#sprite #graphics #starfield #amiga

app amiga-starfield-generator

Amiga starfield generator

3 stable releases

1.1.0 Aug 30, 2024
1.0.1 Aug 23, 2024
1.0.0 Aug 22, 2024

#640 in Command line utilities

MIT license

5KB
55 lines

Amiga starfield generator

This utility generates sprite data words to create a starfield. It creates random stars on three "depths" (far, med, near) and a table with corresponding "speeds" (position increment). You can choose the start and end lines, and the line interval between two stars:

Starting line (decimal - min = 44)?
149
Ending line (decimal - max = 298)?
254
Stars line interval (decimal)?
1
0x9520,0x9600,
0x8000,0x0000,
0x971F,0x9800,
0x8000,0x8000,
...
0xFD62,0xFE00,
0x8000,0x8000,
0x0000,0x0000

Speeds table:
[1, 3, 2, 1, 3, 1, 1, 1, 3, 3, 2, 2, 1, 1, 2, 3, 2, 1, 1, 1, 2, 2, 1, 2, 3, 1, 1, 3, 2, 2, 2, 2, 1, 3, 1, 1, 3, 3, 2, 3, 2, 2, 2, 1, 1, 1, 3, 1, 2, 1, 1, 2, 3]
53 stars generated.

It also handles vertical positions after $FF.

To install:

cargo install amiga-starfield-generator

Dependencies

~315KB