Making a Command cast a single spell

Okay, here's something you can try. Instead of hijacking the normal spell animation code you're going to modify the code for Control to make it look more like Shock.

Follow everything in C-Dude's tutorial except the last step.

Code:

C1/B791:    54 BB        (0E)        (Control)

Leave this as 54 BB. Don't change it to EB AB like in C-Dude's tutorial.

Next, modify the animation code for Control to make it look just like Shock (for reference, the code for Shock is at C1/BB49).

Code:

Modify the code at C1/BB54 to this:

C1/BB54: 20 F7 BB     JSR $BBF7
C1/BB57: 90 05        BCC $BB5B    ; fix branch distance
C1/BB59: A9 39        LDA #$39
C1/BB5B: 20 E1 BB     JSR $BBE1    ; change subroutine to match Shock
C1/BB5E: 60           RTS          ; RTS and NOP for padding
C1/BB5F: EA           NOP
C1/BB60: EA           NOP
C1/BB61: EA           NOP

Last, change the animation data pointer for Control to instead point at 7-Flush.

Code:

C2/B530: 18 16       ; change this to 0E 07 (calculated from 129 * 14 = 1806 = 0x070E)

As an alternative to the last step, you can avoid overwriting the vanilla 7-Flush animation data and instead modify the animation data for Control to match what you put into FF3usME. I don't think this can be done in FF3usME though, you would have to do it with a hex editor (For some reason the animation editor in FF3usME only goes up to 255 and Control is at 404).

Code:

Modify animation data for Control to the following:

D0/95CA: 80 80                    sprite script $0080: Shock (sprite)
D0/95CC: C9 01                    bg1 script $01C9 Riot Blade (bg1)
D0/95CE: FF FF                    no bg3 script
D0/95D0: 00                       sprite palette 0
D0/95D1: EE                       bg1 palette 238
D0/95D2: 00                       bg3 palette 0
D0/95D3: 80                       default sound effect 128
D0/95D4: 09                       init function 9
D0/95D5: 80 00                    extra script $0080: Shock (sprite)
D0/95D7: 10                       delay 16

Hopefully I got all that right. Let me know how it works.