1 /// Part of my old D1 game library along with [arsd.screen] and [arsd.engine]. Do not use in new projects.
2 module arsd.audio;
3
4 import sdl.SDL;
5 import sdl.SDL_mixer;
6
7 import std..string;
8
9 import arsd.engine;
10
11 bool audioIsLoaded; // potential hack material
12
13 class Sound {
14 public:
15 this(char[] filename){
16 if(!audioIsLoaded)
17 return;
18 sfx = Mix_LoadWAV(std..string.toStringz(filename));
19 if(sfx is null)
20 throw new Exception(immutableString("Sound load " ~ filename));
21 }
22
23 /*
24 this(Wav wav){
25 auto w = wav.toMemory;
26 SDL_RWops* a = SDL_RWFromMem(w, w.length)
27 if(a is null) throw new Exception("sdl rw ops");
28 scope(exit) SDL_FreeRW(a);
29 sfx = Mix_LoadWAV_RW(a, 0);
30 if(sfx is null) throw new Exception("loadwav rw");
31 }
32 */
33
34 ~this(){
35 if(sfx !is null)
36 Mix_FreeChunk(sfx);
37 }
38
39 private:
40 Mix_Chunk* sfx;
41 }
42
43 class Music {
44 public:
45 this(char[] filename){
46 if(!audioIsLoaded)
47 return;
48 mus = Mix_LoadMUS(std..string.toStringz(filename));
49 if(mus is null)
50 throw new Exception(immutableString("Music load " ~ filename));
51 }
52
53 ~this(){
54 if(mus !is null)
55 Mix_FreeMusic(mus);
56 }
57 private:
58 Mix_Music* mus;
59 }
60
61 class Audio{
62 public:
63 this(bool act = true){
64 if(audioIsLoaded)
65 throw new Exception("Cannot load audio twice");
66
67 if(!act){
68 audioIsLoaded = false;
69 active = false;
70 return;
71 }
72 if(Mix_OpenAudio(22050, AUDIO_S16SYS, 2, 4096/2 /* the /2 is new */) != 0){
73 active = false; //throw new Error;
74 error = true;
75 audioIsLoaded = false;
76 } else {
77 active = true;
78 error = false;
79 audioIsLoaded = true;
80 }
81
82 sfxChannel = 1;
83
84 careAboutErrors = false;
85 }
86
87 void activate(){
88 if(!audioIsLoaded) return;
89 if(!error)
90 active = true;
91 }
92
93 void deactivate(){
94 if(!audioIsLoaded) return;
95 active = false;
96 }
97
98 void toggleActivation(){
99 if(!audioIsLoaded) return;
100 if(error)
101 return;
102 active = !active;
103 }
104
105 ~this(){
106 if(audioIsLoaded){
107 Mix_HaltMusic();
108 Mix_HaltChannel(-1);
109 Mix_CloseAudio();
110 }
111 }
112
113 void playEffect(Sound snd, bool loop = false){
114 if(!active || snd is null)
115 return;
116
117 //if(Mix_Playing(sfxChannel))
118 // return;
119
120 sfxChannel = Mix_PlayChannel(-1, snd.sfx, loop == true ? -1 : 0);
121
122 }
123 void stopEffect(){
124 if(!active)
125 return;
126
127 Mix_HaltChannel(sfxChannel);
128 }
129
130 void playMusic(Music mus, bool loop = true){
131 if(!active || mus is null)
132 return;
133
134 if(Mix_PlayMusic(mus.mus, loop == true ? -1 : 0) == -1)
135 throw new Exception("play music");
136 // musicIsPlaying = false;
137 else
138 musicIsPlaying = true;
139 }
140
141 void pauseMusic(){
142 if(!active)
143 return;
144
145 if(musicIsPlaying){
146 Mix_PauseMusic();
147 musicIsPaused = true;
148 }
149 }
150
151 void unpauseMusic(){
152 if(!active)
153 return;
154
155 if(musicIsPaused){
156 Mix_ResumeMusic();
157 musicIsPaused = false;
158 }
159 }
160
161 void stopMusic(){
162 if(!active)
163 return;
164
165 Mix_HaltMusic();
166 }
167
168
169 void stopAll(){
170 if(!active)
171 return;
172
173 Mix_HaltMusic();
174 Mix_HaltChannel(-1);
175 }
176
177 private:
178 int sfxChannel;
179 bool active;
180 bool error;
181
182 bool musicIsPaused;
183 bool musicIsPlaying;
184
185 bool careAboutErrors;
186 }
187
188 int Mix_PlayChannel(int channel, Mix_Chunk* chunk, int loops) {
189 return Mix_PlayChannelTimed(channel,chunk,loops,-1);
190 }
191 Mix_Chunk * Mix_LoadWAV(in char *file) {
192 return Mix_LoadWAV_RW(SDL_RWFromFile(file, "rb"), 1);
193 }
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