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; Beeper engine
; Copyright (C) 2021 by Juan J. Martinez <jjm@usebox.net>
;
; Permission is hereby granted, free of charge, to any person obtaining a copy
; of this software and associated documentation files (the "Software"), to deal
; in the Software without restriction, including without limitation the rights
; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
; copies of the Software, and to permit persons to whom the Software is
; furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be included in
; all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
; THE SOFTWARE.
;
; .globl beeper_init
; .globl beeper_queue
; .globl beeper_play
; TODO need test on real computer. On XPECCY emulator beeper is absent !
module SOUND_PLAYER
module SET_SOUND
mute:
ld hl,SOUND_PLAYER.DATA.mute
jr SOUND_PLAYER.init
coin:
ld hl,SOUND_PLAYER.DATA.coin
jr SOUND_PLAYER.init
explosion:
ld hl,SOUND_PLAYER.DATA.explosion
jr SOUND_PLAYER.init
impact:
ld hl,SOUND_PLAYER.DATA.impact
jr SOUND_PLAYER.init
eat:
ld hl,SOUND_PLAYER.DATA.eat
jr SOUND_PLAYER.init
key:
ld hl,SOUND_PLAYER.DATA.key
jr SOUND_PLAYER.init
ice:
ld hl,SOUND_PLAYER.DATA.ice
jr SOUND_PLAYER.init
done:
ld hl,SOUND_PLAYER.DATA.done
jr SOUND_PLAYER.init
dead:
ld hl,SOUND_PLAYER.DATA.dead
jr SOUND_PLAYER.init
endmodule
init:
di
ld (sfx_data), hl
ld a,1
ld (sfx_type), a
ld de,sfx_type
ld bc,5
ldir
ei
ret
; beeper_queue::
; di
; ld a, l
; call queue_next
; ei
; ret
queue_next:
ld (sfx_type), a
or a
ret z
dec a
ld hl, (sfx_data)
ld c, l
ld b, h
ld h, #0
ld l, a
ld d, h
ld e, l
add hl, hl
add hl, hl
add hl, de
add hl, bc
ld de, sfx_type
ld bc, #5
ldir
ret
play:
ld a, (sfx_type)
or a
ret z
dec a
jr z, tone
dec a
; shouldn't happen!
ret nz
if EGA
ld a,(curgfxmode)
or 8
ld e,a;0+0x80+8 ;EGA+keep+noturbo
OS_SETGFX ;e=0:EGA, e=2:MC, e=3:6912, e=6:text ;+SET FOCUS ;e=-1: disable gfx (out: e=old gfxmode)
endif
; noise
ld a, (sfx_freq)
ld d, a
ld b, #0
noise_loop:
call rnd
and 0x10
; FIXME: border ?
out (0xfe), a
ld c, d
noise_freq_loop:
dec b
jr z, noise_done
dec c
jr nz, noise_freq_loop
jr noise_loop
tone:
if EGA
ld a,(curgfxmode)
or 8
ld e,a;0+0x80+8 ;EGA+keep+noturbo
OS_SETGFX ;e=0:EGA, e=2:MC, e=3:6912, e=6:text ;+SET FOCUS ;e=-1: disable gfx (out: e=old gfxmode)
endif
ld a, (sfx_freq)
ld d, a
xor a
ld b, a
tone_loop:
; FIXME: border ?
and 0x10
out (0xfe), a
xor 0x10
ld c, d
freq_loop:
dec b
jr z, tone_done
dec c
jr nz, freq_loop
jr tone_loop
tone_done:
noise_done:
ld a, (sfx_next)
ld hl, sfx_frames
dec (hl)
jr z, queue_next
; freq change (slide)
ld a, (sfx_freq_chg)
add d
ld (sfx_freq), a
if EGA
ld a,(curgfxmode)
ld e,a;0+0x80 ;EGA+keep
OS_SETGFX ;e=0:EGA, e=2:MC, e=3:6912, e=6:text ;+SET FOCUS ;e=-1: disable gfx (out: e=old gfxmode)
endif
ret
rnd:
ld hl, 0xf3a1
ld a, h
rra
ld a, l
rra
xor h
ld h, a
ld a, l
rra
ld a, h
rra
xor l
ld l, a
xor h
ld h, a
ld (rnd + 1), hl
ret
sfx_type: db 0
sfx_frames: db 0
sfx_freq: db 0
sfx_freq_chg: db 0
sfx_next: db 0
sfx_data: block 2
module DATA
mute:
db 0,0,0,0,0
coin:
db 1,6,32,-8,2, 1,6,48,-12,0
explosion:
db 2,32,1,-1,0
impact:
db 2,2,5,-33,0
eat:
db 1,8,33,78,0
key:
db 1,1,4,0,0
ice:
db 2,6,22,66,0
done:
db 1,32,99,-3,0
dead:
db 1,32,1,-64,0
endmodule
endmodule