Check for good units to target (based on distance,status,coordinate)
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BATTLE.BIN - Check for good units to target (based on distance,status,coordinate)
Should probably be : Set Enemies proximity score
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Parameters : Nothing
Returns : r2 = 0x00 if 0x19b7 = 0x00 and Unit has moved / can't move
r2 = 0x00 if Unit Can move but has berserk or confuse
r2 = -0x01 if 0001dba8 returns r2 > 0x1b8 (?)
First fill targetable ennemies list ( 0x8019f3c4 + 0xc8d )
Then fill Table 0x0174 with some proximity score for each Tile of the map. the higher the score, the more ennemies surround the tile.
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0019971c: 27bdffc8 addiu r29,r29,-0x0038 |
00199720: afb20028 sw r18,0x0028(r29) |
00199724: 3c12801a lui r18,0x801a |
00199728: 2652f3c4 addiu r18,r18,-0x0c3c |AI data pointer ( 8019f3c4 )
0019972c: afb00020 sw r16,0x0020(r29) |
00199730: 00008021 addu r16,r0,r0 |Initialize loop counter
00199734: afb3002c sw r19,0x002c(r29) |
00199738: 34130001 ori r19,r0,0x0001 |Prepare flag value
0019973c: afbf0030 sw r31,0x0030(r29) |
00199740: afb10024 sw r17,0x0024(r29) |
00199744: 02508821 addu r17,r18,r16 |AI data pointer + Unit offset
@LOOP - though all units
00199748: a2200c8d sb r0,0x0c8d(r17) |Initialize Unit flag in targetable list
0019974c: 0c065b23 jal 0x00196c8c |-->Check target type Returns r2 = 0x00 if This iteration unit is targetable
00199750: 02002021 addu r4,r16,r0 |This iteration Unit ID
00199754: 14400006 bne r2,r0,0x00199770 #If This unit is targetable / Else branch to Next Unit
00199758: 00000000 nop |
0019975c: 0c066632 jal 0x001998c8 |-->AI Check Options - Stop/Don't Act/Sleep/Chicken/Charm Returns 0x00 if enemy Unit could suffer any of these (= is worth to be considered)
00199760: 02002021 addu r4,r16,r0 |
00199764: 14400002 bne r2,r0,0x00199770 #If Unit is an ennemy worth to be considered / Else branch to Next Unit
00199768: 00000000 nop |
0019976c: a2330c8d sb r19,0x0c8d(r17) |Unit Targetable = True
00199770: 26100001 addiu r16,r16,0x0001 |Unit counter + 1
00199774: 2a020015 slti r2,r16,0x0015 |Check limit
00199778: 1440fff3 bne r2,r0,0x00199748 Λ Loop 0x15 Times
0019977c: 02508821 addu r17,r18,r16 |Ai data offset (+1 each iteration)
00199780: 00007021 addu r14,r0,r0 |Initialize elevation loop counter
00199784: 3c118019 lui r17,0x8019 |
00199788: 263108cc addiu r17,r17,0x08cc |Start of Battle stats data pointer
0019978c: 340f000a ori r15,r0,0x000a |r15 = 10 (used to set the proximity score)
00199790: 02406821 addu r13,r18,r0 |AI data pointer ( 8019f3c4 )
00199794: 02406021 addu r12,r18,r0 |AI data pointer ( 8019f3c4 )
00199798: 92420e3b lbu r2,0x0e3b(r18) |Load map max Y
0019979c: 00000000 nop |
001997a0: 1840003c blez r2,0x00199894 #If Map max Y is invalid : Branch to next iteration
001997a4: 00004021 addu r8,r0,r0 |Initialize Y counter
001997a8: 25ab0174 addiu r11,r13,0x0174 |This elevation iteration of Tile's target proximity data Table + 0x120 for high elevation
001997ac: 258a0a74 addiu r10,r12,0x0a74 |This elevation iteration ? + 0x24 for high elevation
001997b0: 95490000 lhu r9,0x0000(r10) |Load Y coordinates Halfword (0x10 reachable tiles flags)
001997b4: 00000000 nop |
001997b8: 11200030 beq r9,r0,0x0019987c #If there is somereachable tile in this row
001997bc: 00000000 nop |
001997c0: 92420e3a lbu r2,0x0e3a(r18) |Load map max X
001997c4: 00000000 nop |
001997c8: 1840002c blez r2,0x0019987c #If Map max X is invalid : Branch to next iteration
001997cc: 00002821 addu r5,r0,r0 |Initialize X counter
001997d0: 01603021 addu r6,r11,r0 |Pointer to 8019f3c4 - 0x174 data +0x10 each Yrow iteration
@LOOP - through all X tiles (in Y row)
001997d4: 00a91004 sllv r2,r9,r5 |Shift Row flag (this iteration X tile flag will be the highest in the halfword)
001997d8: 30428000 andi r2,r2,0x8000 |Bitmask on this iteration Tile's flag (is reachable by AI unit)
001997dc: 10400022 beq r2,r0,0x00199868 #If This Tile is reachable
001997e0: 00000000 nop |
001997e4: a0c00000 sb r0,0x0000(r6) |Initialize this Tile byte in 0x174 data
001997e8: 00008021 addu r16,r0,r0 |Initialize Unit counter
001997ec: 00c03821 addu r7,r6,r0 |This tile 0x174 data pointer
001997f0: 02202021 addu r4,r17,r0 |Start of Battle stats data pointer
@LOOP - through all units
001997f4: 02501021 addu r2,r18,r16 |This iteration unit AI data pointer
001997f8: 90420c8d lbu r2,0x0c8d(r2) |Load this unit targetable flag (in targetable list)
001997fc: 00000000 nop |
00199800: 10400015 beq r2,r0,0x00199858 #If this unit is a Targetable foe / Worth to be considered
00199804: 00000000 nop |
00199808: 90820047 lbu r2,0x0047(r4) |Load This unit X coordinate
0019980c: 00000000 nop |
00199810: 00451823 subu r3,r2,r5 |Delta X (This Unit - This Tile X)
00199814: 04610002 bgez r3,0x00199820 #If Delta X < 0x00
00199818: 00000000 nop |
0019981c: 00031823 subu r3,r0,r3 |Make delta X positive
00199820: 90820048 lbu r2,0x0048(r4) |Load This unit Y coordinates
00199824: 00000000 nop |
00199828: 00481023 subu r2,r2,r8 |Delta Y (This Unit - This Tile Y)
0019982c: 04410002 bgez r2,0x00199838 #If Delta Y < 0x00
00199830: 00000000 nop |
00199834: 00021023 subu r2,r0,r2 |Make delta Y positive
00199838: 00621821 addu r3,r3,r2 |Distance Between This Unit and This Tile
0019983c: 2862000b slti r2,r3,0x000b |
00199840: 10400005 beq r2,r0,0x00199858 #If Unit Distance from Tile is less than 11
00199844: 01e31823 subu r3,r15,r3 |10 - Distance (5 Panels away)
00199848: 90e20000 lbu r2,0x0000(r7) |Load this Tile Proximity data
0019984c: 00000000 nop |
00199850: 00431021 addu r2,r2,r3 |Add Amounts
00199854: a0e20000 sb r2,0x0000(r7) |Update This tile data : Higher amount = Higher nb of target near the tile
00199858: 26100001 addiu r16,r16,0x0001 |Unit counter + 1
0019985c: 2a020015 slti r2,r16,0x0015 |Check Limit
00199860: 1440ffe4 bne r2,r0,0x001997f4 Λ Loop through all units
00199864: 248401c0 addiu r4,r4,0x01c0 |Unit Battle data offset
00199868: 92420e3a lbu r2,0x0e3a(r18) |Load map max X
0019986c: 24a50001 addiu r5,r5,0x0001 |X counter +1
00199870: 00a2102a slt r2,r5,r2 |Check limit
00199874: 1440ffd7 bne r2,r0,0x001997d4 Λ Loop while not at max X
00199878: 24c60001 addiu r6,r6,0x0001 |X Offset in AI Tile's 0x174 Table (+1 each iteration)
0019987c: 256b0010 addiu r11,r11,0x0010 |Row Offset in AI Tile's 0x174 Table (+0x10 each Y iteration)
00199880: 92420e3b lbu r2,0x0e3b(r18) |Load map max Y
00199884: 25080001 addiu r8,r8,0x0001 |Y counter + 1
00199888: 0102102a slt r2,r8,r2 |Check Y Limit
0019988c: 1440ffc8 bne r2,r0,0x001997b0 Λ Loop while not at max Y
00199890: 254a0002 addiu r10,r10,0x0002 |Offset in AI Tile's 0xa74 Table + 0x02 each iteration (Half word)
00199894: 25ad0120 addiu r13,r13,0x0120 |r13 = ? Offset + 0x120 Each iteration
00199898: 25ce0001 addiu r14,r14,0x0001 |Elevation counter + 1
0019989c: 29c20002 slti r2,r14,0x0002 |Check limit
001998a0: 1440ffbd bne r2,r0,0x00199798 Λ Loop 0x2 Times (Elevation 0 and 1)
001998a4: 258c0024 addiu r12,r12,0x0024 |r12 = ? Offset + 0x24 each iteration
001998a8: 8fbf0030 lw r31,0x0030(r29) END
001998ac: 8fb3002c lw r19,0x002c(r29)
001998b0: 8fb20028 lw r18,0x0028(r29)
001998b4: 8fb10024 lw r17,0x0024(r29)
001998b8: 8fb00020 lw r16,0x0020(r29)
001998bc: 27bd0038 addiu r29,r29,0x0038
001998c0: 03e00008 jr r31
001998c4: 00000000 nop
Return location
BATTLE.BIN 00195e44: 00195d94_-_00195f68
