ReC98/th02/hardware/snd_se.asm

74 lines
1.0 KiB
NASM
Raw Normal View History

; void snd_se_reset(void)
func snd_se_reset
mov snd_se_frame, 0
mov snd_se_playing, -1
ret
endfunc
; void DEFCONV snd_se_play(unsigned char se)
retfunc macro
if GAME ge 3
ret 2
else
ret
endif
endm
func snd_se_play
@@se = [bp+6]
push bp
mov bp, sp
mov dx, @@se
cmp snd_fm_possible, 0
jz short @@ret
cmp snd_se_playing, -1
jnz short @@priority?
mov snd_se_playing, dl
pop bp
retfunc
@@priority?:
mov al, snd_se_playing
mov ah, 0
mov bx, ax
mov al, snd_se_priorities[bx]
mov bx, dx
cmp al, snd_se_priorities[bx]
ja short @@ret
mov snd_se_playing, dl
mov snd_se_frame, 0
@@ret:
pop bp
retfunc
endfunc
; void snd_se_update(void)
func snd_se_update
cmp snd_fm_possible, 0
jz short @@ret
cmp snd_se_playing, -1
jz short @@ret
cmp snd_se_frame, 0
jnz short @@unlock?
mov ah, PMD_SE_PLAY
mov al, snd_se_playing
int 60h
@@unlock?:
inc snd_se_frame
mov al, snd_se_playing
mov ah, 0
mov bx, ax
mov al, snd_se_priority_frames[bx]
cmp al, snd_se_frame
jnb short @@ret
mov snd_se_frame, 0
mov snd_se_playing, -1
@@ret:
ret
endfunc