Sprite Attribute 3 Register
From SpecNext Wiki
| Number | TBRegisterNumber::$38 |
|---|---|
| Readable | TBRegisterReadable::No |
| Writable | TBRegisterWritable::Yes |
| Short Description | [[ShortDesc::Nextreg port-mirror to write directly into "byte 4" of {{#ask:
PortNumber::$xx57 }} ($xx57{{#ask: PortNumber::$xx57 |mainlabel=- |headers=hide |intro= / |?NumberDec#- }}).]] |
Byte 4 is bitmapped:
| Bit | Description |
|---|---|
| 7 | Enable visibility |
| 6 | Enable fifth sprite attribute byte |
| 5-0 | Pattern index ("Name") |
When the bit 6 is "0", the sprite renderer will ignore value written in fifth attribute byte, for example by {{#ask: TBRegisterNumber::$39 }} ($39), and it will use zero for all the features of fifth attribute byte (it is safe to initialize only four bytes if you are planning to use 4-byte type of sprites).
If you want the value in fifth attribute byte to apply during rendering, bit 6 here must be set to "1".