mirror of
https://github.com/a2-4am/4cade.git
synced 2024-11-29 22:49:26 +00:00
17 lines
893 B
Plaintext
17 lines
893 B
Plaintext
|
Parser in one file
|
||
|
|
All game-help in one separate file
|
||
|
|
|
||
|
|
Game-help file starts with array[26] of offset/size pairs.
|
||
|
|
Offset points to array[] of all games that start with that letter, and size of that array[].
|
||
|
|
array[] is collection of short-name/offset of each game-help.
|
||
|
|
short-name is Pascal string for easy iteration.
|
||
|
|
size is omitted since upper bound is known, and with nearly 400 games, we save two blocks.
|
||
|
|
|
||
|
|
Parser accepts short-name as parameter.
|
||
|
|
Parser reads fixed size game-help header.
|
||
|
|
Parser uses starting letter to index into array[26] to find offset/size for short-names array starting with that letter.
|
||
|
|
Parser reads [size bytes] of short-names array.
|
||
|
|
Parse iterates through short-names array to find a complete match.
|
||
|
|
Parser reads 40x25 bytes of game-help from corresponding offset, returns it to display code to draw it.
|
||
|
|
Game-help is 0-terminated so dislpay code knows when to stop.
|