Difference between revisions of "FF7/Coordinates encoding"
Jump to navigation
Jump to search
Qhimm>FeuFeu |
Qhimm>Akari |
||
| Line 22: | Line 22: | ||
|- | |- | ||
| 0x00 | | 0x00 | ||
| | | Cloud | ||
|- | |||
| 0x01 | |||
| Tifa | |||
|- | |||
| 0x02 | |||
| Cid | |||
|- | |- | ||
| 0x03 | | 0x03 | ||
| Highwind | | Highwind | ||
|- | |||
| 0x04 | |||
| Yellow Chocobo | |||
|- | |- | ||
| 0x05 | | 0x05 | ||
| Line 32: | Line 41: | ||
| 0x06 | | 0x06 | ||
| Buggy | | Buggy | ||
|- | |||
| 0x07 | |||
| Cannon from Junon | |||
|- | |||
| 0x0C | |||
| Phoenix from Fort Condor | |||
|- | |- | ||
| 0x0D | | 0x0D | ||
| Submarine | | Submarine | ||
|- | |||
| 0x0E | |||
| Gold Saucer | |||
|- | |||
| 0x0F | |||
| Rocket | |||
|- | |||
| 0x10 | |||
| Rocket launch pad | |||
|- | |- | ||
| 0x13 | | 0x13 | ||
| Chocobo | | Chocobo | ||
|- | |||
| 0x18 | |||
| North crater dome | |||
|- | |||
| 0x19 | |||
| Ancient Forest | |||
|- | |- | ||
| 0x1D | | 0x1D | ||
Revision as of 13:19, 2 October 2010
Coordinates on the world map are stored on 2 DWords and some basic decoding has to be done before you can manipulate them.
First DWord :
[1F 1E 1D 1C 1B 1A 19 18:17 16 15 14 13 12 11 10:0F 0E 0D 0C 0B 0A 09 08:07 06 05 04 03 02 01 00] | DIRECTION/0x10 | OBJECT'S ID | X COORDINATE OF THE OBJECT |
Second DWord :
[1F 1E 1D 1C 1B 1A 19 18:17 16 15 14 13 12 11 10:0F 0E 0D 0C 0B 0A 09 08:07 06 05 04 03 02 01 00] | Z COORDINATE OF THE OBJECT | Y COORDINATE OF THE OBJECT |
Notes :
- X is an unsigned value ranging from 0 to 0x47FFF
- Y is an unsigned value ranging from 0 to 0x37FFF
- Z is signed
- Direction is multiplied by 0x10 after reading from save-game, but that's not affecting anything so we can think of it as a byte value. e.g: 00: South, 40: East, 80: North, C0: West
| Value | Object |
|---|---|
| 0x00 | Cloud |
| 0x01 | Tifa |
| 0x02 | Cid |
| 0x03 | Highwind |
| 0x04 | Yellow Chocobo |
| 0x05 | Tiny Bronco |
| 0x06 | Buggy |
| 0x07 | Cannon from Junon |
| 0x0C | Phoenix from Fort Condor |
| 0x0D | Submarine |
| 0x0E | Gold Saucer |
| 0x0F | Rocket |
| 0x10 | Rocket launch pad |
| 0x13 | Chocobo |
| 0x18 | North crater dome |
| 0x19 | Ancient Forest |
| 0x1D | Weapon |
How to decode coordinates
Assuming 1st and 2nd are respectively the first and second DWords :
X = 1st & 0x7FFFF Y = 2nd & 0x3FFFF Z = 2nd >> 0x12 // shift arithmetic right ID = (1st >> 0x13) & 0x1F DIR = (1st >> 0x14) & 0x0FF0