This is the same as EFFECT_VWAVE_CROSSFADE, except with a different
maximum amplitude and the screen scrolls vertically.
(Used in Rance 9 when transitioning to a flashback scene.)
Use the normal effect system for fullscreen effects. This allows effects
that are implemented via shaders to be used, such as the blind effects
which are used frequently in Daibanchou.
- Create separate directories for source and header files.
- Build code shared between xsystem4 and aindump as a static library.
- Create header dirs gfx/ system4/ and vm/
- Make CG.c/h usable without a running VM