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SCHG:Sonic 2 SMS/Object Editing
From Sonic Retro
| SCHG: Sonic 2 (Master System) |
|---|
| Main Article |
| Art Editing |
| Editing Art |
| Level Editing |
| Editing Levels |
| Object Editing |
| Editing Objects |
| Music Editing |
| Editing Music |
Object Layout
The properties of each object is determined by 9 bytes, which follow this format:
TT XXXX YYYY ZZ SS VVWW (FF)
- TT = object type
- XXXX = horizontal position
- YYYY = vertical position
- ZZ = per-object flags
- SS = object parameters
- VV = tiles to read from the VRAM
- WW = tiles to read from the VRAM when the object is reversed
- FF = end of sprite list (only appears once)
Object Types
| TT SS | Description |
|---|---|
| 00 | Nothing |
| 01 | Sonic |
| 02 | Collected ring sparkle |
| 03 | Power Sneakers stars |
| 04 | Fragment of a smashed block |
| 05 | Invincibility stars |
| 06 | Special object to hide ring counter & timer |
| 07 | Fragment of smashed block (different logic to 04) |
| 08 | Dropped ring |
| 09 | Air timer countdown |
| 0A | Bubbles (ALZ) |
| 0B | Splash of water (ALZ) |
| 0D-0E | Fireball (UGZ) |
| 0F | Explosion |
| 10 | Monitors:
|
| 11-14 | Chaos emerald |
| 15-18 | End level signpost |
| 19 | Falling spike with wrong mappings |
| 1A | Unknown |
| 1B | Falling spike (UGZ) |
| 1C | Clouds (intro sequence) |
| 1D | Clouds & cycling palette (intro sequence) |
| 1E | Tree (intro sequence) |
| 1F | Invalid object |
| 20 | Platforms:
|
| 21 | Platforms:
|
| 22 XX | Platform: moves side-to-side, XX = distance moved |
| 23 | Crab enemy |
| 24 | Fireballs that the crab enemy spits out |
| 25 | Yellow bird (SHZ) |
| 26 | Spears (ALZ):
|
| 27 | Glider (SHZ) |
| 28 | Flywheel (GMZ) |
| 29 | Minecart:
|
| 2A XX | Flywheel: moves side-to-side, XX = distance moved (CEZ) |
| 2B | Spiked crystal (CEZ) |
| 2C | Falling block (CEZ) |
| 2D | Falling log (SHZ) |
| 2E | Unknown |
| 2F | Unknown |
| 30 | Makes Sonic flash |
| 31 | Makes Sonic flash |
| 32 | Spinning turtle enemy (SHZ) |
| 33 | Lobster enemy (ALZ) |
| 34 | Moto bug enemy |
| 35 | Newtron enemy |
| 36 | SHZ boss - mini robot birds |
| 37 | Fish enemy (CEZ) |
| 38 | Burrobot enemy (GMZ) |
| 39 | Bomb enemy |
| 3A | Pig enemy (GMZ) |
| 3B-3F | Unknown |
| 40 | Prison capsule |
| 41 | Animals |
| 42 | GHZ boss - sumo robot |
| 43 | Unknown |
| 44 | GMZ boss - pig robot |
| 45 | GMZ boss - falling rocks |
| 46 | SHZ boss - mini robot birds |
| 47 | SHZ boss - eggs |
| 48 | SHZ boss - big bird robot |
| 49 | SHZ boss - fireball |
| 4A | ALZ boss - seal robot |
| 4B | UGZ boss - Eggman |
| 4C | UGZ boss - cannonball |
| 4D | UGZ boss - pincers thing |
| 4E | SEZ boss - Silver Sonic |
| 4F | ALZ boss - orange bouncing ball |
| 50 | Sonic's hand (title screen) |
| 51 | Tails' face (title screen) |
| 52 | Unknown |
| 53 | CEZ boss - floating cluster of yellow balls |
| 54 | CEZ boss - zigzag thing that crawls across the floor |
| 55 | CEZ boss - Eggman |
| 56-5C | Unknown |
| 5D | Tails (CEZ) |
| 5E | Unknown |
| 5F | Tails & Eggman (intro sequence) |
