Interaction type
An interaction type is a property that all objects have. Most objects have exactly one interaction type, but some have zero. No object may have more than one, and if one is hacked to have more than one, it will crash the game as Mario thinks that he is interacting with two different objects, each with one interaction flag, and cannot find them. Interaction types are analogous to action flags, but interaction flags are not, which can be a source of confusion.
List
| Index/log2 | Description | Mask |
|---|---|---|
| 00 | Hoot | 0x00000001 |
| 01 | Grabbable | 0x00000002 |
| 02 | Door | 0x00000004 |
| 03 | Hurtbox | 0x00000008 |
| 04 | Coin | 0x00000010 |
| 05 | Cap | 0x00000020 |
| 06 | Pole | 0x00000040 |
| 07 | Koopa | 0x00000080 |
| 08 | Spiny | 0x00000100 |
| 09 | Breakable Block | 0x00000200 |
| 10 | Wind | 0x00000400 |
| 11 | Warp Door | 0x00000800 |
| 12 | Star/Key | 0x00001000 |
| 13 | Warp | 0x00002000 |
| 14 | Cannon Base | 0x00004000 |
| 15 | Bounce Top | 0x00008000 |
| 16 | Water Ring | 0x00010000 |
| 17 | Bully | 0x00020000 |
| 18 | Burns | 0x00040000 |
| 19 | Koopa Shell | 0x00080000 |
| 20 | (unused) | 0x00100000 |
| 21 | Hurtbox 2 | 0x00200000 |
| 22 | Bounce Top/Bottom | 0x00400000 |
| 23 | Text | 0x00800000 |
| 24 | Tornado | 0x01000000 |
| 25 | Whirlpool | 0x02000000 |
| 26 | Clam/Bubba | 0x04000000 |
| 27 | BBH Entrance | 0x08000000 |
| 28 | Snufit Bullet | 0x10000000 |
| 29 | Shocks | 0x20000000 |
| 30 | Igloo Barrier | 0x40000000 |
| 31 | (unused) | 0x80000000 |
Description
Hoot
Grabbable
Door
Hurtbox 1 & 2
Hurtbox 1 & 2 are identical with their behavior. If Mario makes contact with an object, it will simply knock him back and generally hurt him. Some examples include Chain Chomp, Mr. Blizzard, and bullet bills.
The only distinction between the two is solely based on what file they are in.