Check if Linear Ability hits anything (0019c8ec)
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Check if Linear Abiilty hits anything (AI)
Note: The main routine (19b30c) that uses this routine sets r4 as 3 and r5 as 0.
r4 = 0 = Load Range, 1 = Load AoE, 2 = Load both Range and AoE
r5 = Range/AoE/RangeAoE
Assumptions: X+ = East X- = West Y+ = North Y- = South
0019c8ec: 27bdffd8 addiu r29,r29,0xffd8 0019c8f0: 00a04021 addu r8,r5,r0 r8 = Preset 0019c8f4: 3c05801a lui r5,0x801a 0019c8f8: 24a5f3c4 addiu r5,r5,0xf3c4 r5 = Unit AI Data Pointer 0019c8fc: 34020001 ori r2,r0,0x0001 0019c900: 10820011 beq r4,r2,0x0019c948 Branch to AoE if 1 0019c904: afbf0020 sw r31,0x0020(r29) 0019c908: 28820002 slti r2,r4,0x0002 0019c90c: 10400005 beq r2,r0,0x0019c924 Branch to Next PV Check if PV > 1 0019c910: 00000000 nop 0019c914: 10800008 beq r4,r0,0x0019c938 <Check Range> if PV = 0 0019c918: 29020010 slti r2,r8,0x0010 Set if Range/AoE < 0x0010 0019c91c: 0806725d j 0x0019c974 Skip to Branch 0019c920: 00000000 nop 0019c924: 34020002 ori r2,r0,0x0002 0019c928: 1082000b beq r4,r2,0x0019c958 Skip to Range + AoE Check if 2 0019c92c: 29020010 slti r2,r8,0x0010 Set false if Preset was less than 0x000f 0019c930: 0806725d j 0x0019c974 Skip to Branch 0019c934: 00000000 nop
<Range> 0019c938: 3c08801a lui r8,0x801a 0019c93c: 9108f3c8 lbu r8,-0x0c38(r8) Load Range 0019c940: 0806725d j 0x0019c974 0019c944: 29020010 slti r2,r8,0x0010 Set if Range is less than 16
<AoE> 0019c948: 3c08801a lui r8,0x801a 0019c94c: 9108f3c9 lbu r8,-0x0c37(r8) Load AoE 0019c950: 0806725d j 0x0019c974 0019c954: 29020010 slti r2,r8,0x0010 Set if AoE is less than 16
<AoE + Range> 0019c958: 3c03801a lui r3,0x801a 0019c95c: 9063f3c8 lbu r3,-0x0c38(r3) Load Range 0019c960: 3c02801a lui r2,0x801a 0019c964: 9042f3c9 lbu r2,-0x0c37(r2) Load AoE 0019c968: 00000000 nop 0019c96c: 00624021 addu r8,r3,r2 Range + AoE 0019c970: 29020010 slti r2,r8,0x0010 0019c974: 1440000c bne r2,r0,0x0019c9a8 Branch if Range + AoE combined is less than 16 (0x0010) 0019c978: 34060011 ori r6,r0,0x0011
<Set all linear panels as negative> 0019c97c: 00003021 addu r6,r0,r0 reset r6 0019c980: 3403ffff ori r3,r0,0xffff r3 = -1 0019c984: 00a02021 addu r4,r5,r0 r4 = Unit AI Data Pointer 0019c988: a4830b4c sh r3,0x0b4c(r4) Set (Working) Linear Panel as -1 (fail) 0019c98c: a4830b70 sh r3,0x0b70(r4) Set (Resulting) Linear Panel as -1 (fail) 0019c990: 24c60001 addiu r6,r6,0x0001 0019c994: 28c20012 slti r2,r6,0x0012 0019c998: 1440fffb bne r2,r0,0x0019c988 Loop for all panels 0019c99c: 24840002 addiu r4,r4,0x0002 Linear Panels Flags++ 0019c9a0: 080672e1 j 0x0019cb84 Exit Routine (Set Linear Flags as failed) 0019c9a4: 00000000 nop 0019c9a8: 24a20022 addiu r2,r5,0x0022 0019c9ac: a4400b4c sh r0,0x0b4c(r2) 0019c9b0: 24c6ffff addiu r6,r6,0xffff 0019c9b4: 04c1fffd bgez r6,0x0019c9ac Reset all Panels 0019c9b8: 2442fffe addiu r2,r2,0xfffe 0019c9bc: 90a90c76 lbu r9,0x0c76(r5) r9 = Load Caster? Y 0019c9c0: 90a40c74 lbu r4,0x0c74(r5) r4 = Load Caster? X 0019c9c4: 0500001d bltz r8,0x0019ca3c Branch if Range+AoE is negative 0019c9c8: 00003021 addu r6,r0,r0
<Western and Eastern Linear (X+-)> 0019c9cc: 288d0008 slti r13,r4,0x0008 Set r13 if X is less than 8 0019c9d0: 3c0a801a lui r10,0x801a 0019c9d4: 254af2f8 addiu r10,r10,0xf2f8 r10 = 0x8019f2f8 0019c9d8: 34020007 ori r2,r0,0x0007 0019c9dc: 00446023 subu r12,r2,r4 r12 = 7 - X (West) 0019c9e0: 248bfff9 addiu r11,r4,0xfff9 r11 = X - 7 (East) 0019c9e4: 01003821 addu r7,r8,r0 r7 = Range + AoE 0019c9e8: 01261023 subu r2,r9,r6 Y - Counter 0019c9ec: 04400013 bltz r2,0x0019ca3c Y Cap, branch to RangeAoE check 0019c9f0: 00000000 nop 0019c9f4: 11a00007 beq r13,r0,0x0019ca14 X Cap, branch to Eastern check 0019c9f8: 00071840 sll r3,r7,0x01 r3 = Range+AoE * 2
<Western Linear Target Offset> 0019c9fc: 00021040 sll r2,r2,0x01 Y * 2 0019ca00: 006a1821 addu r3,r3,r10 X Offset 0019ca04: 94630000 lhu r3,0x0000(r3) Load X Panel 0019ca08: 00451021 addu r2,r2,r5 Current Panel address 0019ca0c: 0806728a j 0x0019ca28 0019ca10: 01831804 sllv r3,r3,r12 Get Panel offset of Western Target
<Eastern Linear Target Offset> 0019ca14: 00021040 sll r2,r2,0x01 Y * 2 0019ca18: 006a1821 addu r3,r3,r10 X Offset 0019ca1c: 94630000 lhu r3,0x0000(r3) Load X Panel 0019ca20: 00451021 addu r2,r2,r5 Current Panel Address 0019ca24: 01631807 srav r3,r3,r11 Get Panel offset of Eastern Target
<W/E Loop End> 0019ca28: a4430b4c sh r3,0x0b4c(r2) Save to Linear Panel Flags 0019ca2c: 24c60001 addiu r6,r6,0x0001 Linear Counter++ 0019ca30: 0106102a slt r2,r8,r6 0019ca34: 1040ffec beq r2,r0,0x0019c9e8 Loop for all targets in Linear 0019ca38: 24e7ffff addiu r7,r7,0xffff RangeAoE-- 0019ca3c: 1900001f blez r8,0x0019cabc <Linear Check> if Range+AoE is zero or negative 0019ca40: 34060001 ori r6,r0,0x0001 r6 = 1
<North and South Linear (Y+-)> 0019ca44: 288c0008 slti r12,r4,0x0008 Set r12 if Y is less than 8 0019ca48: 3c07801a lui r7,0x801a 0019ca4c: 24e7f2f8 addiu r7,r7,0xf2f8 r7 = 0x8019f2f8 0019ca50: 34020007 ori r2,r0,0x0007 0019ca54: 00445823 subu r11,r2,r4 r11 = 7 - Y (North) 0019ca58: 248afff9 addiu r10,r4,0xfff9 r10 = Y - 7 (South) 0019ca5c: 2504ffff addiu r4,r8,0xffff r4 = RangeAoe - 1 (?) 0019ca60: 90a20e3b lbu r2,0x0e3b(r5) Load Max Y 0019ca64: 01261821 addu r3,r9,r6 r3 = Caster Y + 1 0019ca68: 0062102a slt r2,r3,r2 0019ca6c: 10400013 beq r2,r0,0x0019cabc <Linear Check> if Caster Y > Max Y 0019ca70: 00000000 nop 0019ca74: 11800007 beq r12,r0,0x0019ca94 <Southern Linear Target Offset> if Y < 8 0019ca78: 00031040 sll r2,r3,0x01 Caster Y * 2
<Northern Linear Target Offset> 0019ca7c: 00041840 sll r3,r4,0x01 0019ca80: 00671821 addu r3,r3,r7 0019ca84: 94630000 lhu r3,0x0000(r3) Load Y 0019ca88: 00451021 addu r2,r2,r5 0019ca8c: 080672aa j 0x0019caa8 Jump to N/S Loop End 0019ca90: 01631804 sllv r3,r3,r11 r3 = Y >> 7-Y (North)
<Southern Linear Target Offset> 0019ca94: 00041840 sll r3,r4,0x01 RangeAoE * 2 0019ca98: 00671821 addu r3,r3,r7 0019ca9c: 94630000 lhu r3,0x0000(r3) Load Y 0019caa0: 00451021 addu r2,r2,r5 0019caa4: 01431807 srav r3,r3,r10 r3 = Y >> Y-7 (South)
<N/S Loop End> 0019caa8: a4430b4c sh r3,0x0b4c(r2) Save Y Offset 0019caac: 24c60001 addiu r6,r6,0x0001 0019cab0: 0106102a slt r2,r8,r6 0019cab4: 1040ffea beq r2,r0,0x0019ca60 Loop for all cells in Linear Range 0019cab8: 2484ffff addiu r4,r4,0xffff X Counter--
<Linear Check> 0019cabc: 8ca2000c lw r2,0x000c(r5) Load AI Flags 0019cac0: 3c030020 lui r3,0x0020 0019cac4: 00431024 and r2,r2,r3 0019cac8: 1040002a beq r2,r0,0x0019cb74 <Exit> if not Linear 0019cacc: 00000000 nop 0019cad0: 90a20e3b lbu r2,0x0e3b(r5) Load Max Y 0019cad4: 00000000 nop 0019cad8: 18400026 blez r2,0x0019cb74 <Exit> if Max Y is negative 0019cadc: 00004821 addu r9,r0,r0 0019cae0: 340a8000 ori r10,r0,0x8000 r10 = 0x8000 0019cae4: 00a04021 addu r8,r5,r0 r8 = Offset
<Y Loop> 0019cae8: 95060b4c lhu r6,0x0b4c(r8) Load Panel Offset? 0019caec: 00000000 nop 0019caf0: 10c0001b beq r6,r0,0x0019cb60 Next if no panel 0019caf4: 00000000 nop 0019caf8: 90a20e3a lbu r2,0x0e3a(r5) Load Max X 0019cafc: 00000000 nop 0019cb00: 18400017 blez r2,0x0019cb60 Y++ if Max X is negative 0019cb04: 00002021 addu r4,r0,r0 0019cb08: 01003821 addu r7,r8,r0 0019cb0c: 00861004 sllv r2,r6,r4
<X Loop> 0019cb10: 30428000 andi r2,r2,0x8000 0019cb14: 1040000d beq r2,r0,0x0019cb4c <X++> if cell doesn't have a targetable unit 0019cb18: 00000000 nop 0019cb1c: 90a20c74 lbu r2,0x0c74(r5) Load Caster? X 0019cb20: 00000000 nop 0019cb24: 10820009 beq r4,r2,0x0019cb4c <X++> if current X 0019cb28: 00000000 nop 0019cb2c: 90a20c76 lbu r2,0x0c76(r5) Load Caster? Y 0019cb30: 00000000 nop 0019cb34: 11220005 beq r9,r2,0x0019cb4c <X++> if current Y 0019cb38: 008a1807 srav r3,r10,r4 0x8000 >> X 0019cb3c: 94e20b4c lhu r2,0x0b4c(r7) Load Linear Panel Flag 0019cb40: 00000000 nop 0019cb44: 00431026 xor r2,r2,r3 Unflag all panels that are not in the Linear path 0019cb48: a4e20b4c sh r2,0x0b4c(r7) Save to Linear Panel Flag
<X++> 0019cb4c: 90a20e3a lbu r2,0x0e3a(r5) Load Max X 0019cb50: 24840001 addiu r4,r4,0x0001 X++ 0019cb54: 0082102a slt r2,r4,r2 0019cb58: 1440ffed bne r2,r0,0x0019cb10 Loop until Max X 0019cb5c: 00861004 sllv r2,r6,r4 <Y++> 0019cb60: 90a20e3b lbu r2,0x0e3b(r5) Load Max Y 0019cb64: 25290001 addiu r9,r9,0x0001 Y++ 0019cb68: 0122102a slt r2,r9,r2 0019cb6c: 1440ffde bne r2,r0,0x0019cae8 Loop until Max Y 0019cb70: 25080002 addiu r8,r8,0x0002
<Exit> 0019cb74: 24a40b70 addiu r4,r5,0x0b70 0019cb78: 24a50b4c addiu r5,r5,0x0b4c 0019cb7c: 0c066ac2 jal 0x0019ab08 Transfer Halfword Values 0019cb80: 34060024 ori r6,r0,0x0024 0019cb84: 8fbf0020 lw r31,0x0020(r29) 0019cb88: 27bd0028 addiu r29,r29,0x0028 0019cb8c: 03e00008 jr r31 0019cb90: 00000000 nop
