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split flag action asm into common/flag.asm

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This commit is contained in:
yenatch 2013-09-08 00:19:52 -04:00
parent f513cdd888
commit 82c3bb464f
2 changed files with 114 additions and 110 deletions
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113
common/flag.asm Normal file
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@ -0,0 +1,113 @@
Function2e50: ; 2e50
xor a
ld hl, EventFlags
ld [hli], a
ret
; 2e56
Function2e56: ; 2e56
xor a
ld hl, BikeFlags
ld [hli], a
ld [hl], a
ret
; 2e5d
Function2e5d: ; 2e5d
ld a, [$d19a]
cp $2
jr z, .asm_2e69
cp $1
jr z, .asm_2e69
ret
.asm_2e69
ld hl, StatusFlags
res 2, [hl]
ret
; 2e6f
EventFlagAction: ; 0x2e6f
ld hl, EventFlags
call FlagAction
ret
FlagAction: ; 0x2e76
; Perform action b on bit de in flag array hl.
; inputs:
; b: function
; 0 clear bit
; 1 set bit
; 2 check bit
; de: bit number
; hl: index within bit table
; get index within the byte
ld a, e
and 7
; shift de right by three bits (get the index within memory)
srl d
rr e
srl d
rr e
srl d
rr e
add hl, de
; implement a decoder
ld c, 1
rrca
jr nc, .one
rlc c
.one
rrca
jr nc, .two
rlc c
rlc c
.two
rrca
jr nc, .three
swap c
.three
; check b's value: 0, 1, 2
ld a, b
cp 1
jr c, .clearbit ; 0
jr z, .setbit ; 1
; check bit
ld a, [hl]
and c
ld c, a
ret
.setbit
; set bit
ld a, [hl]
or c
ld [hl], a
ret
.clearbit
; clear bit
ld a, c
cpl
and [hl]
ld [hl], a
ret
; 0x2ead
Function2ead: ; 2ead
ld de, ENGINE_POKEDEX
ld b, CHECK_FLAG
callba EngineFlagAction
ld a, c
and a
ret
; 2ebb

111
main.asm
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@ -706,118 +706,9 @@ Function2e4e: ; 2e4e
ret
; 2e50
Function2e50: ; 2e50
xor a
ld hl, EventFlags
ld [hli], a
ret
; 2e56
Function2e56: ; 2e56
xor a
ld hl, BikeFlags
ld [hli], a
ld [hl], a
ret
; 2e5d
INCLUDE "common/flag.asm"
Function2e5d: ; 2e5d
ld a, [$d19a]
cp $2
jr z, .asm_2e69
cp $1
jr z, .asm_2e69
ret
.asm_2e69
ld hl, StatusFlags
res 2, [hl]
ret
; 2e6f
EventFlagAction: ; 0x2e6f
ld hl, EventFlags
call FlagAction
ret
FlagAction: ; 0x2e76
; Perform a function on a bit in memory.
; inputs:
; b: function
; 0 clear bit
; 1 set bit
; 2 check bit
; de: bit number
; hl: index within bit table
; get index within the byte
ld a, e
and $7
; shift de right by three bits (get the index within memory)
srl d
rr e
srl d
rr e
srl d
rr e
add hl, de
; implement a decoder
ld c, $1
rrca
jr nc, .one
rlc c
.one
rrca
jr nc, .two
rlc c
rlc c
.two
rrca
jr nc, .three
swap c
.three
; check b's value: 0, 1, 2
ld a, b
cp 1
jr c, .clearbit ; 0
jr z, .setbit ; 1
; check bit
ld a, [hl]
and c
ld c, a
ret
.setbit
; set bit
ld a, [hl]
or c
ld [hl], a
ret
.clearbit
; clear bit
ld a, c
cpl
and [hl]
ld [hl], a
ret
; 0x2ead
Function2ead: ; 2ead
ld de, ENGINE_POKEDEX
ld b, CHECK_FLAG
callba EngineFlagAction
ld a, c
and a
ret
; 2ebb
Function2ebb: ; 2ebb
ld a, [$c2cc]