-
Notifications
You must be signed in to change notification settings - Fork 0
/
sound_tic80.py
155 lines (141 loc) · 4.6 KB
/
sound_tic80.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
import math
from dataclasses import dataclass, asdict
from pathlib import Path
import re
from typing import List
import bitstring
# https://github.com/nesbox/TIC-80/wiki/RAM
FLAGS_BITFORMAT = ", ".join(
["bool","uint:3"] * 2 +
["uint:4, bool, bool, uint:2"] +
["uint:4"] * 8
)
SFX_PT_BITFORMAT = ", ".join(["uint:4"] * 4 )
@dataclass
class Tic80sfxFlags:
""" | .---------------------. |
| | octave | 3bit | |
| | pitch16x | 1bit | |
| | speed | 3bit | |
| | reverse | 1bit | |
| | note | 4bit | |
| | stereo_left | 1bit | |
| | stereo_right | 1bit | |
| | temp | 2bit | |
| '---------------------' |"""
pitch16x :bool = False
octave :int = 0 # last note played
reverse :bool = False # arpeggio down
speed :int = 4
note :int = 0
stereo_left :bool = True
stereo_right :bool = True
temp :int = 0
loop_vol_start :int = 0
loop_vol_size :int = 0
loop_wav_start :int = 0
loop_wav_size :int = 0
loop_arp_start :int = 0
loop_arp_size :int = 0
loop_pitch_start:int = 0
loop_pitch_size :int = 0
@classmethod
def from_hex_str(cls, hex_str:str):
# assert isinstance(hex_str, str)
s= bitstring.Bits("0x"+hex_str)
s_ = s.unpack(FLAGS_BITFORMAT)
# octave 0-7 -> 1-8
s_[1] = s_[1]+1 if s_[4] < 12 else s_[1]+2
# 5,6,7,0,1,2,3,4 -> 0-7
s_[3] = (s_[3]-4)%8
# Note numbers 0...11 are mapped to C...B.
# Note numbers 12...15 are mapped to C...D# on the next higher octave,
# which is an "unintended" SFX feature.
s_[4] = s_[4] if s_[4] < 12 else s_[4]-12
f = cls( *s_ )
return f
def to_hex_str(self):
s_ = list(asdict(self).values())
s_[1] = s_[1]-1
s_[3] = (s_[3]+4)%8 # 5,6,7,0,1,2,3,4 -> 0-7
s_[4] = s_[4]
s : bitstring.BitStream = bitstring.pack(FLAGS_BITFORMAT, *s_)
return s.hex
@dataclass
class Tic80sfx_pt:
volume:int # 0-15
wave:int # 0-15
arpeggio:int # 0-15
pitch:int # -7 - 0 - 7
@classmethod
def from_hex_str(cls,hex_str):
s= bitstring.Bits("0x"+hex_str)
s_ = s.unpack(SFX_PT_BITFORMAT)
pt = cls(
volume=15-s_[0],
wave=s_[1],
arpeggio=s_[2],
pitch=s_[3]
)
return pt
def to_hex_str(self):
s_ = list(asdict(self).values())
s_[0] = 15-s_[0]
s : bitstring.BitStream = bitstring.pack(SFX_PT_BITFORMAT, *s_)
return s.hex
@dataclass
class Tic80sfx:
pts:List[Tic80sfx_pt] # len(30)
flags:Tic80sfxFlags
@classmethod
def from_hex_str(cls,sfx_str):
pts=[]
#assert re.match(r"[\da-f]{132}",sfx_str)
for i in range(30):
pt_str = sfx_str[4*i:4*i+4]
pts.append(Tic80sfx_pt.from_hex_str(pt_str))
#assert len(pts) == 30
flags=Tic80sfxFlags.from_hex_str(sfx_str[-12:])
return cls(pts,flags)
class p8waves:
def __init__(self,waveform) -> None:
self.waveform=waveform
def get_wave(self):
l=32
if self.waveform==0:
fun=lambda i : (math.sin(i*math.pi/(0.5*l))/2+0.5)*15
elif self.waveform==1:
fun=lambda i: i if i < 16 else 31-i
elif self.waveform==2:
fun=lambda i : i%16
elif self.waveform==3:
fun=lambda i: 15 if i < 16 else 0
elif self.waveform==4:
fun=lambda i: 15 if i%16 < 8 else 0
elif self.waveform==5:
fun=lambda i : (math.sin(i%16*math.pi/(0.5*l))/2+0.5)*7
elif self.waveform==6:
fun=lambda i : 0
elif self.waveform==7:
fun=lambda i : math.sin(i%16*math.pi/8)*7+8 if i < 16 else math.sin(i%16*math.pi/8)*4+8
else:
pass #custom
wave=[int(fun(x)) for x in range(l)]
return "".join([f'{x:01X}' for x in wave])
def read_file(path:Path):
sfx_list = {}
sfx_id = None
for line in path.read_text().split("\n"):
if line == "-- </SFX>":
sfx_id = None
elif sfx_id is not None:
print(line)
m = re.match(r"\-\-\s+([\da-f]{3})\:([\da-f]{132})",line)
sfx_id = int(m.group(1))
sfx_list[sfx_id] = Tic80sfx.from_hex_str(m.group(2))
elif line == "-- <SFX>":
sfx_id = 0
return(sfx_list)
if __name__=="__main__":
for sfx in read_file(Path(r"D:\mine\code\TIC-80\sound_pic2tic\waves.lua")).items():
print(sfx)