Difference between revisions of "Knockback Calculation"
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Destination Tile is checked : if not OK, Target will not be knocked back | Destination Tile is checked : if not OK, Target will not be knocked back | ||
- reachable, targetable, lower than origin tile, not already occupied | - reachable, targetable, lower than origin tile, not already occupied | ||
| − | - Not lava, not too sloping, no | + | - Not lava, not too sloping, no depth, no lava, no obstacle |
If Target is knocked | If Target is knocked | ||
| Line 185: | Line 185: | ||
'''Target Current Action data''' | '''Target Current Action data''' | ||
- Special flags 2 updated with 0x40 (knockedback flag) | - Special flags 2 updated with 0x40 (knockedback flag) | ||
| + | |||
=== Return location === | === Return location === | ||
'''Battle.bin''' | '''Battle.bin''' | ||
00186558: [[Critical Hit Calculation]] | 00186558: [[Critical Hit Calculation]] | ||
001869dc: [[Damage_and_Knockback_Routine_(Dash,_tackle,_throw_stone)]] | 001869dc: [[Damage_and_Knockback_Routine_(Dash,_tackle,_throw_stone)]] | ||
Latest revision as of 11:58, 3 April 2022
No Parameters - Returns nothing If Target is knocked See Notes Update Current Ability Data - 0x801938ed : 0x80 in all cases ("Fall damage not calculated yet" flag) + 0x01 if unit is not flying/is a frog or a chicken + 0x02 if Unit is flying - 0x801938ca : Target Destination Tile X coordinate - 0x801938cb : Target Destination Tile Y coordinate - 0x801938cc : Target Destination Tile Elevation Update Target Current Action data - Special flags 2 updated with 0x40 (knockedback flag) ------------------------------------------------------------------------------------------ 001843ec: 27bdffe0 addiu r29,r29,-0x0020 | 001843f0: 3c038019 lui r3,0x8019 | 001843f4: 906338ec lbu r3,0x38ec(r3) |r3 = Current Ability Target counter 0x801938ec / 801938ec 001843f8: 34020001 ori r2,r0,0x0001 |r2 = 0x01 001843fc: afbf001c sw r31,0x001c(r29) | 00184400: afb20018 sw r18,0x0018(r29) | 00184404: afb10014 sw r17,0x0014(r29) | CHECK KNOCKBACK USABILITY 00184408: 1462007a bne r3,r2,0x001845f4 #If Target Counter = 0x01 /Else Branch to END 0018440c: afb00010 sw r16,0x0010(r29) | 00184410: 3c058019 lui r5,0x8019 | 00184414: 8ca52d98 lw r5,0x2d98(r5) |r2 = Target's Data Pointer 00184418: 00000000 nop | 0018441c: 90a30005 lbu r3,0x0005(r5) |r3 = Target ENTD flags 00184420: 00000000 nop | 00184424: 30620004 andi r2,r3,0x0004 |r2 = 0x04 if Target is immortal 00184428: 14400072 bne r2,r0,0x001845f4 #If Target is Immortal /Else Branch to END 0018442c: 30630003 andi r3,r3,0x0003 |r3 = 0x03 if ENTD flags 0x01 and 0x02 are enabled 00184430: 34020003 ori r2,r0,0x0003 |r2 = 0x03 00184434: 1062006f beq r3,r2,0x001845f4 #If Target ENTD flags 0x01 and 0x02 are enabled (Ramza related ?) /Else Branch to END 00184438: 00000000 nop | 0018443c: 3c048019 lui r4,0x8019 | 00184440: 8c842d94 lw r4,0x2d94(r4) |r4 = Attacker data pointer 00184444: 00000000 nop | 00184448: 10a4006a beq r5,r4,0x001845f4 #If Target is not Attacker /Else Branch to END 0018444c: 00000000 nop | 00184450: 90a20182 lbu r2,0x0182(r5) |r2 = Target's mount info 00184454: 00000000 nop | 00184458: 14400066 bne r2,r0,0x001845f4 #If Target is not riding/beeing ridden /Else Branch to END 0018445c: 00000000 nop | SET DESTINATION TILE 00184460: 90a90047 lbu r9,0x0047(r5) |r9 = Target's X Coord. 00184464: 90830047 lbu r3,0x0047(r4) |r3 = Attacker's X Coord. 00184468: 90a60048 lbu r6,0x0048(r5) |r6 = Target's Y Coord. 0018446c: 90820048 lbu r2,0x0048(r4) |r2 = Attacker's X Coord. 00184470: 01234023 subu r8,r9,r3 |r8 = X difference (Target - Attacker) 00184474: 00c23823 subu r7,r6,r2 |r7 = Y difference (Target - Attacker) 00184478: 05010002 bgez r8,0x00184484 #If X diffrence < 0x00 0018447c: 01002021 addu r4,r8,r0 |r4 = X difference 00184480: 00042023 subu r4,r0,r4 |r4 = Positive X difference 00184484: 04e10002 bgez r7,0x00184490 #If Y difference < 0x00 00184488: 00e01821 addu r3,r7,r0 |r3 = Y difference 0018448c: 00031823 subu r3,r0,r3 |r3 = Positive X difference 00184490: 00831021 addu r2,r4,r3 |r2 = X diff. + Y diff. 00184494: 10400057 beq r2,r0,0x001845f4 #If Target and Attacker are not at same coordinate #If Target is on the same X/Y (above or below), branch to END 00184498: 01208021 addu r16,r9,r0 |r16 = Target X 0018449c: 0064102a slt r2,r3,r4 |r2 = 0x01 if Y diff < X diff 001844a0: 10400008 beq r2,r0,0x001844c4 #If Y Diff < X Diff (X coordinate has more weight) 001844a4: 00c08821 addu r17,r6,r0 |r17 = Target Y 001844a8: 19000003 blez r8,0x001844b8 #If X diff. > 0x00 (Target is Eastward) 001844ac: 34040003 ori r4,r0,0x0003 |r4 = 0x03 (Knocked to East) 001844b0: 08061137 j 0x001844dc >>jump to Destination Tile Check 001844b4: 26100001 addiu r16,r16,0x0001 |r16 = Destination Tile X coord (Target X + 1) #Else X diff < 0x00 (Target is Westward) 001844b8: 34040001 ori r4,r0,0x0001 |r4 = 1 (Knocked to West) 001844bc: 08061137 j 0x001844dc >>jump to Destination Tile Check 001844c0: 2610ffff addiu r16,r16,-0x0001 |r16 = Destination Tile X coord (Target X - 1) #Else Y Coord. Has more weight 001844c4: 18e00003 blez r7,0x001844d4 #If Y diff. > 0x00 (Target is Northward) 001844c8: 34040002 ori r4,r0,0x0002 |r4 = 0x02 (Knocked to North) 001844cc: 08061137 j 0x001844dc >>jump to Destination Tile Check 001844d0: 26310001 addiu r17,r17,0x0001 |r17 = Destination Tile Y coord (Target Y + 1) #Else Y diff < 0x00 (Target is Westward) 001844d4: 00002021 addu r4,r0,r0 |r4 = 0x00 (Knocked to South) 001844d8: 2631ffff addiu r17,r17,-0x0001 |r17 = Destination Tile Y coord (Target Y - 1) CHECK DESTINATION TILE 001844dc: 02002821 addu r5,r16,r0 |r5 = Destination X Coord 001844e0: 0c061184 jal 0x184610 |-->Knockback 2 Returns r2 = Tile Elevation if OK (else -0x01) 001844e4: 02203021 addu r6,r17,r0 |r5 = Destination Y Coord 001844e8: 00409021 addu r18,r2,r0 |r18 = Tile Elevation or -0x01 if Tile is invalid/unreachable 001844ec: 06400041 bltz r18,0x001845f4 #If Tile Elevation is valid /Else Branch to END (Knockback is impossible) 001844f0: 00000000 nop | 001844f4: 3c02800e lui r2,0x800e | 001844f8: 90424e9c lbu r2,0x4e9c(r2) |r2 = Map Max X 001844fc: 00000000 nop | 00184500: 02220018 mult r17,r2 |Destination Y * Max X 00184504: 00121200 sll r2,r18,0x08 |r2 = 0x00 or 0x100 00184508: 00001812 mflo r3 |r3 = Destination Y * Max X 0018450c: 00431021 addu r2,r2,r3 |r3 = (Destination Y * Max X) + Destination X 00184510: 00501021 addu r2,r2,r16 |r3 = Tile ID (Destination Y * Max X) + Destination X + Elevation offset 00184514: 000210c0 sll r2,r2,0x03 |r3 = Tile ID*8 00184518: 3c038019 lui r3,0x8019 | 0018451c: 2463f8cc addiu r3,r3,0xf8cc |r3 = 1st Tile data pointer 00184520: 00432021 addu r4,r2,r3 |r4 = Destination Tile Data pointer 00184524: 90830000 lbu r3,0x0000(r4) |r3 = Destination Tile Type 00184528: 90820006 lbu r2,0x0006(r4) |r2 = Destination Tile Flags [0x06] 0018452c: 00000000 nop | 00184530: 30420002 andi r2,r2,0x0002 |r2 = 0x02 if destination tile is not targetable 00184534: 1440002f bne r2,r0,0x001845f4 #If destination Tile is targetable /Else Branch to END (Knockback is impossible) 00184538: 3063003f andi r3,r3,0x003f |r3 = Destination Tile Type (0x01 to 0x3f) 0018453c: 90820003 lbu r2,0x0003(r4) |r2 = Destination Tile Halves/Depht 00184540: 00000000 nop | 00184544: 304200e0 andi r2,r2,0x00e0 |r2 <> 0x00 If Tile has depht 00184548: 1440002a bne r2,r0,0x001845f4 #If Destination Tile depht = 0x00 /Else Branch to END (Knockback is impossible) 0018454c: 00000000 nop | 00184550: 90820003 lbu r2,0x0003(r4) |r2 = Destination Tile Halves/Depht 00184554: 00000000 nop | 00184558: 3042001f andi r2,r2,0x001f |r2 = Destination Tile Halves 0018455c: 28420003 slti r2,r2,0x0003 |r2 = 0x01 if Halves < 0x03 00184560: 10400024 beq r2,r0,0x001845f4 #If Destination Tile Halves < 0x03 /Else Branch to END (Knockback is impossible) 00184564: 306300ff andi r3,r3,0x00ff |r3 = Destination Tile Type 00184568: 34020012 ori r2,r0,0x0012 |r2 = 0x12 (Type Lava) 0018456c: 10620021 beq r3,r2,0x001845f4 #If Destination Tile is not Lava /If Lava : branch END (Knockback is impossible) 00184570: 3402001c ori r2,r0,0x001c |r2 = 0x1c (Obstacle Type) 00184574: 1062001f beq r3,r2,0x001845f4 #If Destination Tile is not Obstacle /Else Branch to END (Knockback is impossible) 00184578: 00000000 nop | ENABLE KNOCKBACK 0018457c: 3c048019 lui r4,0x8019 | 00184580: 8c842d98 lw r4,0x2d98(r4) |r4 = Target data pointer 00184584: 0c05fc08 jal 0x0017f020 |-->Float/Float/Fly_movements Returns r2 with movement info 00184588: 00000000 nop | 0018458c: 30420080 andi r2,r2,0x0080 |r2 = 0x80 if Unit is flying 00184590: 1040000a beq r2,r0,0x001845bc #If Unit is flying /If not flying branch with r2 = 0x81 00184594: 34020081 ori r2,r0,0x0081 |r2 = 0x81 00184598: 3c028019 lui r2,0x8019 | 0018459c: 8c422d98 lw r2,0x2d98(r2) |r2 = Target data pointer 001845a0: 00000000 nop | 001845a4: 9042005a lbu r2,0x005a(r2) |r2 = Target 3rd set of current Statuses 001845a8: 00000000 nop | 001845ac: 30420006 andi r2,r2,0x0006 |r2 = 0x06 if Target is a frog or a chicken 001845b0: 14400002 bne r2,r0,0x001845bc #If Target is not a frog nor a chicken /Else branch (r2 = 0x81) 001845b4: 34020081 ori r2,r0,0x0081 |r2 = 0x81 001845b8: 34020082 ori r2,r0,0x0082 |r2 = 0x82 001845bc: 3c018019 lui r1,0x8019 | 001845c0: a02238ed sb r2,0x38ed(r1) |Store r2 at 0x801938ed 801938ed 001845c4: 3c038019 lui r3,0x8019 | 001845c8: 8c632d90 lw r3,0x2d90(r3) |r3 = Target current action data pointer 001845cc: 3c018019 lui r1,0x8019 | 001845d0: a03038ca sb r16,0x38ca(r1) |Store Destination Tile X at 0x801938ca (Current ability Target New X) 801938ca 001845d4: 3c018019 lui r1,0x8019 | 001845d8: a03138cb sb r17,0x38cb(r1) |Store Destination Tile Y at 0x801938cb (Current ability Target New Y) 801938cb 001845dc: 3c018019 lui r1,0x8019 | 001845e0: a03238cc sb r18,0x38cc(r1) |Store Destination Tile elevation at 0x801938cc (Current ability Target New elevation) 801938cc 001845e4: 94620010 lhu r2,0x0010(r3) |r2 = Target Current Action special flags 1 and 2 001845e8: 00000000 nop | 001845ec: 34424000 ori r2,r2,0x4000 |r2 = specials flags + Knockback flag 001845f0: a4620010 sh r2,0x0010(r3) |Store TCA Special flags with knockback enabled 001845f4: 8fbf001c lw r31,0x001c(r29) END 001845f8: 8fb20018 lw r18,0x0018(r29) 001845fc: 8fb10014 lw r17,0x0014(r29) 00184600: 8fb00010 lw r16,0x0010(r29) 00184604: 27bd0020 addiu r29,r29,0x0020 00184608: 03e00008 jr r31 0018460c: 00000000 nop
Notes
Routine is skipped if
- Current Ability Target Counter is not 0x01 ( 0x801938ec / 801938ec )
- Target is immortal (Target 0x05 ENTD flags)
- Target ENTD flags 0x01 and 0x02 ar enabled (Ramza avoids Knockback here)
- Target = Attacker
- Target is ridding (or being ridden)
Then Knockback direction is calculated
Destination Tile is checked : if not OK, Target will not be knocked back
- reachable, targetable, lower than origin tile, not already occupied
- Not lava, not too sloping, no depth, no lava, no obstacle
If Target is knocked
Current Ability Data
- 0x801938ed : 0x80 in all cases ("Fall damage not calculated yet" flag)
+ 0x01 if unit is not flying/is a frog or a chicken
+ 0x02 if Unit is flying
- 0x801938ca : Target Destination Tile X coordinate
- 0x801938cb : Target Destination Tile Y coordinate
- 0x801938cc : Target Destination Tile Elevation
Target Current Action data
- Special flags 2 updated with 0x40 (knockedback flag)
Return location
Battle.bin 00186558: Critical Hit Calculation 001869dc: Damage_and_Knockback_Routine_(Dash,_tackle,_throw_stone)
