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Fire FG effect 1 (318, rev. 1)
By  MeroMero on 08-29-13, 10:32 am
Category 'Effects and decorations', known
Has the same data as sprites 311, 313, 314, 316, 317, 319, 320, 321 and 322.
Data files:
• /polygon_unit/evf_spark1_a.nsbtx
Sprite fields:
Speed: value at nybble 10-11
Fire FG effect 1 (318, rev. 2)
By  MeroMero on 08-29-13, 10:50 am
Category 'Effects and decorations', known, fully documented
Has the same data as sprites 311, 313, 314, 316, 317, 319, 320, 321 and 322.
Data files:
• /polygon_unit/evf_spark1_a.nsbtx
Sprite fields:
Swaying start position: value at nybble 4. Also doubles as a direction value (Modulo 4) if nybble 10 and/or nybble 11 are not null. 0 is left-down, 1 is left-up, 2 is right-down and 3 is right-up.
Swaying distance: value at nybble 5. 0 is static.
Swaying speed: value at nybble 6. 0 is static, 15 is the fastest.
Mixed shift: value at nybble 7. Shift horizontally and vertically.
Horizontal scrolling: value at nybble 8. 0 is the slowest, 15 is the fastest.
Vertical scrolling: value at nybble 9. 0 is the slowest, 15 is the fastest.
Horizontal speed: value at nybble 10. 0 is the slowest, 15 is the fastest.
Vertical speed: value at nybble 11. 0 is the slowest, 15 is the fastest.