Files
alttpr-baserom/compasses.asm
aerinon 842bb043e6 Merge branch 'master' into DRMain
# Conflicts:
#	LTTP_RND_GeneralBugfixes.asm
#	catfish.asm
#	compasses.asm
#	darkworldspawn.asm
#	hooks.asm
#	inventory.asm
#	newitems.asm
#	shopkeeper.asm
#	stats.asm
#	tables.asm

Adn some updates from DR
2021-05-13 12:11:40 -06:00

45 lines
1.4 KiB
NASM

;--------------------------------------------------------------------------------
; $7F5010 - Scratch Space
;--------------------------------------------------------------------------------
DrawDungeonCompassCounts:
LDX $1B : BNE + : RTL : + ; Skip if outdoors
LDX $040C : CPX.b #$FF : BEQ .done ; Skip if not in a dungeon
CMP.w #$0002 : BEQ ++ ; if CompassMode==2, we don't check for the compass
LDA $7EF364 : AND.l .item_masks, X ; Load compass values to A, mask with dungeon item masks
BEQ .done ; skip if we don't have compass
++
LDA $040C : LSR
BNE +
INC
+ TAX : LDA.l CompassTotal, X : AND #$00FF
SEP #$20
JSR HudHexToDec2Digit
REP #$20
PHX
LDX.b $06 : TXA : ORA #$2400 : STA $7EC79A
LDX.b $07 : TXA : ORA #$2400 : STA $7EC79C
PLX
LDA $7EF4BF, X : AND #$00FF
SEP #$20
JSR HudHexToDec2Digit
REP #$20
LDX.b $06 : TXA : ORA #$2400 : STA $7EC794 ; Draw the item count
LDX.b $07 : TXA : ORA #$2400 : STA $7EC796
LDA.w #$2830 : STA $7EC798 ; draw the slash
.done
RTL
.item_masks ; these are dungeon correlations to $7EF364 - $7EF369 so it knows where to store compasses, etc
dw $8000, $4000, $2000, $1000, $0800, $0400, $0200, $0100
dw $0080, $0040, $0020, $0010, $0008, $0004
;--------------------------------------------------------------------------------
; $7EF4C0-7EF4CF - item locations checked indexed by $040C >> 1
;--------------------------------------------------------------------------------