Some games load palettes that include color 255, but this is
hardcoded to white in SSCI, so just ignore it during merges since
it is ignored when the hardware palette is updated anyway.
Avoid forcing the screen to refresh after a palette change if the
screen is also about to be drawn to, as the palette change + draw
is intended to be an atomic operation.
Sometimes, games accidentally use palette entries that are not
marked as used and expect them to be a particular colour, like the
Phantasmagoria title screen, or the white palette entry (always
255 in DOS/Win).
Remap would crash SCI2.1early games with 19 remap slots, and
did not actually work in most cases in SCI2.1mid+ games.
The SCI16 implementation was moved to its own separate file but
was otherwise touched as little as possible, so may still have
similar problems to the SCI32 code.
1. Split SCI16 and SCI32 code into separate files
2. Use -32 prefixes for SCI32 code and no prefix for SCI16 code,
where possible, to match other existing code
3. Avoid accidental corruption of values from the VM that may be
valid when signed or larger than 8 bits
4. Added documentation
5. Add missing remap CelObj calls
6. Inline where possible in performance-critical code paths
7. Fix bad `matchColor` function, and move it from GfxPalette to
GfxRemap32 since it is only used by GfxRemap32
8. Fix bad capitalisation in getCycleMap
9. Remove unnecessary initialisation of SingleRemaps
10. Update architecture to more closely mirror how SSCI worked
11. Clarify the purpose of each type of remap type (and
associated variable names)
12. Split large `apply` function into smaller units
13. Fix buffer overrun when loading a SCI2.1early game with remap
14. Remove use of `#define` constants
15. Warn instead of crashing with an error on invalid input (to
match SSCI more closely)
16. Change the collision avoidance mechanism between the RemapType
enum and remap kernel functions
17. Add save/load function
1. Reorder member initialisations to match class member order
2. Use #pragma mark instead of comments for annotating sections
3. Remove useless >=0 checks on unsigned types
Colin Snover
Filippos Karapetis
Johannes Schickel
Eugene Sandulenko