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convert the sounds in cx16 tehtriz to use the psg module instead

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This commit is contained in:
Irmen de Jong 2022-07-03 01:40:29 +02:00
parent 4bdac7404a
commit 3ec05709d5
3 changed files with 37 additions and 52 deletions
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5
compiler/res/prog8lib/cx16/psg.p8
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@ -15,8 +15,10 @@ psg {
const ubyte RIGHT = %10000000
sub voice(ubyte voice_num, ubyte channel, ubyte volume, ubyte waveform, ubyte pulsewidth) {
envelope_states[voice_num] = 255
cx16.vpoke(1, $f9c2 + voice_num * 4, channel | volume)
cx16.vpoke(1, $f9c3 + voice_num * 4, waveform | pulsewidth)
envelope_volumes[voice_num] = mkword(volume, 0)
}
; sub freq_hz(ubyte voice_num, float hertz) {
@ -34,6 +36,7 @@ psg {
sub volume(ubyte voice_num, ubyte vol) {
uword reg = $f9c2 + voice_num * 4
cx16.vpoke(1, reg, cx16.vpeek(1, reg) & %11000000 | vol)
envelope_volumes[voice_num] = mkword(vol, 0)
}
sub pulse_width(ubyte voice_num, ubyte pw) {
@ -100,7 +103,7 @@ psg {
}
}
; set new volumes using vera stride of 4
; set new volumes of all 16 voices, using vera stride of 4
cx16.push_vera_context()
cx16.VERA_CTRL = 0
cx16.VERA_ADDR_L = $c2

3
docs/source/todo.rst
View File

@ -3,8 +3,7 @@ TODO
For next release
^^^^^^^^^^^^^^^^
- convert the sounds in cx16 tehtriz to use the psg module instead
- notify petaxian that it could use the psg module too?
...
Need help with
^^^^^^^^^^^^^^

81
examples/cx16/tehtriz.p8
View File

@ -5,13 +5,12 @@
; wall kick rotations
; shows next piece
; staged speed increase
; simplistic sound effects (Vera PSG)
; simple sound effects (Vera PSG)
%import syslib
%import textio
%import test_stack
%import psg
main {
@ -212,11 +211,14 @@ waitkey:
}
}
if num_lines {
if num_lines>3
if num_lines>3 {
sound.lineclear_big()
else
sys.wait(25) ; slight delay to flash the line
}
else {
sound.lineclear()
sys.wait(10) ; slight delay to flash the line
sys.wait(15) ; slight delay to flash the line
}
for linepos in complete_lines
if linepos and blocklogic.isLineFull(linepos)
blocklogic.collapse(linepos)
@ -592,71 +594,52 @@ blocklogic {
sound {
sub init() {
cx16.vpoke(1, $f9c2, %00111111) ; volume max, no channels
psg.silent()
cx16.set_irq(&psg.envelopes_irq, true)
}
sub blockrotate() {
; soft click/"tschk" sound
uword freq = 15600
cx16.vpoke(1, $f9c0, lsb(freq))
cx16.vpoke(1, $f9c1, msb(freq))
cx16.vpoke(1, $f9c2, %11110000) ; half volume
cx16.vpoke(1, $f9c3, %11000000) ; noise waveform
sys.wait(2)
cx16.vpoke(1, $f9c2, 0) ; shut off
psg.freq(0, 15600)
psg.voice(0, psg.LEFT | psg.RIGHT, 32, psg.NOISE, 0)
psg.envelope(0, 200, 1, 100)
}
sub blockdrop() {
; swish
uword freq = 4600
cx16.vpoke(1, $f9c0, lsb(freq))
cx16.vpoke(1, $f9c1, msb(freq))
cx16.vpoke(1, $f9c2, %11110000) ; half volume
cx16.vpoke(1, $f9c3, %11000000) ; noise waveform
sys.wait(6)
cx16.vpoke(1, $f9c2, 0) ; shut off
psg.freq(1, 4600)
psg.voice(1, psg.LEFT | psg.RIGHT, 32, psg.NOISE, 0)
psg.envelope(1, 200, 5, 20)
}
sub swapping() {
; beep
uword freq = 1500
cx16.vpoke(1, $f9c0, lsb(freq))
cx16.vpoke(1, $f9c1, msb(freq))
cx16.vpoke(1, $f9c2, %11110000) ; half volume
cx16.vpoke(1, $f9c3, %10000000) ; triangle waveform
sys.wait(6)
cx16.vpoke(1, $f9c2, 0) ; shut off
psg.freq(2, 1500)
psg.voice(2, psg.LEFT | psg.RIGHT, 32, psg.TRIANGLE, 0)
psg.envelope(2, 100, 6, 10)
}
sub lineclear() {
; explosion
uword freq = 1400
cx16.vpoke(1, $f9c0, lsb(freq))
cx16.vpoke(1, $f9c1, msb(freq))
cx16.vpoke(1, $f9c2, %11111111) ; max volume
cx16.vpoke(1, $f9c3, %11000000) ; noise waveform
sys.wait(8)
cx16.vpoke(1, $f9c2, 0) ; shut off
psg.freq(3, 1400)
psg.voice(3, psg.LEFT | psg.RIGHT, 63, psg.NOISE, 0)
psg.envelope(3, 100, 8, 10)
}
sub lineclear_big() {
; big explosion
uword freq = 2500
cx16.vpoke(1, $f9c0, lsb(freq))
cx16.vpoke(1, $f9c1, msb(freq))
cx16.vpoke(1, $f9c2, %11111111) ; max volume
cx16.vpoke(1, $f9c3, %11000000) ; noise waveform
sys.wait(30)
cx16.vpoke(1, $f9c2, 0) ; shut off
psg.freq(4, 2500)
psg.voice(4, psg.LEFT | psg.RIGHT, 63, psg.NOISE, 0)
psg.envelope(4, 100, 20, 10)
}
sub gameover() {
; attempt at buzz/boing (but can't get the sawtooth/triangle combined waveform of the sid)
uword freq = 200
cx16.vpoke(1, $f9c0, lsb(freq))
cx16.vpoke(1, $f9c1, msb(freq))
cx16.vpoke(1, $f9c2, %11111111) ; max volume
cx16.vpoke(1, $f9c3, %01000000) ; sawtooth waveform
sys.wait(30)
cx16.vpoke(1, $f9c2, 0) ; shut off
; attempt at buzz/boing
psg.freq(5, 300)
psg.freq(6, 600)
psg.voice(5, psg.LEFT | psg.RIGHT, 0, psg.SAWTOOTH, 0)
psg.voice(6, psg.LEFT | psg.RIGHT, 0, psg.TRIANGLE, 0)
psg.envelope(5, 100, 30, 10)
psg.envelope(6, 100, 30, 10)
}
}