pokecrystal/engine/pokemon/search_party.asm

_FindPartyMonAboveLevel:
	ld hl, wPartyMon1Level
	call FindAboveLevel
	ret

_FindPartyMonAtLeastThatHappy:
	ld hl, wPartyMon1Happiness
	call FindAtLeastThatHappy
	ret

_FindPartyMonThatSpecies:
	ld hl, wPartyMon1Species
	jp FindThatSpecies

_FindPartyMonThatSpeciesYourTrainerID:
	ld hl, wPartyMon1Species
	call FindThatSpecies
	ret z
	ld a, c
	ld hl, wPartyMon1ID
	ld bc, PARTYMON_STRUCT_LENGTH
	call AddNTimes
	ld a, [wPlayerID]
	cp [hl]
	jr nz, .nope
	inc hl
	ld a, [wPlayerID + 1]
	cp [hl]
	jr nz, .nope
	ld a, $1
	and a
	ret

.nope
	xor a
	ret

FindAtLeastThatHappy:
; Sets the bits for the Pokemon that have a happiness greater than or equal to b.
; The lowest bits are used.  Sets z if no Pokemon in your party is at least that happy.
	ld c, $0
	ld a, [wPartyCount]
	ld d, a
.loop
	ld a, d
	dec a
	push hl
	push bc
	ld bc, PARTYMON_STRUCT_LENGTH
	call AddNTimes
	pop bc
	ld a, b
	cp [hl]
	pop hl
	jr z, .greater_equal
	jr nc, .lower

.greater_equal
	ld a, c
	or $1
	ld c, a

.lower
	sla c
	dec d
	jr nz, .loop
	call RetroactivelyIgnoreEggs
	ld a, c
	and a
	ret

FindAboveLevel:
	ld c, $0
	ld a, [wPartyCount]
	ld d, a
.loop
	ld a, d
	dec a
	push hl
	push bc
	ld bc, PARTYMON_STRUCT_LENGTH
	call AddNTimes
	pop bc
	ld a, b
	cp [hl]
	pop hl
	jr c, .greater
	ld a, c
	or $1
	ld c, a

.greater
	sla c
	dec d
	jr nz, .loop
	call RetroactivelyIgnoreEggs
	ld a, c
	and a
	ret

FindThatSpecies:
; Find species b in your party.
; If you have no Pokemon, returns c = -1 and z.
; If that species is in your party, returns its location in c, and nz.
; Otherwise, returns z.
	ld c, -1
	ld hl, wPartySpecies
.loop
	ld a, [hli]
	cp -1
	ret z
	inc c
	cp b
	jr nz, .loop
	ld a, $1
	and a
	ret

RetroactivelyIgnoreEggs:
	ld e, %11111110
	ld hl, wPartySpecies
.loop
	ld a, [hli]
	cp -1
	ret z
	cp EGG
	jr nz, .skip_notegg
	ld a, c
	and e
	ld c, a

.skip_notegg
	rlc e
	jr .loop