ref: da87d2a929b1d58175efe063833c124d8ba702c9
dir: /battle/ai/switch.asm/
CheckPlayerMoveTypeMatchups: ; 3484e ; Check how well the moves you've already used ; fare against the enemy's Pokemon. Used to ; score a potential switch. push hl push de push bc ld a, 10 ld [wc716], a ld hl, PlayerUsedMoves ld a, [hl] and a jr z, .unknown_moves ld d, NUM_MOVES ld e, 0 .loop ld a, [hli] and a jr z, .exit push hl dec a ld hl, Moves + MOVE_POWER call GetMoveAttr and a jr z, .next inc hl call GetMoveByte ld hl, EnemyMonType call CheckTypeMatchup ld a, [wTypeMatchup] cp 10 + 1 ; 1.0 + 0.1 jr nc, .super_effective and a jr z, .next cp 10 ; 1.0 jr nc, .neutral .not_very_effective ld a, e cp 1 ; 0.1 jr nc, .next ld e, 1 jr .next .neutral ld e, 2 jr .next .super_effective call .DecreaseScore pop hl jr .done .next pop hl dec d jr nz, .loop .exit ld a, e cp 2 jr z, .done call .IncreaseScore ld a, e and a jr nz, .done call .IncreaseScore jr .done .unknown_moves ld a, [BattleMonType1] ld b, a ld hl, EnemyMonType1 call CheckTypeMatchup ld a, [wTypeMatchup] cp 10 + 1 ; 1.0 + 0.1 jr c, .ok call .DecreaseScore .ok ld a, [BattleMonType2] cp b jr z, .ok2 call CheckTypeMatchup ld a, [wTypeMatchup] cp 10 + 1 ; 1.0 + 0.1 jr c, .ok2 call .DecreaseScore .ok2 .done call .CheckEnemyMoveMatchups pop bc pop de pop hl ret ; 348de .CheckEnemyMoveMatchups: ; 348de ld de, EnemyMonMoves ld b, NUM_MOVES + 1 ld c, 0 ld a, [wTypeMatchup] push af .loop2 dec b jr z, .exit2 ld a, [de] and a jr z, .exit2 inc de dec a ld hl, Moves + MOVE_POWER call GetMoveAttr and a jr z, .loop2 inc hl call GetMoveByte ld hl, BattleMonType1 call CheckTypeMatchup ld a, [wTypeMatchup] ; immune and a jr z, .loop2 ; not very effective inc c cp 10 jr c, .loop2 ; neutral rept 5 inc c endr cp 10 jr z, .loop2 ; super effective ld c, 100 jr .loop2 .exit2 pop af ld [wTypeMatchup], a ld a, c and a jr z, .doubledown ; double down cp 5 jr c, .DecreaseScore ; down cp 100 ret c jr .IncreaseScore ; up .doubledown call .DecreaseScore ; fallthrough ; 34931 .DecreaseScore: ; 34931 ld a, [wc716] dec a ld [wc716], a ret ; 34939 .IncreaseScore: ; 34939 ld a, [wc716] inc a ld [wc716], a ret ; 34941 CheckAbleToSwitch: ; 34941 xor a ld [wEnemySwitchMonParam], a call FindAliveEnemyMons ret c ld a, [EnemySubStatus1] bit SUBSTATUS_PERISH, a jr z, .no_perish ld a, [EnemyPerishCount] cp 1 jr nz, .no_perish ; Perish count is 1 call FindAliveEnemyMons call FindEnemyMonsWithEnoughHP call FindEnemyMonsThatResistPlayer call Function34a85 ld a, e cp 2 jr nz, .not_2 ld a, [wc716] add $30 ld [wEnemySwitchMonParam], a ret .not_2 call FindAliveEnemyMons sla c sla c ld b, $ff .loop1 inc b sla c jr nc, .loop1 ld a, b add $30 ld [wEnemySwitchMonParam], a ret .no_perish call CheckPlayerMoveTypeMatchups ld a, [wc716] cp 11 ret nc ld a, [LastEnemyCounterMove] and a jr z, .no_last_counter_move call Function34a2a ld a, [wc716] and a jr z, .no_last_counter_move ld c, a call Function34aa7 ld a, [wc716] cp $ff ret z ld b, a ld a, e cp 2 jr z, .not_2_again call CheckPlayerMoveTypeMatchups ld a, [wc716] cp 10 ret nc ld a, b add $10 ld [wEnemySwitchMonParam], a ret .not_2_again ld c, $10 call CheckPlayerMoveTypeMatchups ld a, [wc716] cp 10 jr nc, .okay ld c, $20 .okay ld a, b add c ld [wEnemySwitchMonParam], a ret .no_last_counter_move call CheckPlayerMoveTypeMatchups ld a, [wc716] cp 10 ret nc call FindAliveEnemyMons call FindEnemyMonsWithEnoughHP call FindEnemyMonsThatResistPlayer call Function34a85 ld a, e cp $2 ret nz ld a, [wc716] add $10 ld [wEnemySwitchMonParam], a ret ; 349f4 FindAliveEnemyMons: ; 349f4 ld a, [OTPartyCount] cp 2 jr c, .only_one ld d, a ld e, 0 ld b, 1 << (PARTY_LENGTH - 1) ld c, 0 ld hl, OTPartyMon1HP .loop ld a, [CurOTMon] cp e jr z, .next push bc ld b, [hl] inc hl ld a, [hld] or b pop bc jr z, .next ld a, c or b ld c, a .next srl b push bc ld bc, PARTYMON_STRUCT_LENGTH add hl, bc pop bc inc e dec d jr nz, .loop ld a, c and a jr nz, .more_than_one .only_one scf ret .more_than_one and a ret ; 34a2a Function34a2a: ; 34a2a ld hl, OTPartyMon1 ld a, [OTPartyCount] ld b, a ld c, 1 << (PARTY_LENGTH - 1) ld d, 0 xor a ld [wc716], a .asm_34a39 ld a, [CurOTMon] cp d push hl jr z, .asm_34a77 push hl push bc ld bc, MON_HP add hl, bc pop bc ld a, [hli] or [hl] pop hl jr z, .asm_34a77 ld a, [hl] ld [CurSpecies], a call GetBaseData ld a, [LastEnemyCounterMove] dec a ld hl, Moves + MOVE_POWER call GetMoveAttr and a jr z, .asm_34a77 inc hl call GetMoveByte ld hl, BaseType call CheckTypeMatchup ld a, [wTypeMatchup] and a jr nz, .asm_34a77 ld a, [wc716] or c ld [wc716], a .asm_34a77 pop hl dec b ret z push bc ld bc, PARTYMON_STRUCT_LENGTH add hl, bc pop bc inc d srl c jr .asm_34a39 ; 34a85 Function34a85: ; 34a85 push bc ld a, [OTPartyCount] ld e, a ld hl, OTPartyMon1HP ld b, 1 << (PARTY_LENGTH - 1) ld c, 0 .loop ld a, [hli] or [hl] jr z, .next ld a, b or c ld c, a .next srl b push bc ld bc, PartyMon2HP - (PartyMon1HP + 1) add hl, bc pop bc dec e jr nz, .loop ld a, c pop bc and c ld c, a ; fallthrough ; 34aa7 Function34aa7: ; 34aa7 ld a, $ff ld [wc716], a ld hl, OTPartyMon1Moves ld b, 1 << (PARTY_LENGTH - 1) ld d, 0 ld e, 0 .loop ld a, b and c jr z, .next push hl push bc ld b, NUM_MOVES ld c, 0 .loop3 ld a, [hli] and a push hl jr z, .break3 dec a ld hl, Moves + MOVE_POWER call GetMoveAttr and a jr z, .nope inc hl call GetMoveByte ld hl, BattleMonType1 call CheckTypeMatchup ld a, [wTypeMatchup] cp 10 jr c, .nope ld e, 1 cp 10 + 1 jr c, .nope ld e, 2 jr .break3 .nope pop hl dec b jr nz, .loop3 jr .done .break3 pop hl .done ld a, e pop bc pop hl cp $2 jr z, .done2 cp $1 jr nz, .next ld a, d or b ld d, a jr .next .next push bc ld bc, PARTYMON_STRUCT_LENGTH add hl, bc pop bc srl b jr nc, .loop ld a, d ld b, a and a ret z .done2 push bc sla b sla b ld c, $ff .loop2 inc c sla b jr nc, .loop2 ld a, c ld [wc716], a pop bc ret ; 34b20 FindEnemyMonsThatResistPlayer: ; 34b20 push bc ld hl, OTPartySpecies ld b, 1 << (PARTY_LENGTH - 1) ld c, 0 .loop ld a, [hli] cp $ff jr z, .done push hl ld [CurSpecies], a call GetBaseData ld a, [LastEnemyCounterMove] and a jr z, .skip_move dec a ld hl, Moves + MOVE_POWER call GetMoveAttr and a jr z, .skip_move inc hl call GetMoveByte jr .check_type .skip_move ld a, [BattleMonType1] ld hl, BaseType call CheckTypeMatchup ld a, [wTypeMatchup] cp 10 + 1 jr nc, .dont_choose_mon ld a, [BattleMonType2] .check_type ld hl, BaseType call CheckTypeMatchup ld a, [wTypeMatchup] cp 10 + 1 jr nc, .dont_choose_mon ld a, b or c ld c, a .dont_choose_mon srl b pop hl jr .loop .done ld a, c pop bc and c ld c, a ret ; 34b77 FindEnemyMonsWithEnoughHP: ; 34b77 push bc ld de, OTPartySpecies ld b, 1 << (PARTY_LENGTH - 1) ld c, 0 ld hl, OTPartyMon1HP .loop ld a, [de] inc de cp $ff jr z, .done push hl push bc ld b, [hl] inc hl ld c, [hl] rept 2 inc hl endr ; hl = MaxHP + 1 ; b = (4 * b) % $100 + (c & 3) ; c = c / 4 srl c rl b srl c rl b ; a = (MaxHP / $100) - b - (1 if c > (MaxHP % $100) else 0) ld a, [hld] cp c ld a, [hl] sbc b pop bc jr nc, .next ld a, b or c ld c, a .next srl b pop hl push bc ld bc, PARTYMON_STRUCT_LENGTH add hl, bc pop bc jr .loop .done ld a, c pop bc and c ld c, a ret ; 34bb1