Disable Green Panel on all but Target's Tile

From Final Fantasy Hacktics Wiki
Jump to navigation Jump to search
0017b7b4 - 0017b870

Parameters :  r4 pointer to Attacker 0x16e - 0x181

Returns : r2 = -0x01 if invalid Tile, 0x01 of Tile is valid
---------------------------------------------------------------
0017b7b4: 27bdffd0 addiu r29,r29,-0x0030    |
0017b7b8: 27a50010 addiu r5,r29,0x0010      |r5 = Stack Pointer
0017b7bc: afbf002c sw r31,0x002c(r29)       |
0017b7c0: 0c01788b jal 0x0005e22c           |-->Copy_Byte_Data_(20_Bytes) Copy Attacker 0x16e to 0x181 on Stack r29 0x10 to 0x23
0017b7c4: afb00028 sw r16,0x0028(r29)       |
0017b7c8: 93a7001c lbu r7,0x001c(r29)       |r7 = Targeted X coord
0017b7cc: 3c06800e lui r6,0x800e            |
0017b7d0: 90c64e9c lbu r6,0x4e9c(r6)        |r6 = Map Max X  0x800e4e9c
0017b7d4: 93a30020 lbu r3,0x0020(r29)       |r3 = Targeted Y coord
0017b7d8: 93a5001e lbu r5,0x001e(r29)       |r5 = Targeted Elevation
0017b7dc: 00e6102b sltu r2,r7,r6            |r2 = 0x01 if Targeted X < Map Max X
0017b7e0: 1040001e beq r2,r0,0x0017b85c     #If X coordinates is valid (< Map Max X) /Else branch to END (r2 will be set to -0x01)
0017b7e4: 306400ff andi r4,r3,0x00ff             |r4 = Target's Y
0017b7e8: 3c02800e lui r2,0x800e                 |
0017b7ec: 90424ea0 lbu r2,0x4ea0(r2)             |r2 = Map Max Y 0x800e4ea0
0017b7f0: 00000000 nop                           |
0017b7f4: 0082102b sltu r2,r4,r2                 |r2 = 0x01 if Targeted Y < Map Max Y
0017b7f8: 10400018 beq r2,r0,0x0017b85c          #If Y coord is valid (< Map Max Y) /Else branch to END (r2 will be set to -0x01)
0017b7fc: 30a300ff andi r3,r5,0x00ff                 |r3 = Higher Elevation Flag
0017b800: 2c620002 sltiu r2,r3,0x0002                |r2 = 0x01 if elevation < 0x02
0017b804: 10400015 beq r2,r0,0x0017b85c              #If Elevation is valid (< 0x02) /Else branch to END (r2 will be set to -0x01)
0017b808: 00860018 mult r4,r6                            |Targeted Y * Map Max X
0017b80c: 00031200 sll r2,r3,0x08                        |Elevation * 0x100 ( = 0x00 or 0x100)
0017b810: 00001812 mflo r3                               |r3 = Targeted Y * Map Max X
0017b814: 00431021 addu r2,r2,r3                         |r2 = (Targeted Y * Map Max X) + Elevation offset
0017b818: 00471021 addu r2,r2,r7                         |r2 = Targeted X + (Targeted Y * Map Max X) + Elevation offset = Tile ID
0017b81c: 000210c0 sll r2,r2,0x03                        |r2 = Tile ID * 8  (= Tile offset in Tiles data)
0017b820: 3c038019 lui r3,0x8019                         |
0017b824: 2463f8cc addiu r3,r3,-0x0734                   |r3 = Start of tiles data  0x8018f8cc
0017b828: 00438021 addu r16,r2,r3                        |r16 = Targeted tile data pointer
0017b82c: 92020006 lbu r2,0x0006(r16)                    |r2 = Targeted Tile [0x06]
0017b830: 00000000 nop                                   |
0017b834: 30420001 andi r2,r2,0x0001                     |r2 = 0x01 if targeted tile is unselectable
0017b838: 14400009 bne r2,r0,0x0017b860                  #If Targeted Tile is valid (selectable) /Else branch to END (r2 set to -0x01)
0017b83c: 2402ffff addiu r2,r0,-0x0001                   |r2 = -0x01
0017b840: 0c05ed28 jal 0x0017b4a0                            |-->Disable_Green_Panel_Flags Disable all green panels
0017b844: 00000000 nop                                       |
0017b848: 92030005 lbu r3,0x0005(r16)                        |r3 = Targeted Tile [0x05]
0017b84c: 34020001 ori r2,r0,0x0001                          |r2 = 0x01
0017b850: 34630080 ori r3,r3,0x0080                          |r3 = Targeted Tile [0x05] with 0x80
0017b854: 0805ee18 j 0x0017b860                              >>jump to END keeping r2 = 0x01
0017b858: a2030005 sb r3,0x0005(r16)                         |Enable green panel flag on targeted tile  value 0x80 at Tile [0x05]
0017b85c: 2402ffff addiu r2,r0,-0x0001      |r2 = -0x01
0017b860: 8fbf002c lw r31,0x002c(r29)       |
0017b864: 8fb00028 lw r16,0x0028(r29)       |
0017b868: 27bd0030 addiu r29,r29,0x0030     |
0017b86c: 03e00008 jr r31                   
0017b870: 00000000 nop    

Return loaction

Battle.bin                  
0017ac58: Calculate_Targeting_for_Menu_Types