8:		Line 8:

	Offsets and byte sizes assume the 1991 DOS [[Game versions\|versions]] of Stunts.		Offsets and byte sizes assume the 1991 DOS [[Game versions\|versions]] of Stunts.

	{\| class="wikitable"		{\| class="wikitable"
	\|-		\|-
	!\| # !! Offset (hex) !! Size (hex) !! Size !! Layout !! Description !! Notes		!\| # !! Offset (hex) !! Size (hex) !! Size !! Layout !! Description !! Notes
	\|		\|-
	\|\| 01 \|\| 0 \|\| 70a \|\| 1802 \|\| \|\| \|\|		\|\| '''01''' \|\| 0 \|\| 70a \|\| 1802 \|\| \|\| \|\|
	\|		\|-
	\|\| 02 \|\| 70a \|\| 70a \|\| 1802 \|\| \|\| \|\|		\|\| '''02''' \|\| 70a \|\| 70a \|\| 1802 \|\| \|\| \|\|
	\|		\|-
	\|\| 03 \|\| e14 \|\| 70a \|\| 1802 \|\| \|\| \|\|		\|\| '''03''' \|\| e14 \|\| 70a \|\| 1802 \|\| \|\| \|\|
	\|		\|-
	\|\| 04 \|\| 151e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''04''' \|\| 151e \|\| 80 \|\| 128 \|\| \|\| \|\|
	\|		\|-
	\|\| 05 \|\| 159e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''05''' \|\| 159e \|\| 80 \|\| 128 \|\| \|\| \|\|
	\|		\|-
	\|\| 06 \|\| 161e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''06''' \|\| 161e \|\| 80 \|\| 128 \|\| \|\| \|\|
	\|		\|-
	\|\| 07 \|\| 169e \|\| 80 \|\| 128 \|\| \|\| \|\|		\|\| '''07''' \|\| 169e \|\| 80 \|\| 128 \|\| \|\| \|\|
	\|		\|-
	\|\| 08 \|\| 171e \|\| 60 \|\| 96 \|\| \|\| \|\|		\|\| '''08''' \|\| 171e \|\| 60 \|\| 96 \|\| \|\| \|\|
	\|		\|-
	\|\| 09 \|\| 18fe \|\| 180 \|\| 384 \|\| \|\| \|\|		\|\| '''09''' \|\| 18fe \|\| 180 \|\| 384 \|\| \|\| \|\|
	\|		\|-
	\|\| 10 \|\| 1a1e \|\| 120 \|\| 288 \|\| \|\| \|\|		\|\| '''10''' \|\| 1a1e \|\| 120 \|\| 288 \|\| \|\| \|\|
	\|		\|-
	\|\| 11 \|\| 1b8a \|\| 16c \|\| 364 \|\| \|\| \|\|		\|\| '''11''' \|\| 1b8a \|\| 16c \|\| 364 \|\| \|\| \|\|
	\|		\|-
	\|\| 12 \|\| 1c7a \|\| f0 \|\| 240 \|\| \|\| \|\|		\|\| '''12''' \|\| 1c7a \|\| f0 \|\| 240 \|\| \|\| \|\|
	\|		\|-
	\|\| 13 \|\| 1c9a \|\| 1a \|\| 26 \|\| \|\| \|\|		\|\| '''13''' \|\| 1c9a \|\| 1a \|\| 26 \|\| \|\| \|\|
	\|		\|-
	\|\| 14 \|\| 2019 \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''14''' \|\| 2019 \|\| 385 \|\| 901 \|\| \|\| \|\|
	\|		\|-
	\|\| 15 \|\| 239e \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''15''' \|\| 239e \|\| 385 \|\| 901 \|\| \|\| \|\|
	\|		\|-
	\|\| 16 \|\| 527e \|\| 2ee0 \|\| 12000 \|\| \|\| \|\|		\|\| '''16''' \|\| 527e \|\| 2ee0 \|\| 12000 \|\| \|\| \|\|
	\|		\|-
	\|\| 17 \|\| 5603 \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''17''' \|\| 5603 \|\| 385 \|\| 901 \|\| \|\| \|\|
	\|		\|-
	\|\| 18 \|\| 5988 \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''18''' \|\| 5988 \|\| 385 \|\| 901 \|\| \|\| \|\|
	\|		\|-
	\|\| 19 \|\| 5d0d \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''19''' \|\| 5d0d \|\| 385 \|\| 901 \|\| \|\| \|\|
	\|		\|-
	\|\| 20 \|\| 64b9 \|\| 7ac \|\| 1964 \|\| \|\| \|\|		\|\| '''20''' \|\| 64b9 \|\| 7ac \|\| 1964 \|\| \|\| \|\|
	\|		\|-
	\|\| 21 \|\| 683e \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''21''' \|\| 683e \|\| 385 \|\| 901 \|\| \|\| \|\|
	\|		\|-
	\|\| 22 \|\| 6bc3 \|\| 385 \|\| 901 \|\| \|\| \|\|		\|\| '''22''' \|\| 6bc3 \|\| 385 \|\| 901 \|\| \|\| \|\|
	\|		\|-
	\|\| 23 \|\| 6bf3 \|\| 30 \|\| 48 \|\| \|\| \|\|		\|\| '''23''' \|\| 6bf3 \|\| 30 \|\| 48 \|\| \|\| \|\|
	\|-		\|-
	\|}		\|}

Duplode: Created page with "'''Trackdata''' is a set of twenty three data structures which hold key information about the track in use and the lap being driven or replayed on it. Each of the individual d..."

2021-02-22T00:36:43Z

Created page with "'''Trackdata''' is a set of twenty three data structures which hold key information about the track in use and the lap being driven or replayed on it. Each of the individual d..."

New page

'''Trackdata''' is a set of twenty three data structures which hold key information about the track in use and the lap being driven or replayed on it. Each of the individual data structures is referred to as ''trackdataXX'', with ''XX'' being a two-digit number. The current systematisation of Trackdata is chiefly based on the results of the [[restunts]] projects, though parts of it have been independently discovered and rediscovered over the years.

== Finding Trackdata in memory ==

The most convenient targets to look for when using a debugger to locate Trackdata in memory are trackdata11 ([[Highscore File Format|highscore table]]), trackdata13 ([[Replay File Format|replay file header]]) and trackdata14 (element map as in the [[Track File Format|track file]]). Keep in mind that different parts of Trackdata might be loaded or not depending on the current game phase (pre-lap, playing, replaying, or post-lap).

== Trackdata data structures ==

Offsets and byte sizes assume the 1991 DOS [[Game versions|versions]] of Stunts.

{| class="wikitable"
|-
!| # !! Offset (hex) !! Size (hex) !! Size !! Layout !! Description !! Notes
|
|| 01 || 0 || 70a || 1802 || || ||
|
|| 02 || 70a || 70a || 1802 || || ||
|
|| 03 || e14 || 70a || 1802 || || ||
|
|| 04 || 151e || 80 || 128 || || ||
|
|| 05 || 159e || 80 || 128 || || ||
|
|| 06 || 161e || 80 || 128 || || ||
|
|| 07 || 169e || 80 || 128 || || ||
|
|| 08 || 171e || 60 || 96 || || ||
|
|| 09 || 18fe || 180 || 384 || || ||
|
|| 10 || 1a1e || 120 || 288 || || ||
|
|| 11 || 1b8a || 16c || 364 || || ||
|
|| 12 || 1c7a || f0 || 240 || || ||
|
|| 13 || 1c9a || 1a || 26 || || ||
|
|| 14 || 2019 || 385 || 901 || || ||
|
|| 15 || 239e || 385 || 901 || || ||
|
|| 16 || 527e || 2ee0 || 12000 || || ||
|
|| 17 || 5603 || 385 || 901 || || ||
|
|| 18 || 5988 || 385 || 901 || || ||
|
|| 19 || 5d0d || 385 || 901 || || ||
|
|| 20 || 64b9 || 7ac || 1964 || || ||
|
|| 21 || 683e || 385 || 901 || || ||
|
|| 22 || 6bc3 || 385 || 901 || || ||
|
|| 23 || 6bf3 || 30 || 48 || || ||
|-
|}

[[Category:Modding]]
[[Category:Internals]]