EE Engine Bug Questions for Bubb & EEEx

[Sam.]

@Bubb

It appears that there are some engine shenanigans going on with the large wyvern animation that prevents a shadow from being rendered, even if the BAMs are modified to add one.  Can you confirm/locate what might be causing this?  Tested on BGEE, BG2EE, and IWDEE.  You may have been asked this question before, but I'm interested in the answer.

[Bubb]

For CGameAnimationTypeMonsterQuadrant (0x1000-0x11FF), the engine disables shadows if:

extend_direction == 0 && extend_direction_test != 8

It does this by setting the shadow rgb at palette index (1) to 0x0 (if false_color == 0) or 0xFF00 (if false_color != 0). Looks like the animation renders correctly if you set extend_direction_test=8, so maybe that's a way to enable the shadow?