diff options
Diffstat (limited to 'engine/engine_flags.asm')
| -rw-r--r-- | engine/engine_flags.asm | 113 |
1 files changed, 101 insertions, 12 deletions
diff --git a/engine/engine_flags.asm b/engine/engine_flags.asm index 5baa52cc4..74113b4a5 100644 --- a/engine/engine_flags.asm +++ b/engine/engine_flags.asm @@ -1,3 +1,90 @@ +EngineFlagAction:: ; 80430 +; Do action b on engine flag de +; +; b = 0: reset flag +; = 1: set flag +; > 1: check flag, result in c +; +; Setting/resetting does not return a result. + + +; 16-bit flag ids are considered invalid, but it's nice +; to know that the infrastructure is there. + + ld a, d + cp 0 + jr z, .ceiling + jr c, .read ; cp 0 can't set carry! + jr .invalid + +; There are only $a2 engine flags, so +; anything beyond that is invalid too. + +.ceiling + ld a, e + cp NUM_ENGINE_FLAGS + jr c, .read + +; Invalid flags are treated as flag 00. + +.invalid + xor a + ld e, a + ld d, a + +; Get this flag's location. + +.read + ld hl, EngineFlags +; location +rept 2 + add hl, de +endr +; bit + add hl, de + +; location + ld e, [hl] + inc hl + ld d, [hl] + inc hl +; bit + ld c, [hl] + +; What are we doing with this flag? + + ld a, b + cp 1 + jr c, .reset ; b = 0 + jr z, .set ; b = 1 + +; Return the given flag in c. +.check + ld a, [de] + and c + ld c, a + ret + +; Set the given flag. +.set + ld a, [de] + or c + ld [de], a + ret + +; Reset the given flag. +.reset + ld a, c + cpl ; AND all bits except the one in question + ld c, a + ld a, [de] + and c + ld [de], a + ret +; 80462 + + +EngineFlags: ; 80462 ; All locations are in WRAM bank 1. engine_flag: MACRO dwb \1, 1 << \2 @@ -22,7 +109,7 @@ ENDM engine_flag wMomSavingMoney, 0 ; mom saving money ; $8 engine_flag wMomSavingMoney, 7 ; dst - engine_flag wdc39, 0 + engine_flag wdc39, 0 ; unused, possibly related to a 2-day timer engine_flag StatusFlags, 0 ; pokedex engine_flag StatusFlags, 1 ; unown dex @@ -31,7 +118,7 @@ ENDM engine_flag StatusFlags, 6 ; credits skip engine_flag StatusFlags, 7 ; bug contest on ; $10 engine_flag StatusFlags2, 2 ; bug contest timer - engine_flag StatusFlags2, 1 + engine_flag StatusFlags2, 1 ; ??? engine_flag StatusFlags2, 0 ; rockets in radio tower engine_flag StatusFlags2, 4 ; bike shop call enabled (1024 bike steps reqd) engine_flag StatusFlags2, 5 ; give pokerus @@ -71,14 +158,14 @@ ENDM engine_flag UnlockedUnowns, 7 ; 8 ; fly - engine_flag VisitedSpawns, 0 ; your house - engine_flag VisitedSpawns, 1 ; viridian pokecenter - engine_flag VisitedSpawns, 2 ; pallet - engine_flag VisitedSpawns, 3 ; viridian - engine_flag VisitedSpawns, 4 ; pewter - engine_flag VisitedSpawns, 5 ; cerulean ; $38 - engine_flag VisitedSpawns, 6 ; rock tunnel - engine_flag VisitedSpawns, 7 ; vermilion + engine_flag VisitedSpawns, 0 ; your house + engine_flag VisitedSpawns, 1 ; viridian pokecenter + engine_flag VisitedSpawns, 2 ; pallet + engine_flag VisitedSpawns, 3 ; viridian + engine_flag VisitedSpawns, 4 ; pewter + engine_flag VisitedSpawns, 5 ; cerulean ; $38 + engine_flag VisitedSpawns, 6 ; rock tunnel + engine_flag VisitedSpawns, 7 ; vermilion engine_flag VisitedSpawns + 1, 0 ; lavender engine_flag VisitedSpawns + 1, 1 ; saffron engine_flag VisitedSpawns + 1, 2 ; celadon @@ -88,6 +175,7 @@ ENDM engine_flag VisitedSpawns + 1, 6 ; new bark engine_flag VisitedSpawns + 1, 7 ; cherrygrove engine_flag VisitedSpawns + 2, 0 ; violet + ; union cave engine_flag VisitedSpawns + 2, 2 ; azalea engine_flag VisitedSpawns + 2, 3 ; cianwood engine_flag VisitedSpawns + 2, 4 ; goldenrod @@ -97,6 +185,7 @@ ENDM engine_flag VisitedSpawns + 3, 0 ; lake of rage engine_flag VisitedSpawns + 3, 1 ; blackthorn engine_flag VisitedSpawns + 3, 2 ; silver cave + ; fast ship engine_flag VisitedSpawns + 3, 4 ; unused engine_flag wLuckyNumberShowFlag, 0 ; lucky number show @@ -157,7 +246,7 @@ ENDM engine_flag wDailyPhoneItemFlags, 0 ; beverly has nugget engine_flag wDailyPhoneItemFlags, 1 ; jose has star piece - engine_flag wDailyPhoneItemFlags, 2 ; wade has item (see bittable1 $032b-e) + engine_flag wDailyPhoneItemFlags, 2 ; wade has item (see EVENT_WADE_HAS_*** in constants/event_flags.asm) engine_flag wDailyPhoneItemFlags, 3 ; gina has leaf stone ; $80 engine_flag wDailyPhoneItemFlags, 4 ; alan has fire stone engine_flag wDailyPhoneItemFlags, 5 ; liz has thunderstone @@ -165,7 +254,7 @@ ENDM engine_flag wDailyPhoneItemFlags, 7 ; tully has water stone engine_flag wDailyPhoneItemFlags + 1, 0 ; tiffany has pink bow - engine_flag wDailyPhoneItemFlags + 1, 1 ; wilton has item (see bittable1 $032f-31) + engine_flag wDailyPhoneItemFlags + 1, 1 ; wilton has item (see EVENT_WILTON_HAS_*** in constants/event_flags.asm) engine_flag wDailyPhoneTimeOfDayFlags, 0 engine_flag wDailyPhoneTimeOfDayFlags, 1 ; $88 |