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split Sine/Cosine into engine/sine.asm

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This commit is contained in:
yenatch 2013-09-03 18:40:12 -04:00
parent 12e6ff3fc6
commit 23bb05851b
2 changed files with 23 additions and 24 deletions
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22
engine/sine.asm Normal file
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@ -0,0 +1,22 @@
Cosine: ; 1b0f
; Return d * cos(a) in hl
add $10 ; 90 degrees
Sine: ; 1b11
; Return d * sin(a) in hl
; a is a signed 6-bit value.
ld e, a
ld a, [hROMBank]
push af
ld a, BANK(_Sine)
rst Bankswitch
call _Sine
pop af
rst Bankswitch
ret
; 1b1e

25
main.asm
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@ -29,30 +29,7 @@ INCLUDE "engine/copy.asm"
INCLUDE "engine/text.asm"
INCLUDE "engine/video.asm"
INCLUDE "engine/map_objects.asm"
Cosine: ; 1b0f
; Return d * cos(a) in hl
add $10 ; 90 degrees
Sine: ; 1b11
; Return d * sin(a) in hl
; a is a signed 6-bit value.
ld e, a
ld a, [hROMBank]
push af
ld a, BANK(_Sine)
rst Bankswitch
call _Sine
pop af
rst Bankswitch
ret
; 1b1e
INCLUDE "engine/sine.asm"
Function1b1e: ; 1b1e
ld [$d003], a