Learn Used Ability

#   ROUTINE: Learn Used Ability
#       Parameters:
#           r4 = (unit) In-battle unit data of learning unit

8018e8ac: 27bdffd0 addiu r29,r29,-0x0030
8018e8b0: afbf002c sw r31,0x002c(r29)
8018e8b4: afb40028 sw r20,0x0028(r29)
8018e8b8: afb30024 sw r19,0x0024(r29)
8018e8bc: afb20020 sw r18,0x0020(r29)
8018e8c0: afb1001c sw r17,0x001c(r29)
8018e8c4: afb00018 sw r16,0x0018(r29)
8018e8c8: 90860003 lbu r6,0x0003(r4)                #   unit.JobID
8018e8cc: 90940012 lbu r20,0x0012(r4)               #   unit.PrimarySkilset
8018e8d0: 28c2004a slti r2,r6,0x004a
8018e8d4: 10400002 beq r2,r0,0x8018e8e0             
8018e8d8: 24c6ffb6 addiu r6,r6,-0x004a              #   jobWheelIndex = unit.JobID - 0x4A
                                                    #   if (unit.JobID < 0x4A) {     // Special character
8018e8dc: 00003021 addu r6,r0,r0                    #       jobWheelIndex = 0
                                                    #   }
8018e8e0: 27a30010 addiu r3,r29,0x0010              #   localLearnedAbilityFlagsPtr = localLearnedAbilityFlags
8018e8e4: 00061040 sll r2,r6,0x01                   #   jobWheelIndex * 2
8018e8e8: 00461021 addu r2,r2,r6                    #   jobWheelIndex * 3
8018e8ec: 00441021 addu r2,r2,r4                    #   (jobWheelIndex * 3) + unit
8018e8f0: 24450099 addiu r5,r2,0x0099               #   learnedAbilityPtr = unit + (jobWheelIndex * 3) + 0x99
8018e8f4: 27a70013 addiu r7,r29,0x0013              #   sentinelPtr = localLearnedAbilityFlagsPtr + 3
                                                    #   do {
8018e8f8: 90a20000 lbu r2,0x0000(r5)                #       *learnedAbilityPtr
8018e8fc: 00000000 nop
8018e900: a0620000 sb r2,0x0000(r3)                 #       *localLearnedAbilityFlagsPtr = *learnedAbilityPtr
8018e904: 24630001 addiu r3,r3,0x0001               #       localLearnedAbilityFlagsPtr = localLearnedAbilityFlagsPtr + 1
8018e908: 0067102a slt r2,r3,r7
8018e90c: 1440fffa bne r2,r0,0x8018e8f8
8018e910: 24a50001 addiu r5,r5,0x0001               #       learnedAbilityPtr = learnedAbilityPtr + 1
                                                    #   } while (localLearnedAbilityFlagsPtr < sentinelPtr);
8018e914: 00008021 addu r16,r0,r0                   #   abilityIndex = 0
8018e918: 00061040 sll r2,r6,0x01                   #   jobWheelIndex * 2
8018e91c: 00461021 addu r2,r2,r6                    #   jobWheelIndex * 3
8018e920: 00441021 addu r2,r2,r4                    #   (jobWheelIndex * 3) + unit
8018e924: 24530099 addiu r19,r2,0x0099              #   learnedAbilityPtr = unit + (jobWheelIndex * 3) + 0x99
                                                    #   for (; abilityIndex < 25; abilityIndex++) {
8018e928: 06010002 bgez r16,0x8018e934
8018e92c: 02001821 addu r3,r16,r0
8018e930: 26030007 addiu r3,r16,0x0007
8018e934: 000388c3 sra r17,r3,0x03                  #       abilityIndex / 8
8018e938: 001118c0 sll r3,r17,0x03
8018e93c: 02031823 subu r3,r16,r3                   #       abilityIndex % 8
8018e940: 34040080 ori r4,r0,0x0080                 #       0x80
8018e944: 03b11021 addu r2,r29,r17                  #       localLearnedAbilityFlagsPtr + (abilityIndex / 8) - 0x10
8018e948: 90420010 lbu r2,0x0010(r2)                #       currentLearnedAbilityFlags = *(localLearnedAbilityFlagsPtr + (abilityIndex / 8))
8018e94c: 00649007 srav r18,r4,r3                   #       abilityFlag = 0x80 >> (abilityIndex % 8)
8018e950: 00521024 and r2,r2,r18                    #       currentLearnedAbilityFlag = currentLearnedAbilityFlags & abilityFlag
8018e954: 1440000c bne r2,r0,0x8018e988             #       if (currentLearnedAbilityFlag != 0) continue;   // Ability already learned
8018e958: 328400ff andi r4,r20,0x00ff
8018e95c: 0c01695a jal 0x8005a568                   #       abilityID = Load Ability From Skillset (unit.PrimarySkillset, abilityIndex);
8018e960: 02002821 addu r5,r16,r0
8018e964: 3c038019 lui r3,0x8019
8018e968: 84633d44 lh r3,0x3d44(r3)                 #       usedAbilityID
8018e96c: 3042ffff andi r2,r2,0xffff
8018e970: 14430005 bne r2,r3,0x8018e988             #       if (abilityID != usedAbilityID) continue;
8018e974: 02711821 addu r3,r19,r17                  #       learnedAbilityPtr + (abilityIndex / 8)
8018e978: 90620000 lbu r2,0x0000(r3)                #       currentLearnedAbilityValue = *(learnedAbilityPtr + (abilityIndex / 8))
8018e97c: 00000000 nop
8018e980: 02421025 or r2,r18,r2                     #       currentLearnedAbilityValue | abilityFlag
8018e984: a0620000 sb r2,0x0000(r3)                 #       *(learnedAbilityPtr + (abilityIndex / 8)) = currentLearnedAbilityValue | abilityFlag
8018e988: 26100001 addiu r16,r16,0x0001
8018e98c: 2a020018 slti r2,r16,0x0018
8018e990: 1440ffe5 bne r2,r0,0x8018e928
8018e994: 00000000 nop
                                                    #   }
8018e998: 8fbf002c lw r31,0x002c(r29)
8018e99c: 8fb40028 lw r20,0x0028(r29)
8018e9a0: 8fb30024 lw r19,0x0024(r29)
8018e9a4: 8fb20020 lw r18,0x0020(r29)
8018e9a8: 8fb1001c lw r17,0x001c(r29)
8018e9ac: 8fb00018 lw r16,0x0018(r29)
8018e9b0: 27bd0030 addiu r29,r29,0x0030
8018e9b4: 03e00008 jr r31
8018e9b8: 00000000 nop