Vertical Fixed Routine

Vertical Fixed Routine
r4 = Caster X
r5 = Caster Y
0017a7bc: 308400ff andi r4,r4,0x00ff				r4 = Caster X
0017a7c0: 30a500ff andi r5,r5,0x00ff                r5 = Caster Y
0017a7c4: 00a05021 addu r10,r5,r0					r10 = Caster Y
0017a7c8: 2406ffe1 addiu r6,r0,-0x001f				r6 = -0x001f
0017a7cc: 3c0c8019 lui r12,0x8019
0017a7d0: 258c2dd8 addiu r12,r12,0x2dd8				r12 = Tile Grid Data (0x192dd8)
0017a7d4: 258d0500 addiu r13,r12,0x0500				r13 = 0x1932d8 (?)
0017a7d8: 340b0001 ori r11,r0,0x0001				r11 = True
0017a7dc: 3c08800e lui r8,0x800e
0017a7e0: 91084e9c lbu r8,0x4e9c(r8)				r8 = Max Map X
0017a7e4: 00000000 nop
0017a7e8: 01480018 mult r10,r8						Caster Y * Max X
0017a7ec: 00864821 addu r9,r4,r6					r9 = Caster X - 0x001f
0017a7f0: 00001012 mflo r2							
0017a7f4: 00491821 addu r3,r2,r9					r3 = (Caster Y * Max X) + (Caster X - 0x001f)
0017a7f8: 00031080 sll r2,r3,0x02
0017a7fc: 00433821 addu r7,r2,r3					r7 = Tile ID
0017a800: 0520000a bltz r9,0x0017a82c				Branch if Caster X -0x1f is negative
0017a804: 00ec1821 addu r3,r7,r12					r3 = Current Tile Data
0017a808: 0128102a slt r2,r9,r8						If Caster X- < Max X
0017a80c: 10400007 beq r2,r0,0x0017a82c				Branch if False
0017a810: 00000000 nop
0017a814: 90620000 lbu r2,0x0000(r3)				r2 = Current Tile's Range
0017a818: 00000000 nop
0017a81c: 10400003 beq r2,r0,0x0017a82c				Branch if no Range
0017a820: 00ed1021 addu r2,r7,r13					r2 = Tile ID + 0x500
0017a824: a06b0001 sb r11,0x0001(r3)				Current Tile = Targeted
0017a828: a04b0001 sb r11,0x0001(r2)				Current Tile + 0x500 = Targeted
0017a82c: 24c60001 addiu r6,r6,0x0001				r6++
0017a830: 28c20020 slti r2,r6,0x0020				if r6 < 0x20
0017a834: 1440ffe9 bne r2,r0,0x0017a7dc				Branch if True
0017a838: 00804821 addu r9,r4,r0					r9 = Caster X
0017a83c: 2406ffe1 addiu r6,r0,-0x001f				r6 = -0x001f
0017a840: 3c088019 lui r8,0x8019                    
0017a844: 25082dd8 addiu r8,r8,0x2dd8               r8 = Tile Grid Data (0x192dd8)
0017a848: 250b0500 addiu r11,r8,0x0500              r11 = 0x1932d8 (?)
0017a84c: 34070001 ori r7,r0,0x0001					r7 = True
0017a850: 3c02800e lui r2,0x800e
0017a854: 90424e9c lbu r2,0x4e9c(r2)				r2 = Max Map X
0017a858: 00a65021 addu r10,r5,r6                   r10 = Caster Y - 0x001f
0017a85c: 01420018 mult r10,r2                      (Caster Y - 0x001f) * Max X
0017a860: 00001012 mflo r2
0017a864: 00491821 addu r3,r2,r9					r3 = (Caster Y - 0x001f) * Max X + Caster X
0017a868: 00031080 sll r2,r3,0x02					r2 = Tile ID
0017a86c: 00432021 addu r4,r2,r3					r4 = Tile ID + Tile ID
0017a870: 0540000d bltz r10,0x0017a8a8				Branch if (Caster Y - 0x001f) is negative
0017a874: 00881821 addu r3,r4,r8					r3 = Current Tile Data
0017a878: 3c02800e lui r2,0x800e
0017a87c: 90424ea0 lbu r2,0x4ea0(r2)				r2 = Max Map Y
0017a880: 00000000 nop
0017a884: 0142102a slt r2,r10,r2					If (Caster Y - 0x001f) < Max Y
0017a888: 10400007 beq r2,r0,0x0017a8a8				Branch if False
0017a88c: 00000000 nop
0017a890: 90620000 lbu r2,0x0000(r3)				r2 = Current Tile's Range
0017a894: 00000000 nop
0017a898: 10400003 beq r2,r0,0x0017a8a8				Branch if Range = 0
0017a89c: 008b1021 addu r2,r4,r11					r2 = Current Tile Data + 0x500
0017a8a0: a0670001 sb r7,0x0001(r3)					Current Tile = Targeted
0017a8a4: a0470001 sb r7,0x0001(r2)					Current Tile + 0x500 = Targeted
0017a8a8: 24c60001 addiu r6,r6,0x0001				r6++
0017a8ac: 28c20020 slti r2,r6,0x0020				If r6 < 0x20
0017a8b0: 1440ffe7 bne r2,r0,0x0017a850				Branch Back if True
0017a8b4: 00000000 nop
0017a8b8: 03e00008 jr r31
0017a8bc: 00000000 nop