Store main target ID/auto battle

0014171c: 27bdffe8 addiu r29,r29,0xffe8
00141720: afb00010 sw r16,0x0010(r29)
00141724: 00808021 addu r16,r4,r0
00141728: afbf0014 sw r31,0x0014(r29)
0014172c: 0c0602bf jal 0x00180afc				get units data pointer
00141730: 00a02021 addu r4,r5,r0
00141734: a05001b9 sb r16,0x01b9(r2)			store Main Target ID
00141738: 3c038015 lui r3,0x8015
0014173c: 9063d314 lbu r3,-0x2cec(r3)
00141740: 00000000 nop
00141744: a04301b8 sb r3,0x01b8(r2)				store Auto Battle Setting
00141748: 8fbf0014 lw r31,0x0014(r29)
0014174c: 8fb00010 lw r16,0x0010(r29)
00141750: 27bd0018 addiu r29,r29,0x0018
00141754: 03e00008 jr r31
00141758: 00000000 nop